Abstract
Introduction:
Infertility is a global public health problem; cost-effective patient-friendly treatment modalities along with psychosexual intervention strategies are essential for infertility control/prevention/management among ethnically disparate populations.
Objectives:
This study aimed to assess differential in vitro fertilization (IVF) success trends among infertile women of South Indian ethnicity.
Materials and Methods:
Prospective, observational study designed in a hospital-based setting with active enrollment of infertile women undergoing IVF/intracytoplasmic sperm injection (ICSI) at Indira IVF Center, Chennai, Tamil Nadu, India (April-September 2019); inclusion criteria: age >35 years, South Indian ethnicity, married >1 year, absence of full-term clinical pregnancy, endometrial thickness <6 mm/thin endometrium; exclusion criteria: prior ≥2 IVF failures, fibroids/adenomyosis/cervical cancer/endometriosis. IVF success was determined by evaluating total frozen embryos transferred/month, average oocyte yield/donor, oocyte quality, M-II oocytes, biochemical/clinical pregnancy (beta-human chorionic gonadotropin positivity/fetal cardiac activity).
Results:
Mean age and endometrial thickness of study participants were 33.3 years (SD ±1.9) and 8.7 mm (SD ±0.5), respectively; average Body Mass Index (BMI) and anti-müllerian hormone (AMH) levels were 28.4 kg/m2 and 4.7 ng/mL, respectively. Embryos transferred/month: 7 in April/13 in May/24 in June/36 in July/24 in August/30 in September, and pregnancies: 4/8/17/26/20/22 for the months of April, May, June, July, August, and September 2019, respectively. Subgroup stratification demonstrated M-II vs total oocytes retrieved were 76%, 73%, 60%, 71%, 77%, and 77%. Overall IVF success rates were 57% in April/62% in May/71% in June/72% in July/83% in August/73% in September; frozen embryo transfer success was 0 in April-May/67% in June/73% in July/89% in August/100% in September 2019. English/Tamil-speaking infertile women self-reported treatment-related satisfaction rates of 80% to 100%.
Conclusion:
M-II oocytes’ yield, sociodemographics of infertile women, and increasing age/aberrant AMH/BMI profiles/endometrial receptivity/diminished ovarian reserve are promising predictors of IVF/ICSI success in genetically distinct patient population subset(s). Future multicentric gene epidemiology studies with larger sample size and precision-based psychiatric assessments/interventions are warranted for development of predictive biomarkers in infertility management.
Introduction
Clinical infertility has emerged as a significant public health problem in both the Western world, including United States of America and Asia Pacific region, particularly the Indian subcontinent. 1 “Infertility” is defined as the inability to conceive following 12 months of regular unprotected sexual intercourse. 2 The etiopathogenesis of reproductive disorders, primarily female infertility, is indeed complex and intriguing. The clinical sequelae from initiation and/or manifestation of aberrant/altered reproductive physiology, including hormonal imbalances, endometrial receptivity, and/or diminished ovarian reserve, are well-represented in diverse human populations of varying genetic profiles. 3 However, the underlying cellular and molecular mechanisms associated with infertility susceptibility in women of childbearing with differential sociodemographic/cultural exposures and genetic profiles have to be fully elucidated for significantly reducing the increasing burden of infertility among population subsets of diverse ethnicities. In this context, the genetically distinct Indian population of women is not completely homogeneous, and the diverse Indian population, in actuality, is an admixture of population subsets of women of varying cultural exposures, lifestyles, dietary patterns, and genetic profiles; this rather interesting Indian heterogeneous population pool with differential disease susceptibility patterns from North India to South India, including altered susceptibility to infertility and gynecologic malignancies, therefore provides an excellent sample set of a diverse array of genetically distinct subsets of women of childbearing age(s) for reproductive medicine research that may eventually provide spectacular gains in our current understanding of the pathophysiological and/or genetic basis of female infertility worldwide. Cost-effective strategies are essential for infertility control/prevention/management among ethnic populations of varying genetic landscapes; patient satisfaction at infertility medical centers/hospitals would certainly increase with the implementation of high-quality patient-centric clinical research focusing on early identification of risk factors of clinical infertility, precision-based clinical interventions viz in vitro fertilization (IVF), intracytoplasmic sperm injections (ICSIs), and/or psychosocial interventions. It is interesting to note that ethnicity is recently emerging as a strong predictor of infertility in both men and women worldwide; biomedical researchers are constantly endeavoring to dissect the molecular regulatory networks in infertility, and considerable time, efforts, and healthcare resources are being invested in health disparities’ related epidemiological research in the ever-expanding reproductive medicine field. Furthermore, stringent management of expensive assisted reproductive technology (ART) procedures/IVF-related adverse clinical outcomes, including unsuccessful embryo transfer rates, decreased implantation rates, multiple pregnancies, fetal malignancies, stillbirths, and so on, is essential so as to significantly enhance the overall IVF success trends among asymptomatic and symptomatic infertile women of South Indian ethnicity.
