Vitamin D & Pregnancy Outcome in PCOS Patients

Status Recruiting

Clinical Trial Summary

This multicenter double-blinded placebo-controlled randomised trial aims to evaluate the effectiveness of vitamin D supplementation prior to IVF on the live birth rate in women with PCOS. Women with PCOS scheduled for IVF will be enrolled. Eligible participants will be randomised 1:1 to receive oral capsules of 4000IU vitamin D per day or placebo for around 12 weeks until the day of triggering.

Clinical Trial Description

Polycystic ovary syndrome (PCOS) is one of the leading causes of female infertility, affecting around 5% of women with a child-bearing age in China. Vitamin D insufficiency is common in women with PCOS and is associated with lower live birth rates in these women. However, evidence regarding the effectiveness of vitamin D treatment in women with PCOS is inconclusive. This multicenter double-blinded placebo-controlled randomised trial aims to evaluate the effectiveness of vitamin D supplementation prior to IVF on the live birth rate in women with PCOS. The investigators plan to enroll women with PCOS scheduled for IVF. Eligible participants will be randomised 1:1 to receive oral capsules of 4000IU vitamin D per day or placebo for around 12 weeks until the day of triggering. All IVF procedures will be carried out following a routine method in each center. Women will be followed up until six months after randomisation for those who fail to get pregnant after the completion of the first embryo transfer or delivery for those who get pregnant after the first embryo transfer. The primary outcome is live birth after the first embryo transfer. Primary analysis will be by intention-to-treat analysis. The investigators plan to recruit 860 women to demonstrate women treated with vitamin D have a higher live birth rate than those treated with placebo (48% versus 38%), accounting for 10% loss to follow-up with a significance level at 0.05 and a power of 80%. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details

NCT number	NCT04082650
Study type	Interventional
Source	Women's Hospital School Of Medicine Zhejiang University
Contact	Dan Zhang, M.D. Ph.D.
Phone	86-0571-87061501-1008
Email	zhangdan@zju.edu.cn
Status	Recruiting
Phase	N/A
Start date	October 15, 2020
Completion date	March 10, 2024

View Details

See also
Status	Clinical Trial	Phase
Completed	`NCT03142633` - MicroRNA as Biomarkers for Development of Metabolic Syndrome in Women With Polycystic Ovary Syndrome
Completed	`NCT06158932` - A Single Group Study to Evaluate the Effects of a Myo-Inositol and D-Chiro Inositol Supplement on Symptoms Associated With Polycystic Ovary Syndrome and Hormone Imbalance	N/A
Completed	`NCT03644524` - Heat Therapy and Cardiometabolic Health in Obese Women	N/A
Active, not recruiting	`NCT02500147` - Metformin for Ectopic Fat Deposition and Metabolic Markers in Polycystic Ovary Syndrome (PCOS)	Phase 4
Completed	`NCT04932070` - Berberine and Polycystic Ovary Syndrome	N/A
Suspended	`NCT03652987` - Endocrine and Menstrual Disturbances in Women With Polycystic Ovary Syndrome (PCOS)
Completed	`NCT03480022` - Liraglutide 3mg (Saxenda) on Weight, Body Composition, Hormonal and Metabolic Parameters in Obese Women With PCOS	Phase 3
Active, not recruiting	`NCT03043924` - Functional Study of the Hypothalamus in Magnetic Resonance Imaging (MRI) in Polycystic Ovary Syndrome (PCOS)	N/A
Completed	`NCT05246306` - Aerobic Capacity and Physical Fitness Level of Adolescents With PCOS
Completed	`NCT05981742` - Effects of Combined Metformin and Cabergoline in Comparison With Metformin Only Therapy on Ovarian and Hormonal Activities in Iraqi Patients With PCOS	Phase 2
Completed	`NCT05702957` - Letrozole vs Clomiphene Citrate for Induction of Ovulation in Women With Polycystic Ovarian Syndrome	Phase 2/Phase 3
Completed	`NCT05029492` - Effect of Visceral Manipulation on PCOS	N/A
Not yet recruiting	`NCT02255578` - Endobarrier Treatment in Women With PCOS	Phase 3
Completed	`NCT02924025` - Motivational Interviewing as an Intervention for PCOS	N/A
Not yet recruiting	`NCT00883259` - Metformin and Gestational Diabetes in High-risk Patients: a RCTs	Phase 4
Completed	`NCT02098668` - Mathematical Model for the Human Menstrual Cycle, Endocrinological Diseases and Fertility Treatment-PAEON	N/A
Withdrawn	`NCT01638988` - Clomifene Citrate Versus Metformin in First-line Treatment of Infertility in Patients With Polycystic Ovary Syndrome and a Resistance to Insulin	Phase 3
Completed	`NCT01462864` - Development of a Structured Education Programme for Women With Polycystic Ovary Syndrome	N/A
Recruiting	`NCT01431352` - Letrozole Versus Chinese Herbal Medicine on Polycystic Ovary Syndrome (PCOS)	N/A
Completed	`NCT00989781` - Mechanisms of Increased Androgen Production Among Women With Polycystic Ovary Syndrome	N/A

Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.

Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.

Vitamin D and Pregnancy Outcome in PCOS Patients

Clinical Trial Summary

Clinical Trial Description

Study Design

Related Conditions & MeSH terms