Efficacy of metformin on pregnancy complications in women with polycystic ovary syndrome: a meta-analysis
Abstract
OBJECTIVE: To evaluate the efficacy of metformin administration throughout pregnancy on pregnancy-related complications in women with polycystic ovary syndrome (PCOS). STUDY DESIGN: MEDLINE and ScienceDirect were searched to retrieve relevant trials. The endpoint was the incidence of complications of pregnancy, gestational diabetes mellitus (GDM), pre-eclampsia (PE), miscarriage and premature birth included. RESULTS: Five studies with 502 PCOS patients with metformin administration throughout pregnancy and 427 controls who used metformin just to get conception were included in our meta-analysis. In study group, a significantly lower change of emerging miscarriage and premature birth was observed, the pooled relative risk (RR) was 0.32 (95% confidence interval (CI): 0.19-0.56) for miscarriage and 0.40 (95%CI: 0.18-0.91) for premature birth. No significant difference was demonstrated in emerging GDM and PE. CONCLUSIONS: Metformin therapy throughout pregnancy can reduce the RR of miscarriage and premature birth incidence in PCOS patients with no serious side effects.
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Evidence regarding the impact of metformin on the incidence of gestational diabetes mellitus is controversial.
“Evidence regarding the impact of metformin on the incidence of GDM is controversial [58–61].”
From From Prediabetes to Type 2 Diabetes Mellitus in Women with Polycystic Ovary Syndrome: Lifestyle and Pharmacological Management (2020) · cites this paper as [58]
Cites
1 retracted
Khattab, S., Mohsen, I. A., Foutouh, I. A., ashmawi, H. S., Mohsen, M., van Wely, M., van der Veen, F., & Youssef, M. A. F. M. (2011) · Gynecological Endocrinology · doi:10.3109/09513590.2010.540600 · Cited by 69 · see citing works
RetractedQuantifying heterogeneity in a meta‐analysis
Higgins, J. P. T., & Thompson, S. G. (2002) · Statistics in Medicine · doi:10.1002/sim.1186 · Cited by 36,763 · see citing works
Operating characteristics of a rank correlation test for publication bias
Begg, C. B., & Mazumdar, M. (1994) · Biometrics · doi:10.2307/2533446 · Cited by 16,955 · see citing works
The Rotterdam ESHRE/ASRM-sponsored PCOS consensus workshop group (2004) · Human Reproduction · doi:10.1093/humrep/deh098 · Cited by 6,138 · see citing works
The Prevalence and Features of the Polycystic Ovary Syndrome in an Unselected Population
Azziz, R., Woods, K. S., Reyna, R., Key, T. J., Knochenhauer, E. S., & Yıldız, B. O. (2004) · The Journal of Clinical Endocrinology & Metabolism · doi:10.1210/jc.2003-032046 · Cited by 2,715 · see citing works
Franks, S. (1995) · New England Journal of Medicine · doi:10.1056/nejm199509283331307 · Cited by 2,463 · see citing works
Men at risk: occupation and male infertility.
