Our Team

We have built a team with deep expertise in ADC development.

Hui Li, Ph.D

President and CEO

Hui Li, Ph.D. is President and CEO of Adcentrx Therapeutics. Dr. Li has over 20 years of drug discovery and business development experience in the biotech and pharmaceutical industry. Prior to founding Adcentrx in 2021, he was the CEO of Levena Biopharma, a subsidiary of Sorrento Therapeutics, focusing on antibody-drug conjugate (ADC) development. He also served as SVP of Business Development and General Manager of China Operations at Sorrento Therapeutics. During his time at Levena, he was responsible for developing a portfolio of site-specific ADC products and establishing a GMP production site to support clinical development of both internal and external ADC programs. Before Levena, he served as Executive Director of Business Development at PPD and Head of Business Development at its pre-clinical division BioDuro.

Prior to joining PPD, he spent 10 years at Pfizer Global Research & Development, where he led several programs in the areas of oncology, diabetes, antiviral, and ophthalmology, which successfully progressed into clinical development.

Dr. Li received his B.S. in Chemistry from Peking University and his Ph.D. in Organic Chemistry from University of California, San Diego.

Hui Li, Ph.D

Founder, President & CEO

Hui Li, Ph.D

President and CEO

Hui Li, Ph.D. is President and CEO of Adcentrx Therapeutics. Dr. Li has over 20 years of drug discovery and business development experience in the biotech and pharmaceutical industry. Prior to founding Adcentrx in 2021, he was the CEO of Levena Biopharma, a subsidiary of Sorrento Therapeutics, focusing on antibody-drug conjugate (ADC) development. He also served as SVP of Business Development and General Manager of China Operations at Sorrento Therapeutics. During his time at Levena, he was responsible for developing a portfolio of site-specific ADC products and establishing a GMP production site to support clinical development of both internal and external ADC programs. Before Levena, he served as Executive Director of Business Development at PPD and Head of Business Development at its pre-clinical division BioDuro.

Prior to joining PPD, he spent 10 years at Pfizer Global Research & Development, where he led several programs in the areas of oncology, diabetes, antiviral, and ophthalmology, which successfully progressed into clinical development.

Dr. Li received his B.S. in Chemistry from Peking University and his Ph.D. in Organic Chemistry from University of California, San Diego.

Pia Challita-Eid, Ph.D

Chief Scientific Officer

Pia Challita-Eid, Ph.D. is Chief Scientific Officer at Adcentrx Therapeutics and serves as the Head of Research. She brings over 20 years of experience in the biotechnology industry, contributing to the discovery and progression into the clinic of over 12 drug candidates including the FDA-approved product Padcev™.

Prior to joining Adcentrx in 2021, she served as Vice President, ADC Research at Levena Biopharm, a Sorrento Therapeutics company, where she led the preclinical ADC pipeline. Previously, she held various positions with increasing responsibilities at Agensys Inc., an affiliate of Astellas Pharmaceuticals Inc., supporting the company’s pipeline portfolio including ADCs and Immuno-oncology candidates. She led the molecular oncology initiatives, target identification and selection, therapeutic antibody discovery and engineering activities. Dr. Challita-Eid began her career in academia as a faculty member at the University of Rochester Cancer Center focusing on cancer immunotherapy.

Dr. Challita-Eid received her B.S. and M.S. in Biology from the American University of Beirut, and her Ph.D. in Microbiology from the University of Southern California. She conducted her post-doctoral training at the University of California, Los Angeles.

Pia Challita-Eid, Ph.D

Chief Scientific Officer

Pia Challita-Eid, Ph.D

Chief Scientific Officer

Pia Challita-Eid, Ph.D. is Chief Scientific Officer at Adcentrx Therapeutics and serves as the Head of Research. She brings over 20 years of experience in the biotechnology industry, contributing to the discovery and progression into the clinic of over 12 drug candidates including the FDA-approved product Padcev™.

Prior to joining Adcentrx in 2021, she served as Vice President, ADC Research at Levena Biopharm, a Sorrento Therapeutics company, where she led the preclinical ADC pipeline. Previously, she held various positions with increasing responsibilities at Agensys Inc., an affiliate of Astellas Pharmaceuticals Inc., supporting the company’s pipeline portfolio including ADCs and Immuno-oncology candidates. She led the molecular oncology initiatives, target identification and selection, therapeutic antibody discovery and engineering activities. Dr. Challita-Eid began her career in academia as a faculty member at the University of Rochester Cancer Center focusing on cancer immunotherapy.

