A compendium of myeloma-associated chromosomal copy number abnormalities and their prognostic value

作者：Walker Brian A^*; Leone Paola E; Chiecchio Laura; Dickens Nicholas J; Jenner Matthew W; Boyd Kevin D; Johnson David C; Gonzalez David; Dagrada Gian Paolo; Protheroe Rebecca K M; Konn Zoe J; Stockley David M; Gregory Walter M; Davies Faith E; Ross Fiona M; Morgan Gareth J

来源：Blood, 2010, 116(15): E56-E65.

DOI：10.1182/blood-2010-04-279596

To obtain a comprehensive genomic profile of presenting multiple myeloma cases we performed high-resolution single nucleotide polymorphism mapping array analysis in 114 samples alongside 258 samples analyzed by U133 Plus 2.0 expression array (Affymetrix). We examined DNA copy number alterations and loss of heterozygosity (LOH) to define the spectrum of minimally deleted regions in which relevant genes of interest can be found. The most frequent deletions are located at 1p (30%), 6q (33%), 8p (25%), 12p (15%), 13q (59%), 14q (39%), 16q (35%), 17p (7%), 20 (12%), and 22 (18%). In addition, copy number-neutral LOH, or uniparental disomy, was also prevalent on 1q (8%), 16q (9%), and X (20%), and was associated with regions of gain and loss. Based on fluorescence in situ hybridization and expression quartile analysis, genes of prognostic importance were found to be located at 1p (FAF1, CDKN2C), 1q (ANP32E), and 17p (TP53). In addition, we identified common homozygously deleted genes that have functions relevant to myeloma biology. Taken together, these analyses indicate that the crucial pathways in myeloma pathogenesis include the nuclear factor-kappa B pathway, apoptosis, cell-cycle regulation, Wnt signaling, and histone modifications. This study was registered at http://isrctn.org as ISRCTN68454111. (Blood.2010;116(15):e56-e65)

• 出版日期2010-10-14