About Us
Rezo’s Differentiated Approach to Tackling Disease
Rezo is tackling some of the most difficult challenges in medicine by mapping and therapeutically targeting networks that go awry in disease. Starting with genomic data, Rezo integrates distinct, unbiased technologies coupled with artificial intelligence to identify targets and therapies. Based on pioneering work from the Quantitative Biosciences Institute (QBI) at the University of California, San Francisco, our mission is to break the mold in traditional drug development through the convergence of distinct scientific disciplines and insights from academia and industry. Rezo’s proprietary platform is applicable across a broad range of diseases. The initial focus of Rezo is in oncology, with plans to explore additional therapeutic areas through collaborations and partnerships.
People
World class scientists, investors, and board members drive fearless innovation. Our global network of academic and industry scientists enables the convergence of cutting-edge scientific disciplines and unique collaborations.
Integrated Platform
Fully integrated technologies elucidating protein-protein interactions, genetic interactions, chemical biology, structural biology, and bioinformatics have applications across disease areas.
Computation
Using network biology coupled with advanced artificial intelligence and machine learning for rapid, elevated, and thorough data integration and analysis.
Our Team
Rezo’s leadership consists of world-renowned scientists, proven drug developers, and experienced executives united by their mission to pioneer a new approach to better medicine.
People

Hannes Braberg, Ph.D.
Computational Biology

Todd Daigle

Krystal Fontaine, Ph.D.

Kevin Hu, Ph.D.

Alejandro Ramirez

Nevan Krogan, Ph.D.
Co-Founder and Chief Executive Officer
Nevan Krogan, Ph.D., is a Co-Founder and the Chief Executive Officer of Rezo. Nevan is a Professor at the University of California, San Francisco (UCSF), Director of Quantitative Biosciences Institute (QBI) and a Senior Investigator at Gladstone Institutes. Nevan has authored over 350 papers in the fields of genetics and molecular and systems biology and has given over 400 lectures and seminars around the world. He is a Searle Scholar, a Keck Distinguished Scholar, a recipient of the Roddenberry Prize for Biomedical Research as well as the Louis Pasteur Medal, and was recently elected to the European Molecular Biology Organization (EMBO). In recognition of his collaborative work bringing scientists across the globe to work together on SARS-CoV-2, and most notably French scientists, Nevan was awarded the French Legion of Honor in 2022. Nevan received a Ph.D. in Medical Genetics from University of Toronto and a M.Sc. in Biology and B.Sc. in Biochemistry from University of Regina in Saskatchewan, Canada.

Kevan Shokat, Ph.D.
Co-Founder
Kevan Shokat, Ph.D., is a Co-Founder at Rezo. He is also an investigator at the Howard Hughes Medical Institute, Professor in the Department of Cellular and Molecular Pharmacology at the University of California, San Francisco, and Professor in the Department of Chemistry at the University of California, Berkeley. Kevan’s research group is focused on the discovery of new small molecule tools and drug candidates targeting protein/lipid kinases, GTPases, and RNA helicases. His laboratory utilizes the tools of synthetic organic chemistry, protein engineering, structural biology, biochemistry and cell biology. He was inducted into the National Academy of Sciences (2010), the National Academy of Medicine (2011), and the American Academy of Arts and Sciences (2011). He has commercialized discoveries from his laboratory through co-founding several biotechnology companies including Intellikine, Araxes, Wellspring Biosciences, Kura Oncology, eFFECTOR Therapeutics, Mitokinin, Revolution Medicines, Erasca and Kumquat Biosciences. Kevan received his B.A. in Chemistry from Reed College and a Ph.D. in Organic Chemistry at the University of California, Berkeley. He carried out his post-doctoral work in Cellular Immunology at Stanford University.

