Kathleen Fenn, MD
Assistant Professor of Medicine (Medical Oncology)Cards
About
Research
Overview
Dr. Fenn is a member of the T32 Cancer Biology Training Program (T32-CA009503) that seeks to identify and recruit individuals with outstanding potential and prepare them for highly productive careers in cancer research. She recently presented at the San Antonio Breast Cancer Symposium on the tumor immune microenvironment in early stage HR-positive/HER2-positive breast cancer.
Clinical Care
Overview
Kathleen Fenn, MD, is a medical oncologist who specializes in caring for people with breast cancer. In particular, she focuses on early-stage breast cancers that are hormone receptor (HR)-positive and human epidermal growth factor receptor 2 (HER2)-positive, where tumor cells depend on hormones or produce certain proteins that encourage growth.
As an assistant professor of medicine (medical oncology) at Yale School of Medicine, Dr. Fenn’s research explores how the body’s immune system interacts with tumors. She has shared insights into what’s known as the tumor immune microenvironment at national conferences.
Dr. Fenn completed her medical training at Yale School of Medicine. She then pursued her internship, residency, and fellowship in internal medicine, hematology, and oncology at Columbia University Irving Medical Center.
Clinical Specialties
Fact Sheets
Gestational Trophoblastic Tumors
Learn More on Yale MedicineHormonal Therapy for Cancer
Learn More on Yale MedicineBreast Cancer
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Yale Medicine News
News & Links
News
- April 01, 2025
Comprehensive Breast Cancer Care at Smilow Cancer Hospital in Trumbull, Fairfield, and at Bridgeport Hospital
- March 20, 2025
Smilow Cancer Hospital Gynecologic Oncology Expertise in Fairfield County
- October 24, 2024
Smilow Shares Breast Cancer Awareness: Empowered through Knowledge, Smilow at Trumbull
- March 02, 2023
Gynecologic Oncology Specialty Team at Smilow Cancer Hospital Care Center in Trumbull
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Contacts
Locations
Patient Care Locations
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Events
- EveryoneGabriel Cartagena, PhD - Kathleen Fenn, MD - Monica G Valero, MD