# Prophylactic Administration of Natural Progesterone in the Prevention of Preterm Delivery in Twin Pregnancies

> **NCT01031017** · PHASE4 · COMPLETED · sponsor: **University of Sao Paulo** · enrollment: 390 (actual)

## Conditions studied

- Preterm Delivery

## Interventions

- **DRUG:** progesterone
- **DRUG:** placebo

## Key facts

- **NCT ID:** NCT01031017
- **Lead sponsor:** University of Sao Paulo
- **Sponsor class:** OTHER
- **Phase:** PHASE4
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2007-06
- **Primary completion:** 2014-05
- **Final completion:** 2014-06
- **Target enrollment:** 390 (ACTUAL)
- **Last updated:** 2014-12-04


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01031017

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01031017, "Prophylactic Administration of Natural Progesterone in the Prevention of Preterm Delivery in Twin Pregnancies". Retrieved via AI Analytics 2026-06-02 from https://api.ai-analytics.org/clinical/NCT01031017. Licensed CC0.

---

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