Cost-effective community-level public health-oriented health disparities research studies focusing on fertility preservation and infertility prevention among South Indian population subset(s) residing in different states of southern India (e.g. Tamil Nadu, Karnataka, Kerala, Andhra Pradesh) with varying regional dialects, demography, lifestyles, nutrient intakes, and socioeconomic backgrounds, yet overlapping/intermixed cultural exposures and genetic profiles, for developing cost-effective infertility management and risk-assessment protocols in low-resource settings, are ongoing at reputed medical center(s) with continued efforts of diminishing the prevalence of female infertility in reproductive-aged women.
The present exploratory public health-oriented research study aimed to assess differential IVF success trends among infertile women of South Indian ethnicity.
Materials and Methods
Study Design and Setting
The exploratory prospective research study was conducted in a clinical/hospital-based setting at Indira IVF Center, Chennai, Tamil Nadu, India enrolling clinically infertile women of South Indian ethnicity presenting with altered/aberrant endometrial receptivity and diminished ovarian reserve; this cohort-based study was conducted during a 6-month timeline from April to September 2019.
Selection of Study Subjects
Infertile women of South Indian ethnicity undergoing infertility treatment and IVF/ICSI workup/regimen(s) at Indira IVF Center at Chennai in Tamil Nadu, India, presenting with childlessness/failure to conceive and/or diminished ovarian reserve and thin endometrium; the author and expert panel members at Indira IVF, Udaipur and Lucknow, India defined stringent inclusion criteria: age >35 years, South Indian ethnicity, married for >1 year, absence of clinical full-term pregnancy, endometrial thickness <6 mm/thin endometrium, premenopausal, and exclusion criteria: prior ≥2 IVF failures, fibroids/adenomyosis/cervical cancer/endometriosis, and menopausal/postmenopausal, ethnicity other than South Indian. A total of 134 infertile women residing in Chennai and adjoining geographical regions/cities/villages in Tamil Nadu were enrolled after brief counseling sessions. The study adhered to core tenets of good practice research with written informed consent of eligible participants at time of initial enrollment. Further, a majority of the selected study subjects (N = 134) had undergone pre-IVF awareness lecture and a subsequent patient-friendly one-to-one/face-to-face infertility counseling session of approximately 10-minute duration in a senior consultant’s chamber; occasionally, infertile women were counseled about infertility together with their partners/husbands, psychosexual disorders, marital-relationship discords/psychosocial distress/stigma owing to childlessness, so as to explicitly understand the overall psychosocial determinants of clinical infertility with emphasis on timely psychosexual interventions (clinical fertility workups, hormonal treatments, psychiatric treatments for enhancing coping skills while dealing with infertility) and overall cost of IVF treatment in Indian currency (INR).
Clinical Interventions/Planning for Ovulation Induction and IVF
Infertile women were assigned to undergo an array of biochemical tests/procedures, including assay-based hormonal assessments for anti-müllerian hormone (AMH), serum prolactin, luteinizing hormone, estrogen, follicle stimulating hormone (FSH); the titers/cutoffs were evaluated as per standard reference ranges. Endometrial thickness was assessed using the precision-based, high-throughput, sophisticated color Doppler imaging modality;
Data Analysis
Clinical data with relevant parameters/variables were carefully reviewed, and robust data entries were meticulously amalgamated using Microsoft Excel program. Categorical data were summarized by number (N) and percentage (%) in each category, where N represents the total number of participants/eligible study subjects. Descriptive statistics for continuous variables were given as mean with standard deviation (SD) while those for categorical data were given as frequency distribution.
