Efficacy and safety of chimeric antigen receptor T-cell therapy in relapsed/refractory large B-cell lymphoma: a systematic review and meta-analysis

Abstract

Background:

Individuals diagnosed with relapsed or refractory large B-cell lymphoma (R/R LBCL) typically exhibit a dismal prognosis when treated with conventional therapeutic modalities. CD19—targeted chimeric antigen receptor T (CAR-T) cell therapy has brought about a paradigm shift in the treatment paradigm of this disease. Nevertheless, a comprehensive assessment of the efficacy and safety profiles of diverse CAR-T products (e.g., axicabtagene ciloleucel (axi-cel), tisagenlecleucel (tisa-cel), and lisocabtagene maraleucel (liso-cel)) is imperative.

Objective:

This systematic review aims to systematically summarize and evaluate the efficacy and safety of CAR T-cell therapies for R/R LBCL through systematic review and meta-analytic approaches.

Design:

This is a systematic review and meta-analysis.

Data sources and methods:

Relevant studies were identified by systematically searching PubMed and Web of Science until November 29, 2023. Cohort studies and clinical trials were incorporated, with the inclusion of single-arm studies. CAR T-cell therapies are involved in tisa-cel, axi-cel, and liso-cel. Proportions and their 95% confidence intervals were calculated using standard meta-analytic approaches.

Results:

Thirty-seven studies were included in meta-analyses, liso-cel demonstrated equivalent overall survival rates (70.3%) to axi-cel (65.6%) at 12 months post-treatment, whereas tisa-cel was 48.0%. Objective response rate for liso-cel was comparable to axi-cel (79.0% vs 76.8%, p_{meta-regression} = 0.74), both of which were notably higher than those observed for tisa-cel (58.3%, both p_{meta-regression} < 0.05). Regarding safety assessments, liso-cel exhibited the lowest cytokine release syndrome rate at 43.0%, followed by tisa-cel at 70.9%, and axi-cel at 87.9%. However, tisa-cel had the lowest incidence of neurologic events (14.9%), in contrast to liso-cel (21.1%) and axi-cel (52.3%).

Conclusion:

Based on the available evidence, liso-cel has shown promising efficacy and a manageable safety profile in patients with R/R LBCL, when compared to axi-cel and tisa-cel. However, real-world data on liso-cel are limited.

Plain language summary

A meta-analytic review for Chimeric antigen receptor T-cell therapy in relapsed/refractory large B-cell lymphoma

This study provides a comprehensive evaluation of three CAR T-cell therapies for treating aggressive lymphoma that has returned or stopped responding to treatment. The analysis shows that lisocabtagene maraleucel (liso-cel) performed similarly to axicabtagene ciloleucel (axi-cel) in helping patients survive for at least one year, while tisagenlecleucel (tisa-cel) showed lower survival rates. In terms of tumor shrinkage, both liso-cel and axi-cel worked better than tisa-cel. When looking at side effects, liso-cel caused fewer severe immune reactions than the other two treatments, though it had slightly more neurological complications than tisa-cel. These findings suggest liso-cel may offer the best balance between effectiveness and safety for this difficult-to-treat cancer, though more real-world experience is needed to confirm these results.

Keywords

axicabtagene ciloleucel (axi-cel)lisocabtagene maraleucel (liso-cel)meta-analysis relapsed or refractory large B-cell lymphoma (R/R LBCL)systematic review tisagenlecleucel (tisa-cel)

Introduction

Diffuse large B cell lymphoma (DLBCL) is the most common type of non-Hodgkin lymphoma worldwide, accounting for approximately 30%–40% in different geographic regions.¹ Although the majority of DLBCL patients respond to first-line chemotherapy or a comparable regimen, approximately one-third of patients will develop relapsed or refractory large B-cell lymphoma (R/R LBCL), which remains a major cause of morbidity and mortality.² Treatment options are limited for patients with R/R LBCL, and only a minority of patients can be cured by the second-line chemotherapy followed by consolidative autologous stem cell transplantation (ASCT).³ However, the prognosis remains dismal for patients who are ineligible for ASCT or relapse even after ASCT. Since chimeric antigen receptor (CAR) T-cell therapy was introduced, up to 40% of R/R DLBCL patients could achieve a high response rate and long-term remission.⁴ To date, only three CAR T-cell therapies are available for third- or later-line treatments of LBCL: tisagenlecleucel (tisa-cel), axicabtagene ciloleucel (axi-cel), and lisocabtagene maraleucel (liso-cel), all of which are CD19-directed CAR T-cell therapies.

Three randomized controlled trials regarding these three CAR T-cell therapies have demonstrated their clinical benefits in R/R LBCL, compared with standard of care (SOC).^5–7 As no head-to-head studies comparing various CD19-directed CAR T cell therapies, some indirect treatment comparison studies have been conducted between axi-cel and tisa-cel,^8–16 axi-cel and liso-cel,^17,18 as well as tisa-cel and liso-cel.^19,20 Additionally, moderate numbers of studies based on real-world data and single-arm trials were also published.^21–33 A systematic review has been performed to evaluate the benefits and harms of CAR T-cell therapy for people with R/R LBCL, identifying 13 eligible uncontrolled studies evaluating a single or multiple arms of CAR T-cell therapies, but only tisa-cel and axi-cel were included, and no meta-analysis was conducted.³⁴ Another two previous reviews utilized the meta-analysis to evaluate the efficacy and safety of CAR T-cell therapies, including axi-cel, tisa-cel, and liso-cel,^3,35 but only three randomized controlled studies were included,^5–7 which found that CAR T-cell therapy has superior outcomes as compared to SOC. Therefore, for better evaluation of the efficacy and safety of CAR T-cell therapies, we aimed to conduct a systematic review and meta-analysis for available clinical evidence of three CAR T-cell therapies in the treatments of R/R LBCL, including tisa-cel, axi-cel, and liso-cel.

Methods

Literature searching strategies

This systematic review and meta-analysis were conducted per the reporting guidelines in Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA).³⁶ Our researchers conducted a literature search to identify relevant studies assessing the efficacy and safety of CAR T-cell treatments in R/R LBCL in two electronic databases, including PubMed (National Library of Medicine, National Center for Biotechnology Information, Bethesda, MD, USA) and Web of Science (Clarivate Analytics, Boston, MA, USA) through November 29, 2023. Relevant searches utilized various combinations of relevant terms, such as (“large B-cell lymphoma” OR “large B cell lymphoma” OR “LBCL” OR “DLBCL”) AND (“chimeric antigen receptor T” OR “chimeric antigen receptor therapy” OR “chimeric antigen receptor T-cells” OR “chimeric antigen receptor-modified T” OR “chimeric antigen receptor-engineered T” OR “CAR-T” OR “CAR T-Cell” OR “CAR T Cell” OR “Axicabtagene” OR “tisagenlecleucel” OR “lisocabtagene”). The methodologies employed for the search of each database were delineated in Table S1.

Duplicate publications were excluded each title and/or abstract was checked for relevance. The full text of an article was reviewed only if the abstract indicated that the article was potentially relevant. Only original studies conducted among human participants were considered for this review. Cross-referencing was employed to complement the study identification process of the systematic review. Two researchers (Q.L. and S.X.) conducted an independent assessment of the eligibility of all retrieved literature using EndNote 20 software (Clarivate). Their findings underwent comparison at each selection stage, and any disagreements were resolved through discussions. In instances where additional inconsistencies emerged, the senior researchers (H.H. or Y.H.) were consulted to address them.

Inclusive and exclusive criteria

Studies were included in this systematic review if they met the following criteria: (1) subjects must be 18 years or older; (2) clinical trials or observational cohort studies, whatever single arm and double arms; (3) the sample sizes for any individual CAR T-cell treatment group ought to be 10 or greater; (4) axi-cel, tisa-cel, or liso-cel were used as an independent treatment group, whatever treating dose levels; (5) all subjects were diagnosed as positron emission tomography-positive relapsed or refractory diffuse large B-cell lymphoma (de novo or transformed from any indolent lymphoma), high-grade B-cell lymphoma with rearrangements in MYC a proto-oncogene encoding a transcription factor regulating cell growth and proliferation and either BCL2, BCL6, or both (double-hit or triple-hit lymphoma), primary mediastinal B-cell lymphoma, or follicular lymphoma grade 3B³⁷; (6) at least one efficacy or safety outcome was reported, including overall survival (OS), progression-free survival (PFS), objective response rate (ORR), complete response rate (CRR), partial response rate (PRR), cytokine release syndrome (CRS), and neurologic events (NE).

Conversely, studies were excluded if (1) studies include patients included juveniles (age <18 years); (2) article types are case reports, animal experiments, editorials, conference abstracts without full-text publications; (3) studies with any two or three CAR T-cell therapies mixed in one group were also excluded; (4) studies combining CAR T-cell therapy with other investigation treatments were excluded to ensure treatment effect specificity; (5) only CAR T-cell therapy was mentioned, but axi-cel, tisa-cel, liso-cel were not be referred; (6) reviews or meta-analytic reviews were excluded, but corresponding individual studies were judged for eligibility per the above-mentioned inclusive criteria; (7) the duration of response (DOR), event-free survival (EFS), and treatment-emergent adverse events (TEAE) were not assessed due to the shortage of reported studies, which are insufficient to compare the differences among these CAR T-cell therapies; (8) repeated reports were removed, and a singular, representative paper was chosen for each study that met the criteria for inclusion. Furthermore, the paper with the longest follow-up period was preferentially selected, as a general rule.

Outcome measures

Overall survival was defined as the time from the first infusion of any one of CAR T-cell therapies to death from any cause. PFS was defined as the time from first infusion of any one of CAR T-cell therapies to disease progression or death from any cause at or after assessment by independent review committee (IRC) or investigators. ORR is calculated as the proportion of patients who achieved a best overall response of complete response or partial response, based on assessment by the IRC per Lugano criteria.³⁸ CRR was computed as the proportion of patients achieving a complete response. PRR was computed as the proportion of patients achieving a partial response.

Data extraction

At least two authors independently extracted the following data in a standardized manner for each eligible study: study abbreviation name, study period and countries, clinical trial phase, registered number in ClinicalTrialsgov, indications of R/R LBCL, age and sex proportions of patients, drug dosages, sample size, duration of follow-ups, as well as primary and secondary endpoints, including OS, PFS, ORR, CRR, PRR, CRS, and NE. Any disagreement was resolved in a study team after additional review of the articles or further discussion with a senior researcher, if necessary.

