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Showing 1–24 of 26 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Atypical Lobular Breast Hyperplasia Clear all
Recruiting Phase 2 Interventional Accepts healthy volunteers

Low Dose Tamoxifen With or Without Omega-3 Fatty Acids for Breast Cancer Risk Reduction

NCT06195306
View directory record Official record
Conditions
Breast Atypical Hyperplasia, Breast Carcinoma, Breast Ductal Carcinoma In Situ, Breast Lobular Carcinoma In Situ
Interventions
Biospecimen Collection, Mammography, Omega-3-Acid Ethyl Esters, Questionnaire Administration, Random Periareolar Fine-Needle Aspiration, Tamoxifen
Procedure · Drug · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
45 Years to 74 Years · Female only
Enrollment
66 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2028
U.S. locations
3
States / cities
Kansas City, Kansas • Ann Arbor, Michigan • Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated May 19, 2026 · Synced Jul 22, 2026, 4:38 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

Making Informed Choices on Incorporating Chemoprevention Into Care (MiCHOICE)

NCT04496739
View directory record Official record
Conditions
Atypical Hyperplasia of the Breast, Lobular Breast Carcinoma In Situ, Pleomorphic Lobular Breast Carcinoma In Situ
Interventions
Cancer Educational Materials, Decision Aid, Interview, Questionnaire Administration
Behavioral · Other
Lead sponsor
SWOG Cancer Research Network
Network
Eligibility
Not listed
Enrollment
412 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2028
U.S. locations
96
States / cities
Antioch, California • Costa Mesa, California • Duarte, California + 67 more
Source: ClinicalTrials.gov public record
Updated Apr 6, 2026 · Synced Jul 22, 2026, 4:38 AM EDT
Terminated No phase listed Observational

Adding a Genetic Risk Evaluation to Standard Breast Cancer Risk Assessment for African American and Hispanic Women

NCT05755269
View directory record Official record
Conditions
Breast Atypical Ductal Hyperplasia, Breast Atypical Lobular Hyperplasia, Breast Carcinoma, Breast Lobular Carcinoma In Situ
Interventions
Biospecimen Collection, Genotyping, Survey Administration
Procedure · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
30 Years to 75 Years · Female only
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Apr 30, 2026 · Synced Jul 22, 2026, 4:38 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

FHIR-Enhanced RealRisks to Improve Accuracy of Breast Cancer Risk Assessments

NCT05810025
View directory record Official record
Conditions
Breast Cancer
Interventions
RealRisks
Behavioral
Lead sponsor
Columbia University
Other
Eligibility
35 Years to 74 Years · Female only
Enrollment
70 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2023 – 2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 10, 2026 · Synced Jul 22, 2026, 4:38 AM EDT
Recruiting Phase 2 Interventional

Finding the Best Tamoxifen Dose for Breast Cancer Risk Reduction in Premenopausal Women, RENAISSANCE Trial

NCT06184750
View directory record Official record
Conditions
Breast Atypical Ductal Hyperplasia, Breast Atypical Lobular Hyperplasia, Breast Carcinoma, Breast Ductal Carcinoma In Situ, Breast Lobular Carcinoma In Situ, Estrogen Receptor-Positive Breast Carcinoma
Interventions
Biopsy Procedure, Biospecimen Collection, Mammography, Questionnaire Administration, Tamoxifen
Procedure · Other · Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years to 55 Years · Female only
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
11
States / cities
Tucson, Arizona • Chicago, Illinois • Kansas City, Kansas + 6 more
Source: ClinicalTrials.gov public record
Updated Jul 19, 2026 · Synced Jul 22, 2026, 4:38 AM EDT
Completed No phase listed Observational

Upstaging of ALH/LCIS Found on Core Biopsy Based on Subsequent Excisional Biopsy

NCT00146536
View directory record Official record
Conditions
Breast Neoplasms
Interventions
Not listed
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
20 Years and older · Female only
Enrollment
78 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2012
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 30, 2017 · Synced Jul 22, 2026, 4:38 AM EDT
Completed No phase listed Observational

