Ann Leen, PhD

Chief Scientific Officer

“First and foremost, it’s about the patient. Then, the past: What’s gone before to support what’s underway right now. Then, the future: the pipeline.”

Dr. Ann Leen co-founded AlloVir and serves as Chief Scientific Officer.

Dr. Ann Leen co-founded and serves as Chief Scientific Officer of AlloVir. For more than 20 years, Dr. Leen has led innovative discovery and translational research focused on developing novel T cell-based therapies. Her research has enabled multiple cell therapy programs to move from bench to bedside. She is currently the principal investigator (PI) on 5 investigator-initiated Investigational New Drug (IND) studies and over the past 10 years has served as PI on more than 10 clinical trials using “first in man” cell therapies for patients.

In addition to her role at AlloVir, Dr. Leen continues to serve as Professor in the Department Pediatrics at the Center for Cell and Gene Therapy, Baylor College of Medicine, Houston, where she has held various faculty positions since 2005. She is senior or co-author on more than 90 publications and a named inventor on 14 published patents.

Ann received her B.S. in Biochemistry at the University of College Cork in Cork, Ireland and her Ph.D. in Immunology at the CRC Institute for Cancer Studies in Birmingham, UK.

Life @ AlloVir

Mission-driven teams developing transformative cell therapies for patients deserve transformative benefits. We make sure your life outside the lab is as purposeful as your life inside it.
Life @AlloVir
Trust, commitment, and the drive to build something together. Interested in being part of our vision? Check out our open positions.
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PTO Policies
Making sure that you have the freedom to time off when you need to is an important part of our culture. Life beyond the lab includes a flexible approach to PTO; you take it when you need it.
Life @AlloVir
Trust, commitment, and the drive to build something together. Interested in being part of our vision? Check out our open positions.
Apply Now
401k Plans
We offer 401(k) matching, employer-paid life short and long-term disability, and life insurance.
Life @AlloVir
Trust, commitment, and the drive to build something together. Interested in being part of our vision? Check out our open positions.
Apply Now
Healthcare
Our health plans include medical, vision, and dental covered at 90%, as well as Flexible Spending Accounts (FSA) and Dependent Care Accounts (DCA).
Life @AlloVir
Trust, commitment, and the drive to build something together. Interested in being part of our vision? Check out our open positions.
Apply Now
Family Leave
Growing and taking care of your family is as important as the work you do. We offer a generous parental leave program that allows you to do just that.
Life @AlloVir
Trust, commitment, and the drive to build something together. Interested in being part of our vision? Check out our open positions.
Apply Now
Cell phone and commuter reimbursement
Being connected and getting where you need to go is an important part of your work. We offer cell phone and commuter reimbursement programs that acknowledge the time you spend in and out of the office.
Life @AlloVir
Trust, commitment, and the drive to build something together. Interested in being part of our vision? Check out our open positions.
Apply Now

AlloVir is the Global Leader in Developing VST Immunotherapies

We develop highly innovative allogeneic, off-the-shelf VST therapy candidates designed to treat or prevent devastating viral infections and diseases.

Our Pipeline

Our allogeneic, off-the-shelf, VST therapy candidates target 12 different devastating viruses to treat or prevent life-threatening viral diseases.
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Our Platform

Our proprietary platform develops allogeneic, off-the-shelf VSTs designed to restore immunity in patients with T cell deficiencies.
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Our People

Our founders have a singular vision: to serve patients at risk of the devastating consequences of severe viral infections and diseases.
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AlloVir does not control and is not responsible for the content on the website you are about to visit. AlloVir is providing this link as a convenience, and this link does not imply AlloVir’s endorsement of any material on the website you are about to visit. Do you wish to continue?