Israel “Sol” Penn, (1930–1999) About the Registry Welcome to the Israel Penn International Transplant Tumor Registry (IPITTR) Registry Submission and retrieval of transplant-related tumor information Consultation Online submission of patient information for a consultation request Publications Links to abstracts published by Dr. Penn and the IPITTR Personnel Background information and curriculum vitae of Dr. Penn and the IPITTR Board of Directors Contact Feel free to contact us with questions and or comments