Quality assessments

The two researchers independently performed the quality assessment of the included studies using the Newcastle–Ottawa scale (NOS)³⁹ for cohort studies, phase I trials, and phase II trials, and Jadad score scale⁴⁰ for three randomized controlled trial (RCT). Accounting for eight items across three domains (selection, comparability, and outcome), a study was awarded one point for each item, with the exception of the item related to comparability, which allowed the assignment of two points. Hence, NOS ranges from 0 to 9, and a score of 7 or greater was considered good quality. Jadad score includes randomization (2 points), double-blinding (2 points), and withdrawals and dropouts (1 point). If the study did not employ double-blinding, then the use of blinded or independent central review would also be rewarded with a score of 2 points. The sum of the above-mentioned items was computed for each study and ranged from 0 to 5 points. Low quality was defined as 2 points or less, and high quality as ⩾3 points.

Statistical analyses

Only outcomes were extracted from axi-cel, tisa-cel, and liso-cel treatment groups to assess the efficacy and safety in treating R/R LBCL, and the outcomes from other treatment groups were ignored. Finally, proportions (or rate) with their 95% confidence intervals (CI) calculated as effect sizes (ES) of meta-analysis. Cochran’s Q test was conducted to test the heterogeneity across included trials by summarizing variation around the estimated ES. Generally, heterogeneity is considered present if the p value is <0.10. I² statistic was also calculated to estimate the degree of heterogeneity; 25%–49% was defined as low, 50%–74% as moderate, and 75% or higher as high degree. The random effects model using DerSimonian and Laird method was used if heterogeneity occurred, otherwise, the fixed effects model based on the Mantel-Haenszel method was conducted.^41,42 Meta-regressions were employed to investigate the influence of diverse CAR T-cell therapies on the effect sizes of studies, utilizing regression-based methodologies. The publication bias was assessed using Egger’s linear regression tests at 0.05 level for significance.⁴³ Sensitivity analyses were performed by deleting one study each time, which could evaluate the robustness of our meta-analysis results. Subgroup analyses were used to assess the source of heterogeneity, including various follow-ups after treatment for OS and PFS (6-month vs 12-month). Furthermore, the effectiveness and safety profiles exhibit variability contingent upon patient selection, when considering CAR T-cell therapies as initial, subsequent, or tertiary systemic treatment modalities. Consequently, subgroup analyses were executed to assess the variation in targeted outcomes across distinct lines of systematic treatments, encompassing 1 line, 2 lines, ⩾2 lines, and ⩾3 lines. All analyses were performed by using Stata 12.0 (Stata Corp, College Station, TX, USA).

Results

Study screening and selection

A flow diagram of the study search and selection process is presented in Figure 1. We found 1738 publications via a systematic literature search, of which 258 records were deleted as duplicates. The remaining 1480 titles/abstracts were screened for eligibility, and 1266 publications were excluded, including 505 non-original articles, 323 conference abstracts, 305 irrelevant, 125 case reports or series with sample size <10, and 8 animal experiments. Two hundred and fourteen studies appeared to be potentially relevant for inclusion, but 177 were excluded during the full-text evaluation due to the following reasons: 61 literatures reported the outcomes of multiple CAR T-cell therapies; 49 did not defined which CAR T cell therapies were used; 20 literatures are repeated papers,^5,6,44–61 which was the same studies with included study^62–68; 15 studies being meta-analytic reviews or indirect comparison^{3,16–20,34,35,69–75}; 15 targeted outcomes not reported^76–90; 12 studies reporting combined results of CAR T-cell therapies and other treatments^91–102; 5 for other CAR T-cell therapies.^103–107 The literature listing of studies excluded from the analysis is presented in Table S2. Ultimately, 37 studies were included, involving in 20 for axi-cel,^{24–33,64,65,68,108–114} 8 for direct comparisons between axi-cel and tisa-cel,^8–15 5 for tisa-cel,^7,21–23,67 and 4 for liso-cel.^62,63,66,115

Figure 1.

Flowchart of literature selection.

Characteristics of included studies

Details on the general characteristics of included studies are shown in Table 1. These studies were conducted in the USA, Canada, Europe, Australia, Japan, and Israel. Among 37 eligible studies, 28 individual studies assess the efficacy and safety of the axi-cel in R/R LBCL, involving 4072 patients.^{5,24–33,55,57,64,65,68,108–114} Of 28 axi-cel studies, 17 were retrospective studies,^{8–10,12–15,24,25,27–32,111} 6 phase II trials,^{64,68,108,109,113,114} 3 prospective cohort studies,^11,26,110 1 phase I trial,¹¹² and 1 phase III trial.⁶⁵ The longest follow-ups were 5 years,⁶⁴ and the shortest were <1 month.³⁰ A total of 13 studies among 1491 patients reported the outcomes of tisa-cel, 4 of which were single-arm studies,^21–23,67 and another 9 were two-arm studies.^7–15 Only one was randomized controlled trial (phase III trial),⁷ others were observational studies comparing tisa-cel with axi-cel.^8–15 Since liso-cel was approved for third-line R/R LBCL in 2021, after axi-cel in 2017 and tisa-cel in 2018, only four studies of 432 R/R LBCL patients reported the efficacy and safety of liso-cel so far, including one phase I trial,⁶³ two phase II trials,^66,115 and one phase III trial.⁶²

Table 1.

General information of included studies regarding liso-cel, axi-cel, and tisa-cel.

