The 5th edition of the World Health Organization Classification of Haematolymphoid Tumours: Myeloid and Histiocytic/Dendritic Neoplasms

Joseph D. Khoury, Eric Solary, Oussama Abla, Yassmine Akkari, Rita Alaggio, Jane F. Apperley, Rafael Bejar, Emilio Berti, Lambert Busque, John K. C. Chan, Weina Chen, Xueyan Chen, Wee-Joo Chng, John K. Choi, Isabel Colmenero, Sarah E. Coupland, Nicholas C. P. Cross, Daphne De Jong, M. Tarek Elghetany, Emiko Takahashi, Jean-Francois Emile, Judith Ferry, Linda Fogelstrand, Michaela Fontenay, Ulrich Germing, Sumeet Gujral, Torsten Haferlach, Claire Harrison, Jennelle C. Hodge, Shimin Hu, Joop H. Jansen, Rashmi Kanagal-Shamanna, Hagop M. Kantarjian, Christian P. Kratz, Xiao-Qiu Li, Megan S. Lim, Keith Loeb, Sanam Loghavi, Andrea Marcogliese, Soheil Meshinchi, Phillip Michaels, Kikkeri N. Naresh, Yasodha Natkunam, Reza Nejati, German Ott, Eric Padron, Keyur P. Patel, Nikhil Patkar, Jennifer Picarsic, Uwe Platzbecker, Irene Roberts, Anna Schuh, William Sewell, Reiner Siebert, Prashant Tembhare, Jeffrey Tyner, Srdan Verstovsek, Wei Wang, Brent Wood, Wenbin Xiao, Cecilia Yeung, Andreas Hochhaus

2022Published
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Abstract

AbstractThe upcoming 5th edition of the World Health Organization (WHO) Classification of Haematolymphoid Tumours is part of an effort to hierarchically catalogue human cancers arising in various organ systems within a single relational database. This paper summarizes the new WHO classification scheme for myeloid and histiocytic/dendritic neoplasms and provides an overview of the principles and rationale underpinning changes from the prior edition. The definition and diagnosis of disease types continues to be based on multiple clinicopathologic parameters, but with refinement of diagnostic criteria and emphasis on therapeutically and/or prognostically actionable biomarkers. While a genetic basis for defining diseases is sought where possible, the classification strives to keep practical worldwide applicability in perspective. The result is an enhanced, contemporary, evidence-based classification of myeloid and histiocytic/dendritic neoplasms, rooted in molecular biology and an organizational structure that permits future scalability as new discoveries continue to inexorably inform future editions.

Journal: Leukemia

Publisher: Springer Science and Business Media LLC

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