Investigating genetic and microbiome factors in recurrent pregnancy losses

Evaluation of Predisposing Factors for Idiopathic Recurrent Pregnancy Losses: a Study Using a Genomic and Microbiota Approach

Observational Hospital de Clinicas de Porto Alegre · NCT06604338

This study is trying to find out if certain genes and bacteria in the uterus are linked to women who have had multiple pregnancy losses.

Quick facts

Study typeObservational
Enrollment20 (estimated)
SexFemale
SponsorHospital de Clinicas de Porto Alegre Academic / other
Locations1 site (Porto Alegre, Rio Grande do Sul)
Trial IDNCT06604338 on ClinicalTrials.gov

What this trial studies

This observational study aims to explore the genetic and microbiome factors associated with recurrent pregnancy losses (RPL). It will analyze the exomes of women who have experienced RPL and compare them with population genomic databases to identify potential genetic predispositions. Additionally, the study will characterize the uterine microbiota of these women to understand its role in RPL. By combining genomic and microbiomic approaches, the study seeks to shed light on the unexplained cases of RPL.

Who should consider this trial

Good fit: Ideal candidates include women with a history of at least two spontaneous pregnancy losses without a determined cause.

Not a fit: Patients with fewer than two spontaneous pregnancy losses or those with a known cause for their pregnancy losses may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could lead to better understanding and potential interventions for women experiencing recurrent pregnancy losses.

How similar studies have performed: While there have been studies investigating genetic factors in RPL, the combination of genomic and microbiome analysis in this context is relatively novel.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* RPL group: history of at least two spontaneous pregnancy losses, regardless of whether they have living children, and whose etiology for the pregnancy losses was not determined by the care team\'s protocols;
* Control group: at least two full-term pregnancies and no history of difficulty getting pregnant, pregnancy loss or other infertility factors.

Exclusion Criteria:

* RPL group: less than two spontaneous pregnancy losses and those with a known cause for repeated pregnancy losses;
* Control group: N/A

Where this trial is running

Porto Alegre, Rio Grande do Sul

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Recurrent Pregnancy LossMiscarriageRecurrent miscarriageAbortionRecurrent abortionGenetic susceptibilityMicrobiome
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.