Toshinari Ohara, Ph.D., Chief Executive Officer

Toshinari Ohara is currently the Chief Executive Officer at Sekisui XenoTech. Toshi received a Ph.D. in Pharmaceutical Sciences from Nagoya City University in 1991. Toshi was previously part of the management team at XenoTech from 2009 to 2013 before returning to Sekisui Medical Co. to serve as the Head of the R&D division at the ADME & Tox Research Institute. Most recently, Toshi served as the General Manager of Business Planning Department for Sekisui's Drug Development Solutions Division.

Darren Warren, Ph.D., Chief Operating Officer

Darren Warren currently serves as Chief Operating Officer at Sekisui XenoTech. Darren obtained his Ph.D. in Pharmacology and Toxicology from the University of California, Davis. He joined Sekisui XenoTech in 2017 with 15 years of leadership experience with Contract Research Organizations (CROs) and almost 30 years of leadership experience in the pharmaceutical industry. As an accomplished executive with expertise in operations, business, strategy, and science, Dr. Warren is focused on identifying and accelerating strategic and operational measures that strengthen performance while maintaining Sekisui XenoTech's high level of quality, professionalism and excellence.

Joanna Barbara, Ph.D., Vice President, Scientific Operations

Joanna Barbara currently serves as Vice President of Scientific Operations at Sekisui XenoTech. Joanna obtained her Ph.D. in Analytical Chemistry from the University of Florida. She joined Sekisui XenoTech in 2007. In that time, Joanna has served in Mass Spectrometry Specialist roles, as the Division Director of Analytical Services and Division Director of Scientific Operations at Sekisui XenoTech. Dr. Barbara also serves as an Adjunct Graduate Professor of Pharmaceutical Sciences for the College of Pharmacy at the University of Missouri – Kansas City. She has authored or coauthored numerous scientific posters and papers, and has represented Sekisui XenoTech as an invited speaker at various analytical and drug metabolism conferences. Joanna is quality-oriented with extensive experience in DMPK, regulatory compliance and process and project management. As Vice President of Scientific Operations, Dr. Barbara is responsible for the development, design, operation, and improvement of Sekisui XenoTech's Scientific Division.

Brian Ogilvie, Ph.D., Vice President, Scientific Consulting

Brian Ogilvie currently serves as Vice President of Scientific Consulting at Sekisui XenoTech. Brian obtained his Ph.D. in toxicology from the University of Kansas Medical Center and B.A. in molecular biology from William Jewell College. He joined XenoTech in 1997. From 1999 to 2006 Dr. Ogilvie was the head of the CYP Inhibition Department at Sekisui XenoTech. Brian is an author or coauthor on over 50 scientific posters, peer-reviewed publications or book chapters on the topics of drug metabolism, transport and drug-drug interactions, and has represented the company as an invited speaker at various drug metabolism conferences. In April 2006, Brian became a member of the Sekisui XenoTech Consulting Department, in which he participates in drug-drug interaction-related R&D projects and authoring various publications, and also writes expert opinions for consulting clients. As Vice President of Scientific Consulting, Dr. Ogilvie is additionally involved in quality management and strategic planning for the company in scientifically relevant areas.

Frank Kruse, Vice President, Business Development

Frank Kruse currently serves as Vice President of Business Development at Sekisui Xenotech, and has spent his career commercializing novel, high-growth technologies within larger corporate entities and for venture-backed start-ups in the life sciences. He attended the University of Missouri for degrees in Agricultural Economics and Russian Studies before attending advanced language training at Leningrad State University with Duke University and further training at Cornell. He finished his education with an MS Ag Econ and Statistics at North Carolina State University. His diverse background includes global marketing and sales roles in animal health, medical devices, healthcare technologies and related services.

Allen Roberson, Vice President, Finance & Administration

Allen Roberson joined Sekisui XenoTech in 2017 and currently serves as Vice President of Finance and Administration at Sekisui XenoTech. Allen has over 25 years of consulting, public accounting, financial management and operational management experience. He has over 20 years of experience in the life science industry, which includes serving as Chief Financial Officer for two local pharmaceutical companies. Allen has a Bachelor's degree in Accounting from Drake University, is a Certified Public Accountant and currently serves on the Board of Directors and Treasurer of BioKansas and the Negro Leagues Baseball Museum as well as the Board of Trustees of Rockhurst High School, where he recently led the President search. He is active in several professional groups in the Kansas City area.

