Effects of a Chinese Patent Medicine Gushen'antai Pills on Ongoing Pregnancy Rate of Hormone Therapy FET Cycles: A Multi-Center, Randomized, Double-Blind, Placebo-Controlled Clinical Trial

Xian-Ling Cao, Jing-Yan Song, Xing-Xing Zhang, Yan-Hua Chen, Yi-Li Teng, Hai-Ping Liu, Tai-You Deng, Zhen-Gao Sun, Xian-Ling Cao, Jing-Yan Song, Xing-Xing Zhang, Yan-Hua Chen, Yi-Li Teng, Hai-Ping Liu, Tai-You Deng, Zhen-Gao Sun

Abstract

In the past decade, the number of frozen-thawed embryo transfer (FET) has increased dramatically with the expansion of surgical indications and the improvement of freezing related technologies. How to improve the success rate and reduce the adverse effects of FET is our research priorities. This study aimed to investigate the safety and effectiveness of Gushen'antai pills (GSATP) by measuring the ongoing pregnancy rate (OPR) in patients from FET and hormone therapy (HT) cycle. From November 2019 to May 2020, 5 Chinese hospitals conducted a multi-center, randomized, double-blind, placebo-controlled study. In total, 271 HT FET cycles in patients were randomly divided (1:1 ratio) to receive GSATP (6 g, tid) or placebo (6g, tid) for 12 weeks of pregnancy. Patients, clinicians, and researchers were blinded to treatment allocation. The primary endpoint was the OPR at week 12 of pregnancy. The secondary endpoints were vaginal bleeding or brown discharge rate, implantation rate (IR), clinical pregnancy rate (CPR) and abortion rate (AR). Adverse events were recorded during the treatment period. The results showed that the OPR remained higher in the GSATP group when compared to placebo group (56.62% vs. 44.44%, p = 0.045). Vaginal bleeding or brown discharge rate was lower in the GSATP group than the placebo group (10% vs. 23.08%, p = 0.032), while the IR (35.16% vs. 27.64%, p = 0.070), CPR (58.82% vs. 48.15%, p = 0.078), incidence of total adverse events (8.09% vs. 3.22%, p = 0.051) and AR (3.75% vs. 7.69%, p = 0.504) were similar between GSATP and placebo groups. Subgroup analysis showed that there were significant differences in CPR (74.19% vs. 54.17%, p = 0.004) and OPR (72.04% vs. 51.04%, p = 0.003) between GSATP group and Placebo group when the patient was younger than 35 years old. This multi-center, randomized, double-blinded, placebo-controlled clinical study showed for the first evidence that GSATP may have potential to improve the OPR and decrease vaginal bleeding or brown discharge rate in HT FET cycle patients.

Keywords: Gushen’antai pills; frozen-thawed embryo transfer; hormone therapy; ongoing pregnancy rate; randomized controlled trials.

Copyright © 2020 Cao, Song, Zhang, Chen, Teng, Liu, Deng and Sun.

Figures

Figure 1
Figure 1
CONSORT diagram of participant randomization, treatment, and follow-up for ongoing pregnancy.

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