Study/author name, year	Country: sample sizes (study duration)	Phase, group (ClinicalTrialsgov)	Indications of R/R LBCL	Lines of therapy	Age (years, median, IQR, range)	Male %	Median follow-up (IQR)	Primary endpoints
Axi-cel
ZUMA-1 cohort 1+2,⁶⁴ 2019	USA and Israel: 119 (2015–2021)	Phase II, single arm (NCT02348216)	Primary refractory; no response to last chemotherapy or relapse or DP ⩽12 months post-ASCT	⩾3	58, 51–64, 23–76	67%	631 months (589–684)^a	ORR
ZUMA-9,⁶⁸ 2020	USA: 298 (2017–2018)	Phase II, single arm (NCT03153462)	Have received adequate prior therapy: anti-CD20 monoclonal antibody, and an anthracycline containing chemotherapy regimen	⩾3	60, NA, 21–83	64%	138 months (39–216)^a	Not defined
ZUMA-1 cohort 6,¹¹³ 2021	USA, France, Netherlands, and Israel: 40 (2019–2020)	Phase II, single arm (NCT02348216)	Primary refractory; R/R disease after ⩾2 lines of systemic therapy or relapse or PD ⩽12 months post-ASCT	⩾3	65, NA, 37–85	58%	89 months (60–121)	CRS and NE
Baird et al.,²⁴ 2021	USA: 41 (2017–2019)	Retrospective cohort, single arm (NA)	Have received axi-cel with minimum follow-up of 1 year for all durable responders	⩾2	56, NA, 21–76	59%	⩾1 years	Not defined
Grana et al.,²⁵ 2021	USA: 37 (2018)	Retrospective cohort, single arm (NA)	Have received ⩾2 lines of systemic therapy	⩾3	59, NA, 23–75	59%	11 months (NA)	CRS and neurotoxicity
Holtzman et al.,²⁷ 2021	USA: 45 (2018–2019)	Retrospective cohort, single arm (NA)	R/R LBCL treated with axi-cel	⩾2	60, NA, 26–75	49%	71 months (30–99)	ICANS
Logue et al.,²⁹ 2021	USA: 85 (2016–2019)	Retrospective cohort, single arm (NA)	R/R LBCL treated with axi-cel	⩾2	64, NA, 28–79	60%	128 months (08–424)	Not defined
Mian et al.,³¹ 2021	USA: 27 (2018–2019)	Retrospective cohort, two arm (NA)	Consecutive adult patients for whom letters of medical necessity were sent to get insurance approval for axi-cel use	⩾3	63, NA, 25–77	71%	5 months (2–16)	OS
Spiegel et al.,¹¹² 2021	USA: 21 (2017–2020)	Phase I, single arm (NCT03233854)	Consecutive patients treated with axi-cel with available pretreatment tissue biopsies for immunohistochemistry	⩾3	69, NA, 25–78	71%	21 months (11–24)^b	Manufacturing feasibility and safety
CIBMTR,²⁶ 2022	USA and Canada: 181 (2012–2019)	Prospective cohort, two arms (NA)	Had history of a failed prior autologous hematopoietic cell transplant	⩾2	61, NA, 22–80	65%	130 months (10–277)	Not defined
Iovina et al.,²⁸ 2022	USA: 60 (2018–2020)	Retrospective cohort, single arm (NA)	Treated with axi-cel after lymphodepletion with cyclophosphamide and fludarabine	⩾3	62, NA, 25–79	67%	48 months (10–311)	Not defined
PASS,¹¹⁰ 2022	USA:1279 (2017–2020)	Prospective cohort, single arm (NA)	Treated with the commercial axi-cel	⩾2	62, NA, 19–90	65%	129 months (128–132)	ORR
JapicCTI-183914,¹⁰⁹ 2022	Japan: 16 (2019)	Phase II, single arm (NA)	Chemorefractory disease or relapse ⩽12 months after ASCT	⩾2	58, NA, 44–70	69%	⩾3 months	ORR
ZUMA-7,⁶⁵ 2022	USA, Australia, Europe, and Israel: 180 (2018–2023)	Phase III, two arms (NCT03391466)	Refractory to first-line treatment or relapsed within 12 months after first-line chemoimmunotherapy	2	59, NA, 21–81	66%	472 months (398–600)	EFS
Melody et al.,³⁰ 2022	USA: 97 (2016–2020)	Retrospective cohort, single arm (NA)	Have received ⩾2 systemic lines of therapy	⩾3	56, NA, 24–76	64%	<1 months	VTE
ZUMA-12,¹¹⁴ 2022	USA, France, and Australia: 40 (2019–2020)	Phase II, single arm (NCT03761056)	First-line therapy in high-risk LBCL	1	61, NA, 23–86	68%	159 months (60–267)^a	CRR
Panaite et al.,³² 2022	USA: 53 (2018–2020)	Retrospective cohort, single arm (NA)	R/R LBCL	⩾3	63, NA, 25–79	68%	<1 months	Severe cytopenias
Shadman et al.,¹¹¹ 2022	USA: 145 (2013–2019)	Retrospective cohort, two arm (NA)	Relapsed DLBCL in partial remission	⩾2	59, NA, 18–91	62%	12 months (3–26)^a	PFS
ALYCANTE,¹⁰⁸ 2023	France: 62 (2021–2023)	Phase II, single arm (NCT04531046)	Primary refractory or relapse early after a rituximab-containing first-line therapy deemed ineligible for ASCT	2	70, NA, 49–81	76%	120 months (91–126)	CRR
Spanjaart et al.,³³ 2023	Netherlands: 145 (2020–2023)	Retrospective cohort, single arm (NA)	Have received ⩾2 lines of systemic therapy	⩾3	60, NA, 21–84	66%	130 months (70–226)	Not defined
Tisa-cel
JULIET,⁶⁷ 2019	USA, Europe, Australia, Canada, Japan: 93 (2015–2017)	Phase IIa, single arm (NCT02445248)	Have previously received at least two lines of therapy, and either had a relapse after or were ineligible for autologous transplantation	⩾3	56, NA, 22–76	65%	140 months (01–26)^a	ORR
Iacoboni et al.,²³ 2020	Spain: 75 (2018–2020)	Retrospective cohort, single arm (NA)	R/R LBCL	⩾3	60, 52–67, NA	59%	141 months (131–174)^b	Not defined
BELINDA,⁷ 2022	18 countries: 162 (2019–2021)	Phase III, two arms (NCT03570892)	Erefractory or progressing within 12 months after first-line therapy	2	59, NA, 19–79	62%	Max 60 months	EFS
Yagi et al.,²² 2022	Japan: 21 (NA)	Retrospective cohort, single arm (NA)	R/R DLBCL treated with commercially available tisagenlecleucel	NA	NA, NA, NA	NA	63 months (NA)	Not defined
Terao et al.,²¹ 2023	Japan: 45 (2020–2022)	Retrospective cohort, single arm (NA)	Consecutive patients diagnosed with R/R DLBCL, follicular lymphoma with histologic transformation to large B-cell lymphoma, or follicular lymphoma	⩾2	58, NA, 43–72	56%	8 months (02–357)^a	Not defined
Tisa-cel vs Axi-cel
French DESCAR-T,¹⁵ 2022	France Tisa-cel: 419	Retrospective cohort, two arms (NCT04328298)	Had received ⩾2 lines of therapy	⩾3	64, NA, 20–81	62%	13 months (121–135)^b	PFS
	Axi-cel: 253 (2019–2021)				63, NA, 19–79	60%
Bastos-Oreiro et al.,¹⁴ 2022	SpainTisa-cel: 91	Retrospective cohort, two arms (NA)	Had received ⩾2 lines of therapy	⩾3	56, 50–65, NA	65%	14 months (10–18)	Not defined
	Axi-cel: 101 (2019–2021)				54, 44–62, NA	60%	10 months (8–12)
Bethge et al.,¹³ 2022	GermanyTisa-cel: 183	Retrospective cohort, two arms (NA)	Registered with the German Registry for Stem Cell Transplantation (DRST)	⩾2	61, NA, 19–83	64%	11 months (NA)	Not defined
	Axi-cel: 173 (2018–2021)				60, NA, 20–83	69%
Kuhnl et al.,¹² 2022	UKTisa-cel: 76	Retrospective cohort, two arms (NA)	Approved by the National CAR-T Clinical Panel and delivered at CAR-T centers	⩾2	63, NA, 30–77	55%	139 months (91–194)	Not defined
	Axi-cel: 224 (2018–2020)				57, NA, 18–78	64%
Monfrini et al.,¹¹ 2022	ItalyTisa-cel: 29	Prospective cohort, two arms (NA)	R/R LBCL received standard of care Tisa-cel or Axi-cel	⩾2	56, NA, NA	55%	9 months (NA)	Not defined
	Axi-cel: 32 (2019–2021)				55, NA, NA	62%
GELTAMO/GETH-TC,¹⁰ 2023	SpainTisa-cel: 160	Retrospective cohort, two arms (NA)	Had received ⩾2 lines of therapy	⩾3	63 (23–79)	67%	122 months (121–122)	Not defined
	Axi-cel: 169 (2019–2022)				57 (21–80)	59%
Benoit et al.,⁹ 2023	CanadaTisa-cel: 10	Retrospective cohort, two arms (NA)	Had received ⩾2 lines of therapy	⩾3	67, NA, 51–80	60%	112 months (NA)	Not defined
	Axi-cel: 15 (2020–2022)				59, NA, 28–71	90%	53 months (NA)
Kwon et al.,⁸ 2023	SpainTisa-cel: 127	Retrospective cohort, two arms (NA)	Had received ⩾2 lines of therapy	⩾3	62, NA, 23–76	63%	82 months (6–137)	Not defined
	Axi-cel: 134 (2018–2021)				59, NA, 29–79	59%	124 months (6–20)
Liso-cel
TRANSCEND NHL 001,⁶³ 2020	USA: 269 (2016–2021)	Phase I, single arm (NCT02631044)	Have received ⩾2 lines of systemic treatment with subsequent progression, and HSCT was allowed	⩾3	63, 54–70, 18–86	65%	199 months (150–193)	Safety, dose-limiting toxicity, ORR
TRANSCEND WORLD,¹¹⁵ 2022	Japan: 10 (2018–2020)	Phase II, single arm (NCT03484702)	Either receipt of ⩾2 prior lines of therapy and ECOG PS score ⩽1 or receipt of 1 prior line of therapy and not eligible for transplantation with ECOG PS ⩽2	⩾3	57, NA, 47–73	60%	125 months (NA)	ORR
PILOT,⁶⁶ 2022	USA: 61 (2018–2021)	Phase II, single arm (NCT03483103)	Not intended for HSCT after one previous line of therapy	2	74, 70–78, 53–84	61%	123 months (61–180)	ORR
TRANSFORM,⁶² 2022	USA, Europe, and Japan: 92 (2018–2022)	Phase III, two arms (NCT03575351)	Refractory or relapsed within 12 months after initial response to first-line therapy including an anthracycline and an anti-CD20 monoclonal antibody	2	60, 54–68, 18–75	48%	175 months (09–370)^a	EFS

Only the range of follow-up was reported.

Only the 95% confidence interval was reported.

AE, adverse events; ASCT, autologous stem cell transplantation; axi-cel, axicabtagene ciloleucel; CRR, complete response rate; CRS, cytokine release syndrome; DLBCL, diffuse large B cell lymphoma; DOR, duration of response; DP, disease progression; DRST, German Registry for Stem Cell Transplantation (Deutsches Register f€ur Stammzelltransplantation); ECOG, Eastern Cooperative Oncology Group; EFS, event-free survival; HSCT, hematopoietic stem cell transplantation; ICANS, Immune effector cell-associated neurotoxicity syndrome; IQR, interquartile range; liso-cel, lisocabtagene maraleucel; NA, not available; NE, neurological events; ORR, objective response rate; OS, overall survival; PFS, progression-free survival; PS, performance-status score; R/R LBCL, relapsed or refractory large B-cell lymphoma, tisa-cel, tisagenlecleucel; VTE, venous thromboembolism.

Study quality assessments

Study quality scores based on NOS among 34 non-randomized studies ranged from 1 to 8 (mean 51 ± 18), but no study had a full score of 9. Seven studies were awarded the status of good quality,^{8,10,13,15,63,66,111} whereas six studies were rated as bad quality.^{21,22,25,30,32,109} The remaining 21 studies were rated as fair quality^{9,11,12,14,23,24,26–29,31,33,64,67,68,108,110,112–115} (Table 2). All three phase III randomized controlled trials were rewarded as a full score of 5 due to complete randomization strategies, blinded or independent central review, as well as objective records for an account of all patients.^7,62,65

Table 2.

Assessment of Newcastle–Ottawa scale for 34 non-randomized studies.^a

Authors^[ref], year	Selection (S)				Comparability (C)	Outcome (O)			Total score
Authors^[ref], year	S1	S2	S3	S4	Comparability (C)	O1	O2	O3	Total score
Axi-cel
ZUMA-1 cohort 1+2,⁶⁴ 2019	1	0	1	1	0	1	1	1	6
ZUMA-9,⁶⁸ 2020	1	0	0	1	0	1	1	1	5
ZUMA-1 cohort 6,¹¹³ 2021	1	0	1	1	0	1	1	1	6
Baird et al.,²⁴ 2021	0	0	0	1	0	1	1	1	4
Grana et al.,²⁵ 2021	0	0	1	1	0	0	0	1	3
Holtzman et al.,²⁷ 2021	1	0	1	1	0	1	0	1	5
Logue et al.,²⁹ 2021	1	0	0	1	0	0	1	1	4
Mian et al.,³¹ 2021	0	1	0	1	2	1	0	1	6
Spiegel et al.,¹¹² 2021	0	0	1	1	0	0	1	1	4
CIBMTR,²⁶ 2022	1	1	0	1	1	0	1	1	6
Iovina et al.,²⁸ 2022	1	0	0	1	0	0	1	1	4
PASS,¹¹⁰ 2022	1	0	1	1	0	0	1	1	5
JapicCTI-183914,¹⁰⁹ 2022	0	0	0	1	0	0	0	0	1
Melody et al.,³⁰ 2022	1	0	1	1	0	0	0	0	3
ZUMA-12,¹¹⁴ 2022	1	0	1	1	0	0	1	1	5
Panaite et al.,³² 2022	1	0	1	1	0	0	0	0	3
Shadman et al.,¹¹¹ 2022	1	1	1	1	2	0	1	1	8
ALYCANTE,¹⁰⁸ 2023	1	0	1	1	1	1	1	1	6
Spanjaart et al.,³³ 2023	1	0	0	1	0	0	1	1	4
Tisa-cel
JULIET,⁶⁷ 2019	1	0	1	1	0	1	1	1	6
Iacoboni et al.,²³ 2020	1	0	0	1	0	0	1	1	4
Yagi et al.,²² 2022	0	0	0	1	0	0	0	0	1
Terao et al.,²¹ 2023	0	0	0	1	0	0	1	1	3
Axi-cel vs Tisa-cel
French DESCAR-T,¹⁵ 2022	1	1	1	1	2	0	1	1	8
Bastos-Oreiro et al.,¹⁴ 2022	1	1	0	1	1	0	1	1	6
Bethge et al.,¹³ 2022	1	1	0	1	2	0	1	1	7
Kuhnl et al.,¹² 2022	1	1	0	1	2	0	1	0	6
Monfrini et al.,¹¹ 2022	0	1	0	1	2	0	0	1	5
GELTAMO/GETH-TC,¹⁰ 2023	1	1	0	1	2	0	1	1	7
Benoit et al.,⁹ 2023	0	1	0	1	1	0	0	1	4
Kwon et al.,⁸ 2023	1	1	0	1	2	0	1	1	7
Liso-cel
TRANSCEND NHL 001,⁶³ 2020	1	1	1	1	0	1	1	1	8
TRANSCEND WORLD,¹¹⁵ 2022	0	0	1	1	0	1	1	1	5
PILOT,⁶⁶ 2022	1	1	1	1	0	1	1	1	8

Newcastle–Ottawa scale includes three bias domains, including selection (S), comparability (C), and outcome (O) Selection has four items (0 or 1 point per one item): S1-Representativeness of the exposed cohort; S2-Selection of the non-exposed cohort; S3-Ascertainment of exposure; S4-Demonstration that outcome of interest was not present at start of study Comparability has one item (0, 1 or 2 point per one item), C-Comparability of cohorts on the basis of the design or analysis controlled for confounders Outcome has three items (0 or 1 points per one item): O1-Assessment of outcome; O2-Was follow-up long enough for outcomes to occur; O3-Adequacy of follow-up of cohorts.

axi-cel, axicabtagene ciloleucel; liso-cel, lisocabtagene maraleucel; tisa-cel, tisagenlecleucel.