George Scangos, Ph.D.
Co-Founder and Board Chairperson
George Scangos, Ph.D., is a Co-Founder and chairperson of the board at Rezo. He has served as a member of the board of directors of Vir Biotechnology, Inc. since January 2017 and was the President and Chief Executive Officer of Vir from 2016 to 2023. Previously, George served as Chief Executive Officer and as a member of the board of directors of Biogen Inc., a publicly traded biopharmaceutical company focused on the treatment of serious diseases. From October 1996 to July 2010, George was the President and Chief Executive Officer at Exelixis, Inc., a drug discovery and development company. From 1993 to 1996, George served as President of Bayer Biotechnology, where he was responsible for research, business development, process development, manufacturing, engineering and quality assurance of Bayer Biotechnology’s biological products. George received his Ph.D. in Microbiology from the University of Massachusetts and a B.A. in Biology from Cornell University.

Sourav Bandyopadhyay, Ph.D.
Co-Founder and Chief Scientific Officer
Sourav Bandyopadhyay, Ph.D., is a Co-Founder and the Chief Scientific Officer at Rezo. Sourav is also a Professor of Bioengineering & Therapeutics Sciences at the University of California, San Francisco (UCSF) and Co-Leader of the Molecular Oncology Program at the UCSF Helen Diller Family Comprehensive Cancer Center. He serves as an Associate Director of the Quantitative Biosciences Institute (QBI) at UCSF and his lab develops new platforms for the application of personalized medicine and cancer therapies. Sourav received a Ph.D. in Bioinformatics and Systems Biology from University of California, San Diego and a B.S. in Molecular Biology and Computer Science from University of Wisconsin Madison.

Natalia Jura, Ph.D.
Co-Founder
Natalia Jura, Ph.D., is a Co-Founder of Rezo. She is also a Professor at the Department of Cellular and Molecular Pharmacology and Investigator at the Cardiovascular Research Institute at the University of California, San Francisco (UCSF). Natalia’s group applies X-ray crystallography and cryo-EM to investigate mechanisms of receptor tyrosine kinase signaling, and non-canonical functions of atypical protein kinases, called pseudokinases. In addition to her research activities at UCSF, Natalia serves as an Associate Director of the Quantitative Biosciences Institute (QBI) at UCSF. Natalia was recently awarded a UCSF Byers Award and 2020 Women in Biochemistry and Molecular Biology Leadership Award from the American Society for Biochemistry and Molecular Biology. Natalia received a M.S. in Biochemistry from Jagiellonian University in Krakow, Poland and a Ph.D. in Molecular and Cellular Biology from Stony Brook University followed by postdoctoral training in structural biology at University of California, Berkeley.

Norbert Bischofberger, Ph.D.
Co-Founder and Board Member
Norbert Bischofberger, Ph.D., is a Co-Founder and board member at Rezo. He is also the President and Chief Executive Officer of Kronos Bio. Previously, Norbert was the Executive Vice President, Research and Development and Chief Scientific Officer at Gilead Sciences. During his 28-year tenure at Gilead, Norbert presided over the development and approval of more than 25 medicines for a range of serious conditions which led the transformation of the treatment of diseases such as HIV, HCV and lymphoma. Norbert was part of the core management team that grew Gilead from less than 50 employees with no revenues to 10,000 employees with $25B in revenue. Norbert received a Ph.D. in organic chemistry from Zurich’s Eidgenössische Technische Hochschule, an honorary doctorate in Natural Sciences from The University of Innsbruck, and an honorary doctorate in Letters in Medicine from Baylor College of Medicine.

Peggy Ackerberg
Executive Assistant
Peggy Ackerberg is an Executive Assistant at Rezo. She is also an Executive Assistant at the University of California San Francisco's Quantitative Biosciences Institute and has more than 20 years of EA experience in the Angel Investing/Venture Capital sector in the SF Bay Area.
Peggy received a B.A. in French Literature from the University of California, Irvine and holds an A.M. degree in Romance Languages & Literatures (French) from Harvard University.
In her spare time, Peggy enjoys rooting for the Golden State Warriors, the San Francisco 49ers, and her hometown favorite, the Kansas City Chiefs.