Dr. Challita-Eid received her B.S. and M.S. in Biology from the American University of Beirut, and her Ph.D. in Microbiology from the University of Southern California. She conducted her post-doctoral training at the University of California, Los Angeles.

Maojun Guo, Ph.D

Senior Vice President, Research

Maojun Guo, Ph.D. is Senior Vice President, Research at Adcentrx Therapeutics. Dr. Guo has more than 25 years of drug development experience across both academia and industry.

Prior to joining Adcentrx in 2021, Dr. Guo held Vice President positions at Gear Pharma, Levena Biopharma and Shanghai Alputon PharmTech where he was responsible for the chemistry of internal and external projects, which included discovery, IND-enabling CMC work, GMP production and ADC platform development. Dr. Guo has also held roles at Lundbeck, ArQule and Hybridon where he participated in programs in the areas of antisense oligonucleotides, combinatorial chemistry, and CNS, and was involved with Lundbeck’s major depressive disorder Trintellix/Brintellix (vortioxetine) program that successfully launched in 2013. Before entering the BioPharma industry, Dr. Guo was a researcher at Sheffield University and the MRC Laboratory of Molecular Biology at Cambridge University.

Dr. Guo earned his B.S. in Analytical Chemistry from Wuhan University and his Ph.D. in Medicinal Chemistry from Peking University Medical School.

Maojun Guo, Ph.D

Senior Vice President, Research

Maojun Guo, Ph.D

Senior Vice President, Research

Maojun Guo, Ph.D. is Senior Vice President, Research at Adcentrx Therapeutics. Dr. Guo has more than 25 years of drug development experience across both academia and industry.

Prior to joining Adcentrx in 2021, Dr. Guo held Vice President positions at Gear Pharma, Levena Biopharma and Shanghai Alputon PharmTech where he was responsible for the chemistry of internal and external projects, which included discovery, IND-enabling CMC work, GMP production and ADC platform development. Dr. Guo has also held roles at Lundbeck, ArQule and Hybridon where he participated in programs in the areas of antisense oligonucleotides, combinatorial chemistry, and CNS, and was involved with Lundbeck’s major depressive disorder Trintellix/Brintellix (vortioxetine) program that successfully launched in 2013. Before entering the BioPharma industry, Dr. Guo was a researcher at Sheffield University and the MRC Laboratory of Molecular Biology at Cambridge University.

Dr. Guo earned his B.S. in Analytical Chemistry from Wuhan University and his Ph.D. in Medicinal Chemistry from Peking University Medical School.

Alex Chu-Kung, Ph.D

Vice President, CMC

Alexander Chu-Kung, Ph.D. is Vice President, CMC and the head of development at Adcentrx Therapeutics. Prior to joining Adcentrx ins 2021, Dr. Chu-Kung was the Senior Director of Development at Levena Biopharma, a subsidiary of Sorrento Therapeutics where he was responsible for all aspects of process development, cGMP manufacturing and clinical supply of the antibody drug conjugate pipeline.

Before joining Levena Biopharma, Dr. Chu-Kung spent more than decade at AbbVie, most recently as a principal scientist. In this role he oversaw process development, tech transfer, CMO interaction and scale-up for both small molecule and biologic therapeutics.

Dr. Chu-Kung holds a Ph.D. degree in Chemical Engineering from University of California, Santa Barbara and a B.S. degree in chemical engineering from Northwestern University.

Alex Chu-Kung, Ph.D

Vice President, CMC

Alex Chu-Kung, Ph.D

Vice President, CMC

Alexander Chu-Kung, Ph.D. is Vice President, CMC and the head of development at Adcentrx Therapeutics. Prior to joining Adcentrx ins 2021, Dr. Chu-Kung was the Senior Director of Development at Levena Biopharma, a subsidiary of Sorrento Therapeutics where he was responsible for all aspects of process development, cGMP manufacturing and clinical supply of the antibody drug conjugate pipeline.

Before joining Levena Biopharma, Dr. Chu-Kung spent more than decade at AbbVie, most recently as a principal scientist. In this role he oversaw process development, tech transfer, CMO interaction and scale-up for both small molecule and biologic therapeutics.

Dr. Chu-Kung holds a Ph.D. degree in Chemical Engineering from University of California, Santa Barbara and a B.S. degree in chemical engineering from Northwestern University.

Andrew Hopkins

Vice President, Business Development

Andrew Hopkins is Vice President, Business Development at Adcentrx Therapeutics. He has nearly 20 years of corporate development and strategic planning experience on both the buy- and sell-side. He has completed transactions with over $1 billion in aggregate deal value, including M&A, licensing, collaborations and fund raising.