Meta-analyses for survival

Because of the significant variation in sample size and follow-up duration, we provided survival probabilities specific to each time point. Only a few studies reported survival outcomes at 3, 18, 24, and 60 months. A publication mapping related to patient cohorts at different follow-ups after CAR T-cell therapies was shown in Table S3.

Figure 2 illustrates the forest plots of the pooled OS at 6- and 12-month post-treatments of three CAR T-cell therapies. A total of 11 original studies published their 6-month OS after treatment, involving 6 studies for axi-cel,^{9,12,25,28,108,113} 3 for tisa-cel,^9,12,22 and 4 for liso-cel.^62,63,66,115 In our meta-analysis, OS in liso-cel (ES, 82.2%, 95% CI, 70.4%–84.1%) was comparable to that in axi-cel (ES, 82.1%; 95% CI, 72.9%–91.2%) and tisa-cel (ES, 67.0%; 95% CI, 58.1%–75.8%), with p values for meta-regression more than 0.05. Heterogeneity was found among individual studies of axi-cel (I² = 82.7%, p < 0.01) and liso-cel (I² = 89.7%, p < 0.01), but not for tisa-cel (I² = 0.0%, p = 0.53). No publication bias was observed across these 13 studies (p value = 0.85). Sensitivity analyses were conducted to evaluate the stability of overall ES, and no outliers were detected. In the context of OS at 12 months post-treatment, 20 studies were identified to evaluate 3 CAR T-cell therapies, including 13 for axi-cel,^{8,10,12–15,25,26,31,33,108,111,114} 9 for tisa-cel,^{8,10,12–15,21,23,67} and 4 for liso-cel.^62,63,66,115 In our meta-analyses, OS in liso-cel is the highest at 70.3% (95% CI, 53.3%–87.4%) with 92.6% heterogeneity across studies, which was equivalent to axi-cel at 65.6% (95% CI, 60.6%–70.7%; I² = 82.0%; p_{heterogeneity} < 0.01). Only 48.0% (95% CI, 44.6%–51.4%) was observed in OS for tisa-cel, but low heterogeneity was detected across studies (I² = 20.0%; p_{heterogeneity} = 0.27). There was no significant publication bias (p = 0.21), and sensitivity analyses confirmed the stability of overall ES at 6-month (Figure S1) and 12-month post-treatments (Figure S2). The subgroup analyses presented in Table 3 indicated that the overall survival rate at 12 months post-treatment was diminished when axi-cel was administered as the second or subsequent line of systemic therapy (p_{meta-regression} = 0.01). Conversely, the available evidence did not substantiate similar outcomes for tisa-cel and liso-cel (p_{meta-regression} > 0.05). With respect to the 6-month overall survival rate, the findings from the meta-regression analysis did not provide evidence to support the alteration of patient selection criteria for any of the three CAR T-cell therapies evaluated (p_{meta-regression} > 0.05).

Figure 2.

Overall survival by follow-up months after three CAR T-cell therapies.

Table 3.

Subgroup analysis results by patient selection.

Subgroups	Number of studies	Effect sizes		Heterogeneity		Meta-regression
Subgroups	Number of studies	Proportion (95% CI)	p Value	I² (%)	p Value	p Value
6-month overall survival
Axi-cel
2 lines	1	0.919 (0.851, 0.987)	<0.01	NA	NA	0.12
⩾2 lines	1	0.933 (0.806, 0.060)	<0.01	NA	NA
⩾3 lines	4	0.766 (0.680, 0.852)	<0.01	66.7	0.03
Tisa-cel
⩾2 lines	2	0.652 (0.518, 0.787)	<0.01	16.8	0.27	0.81
⩾3 lines	1	0.692 (0.495, 0.889)	<0.01	NA	NA
Liso-cel
2 lines	2	0.866 (0.750, 0.982)	<0.01	75.6	0.04	0.44
⩾3 lines	1	0.747 (0.695, 0.799)	<0.01	NA	NA
12-month overall survival
Axi-cel
1 line	1	0.906 (0.816, 0.996)	<0.01	NA	NA	0.01
2 lines	1	0.783 (0.680, 0.886)	<0.01	NA	NA
⩾2 lines	4	0.631 (0.544, 0.718)	<0.01	84.0	<0.01
⩾3 lines	8	0.621 (0.582, 0.660)	<0.01	40.8	0.11
Tisa-cel
⩾2 lines	3	0.526 (0.434, 0.617)	<0.01	55.8	0.10	0.12
⩾3 lines	6	0.462 (0.427, 0.498)	<0.01	0.0	0.81
Liso-cel
2 lines	2	0.774 (0.644, 0.905)	<0.01	72.4	0.06	0.32
⩾3 lines	1	0.579 (0.520, 0.638)	<0.01	NA	NA
6-month progression-free survival
Axi-cel
2 lines	1	0.677 (0.561, 0.793)	<0.01	NA	NA	0.56
⩾2 lines	1	0.495 (0.430, 0.560)	<0.01	NA	NA
⩾3 lines	3	0.537 (0.319, 0.756)	<0.01	82.5	<0.01
Tisa-cel
⩾2 lines	1	0.316 (0.211, 0.421)	<0.01	NA	NA	0.99
⩾3 lines	2	0.314 (0.216, 0.413)	<0.01	0.0	0.38
Liso-cel
2 lines	2	0.661 (0.581, 0.742)	<0.01	12.0	0.29	0.09
⩾3 lines	2	0.513 (0.455, 0.572)	<0.01	0.0	0.93
12-month progression-free survival
Axi-cel
1 line	1	0.746 (0.611, 0.881)	<0.01	NA	NA	0.03
2 lines	1	0.488 (0.364, 0.612)	<0.01	NA	NA
⩾2 lines	6	0.470 (0.414, 0.526)	<0.01	75.9	<0.01
⩾3 lines	8	0.447 (0.416, 0.477)		<0.01	10.1	0.35
Tisa-cel
2 lines	1	0.317 (0.212, 0.422)	<0.01	NA	NA	0.65
⩾2 lines	4	0.332 (0.246, 0.419)	<0.01	57.3	0.07
⩾3 lines	5	0.396 (0.187, 0.605)	<0.01	97.5	<0.01
Liso-cel
2 lines	2	0.549 (0.380, 0.718)	<0.01	77.9	0.03	0.33
⩾3 lines	2	0.435 (0.377, 0.493)	<0.01	0.0	0.34
Objective response rate
Axi-cel
1 line	1	0.825 (0.707, 0.943)	<0.01	NA	NA	0.15
2 lines	2	0.874 (0.789, 0.958)	<0.01	73.3	0.05
⩾2 lines	7	0.773 (0.719, 0.828)	<0.01	75.5	<0.01
⩾3 lines	14	0.740 (0.678, 0.802)	<0.01	86.0	<0.01
Tisa-cel
2 lines	1	0.463 (0.386, 0.540)	<0.01	NA	NA	0.22
⩾2 lines	4	0.578 (0.485, 0.671)	<0.01	60.7	0.05
⩾3 lines	7	0.583 (0.530, 0.636)	<0.01	67.9	<0.01
Liso-cel
2 lines	2	0.847 (0.784, 0.909)	<0.01	14.8	0.28	0.09
⩾3 lines	2	0.725 (0.673, 0.777)	<0.01	0.0	0.86
Complete response rate
Axi-cel
1 line	1	0.650 (0.580, 0.720)	<0.01	NA	NA	0.41
2 lines	2	0.555 (0.010, 1.099)	0.05	95.0	<0.01
⩾2 lines	7	0.489 (0.421, 0.557)	<0.01	78.0	<0.01
⩾3 lines	14	0.499 (0.394, 0.604)	<0.01	93.8	<0.01
Tisa-cel
2 lines	1	0.284 (0.215, 0.353)	<0.01	NA	NA	0.95
⩾2 lines	4	0.402 (0.320, 0.485)	<0.01	49.6	0.11
⩾3 lines	7	0.350 (0.270, 0.429)	<0.01	78.8	<0.01
Liso-cel
2 lines	2	0.645 (0.451, 0.839)	<0.01	84.3	0.01	0.41
⩾3 lines	2	0.500 (0.190, 0.810)	<0.01	0.0	0.85
Partial response rate
Axi-cel
1 line	1	0.100 (0.070, 0.193)	0.04	NA	NA	0.19
2 lines	2	0.143 (0.059, 0.227)	<0.01	69.7	0.07
⩾2 lines	6	0.254 (0.177, 0.331)	<0.01	86.9	<0.01
⩾3 lines	12	0.296 (0.143, 0.449)	<0.01	97.8	<0.01
Tisa-cel
2 lines	1	0.179 (0.120, 0.238)	<0.01	NA	NA	0.51
⩾2 lines	4	0.193 (0.124, 0.262)	<0.01	51.8	0.13
⩾3 lines	7	0.221 (0.166, 0.276)	<0.01	67.0	0.01
Liso-cel
2 lines	2	0.189 (0.060, 0.317)	<0.01	74.8	0.05	0.90
⩾3 lines	2	0.195 (0.149, 0.242)	<0.01	0.0	0.97
Cytokine release syndrome
Axi-cel
2 lines	2	0.927 (0.894, 0.961)	<0.01	0.0	0.77	0.95
⩾2 lines	9	0.847 (0.798, 0.896)	<0.01	86.7	<0.01
⩾3 lines	14	0.896 (0.872, 0.919)	<0.01	50.4	0.02
Tisa-cel
2 lines	1	0.613 (0.538, 0.688)	<0.01	NA	NA	0.96
⩾2 lines	4	0.750 (0.634, 0.866)	<0.01	82.0	<0.01
⩾3 lines	7	0.691 (0.642, 0.741)	<0.01	52.9	0.05
Liso-cel
2 lines	2	0.438 (0.329, 0.547)	<0.01	47.7	0.17	0.88
⩾3 lines	2	0.423 (0.365, 0.481)	<0.01	0.0	0.62
Neurological events
Axi-cel
1 line	1	0.725 (0.587, 0.863)	<0.01	NA	NA	0.73
2 lines	2	0.574 (0.497, 0.650)	<0.01	22.9	0.26
⩾2 lines	10	0.468 (0.361, 0.576)	<0.01	95.0	<0.01
⩾3 lines	14	0.543 (0.485, 0.602)	<0.01	79.6	<0.01
Tisa-cel
2 lines	1	0.103 (0.056, 0.150)	<0.01	NA	NA	0.10
⩾2 lines	4	0.117 (0.029, 0.205)	0.01	84.5	<0.01
⩾3 lines	7	0.177 (0.150, 0.203)	<0.01	0.0	0.46
Liso-cel
2 lines	2	0.204 (0.006, 0.402)	0.04	88.8	<0.01	0.93
⩾3 lines	2	0.219 (0.031, 0.408)	0.02	74.8	0.05

axi-cel, axicabtagene ciloleucel; liso-cel, lisocabtagene maraleucel; NA, not applicable; tisa-cel, tisagenlecleucel.

