Abstract
Purpose
The aim of the present systematic review and meta-analysis was to summarize evidence on the effectiveness of testosterone supplementation for poor ovarian responders (POR) on IVF outcomes. The primary outcome was live birth rate (LBR); secondary outcomes were clinical pregnancy rate (CPR), miscarriage rate (MR), total and MII oocytes, and total embryos.
Methods
This meta-analysis of randomized controlled trials (RCTs) evaluates the effects of testosterone administration before/during COS compared with a control group in patients defined as POR. The primary outcome was live birth rate (LBR); secondary outcomes were clinical pregnancy rate (CPR), miscarriage rate (MR), total and MII oocytes, and total embryos. Pooled results were expressed as risk ratio (RR) or mean differences (MD) with 95% confidence interval (95% CI). Sources of heterogeneity were investigated through sensitivity and subgroup analysis. All analyses were performed by using the random-effects model.
Results
Women receiving testosterone showed higher LBR (RR 2.29, 95% CI 1.31–4.01, p = 0.004), CPR (RR 2.32, 95% CI 1.47–3.64, p = 0.0003), total oocytes (MD = 1.28 [95% CI 0.83, 1.73], p < 0.00001), MII oocytes (MD = 0.96 [95% CI 0.28, 1.65], p = 0.006), and total embryos (MD = 1.17 [95% CI 0.67, 1.67], p < 0.00001) in comparison to controls, with no difference in MR (p = ns). Sensitivity and subgroup analysis did not provide statistical changes to the pooled results.
Conclusions
Testosterone therapy seems promising to improve the success at IVF in POR patients. Further RCTs with rigorous methodology and inclusion criteria are still mandatory.
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M.N., A.V., G.A., and M.C. conceptualized the study; M.N., M.C., and A.V. extracted the data; A.V. and F.C. performed the statistical analysis; M.N., A.V., A.A., and G.A. performed the data interpretation; M.N., A.A., M.C., and G.A. wrote the manuscript; M.B., P.V., E.P., and M.S. performed the manuscript revision for fundamental intellectual content, language revision, and manuscript re-editing.
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Marco Noventa and Amerigo Vitagliano gave the same contribution to the paper. Guido Ambrosini and Mauro Cozzolino gave the same contribution to the paper.
Electronic supplementary material
Table S1
General features and basal hormonal status of patients (treatments and controls) included in this systematic review and meta-analysis divided for each manuscript. (DOCX 19 kb)
Table S2
Data about COS outcomes (treatments vs controls) of patients included in this systematic review and meta-analysis divided for each manuscript. (DOCX 14 kb)
Table S3
Data about IVF outcomes (treatments vs controls) of patients included in this systematic review and meta-analysis divided for each manuscript. (DOCX 17 kb)
Figure S1
Flow diagram of included studies (DOCX 65 kb)
Figure S2
Risk of bias in individual studies evaluated through criteria described in the Cochrane’s Handbook for Systematic Reviews of Interventions (PNG 961 kb)
Figure S3a
Forest plot of comparison: live birth rate (LBR) according to administration route of testosterone: transdermal versus oral. Fig. S3b: Forest plot of comparison: clinical pregnancy rate (CPR) according to administration route of testosterone: transdermal versus oral (PNG 2071 kb)
Figure S4a
Forest plot of comparison: live birth rate according to the days of testosterone administration; ≥ 21 days versus < 21 days. Fig. S4b: Forest plot of comparison: clinical pregnancy rate according to the days of testosterone administration; ≥ 21 days versus < 21 days (PNG 2014 kb) (PNG 2014 kb)
Figure S5
Clinical pregnancy rate according to the timing of testosterone administration: before the starting of ovarian stimulation versus during ovarian stimulation (PNG 1076 kb)
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Noventa, M., Vitagliano, A., Andrisani, A. et al. Testosterone therapy for women with poor ovarian response undergoing IVF: a meta-analysis of randomized controlled trials. J Assist Reprod Genet 36, 673–683 (2019). https://doi.org/10.1007/s10815-018-1383-2
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DOI: https://doi.org/10.1007/s10815-018-1383-2