Claman, P. (2004) · Fertility and Sterility · doi:10.1016/s0015-0282(03)01188-9 · Cited by 2,219 · see citing works
Knochenhauer, E. S., Key, T. J., Kahsar-Miller, M., Waggoner, W., Boots, L. R., & Azziz, R. (1998) · The Journal of Clinical Endocrinology & Metabolism · doi:10.1210/jcem.83.9.5090 · Cited by 1,568 · see citing works
Norman, R. J., Dewailly, D., Legro, R. S., & Hickey, T. E. (2007) · The Lancet · doi:10.1016/s0140-6736(07)61345-2 · Cited by 1,360 · see citing works
Asunción, M., Calvo, R. M., Millán, J. L. S., Sancho, J., Ávila, S., & Escobar-Morreale, H. F. (2000) · The Journal of Clinical Endocrinology & Metabolism · doi:10.1210/jcem.85.7.6682 · Cited by 1,328 · see citing works
Diamanti‐Kandarakis, E., Kouli, C., Bergiele, A. T., Filandra, F. A., Tsianateli, T. C., Spina, G., Zapanti, E. D., & Bartzis, M. I. (1999) · The Journal of Clinical Endocrinology & Metabolism · doi:10.1210/jcem.84.11.6148 · Cited by 1,107 · see citing works
Lawrence, J., Douglas, P., & Gandy, J. (2016) · doi:10.1002/9781119163411.ch73 · Cited by 1,014 · see citing works
A meta-analysis of pregnancy outcomes in women with polycystic ovary syndrome
Boomsma, C. M., Eijkemans, M. J. C., Hughes, E. G., Visser, G. H. A., Fauser, B. C. J. M., & Macklon, N. S. (2006) · Human Reproduction Update · doi:10.1093/humupd/dml036 · Cited by 852 · see citing works
Franks, S. (1997) · Archives of Disease in Childhood · doi:10.1136/adc.77.1.89 · Cited by 802 · see citing works
Metformin in polycystic ovary syndrome: systematic review and meta-analysis
Lord, J. M., Flight, I. H. K., & Norman, R. J. (2003) · BMJ · doi:10.1136/bmj.327.7421.951 · Cited by 786 · see citing works
Meta-Analyst: software for meta-analysis of binary, continuous and diagnostic data
Wallace, B., Schmid, C. H., Lau, J., & Trikalinos, T. A. (2009) · BMC Medical Research Methodology · doi:10.1186/1471-2288-9-80 · Cited by 658 · see citing works
Effects of metformin on early pregnancy loss in the polycystic ovary syndrome
Jakubowicz, D., Iuorno, M., Jakubowicz, S., Roberts, K. A., Nestler, J., & Fabbri, A. (2002) · Journal of Clinical Endocrinology and Metabolism · doi:10.1210/jcem.87.2.8207 · Cited by 539 · see citing works
Polycystic ovaries and associated clinical and biochemical features in young women
Michelmore, K. F., Balen, A. H., Dunger, D. B., & Vessey, M. P. (1999) · Clinical Endocrinology · doi:10.1046/j.1365-2265.1999.00886.x · Cited by 433 · see citing works
Glueck, C. J., Phillips, H., Cameron, D., Sieve-Smith, L., & Wang, P. (2001) · Fertility and Sterility · doi:10.1016/s0015-0282(00)01666-6 · Cited by 429 · see citing works
Pregnancy outcomes among women with polycystic ovary syndrome treated with metformin
Glueck, C. J., Wang, P., Goldenberg, N., & Sieve-Smith, L. (2002) · Human Reproduction · doi:10.1093/humrep/17.11.2858 · Cited by 384 · see citing works
Qin, J. Z., Pang, L. H., Li, M. J., Fan, X. J., Huang, R. D., & Chen, H. Y. (2013) · Reproductive Biology and Endocrinology · doi:10.1186/1477-7827-11-56 · Cited by 317 · see citing works
Vanky, E., Stridsklev, S., Heimstad, R., Romundstad, P., Skogøy, K., Kleggetveit, O., Hjelle, S., von Brandis, P., Eikeland, T., Flo, K., et al. (2010) · The Journal of Clinical Endocrinology & Metabolism · doi:10.1210/jc.2010-0853 · Cited by 315 · see citing works
Tehrani, F. R., Simbar, M., Tohidi, M., Hosseinpanah, F., & Azizi, F. (2011) · Reproductive Biology and Endocrinology · doi:10.1186/1477-7827-9-39 · Cited by 300 · see citing works
Morin-Papunen, L., Rantala, A. S., Unkila-Kallio, L., Tiitinen, A., Hippeläinen, M., Perheentupa, A., Tinkanen, H., Bloigu, R., Puukka, K., Ruokonen, A., et al. (2012) · The Journal of Clinical Endocrinology & Metabolism · doi:10.1210/jc.2011-3061 · Cited by 243 · see citing works