Results
Infertile women (N = 134) were counseled about infertility/IVF regimens; one-to-one counseling sessions were conducted and also the entire cost of infertility treatment that would be incurred in INR, from the time of initial registration at Chennai-based IVF Center, IVF workup/regimen(s), clinical diagnostic assay-based hormonal/reproductive endocrinology-related tests, patient’s stay at the medical center during surgical interventions/IVF regimens, including embryo transfers, oocyte retrievals, pregnancy/live birth, post-IVF patient-centric quality care, medications, and so on, was explained keeping in mind the socioeconomic status of the study cohort seeking infertility treatment. Patient-centric interactions were explicitly conducted in either English and/or regional dialect (Tamil) to make study participants completely aware of their infertility history and treatment-related expenses; psychosocial counseling-based intervention(s): marital-relationship counseling/therapy, timely referrals for psychiatric treatments, primarily cognitive impairment, schizophrenia, and/or clinical depression, further ensured overall psychological well-being of patients, thereby significantly reducing anxiety, distress, depression, social stigma, restlessness, and so on. Core tenets of good practice research, including written informed consent of study participants at time of initial enrollment, were followed.
A careful and thorough assessment of the promising clinical research data highlighted that monthly frequency distribution of infertile cases during the 6-month study timeline, that is, April to September 2019 was 7, 13, 24, 36, 24, and 30 cases, respectively. Mean age and endometrial thickness of eligible participants were 33.3 years (SD ±1.9) and 8.7 mm (SD ±0.5), respectively; average Body Mass Index (BMI) and AMH levels were 28.4 kg/m2 and 4.7 ng/mL, respectively. A very small fraction of the study population (<5%) tested positive for
Biochemical pregnancies were assessed in terms of β-hCG positivity (Table 1); data sets revealed a total of 4, 8, 17, 26, 20, and 22 positive biochemical pregnancies for the months of April, May, June, July, August, and September 2019, respectively. Further subgroup stratification in the study population subsets demonstrated that M-II vs total oocytes retrieval rates per month (April-September 2019/6-months timeline) were 76%, 73%, 60%, 71%, 77%, and 77%. Overall, IVF success rates observed in the infertile cohort of South Indian women were 57% in April, 62% in May, 71% in June, 72% in July, 83% in August, and 73% in September 2019.
Biochemical Pregnancy in South Indian Infertile Women at Chennai, Tamil Nadu, India-Based Fertility Center/Hospital (N = 134 Women)
Discussion
Infertility is a significant public health concern in ethnically disparate cohorts worldwide.
3
The pathophysiology of reproductive disorders, primarily infertility, remains debated in contemporary times; reproductive medicine researchers globally are constantly endeavoring to unravel the interplay between interrelated cell signaling cascades in developmental biology, embryonic induction, human reproduction, reproductive physiology, and reproductive pathophysiology.
4
The complex molecular regulatory networks and biochemical signaling cross talk mechanisms at the maternal-fetal interface are indeed intriguing; a precise understanding of the signaling mechanisms coupled with the overwhelming and diverse array of transmembrane receptors, ion channels, intermediary kinases, transcriptional factors, and target genes and proteins, is essential for successfully elucidating the pharmacological and pathophysiological basis of infertility. Moreover, ethnicity and sociodemographic/lifestyle-related factors and the role of genetic variants and epigenetics are being emphasized in infertility susceptibility in reproductive-aged women of diverse patient population subset(s); the genetic basis of clinical infertility is still to be unraveled for a clear picture of the cellular and molecular regulatory networks involved in the early identification of “at risk” asymptomatic cohort and clinically confirmed symptomatic infertile symptomatic patient-population(s)/cohort. This single-center exploratory study strongly implicates the differential IVF/ICSI success trends among infertile women of South Indian ethnicity. The findings of the present study provide valuable insights in cost-effective infertility management; differential IVF success trends with primary and secondary outcomes/measures in a study timeline of 6 months
Recent years have witnessed a growing interest in cohort-based reproductive medicine research studies, cross-sectional, observational, gene-epidemiology, and/or interventional, addressing fertility preservation and infertility prevention in susceptible women of diverse ethnicities; in this context, well-designed prospective exploratory single-center and large multicentric clinical research epidemiological studies with pooled patient-population subsets of clinically infertile women are enhancing the overall quality of patient care in both low-resource and high-resource settings with an overwhelming mix of patients of different socioeconomic strata, awareness, and/or satisfaction quotients and genetic profiles. Embryo-related research studies are generating tremendous support from the clinical research community and funding bodies so as to dissect the embryo morphokinetics, spatiotemporal patterning and cleavage events, embryonic transfers (fresh and/or frozen), vitrification, cryopreservation, and so on.
