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ClinicalTrials.gov public records Last synced Oct 1, 2026, 9:43 AM EDT

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Showing 49–72 of 75 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: soy isoflavones Clear all
Terminated Phase 2 Interventional

Genistein in Treating Patients With Localized Prostate Cancer Who Are Planning to Undergo Radical Prostatectomy

NCT00058266
View directory record Official record
Conditions
Prostate Cancer
Interventions
genistein, conventional surgery
Dietary Supplement · Procedure
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older · Male only
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2009
U.S. locations
5
States / cities
Chicago, Illinois • Evanston, Illinois • Harvey, Illinois + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 19, 2012 · Synced Oct 1, 2026, 9:43 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

The Effect of Concord Grape Polyphenol-soy Protein Isolate Complex (GP-SPI) on Gut Microbiota

NCT04018066
View directory record Official record
Conditions
Mechanisms, Defense
Interventions
GP-SPI
Dietary Supplement
Lead sponsor
Rutgers, The State University of New Jersey
Other
Eligibility
18 Years to 35 Years
Enrollment
34 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019
U.S. locations
1
States / cities
New Brunswick, New Jersey
Source: ClinicalTrials.gov public record
Updated Jun 18, 2026 · Synced Oct 1, 2026, 9:43 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Women's Isoflavone Soy Health (WISH) Trial

NCT00118846
View directory record Official record
Conditions
Atherosclerosis
Interventions
25 gm soy protein supplement, Placebo
Dietary Supplement · Other
Lead sponsor
University of Southern California
Other
Eligibility
30 Years and older · Female only
Enrollment
350 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2009
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated May 6, 2023 · Synced Oct 1, 2026, 9:43 AM EDT
Terminated Not applicable Interventional

Soy Modulation of Immune Activation, LDL- Levels, and Lowering Inflammation by Pretzel Isoflavone Dietary Intervention

NCT02818283
View directory record Official record
Conditions
Human Immunodeficiency Virus (HIV) Infection, Hypercholesterolemia
Interventions
Soy Pretzel, Wheat Pretzel
Dietary Supplement · Other
Lead sponsor
Ohio State University
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2023
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 6, 2023 · Synced Oct 1, 2026, 9:43 AM EDT
Completed Phase 2 Interventional

Soy Supplements in Treating Patients Undergoing Surgery for Localized Prostate Cancer

NCT00345813
View directory record Official record
Conditions
Prostate Cancer
Interventions
soy isoflavones, soy protein isolate, placebo
Dietary Supplement · Other
Lead sponsor
Wake Forest University Health Sciences
Other
Eligibility
18 Years to 120 Years · Male only
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2006
U.S. locations
1
States / cities
Winston-Salem, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 10, 2018 · Synced Oct 1, 2026, 9:43 AM EDT
Terminated Phase 2 Interventional Results available

Soy Derivatives for Control of Hot Flashes in Men on Androgen Deprivation Therapy

NCT00594620
View directory record Official record
Conditions
Prostate Cancer
Interventions
Flav-ein capsules, Placebo
Dietary Supplement · Drug
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years and older · Male only
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2010
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Feb 14, 2022 · Synced Oct 1, 2026, 9:43 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Soy Isoflavones and Breast Cancer Risk Reduction

NCT00204490
View directory record Official record
Conditions
Breast Cancer
Interventions
isoflavones, carbohydrate
Dietary Supplement
Lead sponsor
The University of Texas Medical Branch, Galveston
Other
Eligibility
30 Years to 42 Years · Female only
Enrollment
197 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2004 – 2023
U.S. locations
1
States / cities
Galveston, Texas
Source: ClinicalTrials.gov public record
Updated May 16, 2024 · Synced Oct 1, 2026, 9:43 AM EDT
Terminated Phase 2 Interventional Results available

Study of Genistein in Pediatric Oncology Patients (UVA-Gen001)

NCT02624388
View directory record Official record
Conditions
Lymphoma, Childhood Lymphoma, Solid Tumor, Childhood Solid Tumor, Neuroblastoma, Ewing Sarcoma, Hodgkin Lymphoma, Non-Hodgkin Lymphoma, Rhabdomyosarcoma, Soft Tissue Sarcoma, Medulloblastoma, Germ Cell Tumor, Wilms Tumor, Brain Neoplasms, Medulloblastoma, Childhood, Neuroectodermal Tumors, Primitive
Interventions
Genistein, Placebo
Drug
Lead sponsor
University of Virginia
Other
Eligibility
1 Year to 21 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
1
States / cities
Charlottesville, Virginia
Source: ClinicalTrials.gov public record
Updated May 6, 2024 · Synced Oct 1, 2026, 9:43 AM EDT
Not listed Not applicable Interventional

Dietary Soy Isoflavones for the Prevention of Cancer

NCT00003100
View directory record Official record
Conditions
Unspecified Adult Solid Tumor, Protocol Specific
Interventions
soy isoflavones
Dietary Supplement
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
18 Years and older
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 1996
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 19, 2013 · Synced Oct 1, 2026, 9:43 AM EDT
Terminated Not applicable Interventional