Atypical Lesions of the Breast: Close Observation Versus Excision (ALCOVE)

NCT01925586
View directory record Official record
Conditions
Atypical Ductal Hyperplasia (ADH) of the Breast
Interventions
Not listed
Lead sponsor
Yale University
Other
Eligibility
40 Years and older · Female only
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Jan 27, 2019 · Synced Jul 22, 2026, 4:38 AM EDT
Terminated Phase 2 Interventional

Oral Tamoxifen vs. TamGel vs. Control in Women With Atypical Hyperplasia, Lobular Carcinoma In Situ, or Increased Breast Cancer Risk

NCT04570956
View directory record Official record
Conditions
Breast Atypical Hyperplasia, Breast Lobular Carcinoma in Situ, Breast Atypical Lobular Hyperplasia, Breast Carcinoma
Interventions
Tamoxifen, Topical 4-OHT( 4-hydroxytamoxifen)gel 4 mg/each breast/day, Placebo, Questionnaire Administration
Drug · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years to 80 Years · Female only
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
3
States / cities
Evanston, Illinois • Rochester, Minnesota • Camden, New Jersey
Source: ClinicalTrials.gov public record
Updated Jan 22, 2026 · Synced Jul 22, 2026, 4:38 AM EDT
Completed Not applicable Interventional

Pilot Study of Curcumin for Women With Obesity and High Risk for Breast Cancer

NCT01975363
View directory record Official record
Conditions
Atypical Ductal Breast Hyperplasia, BRCA1 Gene Mutation, BRCA2 Gene Mutation, Ductal Breast Carcinoma in Situ, Lobular Breast Carcinoma in Situ
Interventions
curcumin, Biomarker analysis, Assessment of Dietary Intake, Daily Log
Dietary Supplement · Other
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
19 Years and older · Female only
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2016
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 29, 2019 · Synced Jul 22, 2026, 4:38 AM EDT
Active, not recruiting Phase 3 Interventional Results available

Metformin Hydrochloride in Preventing Breast Cancer in Patients With Atypical Hyperplasia or In Situ Breast Cancer

NCT01905046
View directory record Official record
Conditions
Atypical Ductal Breast Hyperplasia, BRCA1 Mutation Carrier, BRCA2 Mutation Carrier, Ductal Breast Carcinoma in Situ, Lobular Breast Carcinoma in Situ
Interventions
metformin hydrochloride, placebo
Drug · Other
Lead sponsor
Alliance for Clinical Trials in Oncology
Other
Eligibility
25 Years to 55 Years · Female only
Enrollment
86 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2026
U.S. locations
27
States / cities
Duarte, California • Los Angeles, California • South Pasadena, California + 18 more
Source: ClinicalTrials.gov public record
Updated Apr 27, 2026 · Synced Jul 22, 2026, 4:38 AM EDT
Terminated Not applicable Interventional

Flaxseed in Preventing Breast Cancer in Premenopausal Women at Risk of Developing Breast Cancer

NCT00794989
View directory record Official record
Conditions
Breast Cancer, Precancerous Condition
Interventions
Ground Flaxseed, No Intervention
Dietary Supplement · Other
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
21 Years to 50 Years · Female only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2011
U.S. locations
2
States / cities
Chicago, Illinois • Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Jun 2, 2016 · Synced Jul 22, 2026, 4:38 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Molecular Breast Imaging in Women With Atypia and LCIS

NCT00620087
View directory record Official record
Conditions
Atypical Lobular Hyperplasia, Atypical Ductal Hyperplasia, Lobular Carcinoma in Situ
Interventions
Molecular Breast Imaging, Screening Mammography
Procedure
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older · Female only
Enrollment
66 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2003 – 2015
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 9, 2016 · Synced Jul 22, 2026, 4:38 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Breast Cancer Chemoprevention by SOM230, an IGF-I Action Inhibitor: A Proof of Principle Trial