5
Time-lapse microscopy is a precision-based novel noninvasive assessment tool with significant potential for enhancing embryo selection during infertility treatment for predicting embryo development and implantation potential; static phenomena are occasionally overlooked using conventional incubators,
Psychological burden of infertility among childless women may be an underlying cause of depressive traits, anxiety, anger, restlessness, and marital discords/family problems; therefore, adequate counseling and motivational talks may be supportive in building an overall positive outlook during the course of IVF treatment.
10
The findings of the present cohort-based study focusing on differential IVF/ICSI success trends in South Indian women with clinical infertility, certainly appear promising and may be utilized for future design and planning of personalized tailor-made individual-specific ovulation induction and IVF treatment regimen(s)/protocol(s); moreover, the author selected a specific ethnic patient population group
Sexual medicine research has seen a reasonable growth in the last 7 decades
11
; however, psychological and cultural factors associated with the development of various sexual dysfunctions have not received considerable attention for evaluating indigenously designed psychosexual interventions/strategies for cost-effective, public health-oriented management of female as well as male sexual disorders in infertile couples of varying genetic landscapes worldwide. A well-structured questionnaire comprising marital-relationship assessment, psychoeducation, and cognitive behavioral interventions
12
should prove beneficial in addressing the psychosexual problems encountered in infertile couples’ marital-relationship/interactions; infertile women and their partners/husbands should receive comprehensive, patient-friendly care from providers (urologists, gynecologists, infertility specialists, psychiatrists) with timely referrals to psychiatry outpatient services and sexual medicine clinics. Recent studies in the nascent sexual medicine research field have demonstrated that erectile dysfunction, premature ejaculation, and Dhat syndrome are the most common psychosexual dysfunctions observed in psychiatry outpatients13,14; moreover, promising data sets are now available from patient-centric studies in Indian population(s) focusing on the psychosexual side effects associated with psychotropic medications
Conclusions
Overall, key take-home messages include: (a) infertility is a major public health problem in both United States of America as well as India with considerable psychosocial distress in healthy, mutually compatible marital relationship; differential IVF/ICSI success trends among infertile women of South Indian ethnicity warrant the urgency of developing feasible, cost-effective, patient-friendly, public health-oriented awareness-based treatment modalities for efficacious infertility management protocols/strategies for reproductive-aged infertile women of varying genetic landscapes and socioeconomic strata with asymptomatic and/or symptomatic psychiatric disorders. (b) Embryo-quality assessments and oocytes’ yields, including M-II oocytes turnovers, endometrial thickness, increasing age, altered AMH profiles, and dietary/lifestyle-related patterns including caffeine/tobacco usage, are meaningful predictors of overall IVF success in precision-based sophisticated assisted reproduction technology laboratories and IVF centers globally; quality assurance and quality control in IVF is essential for enhancing pregnancy rates, including live birth rates, with well-justified utilization of healthcare resources. (c) Public health research models incorporating large sample size of infertile cohorts of specific patient population subsets residing in different geographical regions are warranted for early risk assessment and timely referrals to psychiatric outpatient clinics and/or sexual medicine clinics; sexual disorders/infertility-awareness campaigns, pharmacogenetic/genomic studies, and psychosexual interventions (marital-relationship counseling sessions/therapy, timely referrals for psychiatric assessments: cognitive impairment/schizophrenia/depression/stigma, pharmacological, and nonpharmacological treatment strategies) should be effectively designed for infertility prevention and successfully implemented for robust clinical management globally.
Footnotes
Acknowledgements
The author is grateful to clinical IVF team/staff at Indira IVF Hospital, Chennai, Tamil Nadu, India, expert panels at Indira IVF Udaipur and Lucknow, including Dr A Murdia (MD), for relevant clinical infrastructure, including patients’ enrollment during the study.
Declaration of Conflicting Interests
The author declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article.
Funding
The author received no financial support for the research, authorship, and/or publication of this article.