Prior to joining Adcentrx in 2022, he was Senior Director, Business Development at Halozyme Therapeutics, a public biotechnology company focused on enabling platforms for the pharmaceutical industry, where he led the search and evaluation efforts for platform M&A. Previously, Mr. Hopkins held various positions with increasing responsibility at Vical Incorporated where he led the reverse merger with Brickell Bio in 2019 and the licensing of VL-2397 from Astellas in 2015. Mr. Hopkins has additional experience as a management consultant at Campbell Alliance (now Syneos Health) and a pharmaceutical sales representative at Quintiles.

Mr. Hopkins holds a B.S. in Microbiology and Biotechnology from the University of Cape Town and a Master of Business and Science from the Keck Graduate Institute of Applied Life Sciences.

Andrew Hopkins

Vice President, Business Development

Andrew Hopkins

Vice President, Business Development

Andrew Hopkins is Vice President, Business Development at Adcentrx Therapeutics. He has nearly 20 years of corporate development and strategic planning experience on both the buy- and sell-side. He has completed transactions with over $1 billion in aggregate deal value, including M&A, licensing, collaborations and fund raising.

Prior to joining Adcentrx in 2022, he was Senior Director, Business Development at Halozyme Therapeutics, a public biotechnology company focused on enabling platforms for the pharmaceutical industry, where he led the search and evaluation efforts for platform M&A. Previously, Mr. Hopkins held various positions with increasing responsibility at Vical Incorporated where he led the reverse merger with Brickell Bio in 2019 and the licensing of VL-2397 from Astellas in 2015. Mr. Hopkins has additional experience as a management consultant at Campbell Alliance (now Syneos Health) and a pharmaceutical sales representative at Quintiles.

Mr. Hopkins holds a B.S. in Microbiology and Biotechnology from the University of Cape Town and a Master of Business and Science from the Keck Graduate Institute of Applied Life Sciences.

Sabine Rottmann, Ph.D

Senior Director, Discovery Research

Sabine Rottmann, Ph.D. is Senior Director, Discovery Research at Adcentrx Therapeutics. She is a molecular biologist by training with expertise in target identification and validation, drug discovery and clinical development in oncology, specializing in ADCs. In her nearly 20 years of experience, she has led and initiated multiple ADC programs from early research through clinical development.

Before joining Adcentrx in 2021, Dr. Rottmann held multiple positions of increasing responsibility across multiple departments at the Genomics Institute of the Novartis Research Foundation (GNF).

Dr. Rottmann received her M.S. in Biochemistry, Genetics, Immunology, Molecular biology and Microbiology and her Ph.D. in Biochemistry and Molecular Biology from the Medical School of Hannover.

Sabine Rottmann, Ph.D

Senior Director, Discovery Research

Sabine Rottmann, Ph.D

Senior Director, Discovery Research

Sabine Rottmann, Ph.D. is Senior Director, Discovery Research at Adcentrx Therapeutics. She is a molecular biologist by training with expertise in target identification and validation, drug discovery and clinical development in oncology, specializing in ADCs. In her nearly 20 years of experience, she has led and initiated multiple ADC programs from early research through clinical development.

Before joining Adcentrx in 2021, Dr. Rottmann held multiple positions of increasing responsibility across multiple departments at the Genomics Institute of the Novartis Research Foundation (GNF).

Dr. Rottmann received her M.S. in Biochemistry, Genetics, Immunology, Molecular biology and Microbiology and her Ph.D. in Biochemistry and Molecular Biology from the Medical School of Hannover.

Danny Lee, Ph.D

Director, Chemistry

Danny Lee, Ph.D. is Director, Chemistry at Adcentrx Therapeutics. Dr. Lee is an organic chemist specialized in small molecule synthesis, ADCs, peptide/protein chemistry, and chemical biology. He has deep expertise in total chemical synthesis of biomolecules, synthetic vaccine construct development, and orthogonal bioconjugation of peptides and proteins. He brings to Adcentrx an extensive hybrid of academic and industry experience in biopharmaceutical development with numerous publications of peer-reviewed journal articles, patents, and invention disclosures.

Prior to joining Adcentrx in 2021, Dr. Lee was a scientist at AbbVie from 2015 where he focused on ADC development.

Dr. Lee earned his B.S. in Medicinal Chemistry and Ph.D. in Chemistry from the University of Auckland.