The forest plots of PFS at 6- and 12-month after CAR T-cell therapies are presented in Figure 3. Eleven individual studies reported PFS at 6 months post-treatment, among which five reported for axi-cel,^{9,12,64,108,113} four for tisa-cel,^9,12,22,23 and four for liso-cel.^62,63,66,115 In meta-analysis using random effects model, the liso-cel (ES, 59.2%, 95% CI, 48.5%–69.8%) and axi-cel (ES, 55.9%, 95% CI, 44.5%–67.2%) exhibited better PFS than tisa-cel (ES, 34.1%, 95% CI, 25.3%–42.9%). Large heterogeneity was observed across included studies (I² = 81.9%, p_{heterogeneity} < 0.01), although low heterogeneity was detected across studies using tisa-cel (I² = 30.3%, p_{heterogeneity} = 0.23). No publication bias was observed (p = 0.22). Sensitivity analyses were performed to assess the stability of the overall ES, and no outliers were identified. Regarding the PFS at 12 months following CAR T-cell therapies, 23 studies were used to estimate the PFS, including 16 for axi-cel,^{8,10–15,26,31,33,64,68,108,110,111,114} 10 for tisa-cel,^{8,10–15,21,23,67} and 4 for liso-cel.^62,63,66,115 The findings from the meta-regressions (p = 0.37) demonstrated comparable PFS rates among liso-cel (ES, 48.5%; 95% CI, 36.9%–60.0%), axi-cel (ES, 47.1%; 95% CI, 43.6%–50.5%), and tisa-cel (ES, 37.1%; 95% CI, 25.1%–49.0%). Egger’s linear regression test did not find publication bias among included studies (p = 0.24), and no exception study was discovered in sensitivity analysis (Figures S3 and S4). The subgroup analyses detailed in Table 3 revealed that the PFS rate at 12 months post-treatment experienced a decline when axi-cel was utilized as the second or subsequent line of systemic therapy (p_{meta-regression} = 0.03). In contrast, the extant evidence did not corroborate analogous outcomes for tisa-cel and liso-cel (p_{meta-regression} > 0.05). Regarding the 6-month PFS rate, the meta-regression analysis findings did not furnish evidence to advocate for the modification of patient selection criteria for any of the three CAR T-cell therapies under evaluation (p_{meta-regression} > 0.05).

Figure 3.

Progression-free survival by follow-up months after three CAR T-cell therapies.

Meta-analysis for responses

A total of 32 individual studies were extracted the ORR of CAR T-cell therapies, comprising 24 for axi-cel, 14 for tisa-cel, and 4 for liso-cel. The combined ORR was estimated as 71.4% (95% CI, 67.6%–75.3%; I² = 89.3%, p < 0.01) using meta-analysis with no publication bias (p = 0.36), and forest plot for subgroup analysis by three various treatments is illustrated in Figure 4. Pooled ORR was computed as 58.3% in tisa-cel (95% CI, 53.0%–63.6%), which was far lower than that in liso-cel and axi-cel at 79.0% and 76.8%, respectively (both p_{meta-regression} < 0.01). No outliers were detected during the sensitivity analysis (Figure S5). The meta-regression analyses did not yield evidence to support the alteration of patient selection criteria in ORR for axi-cel (p_{meta-regression} = 0.15), tisa-cel (p_{meta-regression} = 0.22), and liso-cel (p_{meta-regression} = 0.09).

Figure 4.

Objective response rate of three CAR T-cell therapies.

Analogous findings from meta-analyses were shown for CRR in Figure 5. Pooled CRR was calculated as 59.2% in liso-cel and 51.0% in axi-cel, both of which were equivalent in the meta-regression (p = 0.41). However, tisa-cel had a lower CRR at 37.2%, compared to liso-cel (p_{meta-regression} < 0.01), and axi-cel (p_{meta-regression} = 0.02). Large heterogeneity was tested (I² = 92.3%, p < 0.01), but not for publication bias (p = 0.12). No outliers were identified through sensitivity analysis (Figure S6). Upon conducting meta-regression analyses, no substantiating evidence was uncovered to advocate for the modification of patient selection criteria within CRR for axi-cel (p_{meta-regression} = 0.41), tisa-cel (p_{meta-regression} = 0.95), and liso-cel (p_{meta-regression} = 0.41).

Figure 5.

Complete response rate of three CAR T-cell therapies.

No significant differences were observed in PRR among patients treated with axi-cel, tisa-cel, and liso-cel, with respective rates of 26.5%, 20.6%, and 18.6% (refer to Figure 6). Sensitivity analyses did not find exceptional study in the three above-mentioned response rates. Upon conducting a sensitivity analysis, it was determined that no anomalies were present (Figure S7). Upon the execution of meta-regression analyses, no corroborative evidence was identified to support the alteration of patient selection criteria in PRR for axi-cel (p_{meta-regression} = 0.19), tisa-cel (p_{meta-regression} = 0.51), and liso-cel (p_{meta-regression} = 0.90).

Figure 6.

Partial response rate of three CAR T-cell therapies.

Meta-analysis for safety

Among the various TEAEs, CRS and neurological events emerged as the two most concerning adverse effects, whose forest plots are illustrated in Figures 7 and 8. In these three CAR T-cell therapies, liso-cel exhibited the lowest CRS rate at 43.0% (95% CI, 38.3%–47.6%), followed by tisa-cel at 70.9% (95% CI, 66.1%–75.6%), and axi-cel at 87.9% (95% CI, 85.4%–90.3%), with all p values for meta-regression <0.05. In the context of neurologic events, tisa-cel had the lowest incidence of NE (14.9%), next to liso-cel (21.1%), in which no significance was observed in meta-regression (p = 0.17). However, axi-cel showed a high occurrence of NE at 52.3% (both p_{meta-regression} < 0.01 vs tisa-cel and liso-cel). A substantial degree of heterogeneity was observed in CRS (I² = 93.6%, p < 0.01) and NE (I² = 96.9%, p < 0.01), whereas publication bias was not detected with p value of 0.51 and 0.56, respectively. Sensitivity analyses did not identify any outlier studies within the CRS (Figure S8) and NE domains (Figure S9). The results of the meta-regression analysis conducted to assess patient selection criteria did not reveal any significant variability in either the CRS or NE (Table 3).

Figure 7.

Cytokine release syndrome of three CAR T-cell therapies.

Figure 8.

Neurologic events of three CAR T-cell therapies.

Discussions

Although CAR T-cell therapy has been regarded as a promising therapeutic strategy, only three randomized controlled trials reported that CAR T-cell therapies were superior to SOC in R/R DLBCL, and no study demonstrated which CAR T-cell therapy was the most recommended regimen so far. To our knowledge, this meta-analytic review represents the first study aimed at consolidating diverse clinical evidence regarding the efficacy and safety outcomes of three CAR T-cell products in patients with R/R DLBCL, which also compares the differential benefits and risks among axicabtagene ciloleucel, tisagenlecleucel, and lisocabtagene maraleucel employing standard meta-regression and subgroup analytic methodologies. In this study, 37 eligible cohort studies and clinical trials were included, comprising of 4072 patients in 28 studies of axi-cel, 1491 patients in 13 studies of tisa-cel, and 432 patients in 4 studies of liso-cel. Based on these available data, liso-cel has demonstrated promising efficacy and a manageable safety profile in patients with R/R LBCL, when compared to axi-cel and tisa-cel. Axi-cel exhibits comparable efficacy to liso-cel, yet it is associated with more severe CRS and NE. Tisa-cel shows a relatively conservative therapeutic effect, but it holds significant advantages in NE. Even though our meta-analysis incorporated some observational studies with poor quality, conducting a sensitivity analysis for each outcome did not reveal any studies as outliers, and no evidence of publication bias was detected.

Due to the large variability in sample size and the duration of follow-up, we presented time point-specific survival probabilities. The highest number of studies reported a 12-month survival rate, followed by a 6-month survival rate. A small number of studies reported survival outcomes at 3 months,^57,109 18 months,^62,66 and 24 months.^{7,55,63,110,111} To date, only ZUMA-1 reported their 5-year follow-up results, demonstrating axi-cel has sustained OS at 42.6% and PFS at 36.6% without new safety signals in patients with refractory LBCL.⁶⁴ In our meta-analysis, we calculated OS and PFS at both the 6- and 12-month post-treatment, and observed that approximately 60% of patients treated with axi-cel and liso-cel maintained PFS at 6 months post-treatment, which decreased to <50% by the 12-month point. In contrast, the PFS for patients treated with tisa-cel was less encouraging, with only around 40% maintaining PFS at 6 months post-treatment; however, their PFS appeared to stabilize by the 12-month follow-up. Three CAR T-cell products exhibited around 80% and 60% of overall survival at 6- and 12-month post-treatment, respectively. Even though the overall survival of the three CAR T-cell therapy products did not exhibit any statistically significant differences after a 6-month treatment period, the therapeutic benefits of liso-cel and axi-cel were markedly superior to those of tisa-cel when evaluated at 12 months. Several previous studies utilized a matching-adjusted indirect comparison, suggesting axi-cel had superior survival outcomes to tisa-cel,¹⁶ and liso-cel,¹⁷ only based on three phase I and II trial data from ZUMA-1, JULET, and TRANSCEND NHL 001. However, this indirect comparison inherently possesses certain unavoidable limitations, primarily due to the presence of unknown amounts of residual bias. When analyzing single-arm or non-comparative studies, there will always be a degree of uncertainty surrounding the influence of unknown or unmeasured prognostic factors and effect modifiers. Our study offers additional evidence by synthesizing various study design types and employing standard meta-analytic methods to compare three CAR T-cell products in the treatment of R/R DLBCL. In order to enhance comprehension of the variations in patient selection across these three therapies, additional subgroup analyses and meta-regression analyses were conducted for all outcomes under evaluation. Nonetheless, it was observed that only the overall survival and PFS rates at 12 months post-treatment for axi-cel exhibited a significant decline among patients who had undergone two or more lines of systemic therapy, as compared to those who had received earlier lines. However, the available evidence remains insufficient to establish a definitive conclusion.