Vanky, E., Salvesen, K., Heimstad, R., Fougner, K., Romundstad, P., & Carlsen, S. (2004) · Human Reproduction · doi:10.1093/humrep/deh347 · Cited by 242 · see citing works
Prevalence of polycystic ovary syndrome in unselected women from southern China
Chen, X., Yang, D., Mo, Y., Li, L., Chen, Y., & Huang, Y. (2008) · European Journal of Obstetrics & Gynecology and Reproductive Biology · doi:10.1016/j.ejogrb.2007.12.018 · Cited by 170 · see citing works
Palomba, S., Falbo, A. I., Orio, F., & Zullo, F. (2008) · Fertility and Sterility · doi:10.1016/j.fertnstert.2008.08.087 · Cited by 134 · see citing works
Metformin, pre-eclampsia, and pregnancy outcomes in women with polycystic ovary syndrome
Glueck, C. J., Bornovali, S., Pranikoff, J., Goldenberg, N., Dharashivkar, S., & Wang, P. (2004) · Diabetic Medicine · doi:10.1111/j.1464-5491.2004.01251.x · Cited by 115 · see citing works
Thatcher, S. S., & Jackson, E. (2006) · Fertility and Sterility · doi:10.1016/j.fertnstert.2005.09.047 · Cited by 108 · see citing works
Heard, M., Pierce, A., Carson, S. A., & Buster, J. E. (2002) · Fertility and Sterility · doi:10.1016/s0015-0282(01)03266-6 · Cited by 107 · see citing works
Metformin reduces abortion in pregnant women with polycystic ovary syndrome
Khattab, S., Mohsen, I. A., Foutouh, I. A., Ramadan, A. R., Moaz, M., & Al-Inany, H. G. (2006) · Gynecological Endocrinology · doi:10.1080/09513590601010508 · Cited by 98 · see citing works
Nawaz, F. H., Khalid, R., Naru, T. Y., & Rizvi, J. (2008) · Journal of obstetrics and gynaecology research · doi:10.1111/j.1447-0756.2008.00856.x · Cited by 91 · see citing works
Leo, V. D., Musacchio, M. C., Piomboni, P., Sabatino, A. D., & Morgante, G. (2011) · European Journal of Obstetrics & Gynecology and Reproductive Biology · doi:10.1016/j.ejogrb.2011.03.024 · Cited by 89 · see citing works
Begum, M. R., Khanam, N. N., Quadir, E., Ferdous, J., Begum, M. S., Khan, F. I., & Begum, A. (2008) · Journal of obstetrics and gynaecology research · doi:10.1111/j.1447-0756.2008.00876.x · Cited by 70 · see citing works
Ghazeeri, G. S., Nassar, A. H., Younes, Z. M. H., & Awwad, J. T. (2012) · Acta Obstetricia Et Gynecologica Scandinavica · doi:10.1111/j.1600-0412.2012.01385.x · Cited by 66 · see citing works
Bolton, S., Cleary, B., Walsh, J., Dempsey, E., & Turner, M. J. (2009) · European Journal of Pediatrics · doi:10.1007/s00431-008-0737-7 · Cited by 45 · see citing works
Nawaz, F. H., & Rizvi, J. (2009) · Gynecologic and Obstetric Investigation · doi:10.1159/000268051 · Cited by 43 · see citing works
Neonatal outcome in polycystic ovarian syndrome patients treated with metformin during pregnancy
Kovo, M., Weissman, A., Gur, D., Levran, D., Rotmensch, S., & Glezerman, M. (2006) · The Journal of Maternal-Fetal & Neonatal Medicine · doi:10.1080/14767050600682370 · Cited by 37 · see citing works
Premature delivery and the millennium development goal.
Nour, N. M. (2012) · PubMed · Cited by 33 · see citing works
Preterm birth, an unresolved issue
Belizán, J. M., Hofmeyr, G. J., Buekens, P. M., et al. (2013) · Reproductive Health · doi:10.1186/1742-4755-10-58 · Cited by 22 · see citing works
Hameed, A. A. A. E., Shreif, H. E., & Mowafy, H. E. M. (2011) · Middle East Fertility Society Journal · doi:10.1016/j.mefs.2011.04.002 · Cited by 20 · see citing works
Minimal brain dysfunction in children born in breech presentation
Fianu, S., & Joelsson, I. (1979) · Acta Obstetricia Et Gynecologica Scandinavica · doi:10.3109/00016347909154052 · Cited by 18 · see citing works
How Metformin Acts in PCOS Pregnant Women
Romualdi, D., Cicco, S. D., Gagliano, D., Busacca, M., Campagna, G., Lanzone, A., & Guido, M. (2013) · Diabetes Care · doi:10.2337/dc12-2071 · Cited by 16 · see citing works
Effect of metformin on miscarriage in pregnant patients with polycystic ovary syndrome.
