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Scientists launch study to uncover secrets of the first two weeks of pregnancy

NCT ID NCT07358026

Knowledge-focused Sponsor: MELISA Institute Genomics & Proteomics Research SpA Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study follows healthy women who are trying to get pregnant, as well as women who are not, to collect samples and learn about the molecular signals between mother and embryo during the first two weeks after fertilization. Researchers will compare cycles that lead to a full-term birth, early pregnancy loss, or no pregnancy. The goal is to better understand early pregnancy, not to test a treatment.

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

Study facts

What this study's own registry entry says, in plain language.

Participants

About 223 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jul 2017

Expected to finish

Dec 2027

An estimate. End dates often move.

Lead sponsor

A company

The lead sponsor is a pharmaceutical, biotech, or medical-device company.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Women visiting gynaecologists, and midwives in private practices, public hospitals, and Family Health Centres (CESFAMs) in the Biobio region of Chile.

Ages

18 to 40 years

Sex

Female participants only

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion criteria: * being between 18 and 40 years of age * not being pregnant * normal colposcopy * body mass index (BMI) between 18 and 29 * regular menstrual cycles (21-35 days) * absence of chronic diseases (hypertension, diabetes mellitus, cancer, depression, personality disorder, thyroid pathology, polycystic ovary syndrome, or hyperprolactinemia). * If seeking pregnancy, they were included if their partners were males between 18 and 40 years old, without pathologies (diabetes mellitus, depression, personality disorder, or cancer), were not taking chronic medication, without erectile disorders, BMI between 18 and 29.9, moderate alcohol use, and with no recreational drug use. Exclusion criteria: * pregnant women * history of alcoholism * infertility treatment * endometriosis * pelvic inflammatory disease * pelvic surgery * allergy to latex or silicone * If seeking pregnancy, they were excluded if their partners were working in contact with pesticides, or with history of erectile dysfunction, or history of mumps in adulthood, or with chronic diseases, or with psychological problems.

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Conditions

The condition(s) this trial relates to.

Abortion, Spontaneous

As listed by the trial registrant

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

Childbirth Early pregnancy Early pregnancy loss Healthy Pregnancy

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Clínica Sanatorio Alemán

    RECRUITING

    Chiguayante, Chile

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