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Could your vaginal bacteria decide if IVF works? scientists launch huge study.

NCT ID NCT06643065

Recruiting now Knowledge-focused Sponsor: Fundación IVI Source: ClinicalTrials.gov ↗

First seen Jun 27, 2026 · Last updated Jul 01, 2026 · Updated 2 times

Summary

This study will test 1,573 women undergoing IVF to see if the types of bacteria in the vagina are linked to pregnancy success. Researchers will collect samples before embryo transfer and analyze the bacterial balance. The goal is to learn whether an imbalance might cause pregnancy failure and if future testing could help improve outcomes.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

What this could lead to
If successful, this could lead to routine vaginal microbiome testing and treatments to improve IVF success rates.
What could go wrong
This is an observational study, not a treatment trial. It may find no clear link, or the results may not apply to all fertility patients.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

VAGINAL MICROBIOME

Contacts and locations

Locations

  • Ginefiv Barcelona

    RECRUITING

    Barcelona, 08015, Spain

  • Ginefiv Madrid

    RECRUITING

    Madrid, 28043, Spain

  • Ginemed Sevilla

    RECRUITING

    Seville, 41010, Spain

  • IVI Barcelona

    RECRUITING

    Barcelona, 08029, Spain

  • IVI Bilbao

    RECRUITING

    Bilbao, 48940, Spain

  • IVI Madrid

    RECRUITING

    Madrid, 28023, Spain

  • IVI Málaga

    RECRUITING

    Málaga, 29006, Spain

  • IVI Valencia

    RECRUITING

    Valencia, 46015, Spain

  • IVI Vigo

    RECRUITING

    Vigo, 36203, Spain

  • IVI Zaragoza

    RECRUITING

    Zaragoza, 50018, Spain

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