Scientific Committee

Goals of Committee:

  • Preserve innovation in the field as well as rejuvenating interest, enthusiasm and the participation of more centers in research endeavors
  • Determine suitability of project proposals, provide advice and guidance to the Principle Investigator as well as oversight regarding data analysis and presentation

Roles of Committee:

  • Serve in more comprehensive mentorship roles
  • Help set research priorities within a given content area (i.e. determine what research questions remain unanswered using PHTS data related to rejection, PTLD, CAV, risk modeling, AMR (as subcategory under rejection), MCS, etc. using previous publications as a reference and the historical wisdom of the more senior members
  • Review preliminary project ideas or more fully developed proposals within a given content area work with individual investigators to refine hypotheses and/or methodologies so a more polished proposal could ultimately be reviewed and approved for analysis
  • A senior member from this committee would then assume more primary responsibility for mentoring the study investigator through the stages of analysis, analytic data review, secondary analyses, abstract preparation/presentation and manuscript submission. That individual would then be the senior author for that paper.

Committee Meetings:

  • Meets quarterly to conceive and prioritize potential project ideas guided by their knowledge of previous PHTS publications and an appreciation for the remaining questions the PHTS dataset could answer

2024 Scientific Committee Members

*Committee member terms are January through December of their specified year


Nancy Halnon
Mattel Children’s Hospital (UCL)

Vice Chair/ Steering-Scientific Liaison

Carol Wittlieb-Weber
The Children’s Hospital of Philadelphia (CPH)

Past Chair

Joshua Friedland- Little, MD
Seattle Children’s Hospital (SCH)

UAB Representatives

James Kirklin, MD
University of Alabama at Birmingham


Simon Urschel, MD
University of Alberta (UOA)

Deipanjan Nandi, MD
Nationwide Children’s Hospital (CCO)

Jacob Simmonds, MD
Great Ormond Street Hospital for Children (GOS)

Kathryn Gambetta, MD
Ann & Robert H. Lurie Children’s Hospital of Chicago (CMC)

Gary Beasley, MD
University of Iowa Children’s Hospital (UIO)

William Dreyer, MD
Texas Children’s Hospital (TCB)

Minoo Kavarana, MD
Medical University of South Carolina (MSC)

Allied Health and Nursing Representative

Debbie Malloy, RN, CPNP
Nationwide Children’s Hospital (CCO)

Parent Representative

Elaine Yong