In addition to ensuring the continuation of life, our meta-analytic review further confirmed that the tumor response rates for axi-cel and liso-cel were found to be quite similar when comparing their effectiveness among who underwent infusion. While tisa-cel exhibits a less favorable response, particularly in terms of ORR (76.8%, 79.0%, vs 58.3%) and CRR (51.0%, 59.2%, vs 37.2%). In earlier research, ORR for CAR-T cell therapies in the treatment of R/R DLBCL has been observed to fall within a broad spectrum, ranging anywhere from 40% up to an impressive 95%.^{7,11,25,108,113} Although these studies have produced diverse outcomes across various countries and settings, and there has been some apprehension regarding whether patient characteristics influence these results, when compared to historical data from non-randomized control groups, CAR-T cell therapies have demonstrated an impact on the natural progression of this aggressive form of non-Hodgkin lymphoma.^16–20,71 Drawing upon the aforementioned evidence, we present an updated systematic review supplemented by a meta-analysis of clinical trials and real-world cohort studies, which aims to compare and evaluate more comprehensively tumor responses among three distinct CAR T-cell products.

Ultimately, we chose CRS and NE as our primary indicators for assessing the safety profiles of the three different products, which are the two most concerned AE closely related to CAR T-cell therapy. Both previous studies and our own research have shown that the use of axi-cel is correlated with a significantly elevated risk of CRS and NE, when compared to the alternative treatments such as liso-cel and tisa-cel.^16,17,19,71 Although tisa-cel demonstrates a relatively conservative therapeutic effect, it exhibits significant advantages in terms of its NE in treating non-Hodgkin’s lymphoma. Consequently, tisa-cel is often preferred for older adults because of its lower toxicity, allowing for administration in an outpatient setting.⁷¹ Liso-cel has shown a manageable safety profile in patients with R/R LBCL, despite being approved most recently in 2021. However, the available data on liso-cel were derived solely from four clinical trials, such as TRANSCEND NHL 001,^45,63 TRANSFORM,^6,62 TRANSORM WORLD,¹¹⁵ and PILOT.⁶⁶ The real-world evidence remains limited in liso-cel, which could aid in translating these clinical trial findings into clinical practice.

One of the significant strengths of our research lies in the utilization of meta-analytic and meta-regression methodologies, which enabled us to compile and synthesize a diverse array of evidence derived from clinical trials as well as real-world data. This comprehensive approach allowed us to conduct a more thorough comparison of the efficacy and safety profiles of three different CAR T-cell products. However, it is crucial to acknowledge certain important limitations when interpreting the outcomes of our study. Firstly, as the original individual data in the eligible articles were inaccessible, relying only on the reported effect sizes might lead to a less precise and potentially inaccurate risk estimation. Secondly, several potentially influential covariates were not taken into account, such as various indications of R/R DLBCL, which could impact the overall effect sizes in the meta-analysis, particularly when dealing with real-world data. Despite the initial classification of patient selection as reported in the articles, we undertook a series of subgroup analyses and a meta-regression to identify potential difference. The heterogeneity in patient selection among the various individual studies remains significant and cannot be overlooked, as it plays a crucial role in the efficacy and safety of various CAR T-cell therapies. Thirdly, in our meta-analysis, some efficacy and safety indicators were omitted, such as the DOR, EFS, and TEAEs. The main reason is the scarcity of documented research and the inconsistency in the selection and reporting of outcomes among these individual studies, which posed challenges for the comparison across CAR T-cell therapies. Notably, this research did not encompass an analysis of survival time because of the varying observational and treatment periods across the studies. Although certain studies present Kaplan–Meier curves, which can reconstruct individual patient data through the Guyot algorithm, the absence of numbers-at-risk/event information and the low-resolution curves in some studies may introduce inconsistencies in the extraction of survival data points, especially for time-to-event outcomes. Fourthly, clinical trials often report diminished toxicity rates and enhanced efficacy durability as a consequence of stringent patient selection criteria, rigorous monitoring, and standardized management protocols. A greater number of real-world studies on axi-cel have been reported to date in comparison with tisa-cel and liso-cel, which could potentially introduce interference in the conclusions drawn. Finally, despite conducting a systematic review that included searches in two databases and implementing thorough cross-referencing to ensure completeness, we cannot rule out the possibility of having overlooked relevant studies.

Conclusion

Despite these limitations, our study furnishes a descriptive summary of the absolute effects observed across studies and is valuable for formulating hypotheses and establishing benchmark rates for future research. CAR-T cell therapy represents a pioneering therapeutic approach for adult patients with R/R DLBCL, who previously had limited treatment options. This meta-analytic review stands as the inaugural study designed to aggregate the varied clinical evidence on the efficacy and safety outcomes of three CAR T-cell products in patients with R/R DLBCL. It also conducts a comparative analysis of the distinct benefits and risks associated with axi-cel, tisa-cel, and liso-cel, utilizing standard meta-regression and subgroup analytic techniques. In conclusion, liso-cel has shown effectiveness and safety in R/R LBCL patients. Axi-cel has similar efficacy but more severe side effects. Tisa-cel has a milder therapeutic effect but advantages in managing AE. Real-world evidence is limited, especially for liso-cel. Ongoing and planned trials may improve CAR-T cell efficacy with combination treatments and could advance CAR-T therapy to earlier lines.

Supplemental Material

sj-docx-1-tah-10.1177_20406207251407511 – Supplemental material for Efficacy and safety of chimeric antigen receptor T-cell therapy in relapsed/refractory large B-cell lymphoma: a systematic review and meta-analysis

Supplemental material, sj-docx-1-tah-10.1177_20406207251407511 for Efficacy and safety of chimeric antigen receptor T-cell therapy in relapsed/refractory large B-cell lymphoma: a systematic review and meta-analysis by Qiang Li, Shenghua Xu, Yun Zhong, Peng Rao, Hui Huang and Yan Huang in Therapeutic Advances in Hematology

Supplemental Material

sj-docx-2-tah-10.1177_20406207251407511 – Supplemental material for Efficacy and safety of chimeric antigen receptor T-cell therapy in relapsed/refractory large B-cell lymphoma: a systematic review and meta-analysis

Supplemental material, sj-docx-2-tah-10.1177_20406207251407511 for Efficacy and safety of chimeric antigen receptor T-cell therapy in relapsed/refractory large B-cell lymphoma: a systematic review and meta-analysis by Qiang Li, Shenghua Xu, Yun Zhong, Peng Rao, Hui Huang and Yan Huang in Therapeutic Advances in Hematology

Footnotes

Acknowledgements

None.

Declarations

ORCID iD

Yan Huang

Supplemental material

Supplemental Material for this article is available online.

References

Young

Medeiros

LJ.

Diffuse large B-cell lymphoma. Pathology 2018; 50: 74–87.

Friedberg

JW.

Relapsed/refractory diffuse large B-cell lymphoma. Hematology Am Soc Hematol Educ Program 2011; 2011: 498–505.

Kim

Cho

Yoon

, et al. Efficacy of salvage treatments in relapsed or refractory diffuse large B-cell lymphoma including chimeric antigen receptor T-cell therapy: a systematic review and meta-analysis. Cancer Res Treat 2023; 55: 1031–1047.

Schuster

, et al. Chimeric antigen receptor T cells in refractory B-cell lymphomas. N Engl J Med 2017; 377: 2545–2554.

Locke

, et al. Axicabtagene ciloleucel as second-line therapy for large B-cell lymphoma. N Engl J Med 2022; 386: 640–654.

Kamdar

, et al. Lisocabtagene maraleucel versus standard of care with salvage chemotherapy followed by autologous stem cell transplantation as second-line treatment in patients with relapsed or refractory large B-cell lymphoma (TRANSFORM): results from an interim analysis of an open-label, randomised, phase 3 trial. Lancet 2022; 399: 2294–2308.

Bishop

, et al. Second-line tisagenlecleucel or standard care in aggressive B-cell lymphoma. N Engl J Med 2022; 386: 629–639.

Kwon

, et al. Axicabtagene ciloleucel compared to tisagenlecleucel for the treatment of aggressive B-cell lymphoma. Haematologica 2023; 108: 110–121.

Benoit

, et al. CAR T-cells for the treatment of refractory or relapsed large B-cell lymphoma: a single-center retrospective Canadian study. Clin Lymphoma Myeloma Leuk 2023; 23: 203–210.

10.

Bastos-Oreiro

, et al. Impact of SCHOLAR-1 criteria on chimeric antigen receptor T cell therapy efficacy in aggressive B lymphoma: a real-world GELTAMO/GETH study. Transplant Cell Ther 2023; 29: 747.e1–747.e10.

11.

Monfrini

, et al. Phenotypic composition of commercial anti-CD19 CAR T cells affects in vivo expansion and disease response in patients with large B-cell lymphoma. Clin Cancer Res 2022; 28: 3378–3386.

12.

Kuhnl

, et al. A national service for delivering CD19 CAR-Tin large B-cell lymphoma—the UK real-world experience. Br J Haematol 2022; 198: 492–502.

13.

Bethge

, et al. GLA/DRST real-world outcome analysis of CAR T-cell therapies for large B-cell lymphoma in Germany. Blood 2022; 140: 349–358.

14.

Bastos-Oreiro

, et al. Best treatment option for patients with refractory aggressive B-cell lymphoma in the CAR-T cell era: real-world evidence from GELTAMO/GETH Spanish Groups. Front Immunol 2022; 13: 855730.

15.

Bachy

, et al. A real-world comparison of tisagenlecleucel and axicabtagene ciloleucel CAR T cells in relapsed or refractory diffuse large B cell lymphoma. Nat Med 2022; 28: 2145–2154.

16.