Sohrabvand, F., Shariat, M., Haghollahi, F., & Bagheri, B. (2009) · PubMed · Cited by 14 · see citing works
Malik, S., Katoch, K., & Allahbadia, G. N. (2004) · International Congress Series · doi:10.1016/j.ics.2004.07.001 · Cited by 2 · see citing works
Preterm erken membran rüptürü olgularında yenidoğan hastalık ve ölüm oranı sonuçları
Gezer, A., Yalçıner, E. P., Güralp, O., et al. (2011) · Türk Pediatri Arşivi · doi:10.4274/tpa.46.1394 · Cited by 1 · see citing works
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Romero, R., Erez, O., Hüttemann, M., Maymon, E., Panaitescu, B., Conde-Agudelo, A., Pacora, P., Yoon, B. H., & Grossman, L. I. (2017) · American Journal of Obstetrics and Gynecology · doi:10.1016/j.ajog.2017.06.003 · Cited by 253 · see citing works
Polycystic ovary syndrome throughout a woman’s life
Group of interest in Reproductive Endocrinology (GIER) of the Spanish Fertility Society (SEF), Bellver, J., Rodríguez-Tabernero, L., Robles, A., Muñoz, E., Martínez, F., Landeras, J., García-Velasco, J., Fontes, J., Álvarez, M., et al. (2018) · Journal of Assisted Reproduction and Genetics · doi:10.1007/s10815-017-1047-7 · Cited by 180 · see citing works
Patel, R., & Shah, G. (2017) · Current Medical Research and Opinion · doi:10.1080/03007995.2017.1279597 · Cited by 47 · see citing works
Bidhendi Yarandi, R., Behboudi-Gandevani, S., Amiri, M., & Ramezani Tehrani, F. (2019) · Diabetology & Metabolic Syndrome · doi:10.1186/s13098-019-0453-7 · Cited by 29 · see citing works
Doi, S. A. R., Furuya‐Kanamori, L., Toft, E., Musa, O. A. H., Islam, N., Clark, J., & Thalib, L. (2020) · Obesity Reviews · doi:10.1111/obr.12964 · Cited by 39 · see citing works
Pani, A., Gironi, I., Di Vieste, G., Mion, E., Bertuzzi, F., & Pintaudi, B. (2020) · International Journal of Endocrinology · doi:10.1155/2020/6276187 · Cited by 38 · see citing works
- Authors
- Feng, L., Lin, X.-F., Wan, Z.-H., Hu, D., & Du, Y.-K.
- Affiliations
- Huazhong University of Science and Technology (CN)
- ORCID
- Hu, Dan
- Venue
- Gynecological Endocrinology
- Publisher
- Informa UK Limited
- Published
- 2015-10-06
- Volume
- 31
- Issue
- 11
- Pages
- 833-839
- ISSN
- 0951-3590 (ISSN-L)
- 1473-0766
- OpenAlex
- W1842453750
- Cited by
- 50
- References
- 46
- Citations by year
- 2026: 2 · 2025: 3 · 2024: 3 · 2023: 1 · 2022: 4 · 2021: 9 · 2020: 5 · 2019: 5 · 2018: 7 · 2017: 7 · 2016: 4
- FWCI
- 0.90
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Gynecological Endocrinology (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Reproductive Medicine › Ovarian function and disorders
- Health Sciences › Medicine › Obstetrics and Gynecology › Gestational Diabetes Research and Management
- Health Sciences › Medicine › Pediatrics, Perinatology and Child Health › Assisted Reproductive Technology and Twin Pregnancy
- Keywords
- metformin, polycystic ovary syndrome, pregnancy complications, miscarriage, preterm birth, gestational diabetes mellitus, preeclampsia
- MeSH terms
- Abortion, Spontaneous, Female, Humans, Hypoglycemic Agents, Metformin, Polycystic Ovary Syndrome, Pre-Eclampsia, Pregnancy, Pregnancy Complications, Incidence, Case-Control Studies, Diabetes, Gestational, Premature Birth
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