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Infertility clinical trials recruiting in the U.S.

42 studies for Infertility are recruiting participants at sites across the United States.

Infertility is when a woman can't get pregnant after a year or keeps having miscarriages. Read about infertility, its causes, and treatments.

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Recently updated studies

Fertilo In Vitro Research Study and Trial

RecruitingPhase 3Healthy volunteers welcome
Ages 18 to 35 ยท Women ยท Updated Sep 29, 2026 ยท NCT06858111

Human Menopausal Gonadotropin Research in Infertility Assessing Cumulative Live Birth With Frozen Embryo Transfer.

RecruitingPhase 3
Ages 18 to 42 ยท Women ยท Updated Sep 24, 2026 ยท NCT07216742

Biorepository in Participants Who Undergo OTC for Gonadotoxic Therapy

RecruitingObservational study
Ages 4 to 35 ยท Women ยท Updated Sep 16, 2026 ยท NCT05440617

Sperm Preparation Prior to Intrauterine Insemination Study

Recruiting
Ages 18 and older ยท All sexes ยท Updated Sep 15, 2026 ยท NCT05693220

Hormone-free Antral Retrieval for Viable Embryo Storage & Transfer

Recruiting
Ages 18 to 35 ยท Women ยท Updated Sep 9, 2026 ยท NCT07801105

Non-Euploid Embryo Transfer (NEET) Registry

RecruitingObservational study
All ages ยท Women ยท Updated Aug 14, 2026 ยท NCT07036536

The Hysterosalpingogram (HSG) Experience And Tubal Spasm (HEAT) Study

RecruitingEarly phase 1
Ages 18 to 45 ยท Women ยท Updated Jul 30, 2026 ยท NCT07226310

Inherited Reproductive Disorders

RecruitingObservational study
6 Weeks โ€“ 120 Years ยท All sexes ยท Updated Jul 28, 2026 ยท NCT01500447

Convergent Mechanisms Underlying Reprometabolic Syndrome in Women

RecruitingPhase 2Healthy volunteers welcome
Ages 18 to 38 ยท Women ยท Updated Jul 21, 2026 ยท NCT06686537

GnRH for Luteal Support in IVF/ICSI/FET Cycles

RecruitingPhase 4
Ages 18 to 40 ยท Women ยท Updated Jul 9, 2026 ยท NCT02357654

Uterine Transplant in Absolute Uterine Infertility (AUIF)

RecruitingPhase 2/3
Ages 18 to 40 ยท Women ยท Updated Jul 6, 2026 ยท NCT02741102

IntelliWell: An AI-Assisted Imaging Platform for Detection and Location of Ultra-Rare Testicular Sperm in Surgical Specimens

Recruiting
Ages 18 and older ยท Men ยท Updated Jun 22, 2026 ยท NCT07074015

Fertility Preservation Using Tamoxifen and Letrozole in Estrogen Sensitive Tumors Trial

RecruitingPhase 3
Ages 18 to 50 ยท Women ยท Updated Jun 4, 2026 ยท NCT03011684

Quantifying Uterine Elastography in Menstruating Women

RecruitingObservational studyHealthy volunteers welcome
Ages 18 to 45 ยท Women ยท Updated Jun 3, 2026 ยท NCT06816381

The EPIC Study: Exploring Paternal Age and the Influence on Blastocyst Culture

Recruiting
Ages 18 to 41 ยท Women ยท Updated Jun 3, 2026 ยท NCT06629766

Investigating Micro-Manipulation Procedures for Assisted Hatching Timing

Recruiting
Ages 18 to 42 ยท Women ยท Updated Jun 3, 2026 ยท NCT06377917

Discarded Materials Study

RecruitingObservational studyHealthy volunteers welcome
Ages 18 to 65 ยท All sexes ยท Updated Jun 3, 2026 ยท NCT01219335

Male Infertility and Assisted Reproductive Technologies Research Biobank

RecruitingObservational study
All ages ยท Men ยท Updated Jun 2, 2026 ยท NCT06880302

Sex Selection of Human Spermatozoa

RecruitingHealthy volunteers welcome
Ages 18 to 89 ยท All sexes ยท Updated May 29, 2026 ยท NCT05500573

Uterine Transplant for Women With Absolute Uterine Factor Infertility (AUFI)

Recruiting
Ages 20 to 65 ยท Women ยท Updated Apr 29, 2026 ยท NCT05263076

Testicular Tissue Cryopreservation for Fertility Preservation

Recruiting
All ages ยท Men ยท Updated Apr 22, 2026 ยท NCT02972801

Frame Support Study

Recruiting
Ages 22 to 44 ยท Women ยท Updated Apr 15, 2026 ยท NCT07083700

Cleavage-stage Versus Blastocyst-stage Embryo Transfer in IVF Patients With Few Embryos

RecruitingPhase 3
Ages 18 to 44 ยท Women ยท Updated Apr 2, 2026 ยท NCT06746129

HELIOS Advanced: Human Oocyte Illumination to Enhance Development

RecruitingHealthy volunteers welcome
Ages 18 to 48 ยท Women ยท Updated Mar 25, 2026 ยท NCT07425080

Identifying Genome Variants in Non-Obstructive Azoospermia (NOA) or Primary Ovarian Insufficiency (POI)

RecruitingObservational study
Ages 18 to 100 ยท All sexes ยท Updated Mar 16, 2026 ยท NCT07357701

From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.