Oluwole

, et al. Comparing efficacy, safety, and preinfusion period of axicabtagene ciloleucel versus tisagenlecleucel in relapsed/refractory large B cell lymphoma. Biol Blood Marrow Transplant 2020; 26: 1581–1588.

17.

Oluwole

, et al. Matching-adjusted indirect comparison of axi-cel and liso-cel in relapsed or refractory large B-cell lymphoma. Leuk Lymphoma 2022; 63: 3052–3062.

18.

Maloney

, et al. Matching-adjusted indirect treatment comparison of liso-cel versus axi-cel in relapsed or refractory large B cell lymphoma. J Hematol Oncol 2021; 14: 140.

19.

Schuster

, et al. Comparative efficacy of tisagenlecleucel and lisocabtagene maraleucel among adults with relapsed/refractory large B-cell lymphomas: an indirect treatment comparison. Leuk Lymphoma 2022; 63: 845–854.

20.

Cartron

, et al. Matching-adjusted indirect treatment comparison of chimeric antigen receptor T-cell therapies for third-line or later treatment of relapsed or refractory large B-cell lymphoma: lisocabtagene maraleucel versus tisagenlecleucel. Exp Hematol Oncol 2022; 11: 17.

21.

Terao

, et al. Negative prognostic impact of high-dose or long-term corticosteroid use in patients with relapsed or refractory B-cell lymphoma who received tisagenlecleucel. Transplant Cell Ther 2023; 29: 573.e571–573.e578.

22.

Yagi

, et al. Tisagenlecleucel for relapsed/refractory diffuse large B-cell lymphoma: real-world data from single institute experience. Rinsho Ketsueki 2022; 63: 1363–1372.

23.

Iacoboni

, et al. Real-world evidence of tisagenlecleucel for the treatment of relapsed or refractory large B-cell lymphoma. Cancer Med 2021; 10: 3214–3223.

24.

Baird

, et al. Immune reconstitution and infectious complications following axicabtagene ciloleucel therapy for large B-cell lymphoma. Blood Adv 2021; 5: 143–155.

25.

Grana

, et al. Safety of axicabtagene ciloleucel for the treatment of relapsed or refractory large B-cell lymphoma. Clin Lymphoma Myeloma Leuk 2021; 21: 238–245.

26.

Hamadani

, et al. Allogeneic transplant and CAR-T therapy after autologous transplant failure in DLBCL: a noncomparative cohort analysis. Blood Adv 2022; 6: 486–494.

27.

Holtzman

, et al. Immune effector cell-associated neurotoxicity syndrome after chimeric antigen receptor T-cell therapy for lymphoma: predictive biomarkers and clinical outcomes. Neuro Oncol 2021; 23: 112–121.

28.

Iovino

, et al. Predictors of response to axicabtagene-ciloleucel CAR T cells in aggressive B cell lymphomas: a real-world study. J Cell Mol Med 2022; 26: 5976–5983.

29.

Logue

, et al. Immune reconstitution and associated infections following axicabtagene ciloleucel in relapsed or refractory large B-cell lymphoma. Haematologica 2021; 106: 978–986.

30.

Melody

, et al. Incidence of thrombosis in relapsed/refractory B-cell lymphoma treated with axicabtagene ciloleucel: Mayo Clinic experience. Leuk Lymphoma 2022; 63: 1363–1368.

31.

Mian

, et al. Outcomes and factors impacting use of axicabtagene ciloleucel in patients with relapsed or refractory large B-cell lymphoma: results from an intention-to-treat analysis. Leuk Lymphoma 2021; 62: 1344–1352.

32.

Panaite

, et al. Predictors of cytopenias after treatment with axicabtagene ciloleucel in patients with large B-cell lymphoma. Leuk Lymphoma 2022; 63: 2918–2922.

33.

Spanjaart

, et al. The Dutch CAR-T tumorboard experience: population-based real-world data on patients with relapsed or refractory large B-cell lymphoma referred for CD19-directed CAR T-cell therapy in the Netherlands. Cancers (Basel) 2023; 15: 4334.

34.

Ernst

, et al. Chimeric antigen receptor (CAR) T-cell therapy for people with relapsed or refractory diffuse large B-cell lymphoma. Cochrane Database Syst Rev 2021; 9: Cd013365.

35.

Shargian

Raanani

Yeshurun

, et al. Chimeric antigen receptor T-cell therapy is superior to standard of care as second-line therapy for large B-cell lymphoma: a systematic review and meta-analysis. Br J Haematol 2022; 198: 838–846.

36.

Page

, et al. The PRISMA 2020 statement: an updated guideline for reporting systematic reviews. BMJ 2021; 372: n71.

37.

Swerdlow

, et al. The 2016 revision of the World Health Organization classification of lymphoid neoplasms. Blood 2016; 127: 2375–2390.

38.

Cheson

, et al. Revised response criteria for malignant lymphoma. J Clin Oncol 2007; 25: 579–586.

39.

Stang

Critical evaluation of the Newcastle-Ottawa scale for the assessment of the quality of nonrandomized studies in meta-analyses. Eur J Epidemiol 2010; 25: 603–605.

40.

Jadad

, et al. Assessing the quality of reports of randomized clinical trials: is blinding necessary? Control Clin Trials 1996; 17: 1–12.

41.

DerSimonian

Laird

Meta-analysis in clinical trials. Control Clin Trials 1986; 7: 177–188.

42.

Normand

SL.

Meta-analysis: formulating, evaluating, combining, and reporting. Stat Med 1999; 18: 321–359.

43.

Lin

Chu

Quantifying publication bias in meta-analysis. Biometrics 2018; 74: 785–794.

44.

Abramson

, et al. Health-related quality of life with lisocabtagene maraleucel vs standard of care in relapsed or refractory LBCL. Blood Adv 2022; 6: 5969–5979.

45.

Abramson

, et al. Lisocabtagene maraleucel for patients with relapsed or refractory large B-cell lymphomas (TRANSCEND NHL 001): a multicentre seamless design study. Lancet 2020; 396: 839–852.

46.

Abramson

, et al. Cytokine release syndrome and neurological event costs in lisocabtagene maraleucel-treated patients in the TRANSCEND NHL 001 trial. Blood Adv 2021; 5: 1695–1705.

47.

Awasthi

, et al. Tisagenlecleucel cellular kinetics, dose, and immunogenicity in relation to clinical factors in relapsed/refractory DLBCL. Blood Adv 2020; 4: 560–572.

48.

Elsawy

, et al. Patient-reported outcomes in ZUMA-7, a phase 3 study of axicabtagene ciloleucel in second-line large B-cell lymphoma. Blood 2022; 140: 2248–2260.

49.

Frigault

, et al. Safety and efficacy of tisagenlecleucel in primary CNS lymphoma: a phase 1/2 clinical trial. Blood 2022; 139: 2306–2315.

50.

Gordon

, et al. Lisocabtagene maraleucel for second-line relapsed or refractory large B-cell lymphoma: patient-reported outcomes from the PILOT study. Haematologica 2024; 109: 857–866.

51.

Goto

, et al. Safety and efficacy of tisagenlecleucel in patients with relapsed or refractory B-cell lymphoma: the first real-world evidence in Japan. Int J Clin Oncol 2023; 28: 816–826.

52.

Jacobs

, et al. Severity of cytokine release syndrome influences outcome after axicabtagene ciloleucel for large B cell lymphoma: results from the US lymphoma CAR-T consortium. Clin Lymphoma Myeloma Leuk 2022; 22: 753–759.

53.

Jakobsen

, et al. Detecting deviations from the efficacy and safety results of single-arm trials using real-world data: the case of a CAR-T cell therapy in B-cell lymphoma. Pharmacoepidemiol Drug Saf 2021; 30: 514–519.

54.

Kersten

, et al. Quality-adjusted time without symptoms or toxicity: analysis of axicabtagene ciloleucel versus standard of care in patients with relapsed/refractory large B cell lymphoma. Transplant Cell Ther 2023; 29: 335.e331–335.e338.

55.

Locke

, et al. Long-term safety and activity of axicabtagene ciloleucel in refractory large B-cell lymphoma (ZUMA-1): a single-arm, multicentre, phase 1–2 trial. Lancet Oncol 2019; 20: 31–42.

56.

Maziarz

, et al. Patient-reported long-term quality of life after tisagenlecleucel in relapsed/refractory diffuse large B-cell lymphoma. Blood Adv 2020; 4: 629–637.

57.

Neelapu

, et al. Axicabtagene ciloleucel CAR T-cell therapy in refractory large B-cell lymphoma. N Engl J Med 2017; 377: 2531–2544.

58.

Ogasawara

, et al. In vivo cellular expansion of lisocabtagene maraleucel and association with efficacy and safety in relapsed/refractory large B-cell lymphoma. Clin Pharmacol Ther 2022; 112: 81–89.

59.

Patrick

, et al. Effect of lisocabtagene maraleucel on HRQoL and symptom severity in relapsed/refractory large B-cell lymphoma. Blood Adv 2021; 5: 2245–2255.

60.

Teoh

Brown

LF.

Developing lisocabtagene maraleucel chimeric antigen receptor T-cell manufacturing for improved process, product quality and consistency across CD19(+) hematologic indications. Cytotherapy 2022; 24: 962–973.

61.

Westin

, et al. Safety and efficacy of axicabtagene ciloleucel versus standard of care in patients 65 years of age or older with relapsed/refractory large B-cell lymphoma. Clin Cancer Res 2023; 29: 1894–1905.

62.

Abramson

, et al. Lisocabtagene maraleucel as second-line therapy for large B-cell lymphoma: primary analysis of the phase 3 TRANSFORM study. Blood 2023; 141: 1675–1684.

63.

Abramson

, et al. Two-year follow-up of lisocabtagene maraleucel in relapsed or refractory large B-cell lymphoma in TRANSCEND NHL 001. Blood 2024; 143: 404–416.

64.

Neelapu

, et al. Five-year follow-up of ZUMA-1 supports the curative potential of axicabtagene ciloleucel in refractory large B-cell lymphoma. Blood 2023; 141: 2307–2315.

65.

Westin

, et al. Survival with axicabtagene ciloleucel in large B-cell lymphoma. N Engl J Med 2023; 389: 148–157.

66.

Sehgal

, et al. Lisocabtagene maraleucel as second-line therapy in adults with relapsed or refractory large B-cell lymphoma who were not intended for haematopoietic stem cell transplantation (PILOT): an open-label, phase 2 study. Lancet Oncol 2022; 23: 1066–1077.

67.

Schuster

, et al. Tisagenlecleucel in adult relapsed or refractory diffuse large B-cell lymphoma. N Engl J Med 2019; 380: 45–56.

