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Can quicker thawing save more frozen eggs? new study investigates

NCT ID NCT07105891

Knowledge-focused Sponsor: IRCCS San Raffaele 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
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 This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 looks at whether faster ways to thaw frozen eggs (rapid and ultra-rapid) work better than the standard method. Researchers will check how many eggs survive and how healthy they look after thawing. The study uses eggs donated for research from 399 women aged 20-39.

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.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 399 people

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

Started

Sep 2025

Expected to finish

Oct 2025

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.

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: * Vitrified oocytes from the Centro Scienze della Natalità, IRCCS San Raffaele Hospital * Patients who explicitly consented to the disposal of their stored gametes and authorized their use for research purposes through the informed consent process * Oocytes cryopreserved using the vitrification technique * Patients age 20-39 yo Exclusion Criteria: * All oocytes cryopreserved using the slow freezing technique * Oocytes from patients older than 40 years

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As listed by the trial registrant

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

Oocyte cryopreservation

Contacts and locations

Locations

  • IRCCS San Raffaele Hospital

    Milan, Lombardy, 20132, Italy

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