# Vitamin D and Endometrial Receptivity in Infertile Women

> **NCT04721899** · — · RECRUITING · sponsor: **The University of Hong Kong** · enrollment: 105 (estimated)

## Conditions studied

- Infertility

## Interventions

- **DIETARY_SUPPLEMENT:** Vitamin D

## Key facts

- **NCT ID:** NCT04721899
- **Lead sponsor:** The University of Hong Kong
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** RECRUITING
- **Start date:** 2021-01-15
- **Primary completion:** 2025-02-01
- **Final completion:** 2026-08-01
- **Target enrollment:** 105 (ESTIMATED)
- **Last updated:** 2024-05-14


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT04721899

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT04721899, "Vitamin D and Endometrial Receptivity in Infertile Women". Retrieved via AI Analytics 2026-06-15 from https://api.ai-analytics.org/clinical/NCT04721899. Licensed CC0.

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*[Clinical trials dataset](/datasets/clinical-trials) · CC0 1.0*