# Cycle Control Assessment of a Combined Oral Contraceptive Containing Estetrol and a Progestin P1 or P2

> **NCT01221831** · PHASE2 · COMPLETED · sponsor: **Estetra** · enrollment: 396 (actual)

## Conditions studied

- Contraception

## Interventions

- **DRUG:** estetrol, P 1 and placebo tablets
- **DRUG:** estetrol, P2 and placebo tablets
- **DRUG:** Estradiol valerate, dienogest and placebo tablets

## Key facts

- **NCT ID:** NCT01221831
- **Lead sponsor:** Estetra
- **Sponsor class:** INDUSTRY
- **Phase:** PHASE2
- **Study type:** INTERVENTIONAL
- **Status:** COMPLETED
- **Start date:** 2010-09
- **Primary completion:** 2011-09
- **Final completion:** 2011-09
- **Target enrollment:** 396 (ACTUAL)
- **Last updated:** 2012-09-14


## Primary source

ClinicalTrials.gov registry: https://clinicaltrials.gov/study/NCT01221831

## Citation

> US National Library of Medicine, ClinicalTrials.gov registration NCT01221831, "Cycle Control Assessment of a Combined Oral Contraceptive Containing Estetrol and a Progestin P1 or P2". Retrieved via AI Analytics 2026-06-24 from https://api.ai-analytics.org/clinical/NCT01221831. Licensed CC0.

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