NCT01372644
View directory record Official record
Conditions
Atypical Ductal Breast Hyperplasia, Lobular Carcinoma in Situ (LCIS), Atypical Lobular Hyperplasia (ALH) of Breast
Interventions
SOM 230 / Pasireotide
Drug
Lead sponsor
NYU Langone Health
Other
Eligibility
21 Years and older · Female only
Enrollment
15 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2007 – 2013
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Dec 4, 2016 · Synced Jul 22, 2026, 4:38 AM EDT
Completed Phase 2 Interventional Results available

Broccoli Sprout Extract in Treating Women Who Have Had a Mammogram and Breast Biopsy

NCT00843167
View directory record Official record
Conditions
Breast Cancer, Precancerous Condition
Interventions
broccoli sprout extract, placebo
Dietary Supplement · Other
Lead sponsor
OHSU Knight Cancer Institute
Other
Eligibility
21 Years to 120 Years · Female only
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2013
U.S. locations
1
States / cities
Portland, Oregon
Source: ClinicalTrials.gov public record
Updated Apr 26, 2017 · Synced Jul 22, 2026, 4:38 AM EDT
Completed No phase listed Observational

X-Ray Mammography Standard of Care Protocol

NCT01052740
View directory record Official record
Conditions
Breast Cancer, Invasive Carcinoma, In Situ Carcinoma, Fibrocystic Changes, Atypical Ductal Hyperplasia
Interventions
Not listed
Lead sponsor
National Institutes of Health Clinical Center (CC)
NIH
Eligibility
18 Years to 100 Years · Female only
Enrollment
108 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2011
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Jul 1, 2017 · Synced Jul 22, 2026, 4:38 AM EDT
Terminated Not applicable Interventional Results available

Role of Contrast Enhanced Spectral Mammography to Predict Upgrade Rates of Biopsy Proven Atypical Ductal Hyperplasia

NCT03505372
View directory record Official record
Conditions
Atypical Ductal Hyperplasia
Interventions
Contrast enhanced mammography
Device
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
30 Years and older · Female only
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2019
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 10, 2020 · Synced Jul 22, 2026, 4:38 AM EDT
Completed Not applicable Interventional

Group-Based Lifestyle Intervention in Measuring Biomarker Levels in Participants at High Risk for Breast Cancer

NCT01874184
View directory record Official record
Conditions
Atypical Ductal Breast Hyperplasia, Atypical Lobular Breast Hyperplasia, BRCA1 Mutation Carrier, BRCA2 Mutation Carrier, Ductal Breast Carcinoma in Situ, Lobular Breast Carcinoma in Situ
Interventions
counseling intervention, behavioral dietary intervention, exercise intervention, questionnaire administration, laboratory biomarker analysis
Other · Behavioral
Lead sponsor
University of Washington
Other
Eligibility
35 Years to 65 Years · Female only
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2013
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jan 19, 2016 · Synced Jul 22, 2026, 4:38 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Bexarotene in Preventing Breast Cancer in Patients at High Risk for Breast Cancer

NCT03323658
View directory record Official record
Conditions
Breast Atypical Ductal Hyperplasia, Breast Atypical Lobular Hyperplasia, Breast Ductal Carcinoma In Situ, Breast Lobular Carcinoma In Situ, Invasive Breast Carcinoma
Interventions
Bexarotene, Questionnaire Administration
Drug · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older · Female only
Enrollment
24 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2018 – 2022
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 9, 2023 · Synced Jul 22, 2026, 4:38 AM EDT
Recruiting No phase listed Observational

