PMID- 33966411 OWN - NLM STAT- MEDLINE DCOM- 20210514 LR - 20210514 IS - 2224-5839 (Electronic) IS - 2224-5820 (Linking) VI - 10 IP - 4 DP - 2021 Apr TI - Effectiveness and safety of aspirin combined with letrozole in the treatment of polycystic ovary syndrome: a systematic review and meta-analysis. PG - 4632-4641 LID - 10.21037/apm-21-606 [doi] AB - BACKGROUND: Meta-analysis was used to evaluate the efficacy and safety of aspirin combined with letrozole in the treatment of polycystic ovary syndrome (PCOS). METHODS: Through comprehensive searches of the China Knowledge Network (CNKI), the VIP database (VIP), the Wanfang database, the China Biomedical Database (CBM), PubMed, EMBASE, and the Cochrane Library, the clinical randomized controlled trials (RCTs) published on aspirin combined with letrozole in the treatment of PCOS were collected. According to the inclusion and exclusion criteria, the included studies were screened and quality evaluated, and RevMan 5.3 software was used for meta-analysis. RESULTS: A total of 10 RCTs and 948 patients with PCOS were included. Meta-analysis results showed that compared with letrozole monotherapy, aspirin combined with letrozole could significantly increase the thickness of the endometrium [MD=1.98, 95% CI: 1.63-2.34, P<0.00001], cervical mucus scores (MD =1.65, 95% CI: 1.32-1.98, P<0.00001), the ovulation rate (OR=3.50, 95% CI: 2.08-5.91, P<0.00001), the number of mature follicles (MD=0.65, 95% CI: 0.51-0.78, P<0.00001), and the pregnancy rate (OR=3.06, 95% CI: 2.28-4.12, P<0.00001), and significantly reduced the abortion rate (OR=0.20, 95% CI: 0.11-0.38, P<0.00001). There was no statistically significant difference in the incidence of adverse reactions between the 2 groups (OR=0.76, 95% CI: 0.44-1.32, P=0.33). CONCLUSIONS: Aspirin combined with letrozole in the treatment of PCOS is safe and effective. Due to the limitations in the number and quality of the included studies, further verification with multi-center, large-sample, high-quality RCTs is still needed. FAU - Yu, Qinjian AU - Yu Q AD - Department of Obstetrics and Gynecology, The Dingli Clinical College of Wenzhou Medical University, Wenzhou, China. FAU - Wang, Zhihui AU - Wang Z AD - Department of Obstetrics and Gynecology, The Dingli Clinical College of Wenzhou Medical University, Wenzhou, China. FAU - Su, Fangfang AU - Su F AD - Department of Obstetrics and Gynecology, The Dingli Clinical College of Wenzhou Medical University, Wenzhou, China. FAU - Wang, Mianmian AU - Wang M AD - Department of Obstetrics and Gynecology, The Dingli Clinical College of Wenzhou Medical University, Wenzhou, China. LA - eng PT - Journal Article PT - Meta-Analysis PT - Systematic Review PL - China TA - Ann Palliat Med JT - Annals of palliative medicine JID - 101585484 RN - 7LKK855W8I (Letrozole) RN - R16CO5Y76E (Aspirin) SB - IM MH - Aspirin/therapeutic use MH - China MH - Female MH - Humans MH - Letrozole/therapeutic use MH - Ovulation Induction MH - *Polycystic Ovary Syndrome/drug therapy MH - Pregnancy OTO - NOTNLM OT - Aspirin OT - letrozole OT - meta-analysis OT - polycystic ovary syndrome (PCOS) EDAT- 2021/05/11 06:00 MHDA- 2021/05/15 06:00 CRDT- 2021/05/10 05:29 PHST- 2021/02/05 00:00 [received] PHST- 2021/04/17 00:00 [accepted] PHST- 2021/05/10 05:29 [entrez] PHST- 2021/05/11 06:00 [pubmed] PHST- 2021/05/15 06:00 [medline] AID - 10.21037/apm-21-606 [doi] PST - ppublish SO - Ann Palliat Med. 2021 Apr;10(4):4632-4641. doi: 10.21037/apm-21-606.