Abstract
Objectives
We evaluated infusion-related reactions associated with cetuximab combination chemotherapy comprising an H1-receptor antagonist plus dexamethasone as anti-allergy premedications for patients with head and neck cancer.
Methods
We retrospectively evaluated 248 patients who received a cetuximab combination regimen between December 2012 and August 2015. All patients received 5 mg intravenous dichlorpheniramine (H1-receptor antagonist), and dexamethasone (DEX) was adjusted from 6.6 mg to 13.2 mg according to the emetogenic risk.
Results
We identified 248 subjects, including 13 (5.2%) with infusion-related reactions (grade 1 in five [2.0%], grade 2 in seven [2.8%], and grade 4 in one [0.4%]). The incidence of these reactions in cetuximab combination regimens, each employing an H1-receptor antagonist, using a higher dose of dexamethasone (13.2 mg) was not significantly lower compared with those using 6.6 mg DEX (2.4% vs 8.3%, respectively; p = 0.43). Twelve patients experienced infusion-related reactions associated with the first cetuximab administration, and one reaction occurred after the third administration.
Conclusions
The incidence of infusion-related reactions was lower compared with those of previous studies. Dexamethasone combined with an H1-receptor antagonist was useful for preventing allergic responses. The incidence of infusion-related reactions was not lower with 13.2 mg dexamethasone, and 6.6 mg DEX prevented infusion-related reactions.
Introduction
Cetuximab (Cmab)-induced infusion-related reactions (IRRs) are well-known adverse drug reactions. The acuteness and severity of symptoms associated with Cmab IRRs suggest that they represent type I reactions mediated by pre-existing immunoglobulin (Ig)E antibodies that cross-react with Cmab. 1 IRRs occur in 6%-18% of patients who receive Cmab, and high-grade (Grade 3 and 4) reactions occur in 1%-5%.2–8 The package insert of Cmab in the United States recommends that anti-allergy prophylactic premedication to treat IRRs caused by Cmab should be restricted to histamine H1-receptor antagonists (H1AT), although few studies describe the use of corticosteroids as a premedication. In the MABEL study of colorectal cancer, the incidence of IRRs was higher in patients who received H1AT alone compared with that of patients who received H1AT plus a steroid (any grade = 25.6% vs 9.6%; Grade 3/4 = 4.7% vs 1.0%, respectively). 8 Accordingly, the Japanese Cmab package insert suggests that the use of corticosteroids may reduce the incidence of IRRs, and the administration of dexamethasone (DEX) as an anti-allergy premedication is therefore common in Japan. Few studies report the effects of anti-allergy premedication to prevent Cmab IRRs,9,10 although dosage guidance is not available. The staff of the Division of Head and Neck Oncology of the National Cancer Center Hospital East (NCCHE) decided to use 6.6 mg of DEX with H1AT. To our knowledge, the effect of H1AT plus DEX as an anti-allergy premedication for chemotherapy including Cmab for patients with head and neck cancer has not been reported.
Aim of the study
We retrospectively reviewed the effects of the addition of DEX to H1AT to chemotherapy administered to patients with cancer of the head and neck. Various doses of DEX were used according to the emetogenic risk of the chemotherapy.
Ethics approval
The National Cancer Center Institutional Review Board approved this study (Approval #2014-319). This was a retrospective study, and the requirement for informed consent was waived.
Methods
Subjects and study design
Anti-allergy premedication groups and Cmab combination chemotherapy regimens.
Three days of oral aprepitant: 125 mg on day 1, 80 mg on days 2–3
Calculated using target AUC = 2
Only Group B was administrated Cmab from 60 to 90 min after premedication because of the administration of other chemotherapy (paclitaxel for 60 min with or without CBDCA for 30 min)
5FU, 5-fluorouracil; APR, aprepitant; CBDCA, carboplatin; CDDP, cisplatin; Cmab, cetuximab; DOC, docetaxel; H1AT, antihistamine H1-receptor antagonist (d-chlorpheniramine); H2AT, antihistamine H2-receptor antagonist (famotidine); PTX, paclitaxel; RT, radiotherapy.
Data analysis
Bivariate analyses, chi-square tests, or Fisher’s exact probability test were used to evaluate the significance of differences among various anti-allergy premedications. All data were analyzed using SPSS version 22.0 (SPSS, Chicago, IL, USA), and p < 0.05 was considered statistically significant. The number of patients differed among groups because of the study’s retrospective design, which reflects daily clinical practice during the study period.
Results
Patients’ characteristics and incidence of IRRs
Patients’ characteristics.
Cmab, cetuximab; IRRs, infusion-related reactions.
IRRs and premedication
Incidence of IRRs and premedications.
Calculated using target AUC = 2
Calculated using target AUC = 5
Only Group 2 was administered Cmab 60–90 min after premedication because of the administration of other chemotherapies (paclitaxel for 60 min with or without CBDCA for 30 min)
5FU, 5-fluorouracil; CBDCA, carboplatin; CDDP, cisplatin; Cmab, cetuximab; DOC, docetaxel; PTX, paclitaxel; RT, radiotherapy.
