Executive Team

Driving Progress Together

The GCAR Executive Leadership Team is comprised of experts in clinical research, drug development, clinical trials, technology development, commercialization, business development, and operations.

Chief Executive Officer / President

Meredith Buxton, PhD, MPH

Chief Medical Officer and Board Member

Tim Cloughesy, MD

Chief Financial Officer / Chief Operating Officer

Rachael Coleman, MBA

Senior Medical Advisor and Board Member

Gary B. Gordon, MD, PhD

Chief Business Officer

Robert F. Murray, III

Executive Director of Trial Operations

Ashley A. Powell, PhD

Together with our partners, we have an unwavering commitment to developing adaptive trials, sharing the research, nurturing relationships, and creating more access to treatments — ultimately driving faster, meaningful progress for patients.

GCAR Leadership Team – Meredith Buxton, CEO

Senior Management Team

ADAM JOHNSON
Associate Director, Clinical Data Management

TRACEY ROBERTS, BSN
Associate Director, Trial Operations

RACHEL ROSENSTEIN-SISSON
Senior Director of Administration

SARAH UNTCH, MS, ACRP-CP
Associate Director, Trial Operations

MATTHEW VIVA, JD
Associate Director, Legal

Driven by a Coalition of Preeminent Leaders

Partnerships

GCAR builds strong partnerships with academia, advocacy and philanthropic organizations, industry partners and healthcare systems

Shared Vision

GCAR’s leadership and partners share a vision of expediting discovery and development of treatments

Commitment

GCAR's leadership and partners are committed to driving meaningful progress for patients with rare and deadly diseases