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CompletedNCT02430233Updated Feb 28, 2023

Vaginal Progesterone for the Prolongation of Pregnancy After Arrested Pre-term Labor

A Phase 4 interventional study of micronized progesterone 400 mg (Utrogestan) in Preterm Labor, sponsored by HaEmek Medical Center, Israel. Completed at 3 sites in Israel. Open to female participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2023-02-28.

Sponsored by HaEmek Medical Center, Israel · Phase 4, Interventional, and Treatment

Phase
Phase 4
Study type
Interventional
Enrollment
129
Allocation
Randomized
Ages
18 Years and older
Sex
Female
01

Study summary

Patients diagnosed with arrested pre-term labor following tocolytics at 24-34 gestational weeks will be randomly allocated to receive either vaginal micronized progesterone 400 mg/day or no treatment.

Read the detailed description

Since progesterone derivatives are useful in preventing preterm labor in cases of risk factors or previous preterm labor, we hypothesize that they will also show efficacy in pregnancy prolongation in women whose preterm labor was arrested following tocolytic treatment.

Patients diagnosed with arrested pre-term labor following tocolytics at 24-34 gestational weeks will be randomly allocated to receive either vaginal micronized progesterone 400 mg/day or no treatment.

This study has the potential to find a treatment to prevent preterm labor and thus to reduce neonatal morbidity and mortality.

02

Conditions studied

  • Preterm Labor
03

In context

Obstetric Labor, Premature

255 studies on the registry are indexed under Obstetric Labor, Premature; 38 are open to participants now.

This study's enrollment of 129 is above the median of 110 across 155 interventional studies indexed under Obstetric Labor, Premature.

Browse Obstetric Labor, Premature studies →

Lead sponsor

HaEmek Medical Center, Israel is the lead sponsor of 228 studies on the registry; 12 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
Female
Accepts healthy volunteers
No

Inclusion criteria

  1. 18 years of age
  2. Tocolytic treatment between 24+0 and 34+0 weeks
  3. Patient's consent to participate in this study
  4. 24 hours after tocolytic initiation and up to 3 days after finishing the tocolytic treatment
  5. Arrest of preterm labor

Exclusion criteria

Exclusion Criteria

  1. Contraindication to ongoing pregnancy including:

    1. Suspected amnionitis during testing for eligibility- evidence of active infection including temperature ≥ 38.0°C and uterine tenderness, foul-smelling vaginal discharge, maternal tachycardia of 120 beats per minute or greater, or sustained fetal tachycardia of 160 beats per minute or greater
    2. Evidence of significant placental abruption (contractions and significant bleeding from placental origin)
    3. Intrauterine fetal death diagnosed at the time of admission
  2. Major fetal malformation
  3. Known maternal allergy to progesterone
  4. Current use of progesterone at the time of admission
  5. Epilepsy
  6. Breast cancer
  7. PPROM (preterm premature rupture of membranes) during testing for eligibility
  8. Age below 18 years
  9. Known active liver disease (elevated liver enzymes at twice the upper normal limit according to medical history or blood test that were taking doring standard medical care)
  10. History of deep vein thrombosis
  11. Major active psychiatric disorders (major affective disorders and psychotic disorders)
  12. Uncontrolled chronic hypertension
  13. Heart failure
  14. Chronic renal failure
  15. Pre-gestational diabetes with known target organ damage
  16. History of spontaneous preterm delivery
  17. Previous tocolytic treatment during the current pregnancy
05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
129 participants (actual)

Study arms

  • Experimental
    micronized progesterone 400 mg

    participants receive vaginal micronized progesterone (Utrogestan- 200mg×2 PV(per vagina) per day)

    Drug: micronized progesterone 400 mg (Utrogestan)

  • No intervention
    No treatment

    No treatment

Interventions

  • Drugmicronized progesterone 400 mg (Utrogestan)

    participants receive vaginal micronized progesterone (Utrogestan- 200mg×2 PV(per vagina) per day)

    Also known as: Utrogestan- 200mg×2 PV(per vagina) per day

06

What researchers measure

Primary outcomes

  1. The mean number of days from enrollment to delivery

    Time frame: Up to 18 weeks

  2. The rate of preterm spontaneous delivery

    defined as spontaneous labor or preterm delivery following induction/cesarean section due to preterm premature rupture of membranes prior to 37 weeks of gestation

    Time frame: Up to 13 weeks

Secondary outcomes

  1. Number of days from recruitment to repeated preterm labor episode or preterm premature rupture of membranes, up to 37 weeks of gestation

    Time frame: Up to 13 weeks

  2. Pregnancy prolongation beyond one week

    Time frame: Up to 18 weeks

  3. Need for repeated acute tocolysis

    Time frame: Up to 13 weeks

  4. Number of hospitalizations and length of stay until 36.6 gestational weeks

    Time frame: Up to 13 weeks

  5. The rate of preterm spontaneous labor (defined as spontaneous labor or preterm premature rupture of membranes prior to 37 weeks of gestation)

    Time frame: Up to 13 weeks

  6. Admission to the NICU (neonatal intensive care unit)

    Time frame: From delivery and up to 28 days

  7. Length of NICU stay

    Time frame: From delivery and up to 3 months

  8. Length of neonate hospital stay

    Time frame: From delivery and up to 3 months

  9. Fetal/neonatal death

    Time frame: Around delivery

  10. Birth weight and the rate of small for gestational age neonates

    Time frame: Around delivery

  11. The rate of neonatal complications

    including transient tachypnea, RDS (respiratory distress syndrome), bronchopulmonary dysplasia, ventilatory support, supplemental oxygen, IVH (intraventricular hemorrhage), NEC (necrotizing enterocolitis), PDA (patent ductus arteriosus), retinopathy, neonatal sepsis, and congenital abnormalities not previously identified (specifically genital abnormalities).

    Time frame: From delivery and up to 3 months

  12. The rate of chorioamnionitis and endometritis

    Time frame: around delivery and up to 1 week post-partum

  13. Adverse medication reactions

    Time frame: Up to 13 weeks

  14. Postpartum hemorrhage

    Time frame: From delivery and up to 1 week post-partum

  15. Revision of uterine and cervix and reasons for the procedure

    Time frame: During the 48 hours from delivery

  16. Urinary tract or vulvovaginal infection until 36.6 weeks

    Time frame: Up to 13 weeks

07

Study locations

3 sites
  • Poriya Medical Center
    Tiberias, North 15208, Israel
  • Emek Medical center
    Afula, Please Select 18100, Israel
  • Assuta Ashdod medical center
    Ashdod, Israel
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 28, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT02430233
Lead sponsor
HaEmek Medical Center, Israel
Responsible party
Zohar Nachum (Principal Investigator, HaEmek Medical Center, Israel) — Principal investigator
First posted
Apr 30, 2015
Start date
Dec 19, 2018
Primary completion
Feb 27, 2023
Completion
Feb 27, 2023
Last update
Feb 28, 2023

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Feb 2023. You cannot join it, but the record below documents what was studied.

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