Danny Lee, Ph.D

Director, Chemistry

Danny Lee, Ph.D

Director, Chemistry

Danny Lee, Ph.D. is Director, Chemistry at Adcentrx Therapeutics. Dr. Lee is an organic chemist specialized in small molecule synthesis, ADCs, peptide/protein chemistry, and chemical biology. He has deep expertise in total chemical synthesis of biomolecules, synthetic vaccine construct development, and orthogonal bioconjugation of peptides and proteins. He brings to Adcentrx an extensive hybrid of academic and industry experience in biopharmaceutical development with numerous publications of peer-reviewed journal articles, patents, and invention disclosures.

Prior to joining Adcentrx in 2021, Dr. Lee was a scientist at AbbVie from 2015 where he focused on ADC development.

Dr. Lee earned his B.S. in Medicinal Chemistry and Ph.D. in Chemistry from the University of Auckland.

Kris Zhang, Ph.D

Director, Protein Sciences

Kris Zhang, Ph.D. is Director, Protein Sciences at Adcentrx Therapeutics. Dr. Zhang is a protein scientist with extensive experience in therapeutic antibody discovery and development of early to late-stage products.

Before joining Adcentrx in 2022, Dr. Zhang cofounded Fresh Wind Biotechnologies where he was the SVP of Cell Therapy. Previously, he held multiple roles of increasing responsibility at Gilead Sciences where he led the antibody discovery, engineering and developability assessments for research programs in multiple therapeutic areas. Dr. Zhang has additionally held roles at AnaptysBio, the Genomics Institute of the Novartis Research Foundation (GNF), the Burnham Institute for Medical Research and Novasite Pharmaceuticals.

Dr. Zhang holds a B.S. in Biochemistry from Nankai University, M.S. in Biology from the University of Houston and a Ph.D. in Biochemistry and Molecular Biology from Baylor College of Medicine.

Kris Zhang, Ph.D

Director, Protein Sciences

Kris Zhang, Ph.D

Director, Protein Sciences

Kris Zhang, Ph.D. is Director, Protein Sciences at Adcentrx Therapeutics. Dr. Zhang is a protein scientist with extensive experience in therapeutic antibody discovery and development of early to late-stage products.

Before joining Adcentrx in 2022, Dr. Zhang cofounded Fresh Wind Biotechnologies where he was the SVP of Cell Therapy. Previously, he held multiple roles of increasing responsibility at Gilead Sciences where he led the antibody discovery, engineering and developability assessments for research programs in multiple therapeutic areas. Dr. Zhang has additionally held roles at AnaptysBio, the Genomics Institute of the Novartis Research Foundation (GNF), the Burnham Institute for Medical Research and Novasite Pharmaceuticals.

Dr. Zhang holds a B.S. in Biochemistry from Nankai University, M.S. in Biology from the University of Houston and a Ph.D. in Biochemistry and Molecular Biology from Baylor College of Medicine.

Sam Janssen, Ph.D

Director, Analytical Sciences

Sam Janssen, Ph.D. is Director, Analytical Sciences at Adcentrx Therapeutics. Dr. Janssen has extensive experience in analytical method development, phase-appropriate validation and QC testing of Biopharmaceuticals in GMP environments.

Prior to joining Adcentrx in 2022, Dr. Janssen was most recently at Tanabe Research Laboratories where he was responsible for analytical support of research and pre-clinical development activities of antibodies, ADCs and other biologics. Dr. Janssen has held other senior-level analytical roles at Ajinomoto Althea and Amylin Pharmaceuticals.

Dr. Janssen holds a B.S. in Biochemistry from Zuyd University of Applied Sciences and a Ph.D. in Molecular Biology from the University of Geneva. He completed his post-doctoral training at Johns Hopkins University in Baltimore, MD.

Sam Janssen, Ph.D

Director, Analytical Sciences

Sam Janssen, Ph.D

Director, Analytical Sciences

Sam Janssen, Ph.D. is Director, Analytical Sciences at Adcentrx Therapeutics. Dr. Janssen has extensive experience in analytical method development, phase-appropriate validation and QC testing of Biopharmaceuticals in GMP environments.

Prior to joining Adcentrx in 2022, Dr. Janssen was most recently at Tanabe Research Laboratories where he was responsible for analytical support of research and pre-clinical development activities of antibodies, ADCs and other biologics. Dr. Janssen has held other senior-level analytical roles at Ajinomoto Althea and Amylin Pharmaceuticals.

Dr. Janssen holds a B.S. in Biochemistry from Zuyd University of Applied Sciences and a Ph.D. in Molecular Biology from the University of Geneva. He completed his post-doctoral training at Johns Hopkins University in Baltimore, MD.