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Breast Cancer clinical trials in Waterbury, CT

6 studies for Breast Cancer are looking for participants at sites in and around Waterbury (within about 30 miles). Open a study to see who can join and how to contact the study team.

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The CDK4/6 Inhibitor Dosing Knowledge (CDK) Study

RecruitingPhase 3
  • Smilow Cancer Hospital Care Center - Waterbury, Waterbury
  • Smilow Cancer Hospital Care Center - Torrington, Torrington · 17 mi away
Ages 60 and older · All sexes · Updated Sep 25, 2026 · NCT06377852

Evaluating the Addition of Adjuvant Chemotherapy to Ovarian Function Suppression Plus Endocrine Therapy in Premenopausal Patients With pN0-1, ER-Positive/HER2-Negative Breast Cancer and an Oncotype Recurrence Score Less Than or Equal to 25

RecruitingPhase 3
  • Smilow Cancer Hospital-Waterbury Care Center, Waterbury
  • Midstate Medical Center, Meriden · 13 mi away
  • Smilow Cancer Hospital-Torrington Care Center, Torrington · 17 mi away
Ages 18 to 60 · Women · Updated Sep 2, 2026 · NCT05879926

ATEMPT 2.0: Adjuvant T-DM1 vs TH

RecruitingPhase 2
  • Smilow Cancer Hospital Care center at Waterbury, Waterbury
  • Smilow Cancer Hospital Care center at Torrington, Torrington · 17 mi away
Ages 18 and older · All sexes · Updated Aug 19, 2026 · NCT04893109

De-Escalation of Breast Radiation Trial for Hormone Sensitive, HER-2 Negative, Oncotype Recurrence Score Less Than or Equal to 18 Breast Cancer (DEBRA)

RecruitingPhase 3
  • Smilow Cancer Hospital-Waterbury Care Center, Waterbury
  • Smilow Cancer Hospital-Torrington Care Center, Torrington · 17 mi away
Ages 50 to 70 · All sexes · Updated Apr 23, 2026 · NCT04852887

MammaPrint, BluePrint, and Full-genome Data Linked With Clinical Data to Evaluate New Gene EXpression Profiles

RecruitingObservational study
  • St. Mary's Hospital, Waterbury
Ages 18 and older · All sexes · Updated Aug 20, 2025 · NCT03053193

About Breast Cancer

Breast cancer is a cancer that starts in the breast tissue, when cells change and grow out of control. These extra cells can form a mass called a tumor.

More about Breast Cancer on MedlinePlus

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Other studies in Waterbury

From ClinicalTrials.gov, data retrieved Oct 6, 2026. Each study sets its own eligibility; the study team decides who can join.