Who can join
Studies for younger adults
These studies accept adults from 21 or younger and set an upper age limit of 45 or below, so they are aimed at younger adults. Being in the age range does not mean you qualify; screening decides.
674 recruiting studiesSource: ClinicalTrials.gov, refreshed October 26, 2026How we list studies
Studies
- RecruitingPhase 2
A Study to Investigate Mibavademab in Adult Women With Functional Hypothalamic Amenorrhea
Regeneron Pharmaceuticals
- Location
- Phoenix, AZ + 9 other US sites
- Eligibility basics
- Ages 18–40 · Women only
- RecruitingPhase 3
A Research Study on How Well Cagrilintide and CagriSema Work in Children and Adolescents With Excess Body Weight
Novo Nordisk A/S
- Location
- Escondido, CA + 26 other US sites
- Eligibility basics
- Ages 8–18
- RecruitingPhase 1
A Study of SGT-212 Gene Therapy in Friedreich's Ataxia
Solid Biosciences Inc.
- Location
- Los Angeles, CA + 2 other US sites
- Eligibility basics
- Ages 18–40
- RecruitingPhase 2
Study of MRM-3379 in Male Participants With Fragile X Syndrome (BLOOM)
Mirum Pharmaceuticals, Inc.
- Location
- Phoenix, AZ + 13 other US sites
- Eligibility basics
- Ages 13–45 · Men only
- Recruiting
SAINT in Postpartum Depression (PPD)
Magnus Medical
- Location
- Worcester, MA + 3 other US sites
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingPhase 3
A Study of Nipocalimab in Pregnancies at Risk for Severe Hemolytic Disease of the Fetus and Newborn (HDFN)
Janssen Research & Development, LLC
- Location
- La Jolla, CA + 19 other US sites
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingPhase 3
A Study of Nipocalimab or Intravenous Immunoglobulin (IVIG) in Pregnancies At Risk of Fetal and Neonatal Alloimmune Thrombocytopenia (FNAIT)
Janssen Research & Development, LLC
- Location
- Birmingham, AL + 11 other US sites
- Eligibility basics
- Ages 18–45 · Women only
- RecruitingPhase 3
Human Menopausal Gonadotropin Research in Infertility Assessing Cumulative Live Birth With Frozen Embryo Transfer.
Granata Bio Corporation
- Location
- Encino, CA + 14 other US sites
- Eligibility basics
- Ages 18–42 · Women only
- RecruitingPhase 2
A Study of Belumosudil in Children With Chronic Graft Versus Host Disease (schoolROCK)
Sanofi
- Location
- Los Angeles, CA + 6 other US sites
- Eligibility basics
- Ages 1–18
- RecruitingPhase 3
Study of ALK-001 on the Progression of Stargardt Disease
Alkeus Pharmaceuticals, Inc.
- Location
- Phoenix, AZ + 11 other US sites
- Eligibility basics
- Ages 8–45
- RecruitingPhase 2
HMBeacon: A Phase 2 Study to Evaluate ALN-6400 in Adult and Adolescent Female Patients With VWD and HMB
Alnylam Pharmaceuticals
- Location
- Orange, CA + 5 other US sites
- Eligibility basics
- Ages 16–45 · Women only
- RecruitingPhase 3
Brexanolone Lifting Outcomes Of Moms
Lipocine Inc.
- Location
- Tucson, AZ + 15 other US sites
- Eligibility basics
- Ages 15–45 · Women only
- RecruitingPhase 1/Phase 2
CNP-103 in Adolescent and Adult Subjects Ages 12-35 With Recently Diagnosed (Within 6 Months) Stage 3 Type 1 Diabetes (T1D)
COUR Pharmaceutical Development Company, Inc.
- Location
- Tucson, AZ + 44 other US sites
- Eligibility basics
- Ages 12–35
- RecruitingPhase 3
Study to Assess the Efficacy, Pharmacokinetics, Safety and Tolerability of Iptacopan in Pediatric Patients With Primary IgAN
Novartis Pharmaceuticals
- Location
- Madera, CA + 4 other US sites
- Eligibility basics
- Ages 2–18
- RecruitingPhase 1/Phase 2
Study of Intrathecal ELP-02 for Charcot-Marie-Tooth Disease Type 4J (CMT4J)
Elpida Therapeutics SPC
- Location
- Palo Alto, CA
- Eligibility basics
- Ages 3–20
- Recruiting
Hormone-free Antral Retrieval for Viable Embryo Storage & Transfer
Kevin Doody
- Location
- Bedford, TX
- Eligibility basics
- Ages 18–35 · Women only
- RecruitingPhase 2
Safety and Efficacy Study of Intracystic TARA-002 for the Treatment of Lymphatic Malformations in Participants 6 Months to Less Than 18 Years of Age
Protara Therapeutics
- Location
- Birmingham, AL + 8 other US sites
- Eligibility basics
- Ages 6 mo–18
- RecruitingPhase 1/Phase 2
Study to Evaluate Safety, Efficacy and Immunogenicity of Acne mRNA Vaccine in Adults With Moderate to Severe Acne
Sanofi Pasteur, a Sanofi Company
- Location
- Scottsdale, AZ + 78 other US sites
- Eligibility basics
- Ages 18–45
- RecruitingPhase 3
An Open-label Study to Assess Safety and Efficacy of SZC in Paediatric Patients With Hyperkalaemia
AstraZeneca
- Location
- Birmingham, AL + 3 other US sites
- Eligibility basics
- Ages 0 mo–18
- Recruiting
This Study Aims to Evaluate Whether Milamend's Product Could Improve Hormone Balance in Women Who Suffer From Self-reported PCOS Symptoms.
Mila Mend Inc.
- Location
- Los Angeles, CA
- Eligibility basics
- Ages 18–40 · Women only
- Recruiting
Pro-2-Cool Pivotal Trial II
TecTraum Inc.
- Location
- Akron, OH
- Eligibility basics
- Ages 13–21
- Recruiting
A Just-in-time Adaptive Intervention for Suicide Safety Planning in Adolescents
Ksana Health
- Location
- Pittsburgh, PA + 1 other US site
- Eligibility basics
- Ages 13–24
- RecruitingPhase 3
Study to Assess the Pharmacokinetics, Safety, and Tolerability of Iptacopan in Pediatric PNH Patients
Novartis Pharmaceuticals
- Location
- Atlanta, GA + 3 other US sites
- Eligibility basics
- Ages 2–18
- RecruitingPhase 3
A Clinical Trial of Elsunersen in Pediatric SCN2A-DEE to Assess Efficacy and Safety
Praxis Precision Medicines
- Location
- San Diego, CA + 5 other US sites
- Eligibility basics
- Ages 0 mo–18
Questions
If I fit this group, will I qualify?
Not necessarily. Age and sex limits are only the first filter. Each study has its own inclusion and exclusion criteria, and the research team decides at screening.
Where do these age and sex limits come from?
From the eligibility section of each study’s official ClinicalTrials.gov record. We don’t infer eligibility from anything else.