Isoflavones in Treating Women Who Have Breast Cancer and Are Planning to Undergo Mastectomy or Lumpectomy

NCT00036686
View directory record Official record
Conditions
Breast Cancer
Interventions
Soy protein isolate, Placebo
Dietary Supplement · Other
Lead sponsor
H. Lee Moffitt Cancer Center and Research Institute
Other
Eligibility
18 Years and older · Female only
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2003
U.S. locations
7
States / cities
Phoenix, Arizona • Tampa, Florida • Savannah, Georgia + 3 more
Source: ClinicalTrials.gov public record
Updated Sep 24, 2012 · Synced Oct 1, 2026, 9:43 AM EDT
Completed Phase 2 Interventional Results available

Soy Isoflavones in Preventing Head and Neck Cancer Recurrence in Patients With Stage I-IV Head and Neck Cancer Undergoing Surgery

NCT02007200
View directory record Official record
Conditions
Recurrent Hypopharyngeal Squamous Cell Carcinoma, Recurrent Laryngeal Squamous Cell Carcinoma, Recurrent Laryngeal Verrucous Carcinoma, Recurrent Lip and Oral Cavity Squamous Cell Carcinoma, Recurrent Oral Cavity Verrucous Carcinoma, Recurrent Oropharyngeal Squamous Cell Carcinoma, Stage I Hypopharyngeal Squamous Cell Carcinoma, Stage I Laryngeal Squamous Cell Carcinoma, Stage I Laryngeal Verrucous Carcinoma, Stage I Lip and Oral Cavity Squamous Cell Carcinoma, Stage I Oral Cavity Verrucous Carcinoma, Stage I Oropharyngeal Squamous Cell Carcinoma, Stage II Hypopharyngeal Squamous Cell Carcinoma, Stage II Laryngeal Squamous Cell Carcinoma, Stage II Laryngeal Verrucous Carcinoma, Stage II Lip and Oral Cavity Squamous Cell Carcinoma, Stage II Oral Cavity Verrucous Carcinoma, Stage II Oropharyngeal Squamous Cell Carcinoma, Stage III Hypopharyngeal Squamous Cell Carcinoma, Stage III Laryngeal Squamous Cell Carcinoma, Stage III Laryngeal Verrucous Carcinoma, Stage III Lip and Oral Cavity Squamous Cell Carcinoma, Stage III Oral Cavity Verrucous Carcinoma, Stage III Oropharyngeal Squamous Cell Carcinoma, Stage IV Hypopharyngeal Squamous Cell Carcinoma, Stage IVA Laryngeal Squamous Cell Carcinoma, Stage IVA Laryngeal Verrucous Carcinoma, Stage IVA Lip and Oral Cavity Squamous Cell Carcinoma, Stage IVA Oral Cavity Verrucous Carcinoma, Stage IVA Oropharyngeal Squamous Cell Carcinoma, Tongue Carcinoma
Interventions
Laboratory Biomarker Analysis, Soy Isoflavones, Survey Administration
Other · Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
19 Years to 79 Years
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2015
U.S. locations
3
States / cities
Atlanta, Georgia • Ann Arbor, Michigan • Detroit, Michigan
Source: ClinicalTrials.gov public record
Updated Oct 24, 2016 · Synced Oct 1, 2026, 9:43 AM EDT
Completed Phase 4 Interventional Results available

The Study of Soy Isoflavones in Asthma

NCT01052116
View directory record Official record
Conditions
Asthma
Interventions
Soy isoflavone supplement, Placebo
Drug
Lead sponsor
American Lung Association Asthma Clinical Research Centers
Other
Eligibility
12 Years and older
Enrollment
386 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2012
U.S. locations
18
States / cities
Tucson, Arizona • San Diego, California • Denver, Colorado + 15 more
Source: ClinicalTrials.gov public record
Updated Jan 14, 2016 · Synced Oct 1, 2026, 9:43 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Prandial Metabolic Phenotyping in Sarcopenic Older Adults Comparing Plant Based and Whey Based Protein

NCT06628349
View directory record Official record
Conditions
Protein Metabolism
Interventions
Whey Protein Isolate 90%, Soy Protein Isolate (90% Protein), Organic Pea Protein Isolate, Placebo (Water)
Dietary Supplement
Lead sponsor
Texas A&M University
Other
Eligibility
50 Years to 95 Years
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2024 – 2026
U.S. locations
1
States / cities
College Station, Texas
Source: ClinicalTrials.gov public record
Updated Nov 25, 2025 · Synced Oct 1, 2026, 9:43 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Effect of Soy Isoflavones on Bone Mineral Density and Physical Performance Indices

NCT00661856
View directory record Official record
Conditions
Osteoporosis
Interventions
Soy protein
Dietary Supplement
Lead sponsor
Creighton University
Other
Eligibility
55 Years to 72 Years · Female only
Enrollment
203 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2004
U.S. locations
1
States / cities
Omaha, Nebraska
Source: ClinicalTrials.gov public record
Updated Apr 21, 2008 · Synced Oct 1, 2026, 9:43 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Genistein in Treatment of Metastatic Colorectal Cancer