Impact of Dietary Inflammatory Potential on Breast Cancer Risk

NCT05178498
View directory record Official record
Conditions
Breast Atypical Ductal Hyperplasia, Breast Atypical Lobular Hyperplasia, Breast Carcinoma, Breast Lobular Carcinoma In Situ, Breast Sclerosing Adenosis
Interventions
Follow-Up, Physical Examination, Questionnaire Administration
Procedure · Other
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
960 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2035
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Jun 11, 2026 · Synced Jul 22, 2026, 4:38 AM EDT
Not yet recruiting Phase 2 Interventional

Randomized Double-Blind Phase II Trial of Baby Exemestane Versus Baby Tamoxifen in Post-Menopausal Women at High Risk for Breast Cancer

NCT07499999
View directory record Official record
Conditions
Breast Cancer, Ductal Carcinoma, Estrogen-receptor-positive Breast Cancer, Atypical Lobular Hyperplasia, BRCA2 Mutation, CHEK2 Gene Mutation, Ataxia Telangiectasia Mutated Gene Mutation
Interventions
Exemestane, Tamoxifen
Drug
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
Female only
Enrollment
140 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 29, 2026 · Synced Jul 22, 2026, 4:38 AM EDT
Completed Phase 2 Interventional

Ruxolitinib for Premalignant Breast Disease

NCT02928978
View directory record Official record
Conditions
Ductal Carcinoma In Situ, Atypical Lobular Hyperplasia, Atypical Ductal Hyperplasia, Lobular Carcinoma In Situ
Interventions
Ruxolitinib, Placebo (for Ruxolitinib)
Drug
Lead sponsor
Julie Nangia
Other
Eligibility
18 Years and older
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
8
States / cities
Birmingham, Alabama • Indianapolis, Indiana • The Bronx, New York + 3 more
Source: ClinicalTrials.gov public record
Updated Apr 12, 2026 · Synced Jul 22, 2026, 4:38 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Phase I Prevention Study of Atorvastatin in Women at Increased Risk for Breast Cancer

NCT00637481
View directory record Official record
Conditions
Atypical Ductal Breast Hyperplasia, Breast Cancer, Ductal Breast Carcinoma in Situ, Lobular Breast Carcinoma in Situ
Interventions
atorvastatin calcium, laboratory biomarker analysis
Drug · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years to 72 Years · Female only
Enrollment
66 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2008 – 2012
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Dec 28, 2016 · Synced Jul 22, 2026, 4:38 AM EDT
Completed No phase listed Observational

Breast Cancer Registry for Participants With Breast Cancer or Characteristics of Hereditary Breast Cancer

NCT00666731
View directory record Official record
Conditions
Breast Cancer, Precancerous Condition
Interventions
medical chart review, questionnaire administration, study of socioeconomic and demographic variables, Excess human biological tissue, quality-of-life assessment
Other · Procedure
Lead sponsor
University of Nebraska
Other
Eligibility
19 Years to 120 Years
Enrollment
4,945 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2016
U.S. locations
65
States / cities
Colorado Springs, Colorado • Denver, Colorado • Lakewood, Colorado + 46 more
Source: ClinicalTrials.gov public record
Updated Oct 9, 2023 · Synced Jul 22, 2026, 4:38 AM EDT
Recruiting Phase 2 Interventional

Acolbifene Versus Low Dose Tamoxifen for the Prevention of Breast Cancer in Premenopausal Women at High Risk for Development of Breast Cancer

NCT05941520
View directory record Official record
Conditions
Breast Atypical Hyperplasia, Breast Carcinoma, Breast Ductal Carcinoma In Situ, Breast Lobular Carcinoma In Situ
Interventions
Acolbifene Hydrochloride, Biospecimen Collection, Mammography, Questionnaire Administration, Random Periareolar Fine-Needle Aspiration, Tamoxifen
Drug · Procedure · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
35 Years and older · Female only
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
4
States / cities
Duarte, California • Chicago, Illinois • Kansas City, Kansas + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 6, 2026 · Synced Jul 22, 2026, 4:38 AM EDT