# Immediate Versus Delayed Natural Cycle Frozen Embryo Transfers

> **NCT05215119** · — · COMPLETED · sponsor: **Antalya IVF** · enrollment: 818 (actual)

## Conditions studied

- Clinical Pregnancy

## Interventions

- **PROCEDURE:** natural cycle endometrial preparation

## Key facts

- **NCT ID:** NCT05215119
- **Lead sponsor:** Antalya IVF
- **Sponsor class:** OTHER
- **Phase:** —
- **Study type:** OBSERVATIONAL
- **Status:** COMPLETED
- **Start date:** 2022-03-04
- **Primary completion:** 2025-02-08
- **Final completion:** 2025-02-08
- **Target enrollment:** 818 (ACTUAL)
- **Last updated:** 2025-02-11


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT05215119

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT05215119, "Immediate Versus Delayed Natural Cycle Frozen Embryo Transfers". Retrieved via AI Analytics 2026-07-18 from https://api.ai-analytics.org/clinical/NCT05215119. Licensed CC0.

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