Chris Adams, Ph.D.
Director of Proteomics
Chris Adams is Director of Proteomics at Rezo. Chris has over 15 years experience in mass spectrometry-based proteomics in both industry and academia. Prior to joining Rezo, Chris was the Director of Bioinformatics Business Development at Bruker Corporation. Chris held the role of Director of Proteomics at Stanford University Mass Spectrometry, leading the SUMS and Stanford Cancer Center proteomics core, where his work led to more than 40 publications.
Chris received a B.S in Biochemistry from California Polytechnic State University, San Luis Obispo and a Ph.D. in Biological and Medical Mass Spectrometry from Uppsala University, Sweden.
Outside of work, Chris enjoys spending time with his wife, two daughters and two dogs including camping, water skiing and hiking.

Ali Bashir, Ph.D.
Head of Computational Biology and AI
Ali Bashir is Head of Computational Biology and AI at Rezo. Ali is a data scientist with over 15 years of experience building and leading long-term research programs in both industry and academia. Most recently, Ali worked at Google Research, developing AI-based active learning approaches on large biological datasets, and as an Assistant Professor of Genetics and Genomics at the Icahn School of Medicine at Mount Sinai, pioneering new methods to study large-scale human variation and infectious disease. His work has led to over 50 publications in leading journals.
Ali has a B.S. in Bioengineering from the University of California, Berkeley and a Ph.D. in Bioinformatics from the University of California, San Diego.
Outside of work, Ali likes to build LEGOs, play sports, and bike with his two boys.

Keelan Guiley, Ph.D.
Principal Scientist and Associate Director, Protein Sciences
Keelan Guiley is Principal Scientist and Associate Director, Protein Sciences at Rezo, focusing on structural characterization of novel protein-protein interactions found in disease. Keelan was trained as a Structural and Chemical Biologist, solving protein structures of the key cell cycles regulators CDK4, Cyclin D1, p27, p21, DREAM, Myb, and p53. Moreover, Keelan discovered the first small molecule to rescue wild-type function to mutant p53 through structure-based design.
Keelan received a B.S. in Chemistry from the University of California, San Diego and a Ph.D. in Chemistry from the University of California, Santa Cruz followed by postdoctoral training in Chemistry at the University of California, San Francisco.
Outside of the lab, Keelan likes to swim, surf, snowboard, eat good food, and drink good wine.

Deidre Johns, Ph.D.
Head of Chemistry
Deidre Johns is Head of Chemistry at Rezo. Deidre has over 20 years of experience in small molecule medicinal chemistry and is passionate about helping patients through drug discovery. Prior to joining Rezo, Deidre served as a Scientific Project Team Leader and Director of Medicinal Chemistry for targeted oncology efforts at Turning Point Therapeutics, which was acquired by Bristol Myers Squibb. Deidre has held chemistry leadership roles at Takeda Pharmaceuticals and Eli Lilly and Company, driving cross-functional scientific progress across multiple therapeutic areas including oncology, neuroscience, liver disease, and gastrointestinal diseases. She has contributed to the discovery of multiple clinical assets, development candidates and project-enabling tools.
Deidre received a B.S. in Chemistry from the University of California, San Diego and a Ph.D. in Organic Chemistry from the University of Colorado Boulder, followed by an American Cancer Society Postdoctoral Fellowship at Colorado State University.
Outside of work, Deidre enjoys spending time with her husband and daughter working on home projects, gardening, and hiking.

Shea King, M.B.A.
Head of Operations
Shea King is the Head of Operations at Rezo, leading all People, Finance, Facilities, Information Technology and Communications matters. She has held leadership roles at Ancestry and 23andMe and has a successful track record of building teams and scaling organizations. Shea has more than 15 years of experience in a variety of team leadership roles across diagnostics, medical device, and drug development at leading companies in the healthcare industry including Genentech, Siemens Healthineers, and Thermo Fisher Scientific.
Shea received her M.B.A. from the University of California, Berkeley Haas School of Business and holds a B.S. in Chemistry from the University of Oregon.
In her spare time, Shea likes to work out with Peloton instructor Jess Sims, buy too much fruit at the farmers market, see live music, and enjoy the playgrounds of the Bay Area with her husband and two young sons.