NCT01985763
View directory record Official record
Conditions
Colon Cancer, Rectal Cancer, Colorectal Cancer
Interventions
Genistein
Drug
Lead sponsor
Sofya Pintova
Other
Eligibility
18 Years and older
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated May 10, 2019 · Synced Oct 1, 2026, 9:43 AM EDT
Withdrawn Not applicable Interventional

Effect of Soy Intake on Cardiovascular Disease Biomarkers in Subclinical Hypothyroid Participants

NCT02024906
View directory record Official record
Conditions
Cardiovascular Disease, Subclinical Hypothyroid
Interventions
soy protein isolate (SPI), milk protein isolate (MPI)
Dietary Supplement
Lead sponsor
Jill Hamilton-Reeves, PhD RD LD
Other
Eligibility
25 Years to 70 Years
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Sep 23, 2015 · Synced Oct 1, 2026, 9:43 AM EDT
Completed Not applicable Interventional Results available

Dietary Soy Isoflavones In Chronic Pancreatitis

NCT02577640
View directory record Official record
Conditions
Chronic Pancreatitis
Interventions
Soy bread
Dietary Supplement
Lead sponsor
Ohio State University
Other
Eligibility
18 Years and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Nov 12, 2021 · Synced Oct 1, 2026, 9:43 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers

Soy Isoflavone Tablets: Effects on Sleep, Quality of Life, Symptoms and Cognitive Function in Menopausal Women

NCT01401946
View directory record Official record
Conditions
Hot Flashes
Interventions
soy isoflavones, Placebo
Drug
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
Female only
Enrollment
88 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2000 – 2001
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 26, 2011 · Synced Oct 1, 2026, 9:43 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Soy, Bone and Health in College Females

NCT00244478
View directory record Official record
Conditions
Osteoporosis, Obesity
Interventions
Soy Protein Dietary Supplement, Placebo
Dietary Supplement
Lead sponsor
University of Georgia
Other
Eligibility
18 Years to 19 Years · Female only
Enrollment
120 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2006
U.S. locations
1
States / cities
Athens, Georgia
Source: ClinicalTrials.gov public record
Updated Sep 25, 2015 · Synced Oct 1, 2026, 9:43 AM EDT
Completed Phase 3 Interventional

Diet and PSA Levels in Patients With Prostate Cancer

NCT00003367
View directory record Official record
Conditions
Prostate Cancer
Interventions
green tea, soy protein isolate, vitamin E
Dietary Supplement
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older · Male only
Enrollment
154 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1998 – 2002
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 26, 2013 · Synced Oct 1, 2026, 9:43 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Tomato Juice for Health Study

NCT03783013
View directory record Official record
Conditions
Healthy Volunteers
Interventions
High Lycopene Tomato Juice With Soy Germ Extract, Low Lycopene Tomato Juice
Other
Lead sponsor
USDA Beltsville Human Nutrition Research Center
Federal
Eligibility
30 Years to 75 Years
Enrollment
19 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Beltsville, Maryland
Source: ClinicalTrials.gov public record
Updated Jun 10, 2022 · Synced Oct 1, 2026, 9:43 AM EDT
Completed Phase 2 Interventional Accepts healthy volunteers Results available

Soy Protein and Breast Cancer Risk Reduction

NCT00204477
View directory record Official record
Conditions
Breast Cancer
Interventions
soy milk, cow's milk
Dietary Supplement
Lead sponsor
The University of Texas Medical Branch, Galveston
Other
Eligibility
30 Years to 40 Years · Female only
Enrollment
321 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2002 – 2023
U.S. locations
1
States / cities
Galveston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 23, 2024 · Synced Oct 1, 2026, 9:43 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Soy Nuts and Cardiovascular Risk in Postmenopausal Women

NCT01740076
View directory record Official record
Conditions
Postmenopausal Women
Interventions
soy nuts
Other
Lead sponsor
Beth Israel Deaconess Medical Center
Other
Eligibility
21 Years and older · Female only
Enrollment
84 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2001 – 2012
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 22, 2025 · Synced Oct 1, 2026, 9:43 AM EDT
Completed Phase 3 Interventional Accepts healthy volunteers

Effect of Dietary Soy on Estrogens in Breast Fluid, Blood, and Urine Samples From Healthy Women

NCT00513916
View directory record Official record
Conditions
Breast Cancer, Healthy, no Evidence of Disease
Interventions
soy isoflavones
Dietary Supplement
Lead sponsor
University of Hawaii Cancer Research Center
Other
Eligibility
30 Years to 45 Years · Female only
Enrollment
100 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2012
U.S. locations
1
States / cities
Honolulu, Hawaii
Source: ClinicalTrials.gov public record
Updated Dec 19, 2013 · Synced Oct 1, 2026, 9:43 AM EDT