About Us

Where science meets the will to fight

Our products come from years of research and development performed by world-renowned immunologists—our founders, Yang Liu, PhD, and Pan Zheng, MD, PhD.

Anchored by a team of business strategists and operations leaders with a proven history of getting products through clinical development, we are poised to offer patients battling evasive cancers a more promising path forward.

Leadership team

Yang Liu, PhD

Founder, Chairman, Chief Executive Officer, and Chief Scientific Officer

pan zheng

Pan Zheng, MD, PhD

Founder, Chief Medical Officer, and Board Member

Helen Schlitz

Helen F. Schiltz, MS, PhD

Chief Operating Officer

James Deyonker

James DeYonker, JD

General Counsel

Pan Pan

Pan Pan, PhD, MBA

SVP, Head of BD

SVP, Investor Relations

Jamie Chen

SVP, Clinical Operations

Sergey Efuni

Sergey Efuni, MD, PhD

Vice President, Global Clinical Development

Kazuharu Kai, MD, PhD

VP, Clinical Development

Karen Hughes

Vice President, Quality Assurance

Vadim Tsvetnitsky

Vadim Tsvetnitsky, PhD

Vice President, CMC Biologics

Jeanette Widner

Jeanette Weidner

Vice President, Finance

Founders and Board

Yang Liu, PhD

Founder, Chairman, Chief Executive Officer, and Chief Scientific Officer

pan zheng

Pan Zheng, MD, PhD

Founder, Chief Medical Officer, and Board Member

Christopher Mortko

Christopher Mortko, PhD, MBA

Board Member

Kun-Liang

Kun-Liang Guan, PhD

Board Member

Scientific Advisory Board

M Caliguri

Michael A. Caligiuri, MD

Advisory Board Member

Lieping

Lieping Chen, MD, PhD

Advisory Board Member

Kun-Liang

Kun-Liang Guan, PhD

Advisory Board Member

Kun He

Advisory Board Member

Heather Wakelee

Heather Wakelee, MD

Advisory Board Member

Jeffrey Cummings

Jeffrey Cummings, MD, ScD(HC)

Advisory Board Member

Our Investors and Partners

Join the OncoC4 team

Interested in joining our team of world-renowned scientists and leaders?