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Showing 1–16 of 16 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Kallmann's Syndrome Clear all
Terminated Phase 1 Interventional

Effect of Varying Testosterone Levels on Insulin Sensitivity in Men With Idiopathic Hypogonadotropic Hypogonadism (IHH)

NCT03118479
View directory record Official record
Conditions
Hypogonadotropic Hypogonadism, Kallmann Syndrome
Interventions
Anastrozole Pill, Testosterone, Placebo Oral Tablet
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older · Male only
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 17, 2017 · Synced Jul 22, 2026, 1:33 AM EDT
Completed No phase listed Observational

Investigation of the Genetic Causes of Kallmann Syndrome and Reproductive Disorders

NCT00494169
View directory record Official record
Conditions
Hypogonadotropic Hypogonadism, Kallmann Syndrome, Puberty, Delayed, Puberty, Precocious, GnRH Deficiency
Interventions
Not listed
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
Not listed
Enrollment
4,042 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2022
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 29, 2022 · Synced Jul 22, 2026, 1:33 AM EDT
Not listed Not applicable Interventional

Baselines in Reproductive Disorders

NCT00456274
View directory record Official record
Conditions
Amenorrhea, Hypogonadotropic Hypogonadism, Kallmann's Syndrome
Interventions
Frequent baseline blood sampling
Procedure
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
16 Years to 45 Years · Female only
Enrollment
180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2020
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 3, 2014 · Synced Jul 22, 2026, 1:33 AM EDT
Completed No phase listed Observational

The Molecular Basis of Inherited Reproductive Disorders

NCT05971836
View directory record Official record
Conditions
Hypogonadotropic Hypogonadism, Reproductive Disorder, Kallmann Syndrome, Delayed Puberty
Interventions
Not listed
Lead sponsor
Stephanie B. Seminara, MD
Other
Eligibility
1 Year and older
Enrollment
854 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 12, 2026 · Synced Jul 22, 2026, 1:33 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Varying Testosterone Levels on Insulin Sensitivity in Normal and IHH Men

NCT00470990
View directory record Official record
Conditions
Hypogonadism
Interventions
GnRH antagonist (Acyline)
Drug
Lead sponsor
National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)
NIH
Eligibility
18 Years to 75 Years · Male only
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2008
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 19, 2011 · Synced Jul 22, 2026, 1:33 AM EDT
Active, not recruiting No phase listed Observational

Patient and Healthcare Professional Views on Genetic/Genomic Information and Testing

NCT04733274
View directory record Official record
Conditions
Hypogonadism, Hypogonadotropic, Kallmann Syndrome
Interventions
Not listed
Lead sponsor
Boston College
Other
Eligibility
18 Years to 70 Years
Enrollment
227 participants
Timeline
2018 – 2025
U.S. locations
2
States / cities
Boston, Massachusetts • Chestnut Hill, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 3, 2025 · Synced Jul 22, 2026, 1:33 AM EDT
Terminated Phase 2 Interventional Results available

Follicle Stimulating Hormone (FSH) to Improve Testicular Development in Men With Hypogonadism

NCT00064987
View directory record Official record
Conditions
Hypogonadism, Kallmann Syndrome
Interventions
Testicular biopsy, gonadotropin releasing hormone (GnRH), follicle stimulating hormone (FSH)
Procedure · Drug
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
18 Years and older · Male only
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2001 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 6, 2017 · Synced Jul 22, 2026, 1:33 AM EDT
Completed Phase 1 Interventional

Studying the Effects of 7 Days of Gonadotropin Releasing Hormone (GnRH) Treatment in Men With Hypogonadism

NCT00493961
View directory record Official record
Conditions
Kallmann Syndrome, Idiopathic Hypogonadotropic Hypogonadism, GnRH Deficiency
Interventions
gonadotropin releasing hormone (GnRH)
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years to 65 Years · Male only
Enrollment
27 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2009
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jun 30, 2022 · Synced Jul 22, 2026, 1:33 AM EDT
Not listed Phase 2 Interventional

Pulsatile GnRH in Anovulatory Infertility

NCT00383656
View directory record Official record
Conditions
Hypogonadotropic Hypogonadism, Amenorrhea, Kallmann's Syndrome
Interventions
GnRH, Pump
Drug · Device
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
16 Years to 45 Years · Female only
Enrollment
270 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1989 – 2020
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 11, 2017 · Synced Jul 22, 2026, 1:33 AM EDT
Completed No phase listed Observational

Hormonal Regulation of Puberty and Fertility

NCT01511588
View directory record Official record
Conditions
Endocrine Disease, Infertility, Hypogonadism, Amenorrhea, Adolescents
Interventions
Not listed
Lead sponsor
National Institute of Environmental Health Sciences (NIEHS)
NIH
Eligibility
14 Years to 100 Years
Enrollment
111 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2012
U.S. locations
2
States / cities
Bethesda, Maryland • Research Triangle Park, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 1, 2026 · Synced Jul 22, 2026, 1:33 AM EDT
Terminated No phase listed Observational

Psychological Outcomes in Isolated GnRH Deficiency

NCT02356172
View directory record Official record
Conditions
Hypogonadism
Interventions
Not listed
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
18 Years to 200 Years
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 17, 2019 · Synced Jul 22, 2026, 1:33 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Kisspeptin Administration in the Adult

NCT00914823
View directory record Official record
Conditions
Hypogonadotropic Hypogonadism, Kallmann Syndrome, GnRH Deficiency, PCOS, Polycystic Ovarian Syndrome, Hyperprolactinemia
Interventions
kisspeptin 112-121, GnRH
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
256 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 30, 2024 · Synced Jul 22, 2026, 1:33 AM EDT
Completed Phase 1 Interventional

Examination of Idiopathic Hypogonadotropic Hypogonadism (IHH)and Kallmann Syndrome (KS)

NCT00392756
View directory record Official record
Conditions
Kallmann Syndrome, Hypogonadotropic Hypogonadism, GnRH Deficiency
Interventions
gonadotropin releasing hormone (GnRH)
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
16 Years and older
Enrollment
624 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1989 – 2019
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 10, 2022 · Synced Jul 22, 2026, 1:33 AM EDT
Completed Phase 1 Interventional

Kisspeptin in the Evaluation of Delayed Puberty

NCT01438034
View directory record Official record
Conditions
Delayed Puberty, Kallmann Syndrome, Hypogonadotropic Hypogonadism, GnRH Deficiency
Interventions
kisspeptin 112-121, GnRH
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
12 Years to 17 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2021
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 18, 2023 · Synced Jul 22, 2026, 1:33 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Investigating the Regulation of Reproductive Hormones in Adult Men

NCT00392457
View directory record Official record
Conditions
Kallmann Syndrome, Hypogonadism, Gonadal Disorder
Interventions
ketoconazole, gonadotropin releasing hormone (GnRH)
Drug
Lead sponsor
Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)
NIH
Eligibility
18 Years to 50 Years · Male only
Enrollment
175 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
1995 – 2007
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 15, 2015 · Synced Jul 22, 2026, 1:33 AM EDT
Recruiting No phase listed Observational

Inherited Reproductive Disorders

NCT01500447
View directory record Official record
Conditions
Genetic Disorder, Infertility, Hypogonadism, Amenorrhea
Interventions
Not listed
Lead sponsor
National Institute of Environmental Health Sciences (NIEHS)
NIH
Eligibility
6 Weeks to 120 Years
Enrollment
850 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2012
U.S. locations
2
States / cities
Bethesda, Maryland • Research Triangle Park, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Jul 22, 2026, 1:33 AM EDT