Angela Kreps, Vice President, Strategic Development

Angela joined Sekisui XenoTech in 2015 after serving 10 years as the president and CEO of the Kansas Bioscience Organization where she was instrumental in regional and national bioscience initiatives for funding, research, and education. Angela led the Commercial Operations division, which included Sales, Marketing and Customer Service, until 2018. In that time, Angela’s team consistently exceeded revenue targets, setting company records for sales and customer service. In April, 2018, she transitioned into the role of Vice President of Strategic Development. Named one of Kansas City’s Most Influential Women in 2008, Angela has filled executive and producer roles in multiple industries including bioscience, non-profit, tax compliance, and financial services, earing multiple President’s Clubs, Top Manager awards, and individual career achievements. Outside of work Angela enjoys golf and donates time to a number of Boards of Directors and Advisory Boards. Angela graduated from Kansas State University with a Bachelor of Science degree and lives in Kansas City with her husband and daughters.

Maciej Czerwinski, Ph.D., Division Director, Consulting

Maciej Czerwinski currently serves as Director of Consulting at Sekisui XenoTech. Maciej received his PhD from the University of Maryland at Baltimore Medical School in the Department of Pathology. He conducted his doctoral thesis research in the Laboratory of Dr. Frank Gonzalez at National Cancer Institute in Bethesda, followed by a post-doc at the Department of Pharmaceutics, University of Washington in Seattle. He has been with Sekisui XenoTech since 1999 and guides the development of products and services for the in vitro analysis of drug safety. Maciej designed a patented method to analyze the in vitro cytokine-mediated drug-drug interactions between biologics and small molecule drugs. Dr. Czerwinski is also the inventor of XenoTech’s CryostaX single-freeze pooled hepatocytes.

Etsuko Usuki, Ph.D., Division Director, Core Services

Etsuko Usuki currently serves as Director of Core Services at Sekisui XenoTech. Etsuko received her PhD in Analytical Chemistry from Virginia Polytechnic Institute and State University, and BS in Pharmaceutical Sciences from Kobegakuin University in Japan. After working as an Analytical Chemist at Takeda and Postdoctoral Research Associate at the Harvey W. Peters Center for the Study of Parkinson’s Disease (VA Tech), she joined Sekisui XenoTech as a Senior Scientist for the Drug Metabolism Department in 1998. Dr. Usuki is responsible for directing the implementation of Sekisui XenoTech’s quality vision throughout the Program Execution, Program Oversight and Lab Operations teams, with a focus on scientific quality in the lab, interpretation of data and study oversight.

Andrea Wolff, Division Director, Services Logistics

Andrea Wolff received her Bachelors of Science with a double major in Chemistry and Biology at Baker University and she joined the Sekisui XenoTech team in 1999. She has more than 15 years of experience with GLP and non-GLP in vitro metabolism and transporter studies at Sekisui XenoTech. Her experience started as an analyst and then Study Director focusing on in vitro drug metabolism studies. After over 10 years focusing on in vitro metabolism, her focus shifted to in vitro drug transporter studies, serving as a Study Director and then Manager for 5 years. She then expanded her focus, managing drug interaction studies across multiple disciplines (in vitro drug metabolism, drug transporters, enzyme induction and enzyme inhibition) and providing guidance to clients on the regulatory requirements for performing in vitro drug interaction studies. Andrea is now serving as the Director of Service Logistics at Sekisui XenoTech, managing several core service support teams that cover protocol writing, report writing, data processing and project management. She is responsible for the quality and timelines associated with all contract study deliverables executed at Sekisui XenoTech.

Zell Woodworth, Division Director, Products

Zell Woodworth currently serves as the Director of Products at Sekisui XenoTech. Zell holds B.Sc. Degrees in Biology and Chemistry from Olivet Nazarene University in Illinois. He began his career with XenoTech in 1996 and has over 20 years of experience in the development, production, and distribution of tissue-derived in vitro experimental models essential in drug candidate screening, drug-drug interaction investigations, and drug safety. Zell’s current role is the management of raw material procurement, development, production, and quality control of over 350 biological products utilized in pharmaceutical research in over 25 countries. Zell continues to provide technical support, product workshops, and in vitro test system support throughout the US, Europe, Japan, and India.