68.

Nastoupil

, et al. Standard-of-care axicabtagene ciloleucel for relapsed or refractory large B-cell lymphoma: results from the US lymphoma CAR T consortium. J Clin Oncol 2020; 38: 3119–3128.

69.

Kato

, et al. A phase 2 study of axicabtagene ciloleucel in relapsed or refractory large B-cell lymphoma in Japan: 1-year follow-up and biomarker analysis. Int J Hematol 2023; 117: 409–420.

70.

Maziarz

, et al. Indirect comparison of tisagenlecleucel and historical treatments for relapsed/refractory diffuse large B-cell lymphoma. Blood Adv 2022; 6: 2536–2547.

71.

Westin

, et al. Efficacy and safety of CD19-directed CAR-T cell therapies in patients with relapsed/refractory aggressive B-cell lymphomas: observations from the JULIET, ZUMA-1, and TRANSCEND trials. Am J Hematol 2021; 96: 1295–1312.

72.

Neelapu

, et al. Comparison of 2-year outcomes with CAR T cells (ZUMA-1) vs salvage chemotherapy in refractory large B-cell lymphoma. Blood Adv 2021; 5: 4149–4155.

73.

Van Le

, et al. Use of a real-world synthetic control arm for direct comparison of lisocabtagene maraleucel and conventional therapy in relapsed/refractory large B-cell lymphoma. Leuk Lymphoma 2023; 64: 573–585.

74.

Salles

, et al. Indirect treatment comparison of liso-cel vs. salvage chemotherapy in diffuse large B-cell lymphoma: TRANSCEND vs. SCHOLAR-1. Adv Ther 2021; 38: 3266–3280.

75.

Strati

, et al. Hematopoietic recovery and immune reconstitution after axicabtagene ciloleucel in patients with large B-cell lymphoma. Haematologica 2021; 106: 2667–2672.

76.

Abbasi

, et al. Axicabtagene ciloleucel CD19 CAR-T cell therapy results in high rates of systemic and neurologic remissions in ten patients with refractory large B cell lymphoma including two with HIV and viral hepatitis. J Hematol Oncol 2020; 13: 1.

77.

Al Zaki

, et al. Day 30 SUVmax predicts progression in patients with lymphoma achieving PR/SD after CAR T-cell therapy. Blood Adv 2022; 6: 2867–2871.

78.

Derlin

, et al. (18)F-FDG PET/CT of off-target lymphoid organs in CD19-targeting chimeric antigen receptor T-cell therapy for relapsed or refractory diffuse large B-cell lymphoma. Ann Nucl Med 2021; 35: 132–138.

79.

Farina

, et al. Timely leukapheresis may interfere with the “Fitness” of lymphocytes collected for CAR-T treatment in high risk DLBCL patients. Cancers (Basel) 2022; 14: 5276.

80.

Good

, et al. Post-infusion CAR T(Reg) cells identify patients resistant to CD19-CAR therapy. Nat Med 2022; 28: 1860–1871.

81.

Guarini

, et al. Long-term host immune modulation following tisagenlecleucel administration in patients with diffuse large B-cell lymphoma and B-lineage acute lymphoblastic leukemia. Cancers (Basel) 2023; 15: 2411.

82.

Harrer

, et al. Apheresis for chimeric antigen receptor T-cell production in adult lymphoma patients. Transfusion 2022; 62: 1602–1611.

83.

Hoogland

, et al. Acute patient-reported outcomes in B-cell malignancies treated with axicabtagene ciloleucel. Cancer Med 2021; 10: 1936–1943.

84.

Lee

McNamara

Dynamic mortality modeling: incorporating predictions of future general population mortality into cost-effectiveness analysis. Value Health 2023; 26: 1145–1150.

85.

Lutfi

, et al. Imaging biomarkers to predict outcomes in patients with large B-cell lymphoma with a day 28 partial response by (18)F-FDG PET/CT imaging following CAR-T therapy. Clin Lymphoma Myeloma Leuk 2023; 23: 757–763.

86.

Möhn

, et al. Neurological management and work-up of neurotoxicity associated with CAR T cell therapy. Neurol Res Pract 2022; 4: 1.

87.

Štach

, et al. Characterization of the input material quality for the production of tisagenlecleucel by multiparameter flow cytometry and its relation to the clinical outcome. Pathol Oncol Res 2023; 29: 1610914.

88.

Strati

, et al. Clinical and radiologic correlates of neurotoxicity after axicabtagene ciloleucel in large B-cell lymphoma. Blood Adv 2020; 4: 3943–3951.

89.

Tully

, et al. Impact of increasing wait times on overall mortality of chimeric antigen receptor T-cell therapy in large B-cell lymphoma: a discrete event simulation model. JCO Clin Cancer Inform 2019; 3: 1–9.

90.

Voltin

, et al. Outcome prediction in patients with large B-cell lymphoma undergoing chimeric antigen receptor T-cell therapy. Hemasphere 2023; 7: e817.

91.

Jain

, et al. Axicabtagene ciloleucel in combination with the 4-1bb agonist utomilumab in patients with relapsed/refractory large B-cell lymphoma: phase 1 results from ZUMA-11. Clin Cancer Res 2023; 29: 4118–4127.

92.

, et al. Risk factors for CAR-T cell manufacturing failure among DLBCL patients: a nationwide survey in Japan. Br J Haematol 2023; 202: 256–266.

93.

Fan

, et al. Potential synergy between radiotherapy and CAR T-cells—a multicentric analysis of the role of radiotherapy in the combination of CAR T cell therapy. Radiother Oncol 2023; 183: 109580.

94.

Jaeger

, et al. Safety and efficacy of tisagenlecleucel plus pembrolizumab in patients with r/r DLBCL: phase 1b PORTIA study results. Blood Adv 2023; 7: 2283–2286.

95.

Sang

, et al. Phase II trial of co-administration of CD19- and CD20-targeted chimeric antigen receptor T cells for relapsed and refractory diffuse large B cell lymphoma. Cancer Med 2020; 9: 5827–5838.

96.

Roddie

, et al. Dual targeting of CD19 and CD22 with bicistronic CAR-T cells in patients with relapsed/refractory large B-cell lymphoma. Blood 2023; 141: 2470–2482.

97.

Gaut

, et al. Filgrastim associations with CAR T-cell therapy. Int J Cancer 2021; 148: 1192–1196.

98.

CD19/CD22 Dual-targeted CAR-T therapy active in relapsed/refractory DLBCL. Oncologist 2020; 25(Suppl. 1): S12–S13.

99.

Wang

, et al. Hematopoietic stem cell transplantation and chimeric antigen receptor T cell for relapsed or refractory diffuse large B-cell lymphoma. Immunotherapy 2020; 12: 997–1006.

100.

Hirayama

, et al. Timing of anti-PD-L1 antibody initiation affects efficacy/toxicity of CD19 CAR-T cell therapy for large B-cell lymphoma. Blood Adv 2024; 8: 453–467.

101.

Zhu

, et al. Venetoclax-based combination therapy in R/R DLBCL patients with failure of CAR-T therapy. Ann Hematol 2023; 102: 597–601.

102.

, et al. Radiation priming chimeric antigen receptor T-cell therapy in relapsed/refractory diffuse large B-cell lymphoma with high tumor burden. J Immunother 2020; 43: 32–37.

103.

Ying

, et al. Relmacabtagene autoleucel (relma-cel) CD19 CAR-T therapy for adults with heavily pretreated relapsed/refractory large B-cell lymphoma in China. Cancer Med 2021; 10: 999–1011.

104.

Ying

, et al. Long-term outcomes of relmacabtagene autoleucel in Chinese patients with relapsed/refractory large B-cell lymphoma: updated results of the RELIANCE study. Cytotherapy 2023; 25: 521–529.

105.

Ying

, et al. Efficacy and safety of relmacabtagene autoleucel, an anti-CD19 chimeric antigen receptor T cell, in relapsed/refractory B-cell non-Hodgkin’s lymphoma: 2-year results of a phase 1 trial. Bone Marrow Transplant 2023; 58: 288–294.

106.

Yan

, et al. Clinical efficacy and tumor microenvironment influence in a dose-escalation study of anti-CD19 chimeric antigen receptor T cells in refractory B-cell non-Hodgkin’s lymphoma. Clin Cancer Res 2019; 25: 6995–7003.

107.

Fan

, et al. Phase I study of CBM.CD19 chimeric antigen receptor T cell in the treatment of refractory diffuse large B-cell lymphoma in Chinese patients. Front Med 2022; 16: 285–294.

108.

Houot

, et al. Axicabtagene ciloleucel as second-line therapy in large B cell lymphoma ineligible for autologous stem cell transplantation: a phase 2 trial. Nat Med 2023; 29: 2593–2601.

109.

Kato

, et al. Phase 2 study of axicabtagene ciloleucel in Japanese patients with relapsed or refractory large B-cell lymphoma. Int J Clin Oncol 2022; 27: 213–223.

110.

Jacobson

, et al. Real-world evidence of axicabtagene ciloleucel for the treatment of large B cell lymphoma in the United States. Transplant Cell Ther 2022; 28: 581.e1–581.e8.

111.

Shadman

, et al. Autologous transplant vs chimeric antigen receptor T-cell therapy for relapsed DLBCL in partial remission. Blood 2022; 139: 1330–1339.

112.

Spiegel

, et al. CAR T cells with dual targeting of CD19 and CD22 in adult patients with recurrent or refractory B cell malignancies: a phase 1 trial. Nat Med 2021; 27: 1419–1431.

113.

Oluwole

, et al. Prophylactic corticosteroid use in patients receiving axicabtagene ciloleucel for large B-cell lymphoma. Br J Haematol 2021; 194: 690–700.

114.

Neelapu

, et al. Axicabtagene ciloleucel as first-line therapy in high-risk large B-cell lymphoma: the phase 2 ZUMA-12 trial. Nat Med 2022; 28: 735–742.

115.

Makita

, et al. Phase 2 results of lisocabtagene maraleucel in Japanese patients with relapsed/refractory aggressive B-cell non-Hodgkin lymphoma. Cancer Med 2022; 11: 4889–4899.

Supplementary Material

Please find the following supplemental material available below.

For Open Access articles published under a Creative Commons License, all supplemental material carries the same license as the article it is associated with.

For non-Open Access articles published, all supplemental material carries a non-exclusive license, and permission requests for re-use of supplemental material or any part of supplemental material shall be sent directly to the copyright owner as specified in the copyright notice associated with the article.

0.00 MB

0.29 MB

0.26 MB