Shengdar Q. Tsai, PhD
Dr. Tsai is an Associate Member in the Department of Hematology at St. Jude Children’s Research Hospital. His lab’s research focuses on developing genome editing technologies for therapeutics, with a special interest in editing human HSCs for treatment of hemoglobinopathies such as sickle cell disease and T-cells for cancer immunotherapy. In 2020, he was chosen as one of the American Society for Gene and Cell Therapy Outstanding New Investigators.
His group has recently developed CHANGE-seq, a state-of-the-art, sensitive, unbiased, high-throughput method for defining the genome-wide activity of genome editors (Lazzarotto et al. Nature Biotechnology 2020). Previously, he has led the development of methods for high-throughput genome editing with TALENs (Reyon and Tsai et al. Nature Biotechnology 2012), CRISPR-Cas genome editors with improved specificity by dimerization (Tsai et al. Nature Biotechnology 2014), widely adopted methods to define the genome-wide specificity of CRISPR-Cas nucleases such as GUIDE-seq (Tsai and Zheng et al. Nature Biotechnology 2015) and CIRCLE-seq (Tsai et al. Nature Methods 2017 and Lazzarotto et al. Nature Protocols 2018).
Dr. Tsai completed a postdoctoral fellowship at Massachusetts General Hospital & Harvard Medical School, Ph.D. in Functional Genomics and M.S. in Bioinformatics from North Carolina State University, and B.S. from the University of Michigan.

shengdar.tsai at stjude.org
Tsai Lab Members

Duane Currier
Director of Automation

Ashley Flory
Associate Scientist

Azusa Matsubara
Scientist

Jaqueline Chyr
Senior Bioinformatics Scientist

Niharika Pandala
Computational Researcher

Varun Katta
Senior Scientist

Rachael Wood
Associate Scientist

Joey LaMattina
Scientist

Ginny Nguyen
Lead Researcher

Kiera O'Keefe
Graduate Student

Nikolay Malinin
Senior Scientist

Kasey Jividen
Scientist

Harshita Sharma
Scientist

Diego Pulgarin
Post-doctoral Fellow

Ethan Creed
Graduate Student
Tsai Lab Alumni

Garret Manquen
Cell Therapy Scientist at Northwestern
Researcher (2023 - 2025)

Tiffany Yee
PhD Student at UT Southwestern
Researcher (2019 - 2021)

Andrea Lee
Graduate Student

Claire Greene
PhD Student at Duke University
Researcher (2023 - 2025)

Joe Slaiwa
Senior Researcher

Abby Cozart
PhD Student at University of Colorado Anshutz Medical
Researcher (2020 - 2022)

Dreylan Hines
Medical Student Columbia University
Researcher (2023 - 2024)

Despoina Trasanidou
Postdoctoral Fellow Sanquin
Post-doctoral Fellow

Cicera Lazzarotto
Senior Scientist at Be Bio
Scientist (2022)
Lead Researcher (2021-2022)
Senior Researcher (2019-2021)
Post-doctoral Fellow (2017-2019)

Michelle Lee
PhD Student at Northwestern
Researcher (2019 - 2021)

Elizabeth Urbina
PhD Student at Vanderbilt University
Researcher
