New sperm sorting technique could let parents pick Baby's sex
NCT ID NCT05500573
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests a method to sort sperm by gender (X or Y chromosome) using a density gradient. The goal is to help couples undergoing IVF or insemination have a baby of a desired sex, for medical or personal reasons. About 2000 couples will take part, and researchers will check if the sorted sperm leads to embryos and babies of the chosen gender.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- Sperm sorting procedure
- What this could lead to
- If successful, this could offer a reliable way for couples to choose the sex of their child during fertility treatment.
- What could go wrong
- This is an early-stage study with no phase, and the method may not reliably produce the desired gender. Risks include potential failure of the sorting technique or lower fertilization rates.
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
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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
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About 2,000 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Nov 2013
- Expected to finish
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Dec 2029
An estimate. End dates often move.
- Lead sponsor
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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
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18 to 89 years
- Sex
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Anyone
- Healthy volunteers
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Accepted
You do not need to have the condition being studied to take part.
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Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria: * Couples undergoing infertility treatment with IVF or insemination seeking gender specific offspring for medical and non medical reasons Exclusion Criteria: * Severe male factor
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
1 site. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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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
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Center for Reproductive Medicine- Weill Cornell Medicine
RECRUITINGNew York, New York, 10021, United States
More trials for these conditions
Other studies related to the condition(s) this trial covers.
- The hidden handshake that decides whether an embryo implants
- Do infertility treatments leave a metabolic mark on children?
- Could a Woman's biological clock also predict her Heart's future?
- Sperm sorting showdown: can a microchip pick the best sperm for pregnancy?
- Could your genes predict when fertility fades?
- Can virtual reality goggles take the sting out of a fertility procedure?