About CTI CTI Senior Leadership

CTI Senior Leadership

William Aronstein

William Aronstein, PhD, MD, FACP

Vice President, Global Medical Affairs

Dr. William Aronstein is currently Vice President, Global Medical Affairs.  He has vast experience in early phase clinical development, including protocol development, execution, and analysis, as well as over 35 years of clinical, academic, and industry experience.  He presently oversees the Medical Affairs group in their many roles, ranging from medical monitoring and protocol development to business development duties and countless other responsibilities. Prior to CTI, Bill held numerous positions with Procter and Gamble Pharmaceuticals. He was an Assistant Professor of Medicine at Emory University and held multiple positions with Johns Hopkins Hospital, including Attending Physician, Assistant Professor of Medicine, Clinical Director of the Division of Internal Medicine, and Clinical Director of Ambulatory Care in the Department of Medicine. Bill earned his Bachelor of Arts, summa cum laude, from Wesleyan University.  He received his Doctor of Philosophy in Pharmacology & Experimental Therapeutics and his Doctor of Medicine from the Johns Hopkins University.

Mike Bahm

Mike Bahm

Vice President, Global Information Technologies

Mike Bahm is currently Vice President, Global Information Technologies. Bahm has contributed to the growth and success of CTI since he joined the company in 2000. He is responsible for the Global IT department, including overseeing multiple systems,  managing international cybersecurity,  and acting as a mentor for his direct reports.  Over the past 17 years, he has been instrumental in building our infrastructure from the ground-up and supporting our IT needs through many upgrades and improvements, new system implementations, corporate moves, global expansions, and acquisitions. Mike earned his Bachelor of Science in Business Administration Information Systems from Xavier University.

Melanie Bruno (1)

Melanie Bruno, PhD, MBA

Vice President, Global Clinical Project Management 

Dr. Melanie Bruno is currently Vice President, Global Clinical Project Management, and has over 25 years of clinical drug development experience in the pharmaceutical and clinical research industries.  Before joining CTI, Melanie served as Vice President of Global Regulatory and Medical Affairs at Kendle International. After completing her postdoctoral work in Molecular Biology at Cincinnati Children’s Hospital Medical Center (CCHMC), Melanie held positions in Regulatory Affairs with Proctor & Gamble Pharmaceuticals and Eli Lilly.  In addition to her current role at CTI, Melanie is an Adjunct Professor at the College of Pharmacy at the University of Cincinnati for the Masters in Drug Development program and is an Adjunct Professor at Northern Kentucky University for the Certificate in Clinical Research program. Melanie received her Master of Business Administration and her Doctor of Philosophy in Developmental Biology from the University of Cincinnati.

Pat Dearing

Patrick Dearing

Vice President, Global Human Resources 

Patrick Dearing is currently Vice President, Global Human Resources, and has over 20 years in various Human Resource roles. Currently, Pat is, and will continue to be, a key advisor with respect to organizational development and structural changes/considerations, and leads the advancement of our Human Resource Department’s process improvement and strategic thinking. Prior to joining CTI, Pat spent nearly 20 years developing his expertise in various Human Resources roles, including serving as Senior Director, Global Benefits at Convergys Corporation and Director, Benefits at Cincinnati Children’s Hospital Medical Center. Pat earned his Masters of Business Administration at Xavier University and his Bachelor of Business Administration in Finance at University of Cincinnati.

David Mayleben

David Mayleben, PhD

Vice President, Research Site Services 

Dr. David Mayleben is currently Vice President, Research Site Services, with over 30 years of experience and expertise in the clinical research industry. Dave currently oversees the operations of the CTI Clinical Research Center (CTI CRC), a dedicated, multi-specialty clinical research site with multiple locations throughout Greater Cincinnati, Ohio. He also serves as investigator on numerous trials run in the CTI CRC. Prior to joining CTI, Dave was Co-Founder and President of Community Research, which was acquired by CTI in 2014. He also previously held positions at Clinical Research Associates, Inc., The Perception and Performance Laboratory at the University of Cincinnati, and The Center for Research in Sleep Disorders in Cincinnati, Ohio. Dr. Mayleben received his Doctor of Philosophy and Master of Arts degrees from the University of Cincinnati, and his Bachelor of Science degree from the University of Kentucky.  

Joseph Mccafferty

Joseph M. McCafferty

Vice President, Global Business Development & Client Management

Joseph McCafferty, Vice President, Global Business Development & Client Management, has more than 35 years of sales and industry experience.  Joe is currently responsible for overseeing and training CTI's global sales team as it continues to grow and expand to various geographies. Prior to joining CTI, Joe spent over 20 years in the pharmaceutical and biotechnology industries, working for companies such as A.H. Robbins Company, Ortho Biotech (Johnson and Johnson), SangStat Medical Corporation, and Wyeth Pharmaceuticals in roles of increasing responsibility. Joe received his Bachelor of Science in Management/Marketing.

Maria Joao

Maria João Queiroz, MD

Vice President, Global Real World Evidence and Late Phase

Maria João Queiroz is currently Vice President, Global Real World Evidence and Late Phase, with many years of experience and expertise in the clinical research industry. Prior to joining CTI, Maria João was Co-Founder and President of Eurotrials, a CRO specializing in Europe and Latin America, which was acquired by CTI in 2017. Maria João earned her Doctor of Medicine from University of Lisbon.

Kathy Schroeder

Kathleen M. Schroeder, MBA

Vice President, Global Business Development Operations

Kathleen Schroeder, Vice President of Global Business Development Operations, has more than 35 years of IT and professional services experience that includes a unique mix of science, business, and technology.  Kathy is responsible for managing the people and creating the processes that support the company’s global business development operation functions. Prior to joining CTI, Kathy worked for nearly 20 years with SMS/Siemens Medical Health Systems in a variety of positions, and she also worked at Jewish Hospital in St. Louis, Missouri.  Kathy received her bachelor’s degree in biology from St. Louis University and her Master in Business Administration from the University of Cincinnati.

Gunter Stetter

Günter Stetter, MSc, PhD

Vice President, Global Regulatory Affairs Study Start-Up

Dr. Günter Stetter currently serves as Vice President, Global Regualtory Affairs Study Start-Up, where he is responsible for overseeing all clinical start-up documents and submissions across the world. He has been vital to the growth of CTI’s European presence, including previously servicing as Senior, Director of Clinical Operation, Europe. Günter has over 30 years of clinical, academic, and industry experience, with the majority of those years spent successfully planning and managing multinational clinical trial programs across all phases and in multiple therapeutic areas. Prior to CTI, Günter was Director of Clinical Operations for AAIPharma Deutschland GmbH & Co. KG Neu-Ulm, and spent time as a project manager and study manager for Rentschler Biotechnologie GmbH and Rentschler Arzneimittel GmbH & Co. KG.  Günter began his career as an Assistant Professor of Biochemistry at the Universität Ulm. Günter obtained a Doctor of Science and a Master of Science from the Universität Ulm.