Discussion
In the present study, 5.2% of patients experienced IRRs, and one patient (0.4%) experienced a severe IRR. These results are comparable with the incidences of Cmab-induced IRRs in patients with head and neck cancer in the EXTREME (12%) 11 and in the Bonner (15%) studies. 3 However, neither study reported the use of standardized anti-allergy premedication. All patients in the present retrospective study received at least 6.6 mg of DEX and an H1AT before Cmab administration. In the MABEL study, the incidence of IRRs was significantly lower in patients who received an H1AT and corticosteroids compared with those who received an H1AT alone. 8 The package insert for Cmab in Japan suggests that corticosteroid use is beneficial for the prevention of IRRs. Oncologists in Japan generally use DEX as an anti-allergy premedication with an H1AT, although the benefits are unknown, and suitable doses of DEX are not established. In clinical trials to gain approval of Cmab in Japan, the 053 and 056 studies report incidences of 4% and 6% for Cmab-induced IRRs, respectively.
Oncologists at the NCCHE used DEX at a minimum dose of 6.6 mg as anti-allergy premedication in Phase 2 clinical studies.12,13 Accordingly, DEX appears beneficial for decreasing the occurrence of Cmab-induced IRRs. However, our results did not reveal a clear benefit of higher doses of DEX. Although the incidence of IRRs was higher with chemotherapy compared with that of Cmab alone, the numbers of patients in the respective premedication groups were unequal. The package insert of APR states that APR inhibits CYP3A4 and in turn inhibits the metabolism of DEX, a CYP3A4 substrate and that serum levels of DEX double with the use of APR. However, one patient in Group D had a Grade 1 IRR. Numerous patients in Groups A and B, who received a lower dose of premedication DEX experienced a grade 2 or grade 4 (one case) IRR. This finding suggests that higher doses of DEX may be associated with decreased severity of IRRs, although the differences were not statistically significant.
O’Neil et al., 14 reported a high incidence of IRRs associated with Cmab in patients treated in Tennessee and North Carolina and evaluated the influence of DEX on Cmab IRRs. The incidence of grade 3 or 4 hypersensitivity reactions was still high (16.7%) when DEX was combined with H1AT. However, the report did not identify the dose of DEX and did not evaluate the influence of the dose of DEX. Keating, et al., 15 found that pretreatment with steroids, in addition to diphenhydramine, was associated with a lower risk of experiencing a grade 3 or 4 hypersensitivity reaction. In the present study, all anti-allergy premedication was conducted before Cmab administration, and the incidence of a grade 3 or 4 IRR was <1%. Furthermore, Cmab could be administered first in Cmab-containing regimens to consider the effect of the systemic load of DEX, and the higher dose of DEX was not a significant factor that prevented IRRs. Only patients in Group B were administered Cmab 60–90 min after anti-allergy premedication because of the administration of other chemotherapeutic drugs. The aspects of the chemotherapy regimen schedule, such as the time lag between DEX and Cmab administration, may result in lower serum levels of DEX at the time the patient received Cmab. Serum levels of DEX are obviously higher immediately after administration compared with those 60–90 min after the administration of the premedication. The incidence of IRRs in Group B was not significantly higher compared with those of the other groups, and the 60 - to 90-min time delay did not seem an important influence on the incidence or severity of IRRs.
Previous reports suggest several risk factors for IRRs caused by Cmab.1,14–16 Nicole et al. reported head and neck cancer as a risk factor for IRRs (62% vs 29%), 17 although a high incidence of these events was not reported in that study or in Japanese Phase 2 studies.12,13 In our study, approximately 10% of patients had a history of allergy, and approximately 5% of patients had allergic disease, although these factors were unrelated to the incidence of IRRs. Atopic disease, tick bites, and allergies to beef or fish eggs are risk factors for IRRs associated with to Cmab;14–16 however, the patients in our study did not have these risk factors. The characteristics of our patients varied widely, but our present study or any previous study uncovered evidence indicating that age is a risk factor for IRRs caused by Cmab.
This retrospective study was limited to a specific chemotherapeutic regimen and only included Japanese patients with head and neck cancer. Furthermore, although we included 258 subjects, there were few severe IRRs, which may have limited the power of the analysis to reveal significant differences. Further studies may therefore be required to evaluate the effects of premedication. Another limitation of this study was that we were unable to measure risk factors for IRRs, such as serum IgE levels or other markers of allergy, which are risk factors for severe IRRs. A recent study found a 100% of negative predictive value for IgE that, which may be relevant. 18 In the present retrospective study, we collected data from patient’s records. The subjects were treated in a clinical practice setting, and therefore we did not use tryptase, measured histamine, or performed skin tests when patients experienced IRRs. Therefore, we were unable to identify the mechanism or cause of the IRRs associated with Cmab. The IRRs of the 12 patients were not allergy-dependent episodes, except one patient who had IRRs during the third cycle of Cmab injections. The recommendations of the International Consensus on drug allergy 19 for preventive measures using premedication (e.g. slow injection and pretreatment with steroids and H1AT) are useful mainly for nonallergic symptoms and may not reliably prevent drug-associated IgE-dependent anaphylaxis.
Conclusion
This is the first study to our knowledge to determine the incidence of IRRs following H1AT plus DEX used as anti-allergy premedication for Cmab-containing chemotherapy administered to Japanese patients with head and neck cancer. Although the incidence of IRRs was not significantly lower with higher doses of DEX premedication, the incidence was lower compared with those of other studies. DEX premedication, with a minimum dose of 6.6 mg, may prevent IRRs. Cmab could be administered first in Cmab-containing regimens to evaluate the effects of the systemic load of DEX.
Footnotes
Acknowledgements
The authors wish to thank the National Cancer Center Hospital East as well as the members of its staff and patients’ family members for supporting the study.
Declaration of conflicting interests
The authors declare that there are no conflicts of interest.
Funding
This research received no specific grant from any funding agency in the public, commercial, or not-for-profit sectors.