Katherine Schutt, Ph.D.
Scientist II, Discovery Biology & Target Validation
Katie Schutt is a Scientist II, Discovery Biology and Target Validation at Rezo. Katie started her career as a Postdoctoral Associate at the University of Vermont, focused on industry and multi-institution academic collaborations. After many years in New England, Katie relocated to the San Francisco Bay Area to pursue an opportunity at genome engineering startup Synthego.
Katie received a B.S. in Chemistry from Saint Michael’s College and a Ph.D. in Biochemistry and Cell Biology from Dartmouth College.
Outside of work, Katie enjoys exploring the Bay Area by gravel bike with her husband and checking out new parks in San Francisco with her golden retriever.

Simranjit Singh, Ph.D.
Scientist I, Discovery Biology & Target Validation
Sim Singh is a Scientist I in Discovery Biology and Target Validation at Rezo. Prior to joining Rezo, Sim worked as a Research Scientist at Arvinas.
Sim was trained as a cancer biologist, focusing on genetic and metabolic mechanisms of drug resistance in glioblastoma. Sim received a B.A. in Economics from New York University and a Ph.D. in Experimental Pathology/Cancer Biology from Duke University School of Medicine.
Outside of the lab, Sim enjoys playing basketball, rock climbing, and podcasting.

Jenna Triplett
Senior Research Associate, Protein Sciences
Jenna Triplett is a Senior Research Associate, Protein Sciences at Rezo. Jenna started her career as a Research Technician at the University of Denver and relocated to California to pursue opportunities with BioMarin Pharmaceuticals and Nutcracker Therapeutics.
Jenna received a B.S. in Molecular Biology from the University of Denver.
In her spare time, Jenna likes to crochet for her nephews, paddleboard, and explore California.
Board of Directors
Vineeta Agarwala, M.D., Ph.D.
Vineeta Agarwala, M.D., Ph.D., is a General Partner at Andreessen Horowitz where she leads investments for the firm’s Bio + Health fund across therapeutics, life sciences tools/diagnostics, and digital health. Previously, Vineeta held many different roles in the healthcare space: as a physician taking care of patients; as an operator at healthtech startups; and as a venture investor on the Google Ventures life sciences team. She was an early data scientist at Kyruus; a management consultant at McKinsey & Co; and a Director of Product Management at Flatiron Health, where she led the company’s partnership with Foundation Medicine. Vineeta holds a B.S. in biophysics from Stanford University, and M.D. and Ph.D. degrees from Harvard Medical School / MIT. She completed her clinical residency at Stanford, and is board certified in internal medicine. Vineeta continues to see patients at Stanford as an adjunct clinical Professor in the Division of Primary Care and Population Health.
Tiba Aynechi, Ph.D.
Tiba Aynechi is a General Partner of Norwest Venture Partners’ healthcare team with 20+ years of research and investment experience. Prior to joining Norwest, Tiba spent over ten years at Novo Holdings A/S, one of the top life sciences investment firms, with offices in the US and Europe. She has served on various public and private boards including iRhythm Technologies, Mirum Pharmaceuticals, Nkarta Therapeutics, Arcellx, Spruce Biosciences, and MDLive. Earlier in her career Tiba was a banker focused on M&A, licensing, and financing transactions involving biotech/pharma. Tiba attended the University of California Irvine where she received a Bachelor of Science degree in Physics with a Biomedical concentration. She also holds a Ph.D. in Biophysics from the University of California San Francisco, where she also did her Postdoctoral Fellowship. Tiba is also a published author of scientific articles and book chapters in rational drug design.
Norbert Bischofberger, Ph.D.
Norbert Bischofberger, Ph.D., is the President and Chief Executive Officer of Kronos Bio. Previously, Norbert was the Executive Vice President, Research and Development and Chief Scientific Officer at Gilead Sciences. During his 28-year tenure at Gilead, Norbert presided over the development and approval of more than 25 medicines for a range of serious conditions which led the transformation of the treatment of diseases such as HIV, HCV and lymphoma. Norbert was part of the core management team that grew Gilead from less than 50 employees with no revenues to 10,000 employees with $25B in revenue. Norbert received a Ph.D. in organic chemistry from Zurich’s Eidgenössische Technische Hochschule, an honorary doctorate in Natural Sciences from The University of Innsbruck, and an honorary doctorate in Letters in Medicine from Baylor College of Medicine.
