NCT04721899

Vitamin D and Endometrial Receptivity in Infertile Women

Effect of Vitamin D on Vaginal / Endometrial Biomarkers and Endometrial Receptivity in Women With Fertility Problems

• Status: Recruiting
• Phase: —
• Study type: Observational
• Enrollment: 105 (estimated)
• Sponsor: The University of Hong Kong · Academic / Other
• Sex: Female
• Age: 18 Years – 40 Years
• Healthy volunteers: Not accepted

Summary

This is a prospective study comparing vaginal and endometrial biomarkers and the trophoblast spheroid attachment rate in women with fertility problems before and after taking Vitamin D for 8 weeks.

Detailed description

The aim of this study is to assess the effect of vitamin D supplementation on vaginal / endometrial biomarkers and endometrial receptivity in women with fertility problems. Women will have vaginal swab and endometrial biopsy twice. The first endometrial biopsy is performed using a Pipelle sampler 7 days after luteinizing hormone surge (LH+7) at baseline and the attachment rate of the trophoblast spheroid onto the isolated endometrial epithelial cells will be assessed to assess endometrial receptivity at baseline. Implantation biomarkers will be checked. They will take Vitamin D 50,000 IU once per week for 4 weeks, followed by 50,000 IU once every 2 weeks for 4 weeks. After 8 weeks of Vitamin D, a second vaginal swab and endometrial biopsy using a Pipelle sampler by standard technique will be collected from the patients 7 days after luteinizing hormone surge (LH+7) and the endometrial receptivity will be compared. The laboratory staff will not know whether the patient is taking any vitamin D when performing the trophoblast spheroid attachment assay/ biomarkers.

Conditions

• Infertility

Interventions

Type	Name	Description
DIETARY_SUPPLEMENT	Vitamin D	Vitamin D 50,000 IU once per week for 4 weeks, followed by 50,000 IU once every 2 weeks for 4 weeks

Timeline

• Start date: 2021-01-15
• Primary completion: 2025-02-01
• Completion: 2026-08-01
• First posted: 2021-01-25
• Last updated: 2024-05-14

Locations

1 site across 1 country: Hong Kong