Blood · 2013
Whole-genome integrative analysis reveals expression signatures predicting transformation in follicular lymphoma.
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Brodtkorb Marianne, Lingjærde Ole Christian, Huse Kanutte, Trøen Gunhild, Hystad Marit, Hilden Vera I, Myklebust June H, Leich Ellen, Rosenwald Andreas, Delabie Jan, Holte Harald, Smeland Erlend B
Аннотация
Transformation of follicular lymphoma (FL) to a more aggressive disease is associated with rapid progression and death. Existing molecular markers for transformation are few and their clinical impact is limited. Here, we report on a whole-genome study of DNA copy numbers and gene expression profiles in serial FL biopsies. We identified 698 genes with high correlation between gene expression and copy number, and the molecular network most enriched for these cis-associated genes. This network includes 14 cis-associated genes directly related to the nuclear factor κB (NF-κB) pathway. For each of these 14 genes, the correlated NF-κB target genes were identified and corresponding expression scores were defined. The scores for 6 of the cis-associated NFκB pathway genes (BTK, IGBP1, IRAK1, ROCK1, TMED7-TICAM2, and TRIM37) were significantly associated with transformation. The results suggest that genes regulating B-cell survival and activation are involved in transformation of FL.