Simeon George, M.D.
Simeon George, M.D., is the Chief Executive Officer and Managing Partner of SR One, with overall responsibility for the fund and is Chair of the Investment Committee. Simeon joined SR One in 2007 and established its San Francisco office in 2010. Previously, he worked in management consulting (Bain & Co.) and investment banking (Goldman Sachs). Simeon led SR One’s investments in several marquee deals including CRISPR Therapeutics (CRSP), Principia Biopharma (PRNB), Turning Point Therapeutics (TPTX), Progyny (PGNY), and Nkarta Therapeutics (NKTX), which he co-founded. Simeon has a B.A. from the Johns Hopkins University and an M.D./M.B.A. from the University of Pennsylvania School of Medicine/The Wharton School.
Nevan Krogan, Ph.D.
Nevan Krogan, Ph.D., is a Co-Founder and the Chief Executive Officer of Rezo. Nevan is a Professor at the University of California, San Francisco (UCSF), Director of Quantitative Biosciences Institute (QBI) and a Senior Investigator at Gladstone Institutes. Nevan has authored over 350 papers in the fields of genetics and molecular and systems biology and has given over 400 lectures and seminars around the world. He is a Searle Scholar, a Keck Distinguished Scholar, a recipient of the Roddenberry Prize for Biomedical Research as well as the Louis Pasteur Medal, and was recently elected to the European Molecular Biology Organization (EMBO). In recognition of his collaborative work bringing scientists across the globe to work together on SARS-CoV-2, and most notably French scientists, Nevan was awarded the French Legion of Honor in 2022. Nevan received a Ph.D. in Medical Genetics from University of Toronto and a M.Sc. in Biology and B.Sc. in Biochemistry from University of Regina in Saskatchewan, Canada.
George Scangos, Ph.D.
George Scangos, Ph.D., is a Co-Founder and chairperson of the board at Rezo. He has served as a member of the board of directors of Vir Biotechnology, Inc. since January 2017 and was the President and Chief Executive Officer of Vir from 2016 to 2023. Previously, George served as Chief Executive Officer and as a member of the board of directors of Biogen Inc., a publicly traded biopharmaceutical company focused on the treatment of serious diseases. From October 1996 to July 2010, George was the President and Chief Executive Officer at Exelixis, Inc., a drug discovery and development company. From 1993 to 1996, George served as President of Bayer Biotechnology, where he was responsible for research, business development, process development, manufacturing, engineering and quality assurance of Bayer Biotechnology’s biological products. George received his Ph.D. in Microbiology from the University of Massachusetts and a B.A. in Biology from Cornell University.
Technology
Rezo’s groundbreaking approach integrates data from multiple advanced technologies to give a more complete and accurate view of mechanisms that cause disease. Capitalizing on the abundance of genomic data available and recognizing the inherent limitations in translating sequence to function, the company’s Sequence to Systems to Drugs (SSD) platform is able to map molecular disease networks and identify new therapies by integrating the most recent and cutting-edge approaches in proteomics, genetics, structural biology, chemistry and bioinformatics.
The platform is broadly applicable and has already generated important findings across a variety of conditions from cancer to infectious disease, including critical efforts in understanding SARS-Cov-2 during the COVID-19 pandemic.
Integrating sophisticated technologies under one platform enables integration and cross-fertilization, yielding richer datasets and novel therapies
Careers
At the core, we are innovators equipping ourselves with state-of-the-art technologies and curious minds to revolutionize drug discovery and enable better health through better therapies. We recognize that realizing our mission depends as much on our people as it does on our science. We're cultivating a culture of collaboration, respect, honesty, and responsibility, where contributing to your team’s success is valued as highly as individual achievements. If you’re passionate about team science and breaking down barriers to progress in drug development, please consider joining us!