About Us

Our team brings together unparalleled expertise in mitochondrial biology

Pretzel was founded by some of the world’s foremost researchers in mitochondrial biology and is led by accomplished experts in drug discovery, drug development and company foundation. Our deep expertise enables us to potentially address the underlying drivers for a wide range of mitochondrial diseases.

The name Pretzel is inspired by the focal point of our science, the mitochondrion, whose twisting inner-membrane is one of many fascinating features that make it unlike any other organelle in the body.

John Walker
John Walker, FRS, FMedSci
Emeritus Professor of Molecular Bioenergetics at the MRC Mitochondrial Biology Unit in the University of Cambridge
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Rebekah Hailes
Rebekah Hailes, Ph.D., M.S.
Manager, Program Management
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Michal Minczuk
Michal Minczuk, Ph.D.
Co-Founder
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Xie Xie
Xie Xie, Ph.D.
Scientist II (Group Leader)
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Gabriel Martinez
Gabriel Martinez, Ph.D.
Chief Scientific Officer & Co-Founder
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Baruch Harris
Baruch Harris, Ph.D.
Chief Operating Officer
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Roger D. Kornberg
Roger D. Kornberg, Ph.D.
Professor of Structural Biology at Stanford University School of Medicine
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Kristina Burow
Kristina Burow
Managing Director, ARCH Venture Partners
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Alaa Halawa
Alaa Halawa, MBA
Partner and Head of U.S. Ventures, Mubadala Capital
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Per Samuelsson
Per Samuelsson
Partner, HealthCap
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Robert Tansle
Robert Tansley, M.D., MBA
Partner, Cambridge Innovation Capital
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Claes Gustafsson
Claes Gustafsson, M.D., Ph.D.
Co-Founder
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Reetika Bhardwaj
Reetika Bhardwaj, Ph.D., MBA (Observer)
Associate, ARCH Venture Partners
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Cindy Phan
Cindy Phan, M.S.
Associate Scientist I
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Maria Falkenberg
Maria Falkenberg, Ph.D.
Co-Founder
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Jay Parrish
Jay Parrish, Ph.D.
Chief Executive Officer & Chairman of the Board
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Michelle McElroy
Michelle McElroy
Operations Administrator
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Sir Doug Turnbull
Sir Doug Turnbull, M.D., Ph.D., FMedSci, FRS
Sir Doug Turnbull, M.D., Ph.D., FMedSci, FRS Emeritus Professor of Neurology and previously Director of the Wellcome Centre for Mitochondrial Research at Newcastle University
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Julia Sullivan
Julia Sullivan
Manager, Executive Office
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Fred H. Gage
Fred H. Gage, Ph.D.
Professor at the Laboratory of Genetics, Adler Chair of Age-Related Neurodegenerative Disease and President of the Salk Institute for Biological Studies
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Andrew Griffin
Andrew Griffin, Ph.D.
Vice President, Chemistry
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Paul Thurk
Paul Thurk, MBA
In Memoriam, Co-Founder and Chairman Emeritus
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Jeremy Green
Jeremy Green, Ph.D.
Senior Vice President, Research
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Mattias Stamgren
Mattias Stamgren, M.S.
Associate Scientist I
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Noa Rotem-Warner
Noa Rotem-Warner
Associate Director, Operations
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Paolo Di Giorgio
Paolo Di Giorgio, Ph.D., MBA (Observer)
Chief Executive Officer and Managing Director of Angelini Ventures
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Cheryl Calhoun
Cheryl Calhoun, MBA
Vice President & Global Head of Operations
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Javier Miralles Fusté
Javier Miralles Fusté, Ph.D.
Scientist II (Group Leader)
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Simon Giroux
Simon Giroux, Ph.D.
Vice President, Chemistry
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Nils-Göran Larsson
Nils-Göran Larsson, M.D., Ph.D.
Co-Founder
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Nuha Svensson
Nuha Svensson
Manager, Operations - Sweden
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Gunther Kern
Gunther Kern, Ph.D., MBA
Consultant - Biochemistry​ & Biology
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Paul Charifson, Ph.D.
Senior Research Advisor
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Jeff Saunders, Ph.D.
Senior Research Advisor
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Thomas Keating, Ph.D.
Senior Vice President & Head of Biology
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Felecia Blair
Director, Contracts
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Dave Ehmann, Ph.D.
Vice President, Biology
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Marta Potapo
Associate Scientist I
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Carol Geukens
Associate Scientist I
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Laleh Arabanian, Ph.D.
Scientist II
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Carlos Pardo Hernández, Ph.D.
Scientist I
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Emma Korhonen
Associate Scientist I
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Juli Jones, Ph.D.
Vice President, Biology
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Jason Labutti, Ph.D.
Vice President, DMPK
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Kirstin Anderson
Vice President, Finance
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Andrew McKenzie
Associate Director, Chemistry
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Jonas Hansson, M.S., MBA (Observer)
Co-Founder and Chief Executive Officer, AO Pharma
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Amy Liu (Observer)
Investor, Mubadala Capital – Ventures
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Jon Novak, M.S.
Senior Director, DMPK
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Sarah Coutts
Executive Assistant
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S. Jordan Kerns, Ph.D.
Associate Director, Biology
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