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Vitamin d levels may influence IVF success, UAE study investigates

NCT ID NCT07681115

Knowledge-focused Sponsor: Fakih IVF Fertility Center Source: ClinicalTrials.gov ↗

What the study statuses mean

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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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Jul 02, 2026 · Last updated Jul 16, 2026 · Updated 2 times

Summary

This study looks at whether a woman's vitamin D level on the day of a frozen embryo transfer affects her chances of getting pregnant and having a baby. Researchers in the UAE will follow 126 women aged 18–40 undergoing frozen embryo transfer. The goal is to see if higher vitamin D levels are linked to better pregnancy outcomes, which could help guide future fertility care.

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 a clear link is found, it could lead to routine vitamin D screening and supplementation before frozen embryo transfer to improve pregnancy outcomes.
What could go wrong
This is an observational study, so it cannot prove cause and effect. Other factors may influence results, and findings may not apply to all populations.

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 126 people

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

Started

Jun 2026

Expected to finish

Aug 2027

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

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 undergoing FET cycle who do not suffer from conditions affecting implantation and have got vitamin D levels tested 3 - 6 months before FET cycle.

Ages

18 to 40 years

Sex

Female participants only

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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: * Women undergoing frozen embryo transfer (FET) at Fakih IVF. * Age between 18 and 40 years. * Body mass index (BMI) between 18 and 40 kg/m². * Patients who had serum vitamin D levels assessed within three months prior to FET * Supplementation with Vitamin D if deficient \< 30 ng/mL (75 nmol/L). Exclusion: * Age below 18 years or above 40 years. * BMI below 18 kg/m² or above 40 kg/m². * Patients who did not have vitamin D levels measured within three months prior to FET. * Patients who were found to have low vitamin D levels but did not receive supplementation. * Patients with recurrent implantation failure (RIF). * Patients with known uterine factors affecting implantation (e.g., congenital uterine anomalies, intrauterine adhesions, submucosal fibroids). * Patients with significant medical comorbidities that may affect pregnancy outcomes.

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Conditions

The condition(s) this trial relates to.

vitamin D deficiency

As listed by the trial registrant

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

In vitro fertilization and embryo transfer Vitamin D insufficiency

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

  • Fakih IVF Fertility Centre LLC

    RECRUITING

    Abu Dhabi, United Arab Emirates

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