PMID- 19931353 OWN - NLM STAT- MEDLINE DCOM- 20100323 LR - 20240418 IS - 0006-3002 (Print) IS - 0006-3002 (Linking) VI - 1805 IP - 1 DP - 2010 Jan TI - Tumor heterogeneity: causes and consequences. PG - 105-17 LID - 10.1016/j.bbcan.2009.11.002 [doi] AB - With rare exceptions, spontaneous tumors originate from a single cell. Yet, at the time of clinical diagnosis, the majority of human tumors display startling heterogeneity in many morphological and physiological features, such as expression of cell surface receptors, proliferative and angiogenic potential. To a substantial extent, this heterogeneity might be attributed to morphological and epigenetic plasticity, but there is also strong evidence for the co-existence of genetically divergent tumor cell clones within tumors. In this perspective, we summarize the sources of intra-tumor phenotypic heterogeneity with emphasis on genetic heterogeneity. We review experimental evidence for the existence of both intra-tumor clonal heterogeneity as well as frequent evolutionary divergence between primary tumors and metastatic outgrowths. Furthermore, we discuss potential biological and clinical implications of intra-tumor clonal heterogeneity. CI - Copyright (c) 2009 Elsevier B.V. All rights reserved. FAU - Marusyk, Andriy AU - Marusyk A AD - Department of Medical Oncology, Dana-Farber Cancer Institute, Department of Medicine, Brigham and Women's Hospital, Department of Medicine, Harvard Medical School, 44 Binney Street, Boston, MA 02115, USA. FAU - Polyak, Kornelia AU - Polyak K LA - eng GR - P01 CA080111/CA/NCI NIH HHS/United States GR - P01 CA080111-118269/CA/NCI NIH HHS/United States GR - P01 CA 080111/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. PT - Review DEP - 20091118 PL - Netherlands TA - Biochim Biophys Acta JT - Biochimica et biophysica acta JID - 0217513 SB - IM MH - *Genetic Heterogeneity MH - Humans MH - Neoplasms/*genetics/*pathology PMC - PMC2814927 MID - NIHMS160602 EDAT- 2009/11/26 06:00 MHDA- 2010/03/24 06:00 PMCR- 2011/01/01 CRDT- 2009/11/26 06:00 PHST- 2009/08/25 00:00 [received] PHST- 2009/11/05 00:00 [revised] PHST- 2009/11/10 00:00 [accepted] PHST- 2009/11/26 06:00 [entrez] PHST- 2009/11/26 06:00 [pubmed] PHST- 2010/03/24 06:00 [medline] PHST- 2011/01/01 00:00 [pmc-release] AID - S0304-419X(09)00074-2 [pii] AID - 10.1016/j.bbcan.2009.11.002 [doi] PST - ppublish SO - Biochim Biophys Acta. 2010 Jan;1805(1):105-17. doi: 10.1016/j.bbcan.2009.11.002. Epub 2009 Nov 18.