Metabolomics,Unknown,Transcriptomics,Genomics,Proteomics

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Expression data from chronic lymphocytic leukemia (CLL) tumors in two time points

ABSTRACT: As part of a large genetic evolution study we also acquired 3'UTR expression arrays at two time points for the same 18 patients with CLL. We have analysed the data to evaluate whether genetic evolution (somatic mutations and Somatic copy number alterations) also manifested at the transcriptome level, either globally, or at the level of pre-defined curated geneset that correspond to specfic evolving genetic lesions. Samples were collected at two time points along the patients clinical course, with 13 patients having samples before treatment and at relapse, and 5 patients that were long term non progressors had sampling at two time points without intevening therapy.

ORGANISM(S): Homo sapiens

SUBMITTER: Dan Landau 

PROVIDER: E-GEOD-37168 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Publications

Clonal evolution is a key feature of cancer progression and relapse. We studied intratumoral heterogeneity in 149 chronic lymphocytic leukemia (CLL) cases by integrating whole-exome sequence and copy number to measure the fraction of cancer cells harboring each somatic mutation. We identified driver mutations as predominantly clonal (e.g., MYD88, trisomy 12, and del(13q)) or subclonal (e.g., SF3B1 and TP53), corresponding to earlier and later events in CLL evolution. We sampled leukemia cells fr  ...[more]

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