Title

Oral Progesterone for Prevention of Preterm Birth
Prevention of Recurrent Preterm Birth With Micronized Progesterone
  • Phase

    Phase 3
  • Study Type

    Interventional
  • Intervention/Treatment

    progesterone ...
  • Study Participants

    36
To evaluate whether daily oral micronized progesterone is effective in preventing recurrent spontaneous preterm birth (RSPB) and whether micronized progesterone use increases maternal serum progesterone levels.
To evaluate whether 400 mg daily oral micronized progesterone from 16 to 34 weeks' is effective in preventing recurrent spontaneous preterm birth (RSPB) and whether micronized progesterone use increases maternal serum progesterone levels.
Study Started
Nov 30
2006
Primary Completion
Jan 31
2009
Study Completion
Jan 31
2009
Results Posted
Jul 21
2011
Estimate
Last Update
Feb 18
2019

Drug oral micronized progesterone

oral micronized progesterone = 400 mg oral micronized progesterone nightly from 16 to 34 weeks

  • Other names: Prometrium(TM)

Drug Identical Placebo tablet

Identical Placebo tablet = placebo taking nightly from 16 to 34 weeks

  • Other names: Placebo

Progesterone Group Experimental

Oral Micronized Progesterone

Placebo Placebo Comparator

Identical Placebo Tablet

Criteria

Inclusion Criteria:

pregnant women less than 20 weeks' gestation who had at least one prior spontaneous preterm birth of a liveborn baby between 20 & 0/7 weeks' and 36 & 6/7 weeks' gestation.

Exclusion Criteria:

multiple gestations, the presence of major fetal anomalies, progesterone use in the current pregnancy (ongoing or past), the presence of a cervical cerclage, and the presence of a placenta previa.

Summary

Progesterone Group

Placebo

All Events

Event Type Organ System Event Term

Rate of Recurrent Preterm Birth

Spontaneous preterm birth prior to 37 weeks' gestation. Indicated preterm deliveries (for maternal or fetal reasons) were excluded.

Progesterone Group

5.0
participants

Placebo

8.0
participants

Secondary Outcomes

Serum progesterone levels

Progesterone Group

122.6
pg/mL (Mean)
Standard Deviation: 61.8

Placebo

90.1
pg/mL (Mean)
Standard Deviation: 38.7

Total

36
Participants

Age, Continuous

28
years (Mean)
Standard Deviation: 4

Age, Categorical

Region of Enrollment

Sex: Female, Male

Overall Study

Progesterone Group

Placebo

Drop/Withdrawal Reasons

Progesterone Group

Placebo