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Microscope image in shades of blue

Daring to
defy cancer

Pfizer’s relentless pursuit of cancer breakthroughs

The people behind the breakthroughs

Meet the minds turning the tide in cancer research

Portrait photo of Dr. Kathleen, who leads the group of research scientists who are advancing antibody-drug conjugates (ADCs) into clinical trials

Dr. Kathleen Keegan

Head of Post-CAN Research

Kathleen’s childhood dreams of being a doctor transformed when she fell in love with research. She now leads the group of research scientists who are advancing antibody-drug conjugates (ADCs) into clinical trials and paving the way for the next generation of cancer therapies.

Portrait photo of Dr. Astrid, who leads the Cancer Cell Biology team at Pfizer

Dr. Astrid Ruefli-Brasse

Head of Cancer Cell Biology

Astrid’s desire to discover new cancer treatments began in her childhood after seeing the impact neuroblastoma had on her younger cousin. Astrid now leads the Cancer Cell Biology team at Pfizer, where she and her team are striving to understand and disrupt the cancer cell pathways that drive cancer growth. Her team’s research helps lead to new cancer therapies.

Portrait of Dr. Scott, who heads the ADC Discovery and Cancer Immunology group at Pfizer

Dr. Scott Peterson

Head of ADC Discovery and Cancer Immunology

Scott’s early passion for biology blossomed into his life's mission to take on cancer, leading to his significant role in the discovery of antibody-drug conjugate (ADC) medicines for specific cancer types. He now heads the ADC Discovery and Cancer Immunology group at Pfizer. His team’s research is focused on identifying groundbreaking cancer treatments.

Portrait of Dr. Steffan, who studies the uniqueness of each person’s cancer to help an oncologist choose a treatment best suited for the person they are treating

Dr. Steffan Ho

Head of Translational Oncology

A physician-scientist, Steffan studies the uniqueness of each person’s cancer to help an oncologist choose a treatment best suited for the person they are treating. His work was key in developing a test that can help diagnose and select treatments most effective for people with non-small cell lung cancer (NSCLC). As a child, Steffan lost his father to cancer, inspiring him to improve the lives of people impacted by the disease, which he recognizes as all of us.