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Could IVF raise heart risks? new study aims to find out

NCT ID NCT07173569

Knowledge-focused Sponsor: University of Manchester Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This study will check the heart and blood vessel health of 120 women, some planning pregnancy naturally and some after IVF for infertility. Researchers want to see if infertility or IVF treatments are linked to higher heart disease risk. The goal is to learn how to run a larger study that could improve long-term health for women with infertility.

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 study could point toward ways to reduce heart disease risk in women with infertility or who have used IVF.
What could go wrong
This is a small, early feasibility study, not a treatment trial. It may not find clear links or lead to immediate changes in care.

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 120 people

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

Expected to start

May 2026

An estimate. Start dates often move.

Expected to finish

Oct 2028

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

There are two cohorts for this study: pre-conception and post-pregnancy. For the pre-conception cohort of the study, two groups of participants will be recruited: * Group 1: individuals with a history of infertility who have been accepted to undergo IVF treatment at the Department of Reproductive Medicine, MFT. * Group 2: individuals with no history of infertility, attending for a pre-conception appointment at MFT. For the post-pregnancy cohort of the study, individuals who participated in the START (St Mary's After Reproductive Technology) clinic study (20/NE/0220) who consented to receive future research invitations, will be invited to an research appointment at 1-5 years post-birth.

Ages

16 to 45 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: * In pre-conception cohort: * Aged between 16 and 45 * Able to provide informed consent * Either: 1) Those with a history of infertility (failure to conceive after at least 1 year of unprotected intercourse/3-6 cycles of Intra-Uterine Insemination (IUI) or diagnosed cause of infertility) and accepted for IVF at The Department of Reproductive Medicine, MFT or, 2) attending for a pre-conception appointment at MFT * Nulliparous (no previous pregnancies beyond 20 weeks) * No pre-existing heart disease, hypertensive disease, vascular disease or diabetes * In post-pregnancy cohort * Aged between 16 and 45 * Able to provide informed consent * Participant of START clinic study (achieved pregnancy via a) IVF with or without ICSI treatment, b) spontaneous conception without medical intervention within 12 months, or c) spontaneous conception following ovulation induction for delay in spontaneous conception \>12 months or confirmed anovulation) Exclusion Criteria: \- In all participants: * Prisoners * Born male at birth * Language barrier not overcome by telephone or video interpretation services * Pregnant at time of study visit Pre-conception participants only: • Accepted for IVF for non-infertility reasons i.e. egg donation, egg collection, egg banking, gestational surrogacy

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Conditions

The condition(s) this trial relates to.

infertility disorder

As listed by the trial registrant

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

Assisted reproductive technology Cardiovascular health In vitro fertilisation Infertility Maternal cardiometabolic health Metabolic health

How to take part

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

  1. 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 ↗

  2. 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.

More trials for these conditions

Other studies related to the condition(s) this trial covers.