Benjamin Castleman Professor of Pathology, Harvard Medical School, Pathologist-in-Chief, Massachusetts General Hospital
David N.  Louis, MD, is the Benjamin Castleman Professor of Pathology at HMS and Pathologist-in-Chief at MGH. Under Dr.  Louis, the department has become a national leader in molecular diagnostics and pathology informatics, leading to a novel initiative in computational pathology.  Dr.  Louis' own neuropathology practice and research focuses on brain tumors, with an emphasis on the molecular basis of malignant gliomas and the application of molecular diagnostics to glioma classification.  He has published nearly 300 original articles, as well as numerous reviews, chapters and books (h-index = 99).  His laboratory was the first to demonstrate that molecular approaches could be used to classify malignant gliomas and that molecular approaches could be used to predict the response of malignant gliomas to specific therapies.  Dr.  Louis co-chaired and was the primary editor for the 2007 and the 2016 WHO Classification of Tumours of the Central Nervous System, is currently chairing the CNS tumor committee for the International Collaboration on Cancer Reporting, and is the founder and inaugural Steering Committee chair for cIMPACT-NOW (the Consortium to Inform Molecular and Practical Approaches to CNS Tumor Taxonomy).  He has served as chair of the Scientific Advisory Panel of the Brain Tumor Society, on the Board of Directors of the Society for Neuro-Oncology, and on editorial boards of more than 10 national and international journals.  Dr.  Louis was one of three editors for the 8th edition of Greenfield's Neuropathology and was first author of AFIP Fascicle on Non-neoplastic Disease of the Central Nervous System.   He was co-chair of the NIH Brain Tumor Progress Review Group and founding chair of the Cancer Biomarkers Study Section at NIH.
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