Systematic name M10651
Brief description Genes down-regulated in 293 cells (embryonic kidney) expressing polymorphic variants S427G (SNP ID=rs2070235) or I624M (SNP ID=rs11556379) of BMYB [GeneID=4605].
Full description or abstract The B-MYB proto-oncogene is a transcription factor belonging to the MYB family that is frequently overexpressed or amplified in different types of human malignancies. While it is suspected that B-MYB plays a role in human cancer, there is still no direct evidence of its causative role. Looking for mutations of the B-MYB gene in human cell lines and primary cancer samples, we frequently isolated two nonsynonymous B-MYB polymorphic variants (rs2070235 and rs11556379). Compared to the wild-type protein, the B-MYB isoforms display altered conformation, impaired regulation of target genes and decreased antiapoptotic activity, suggesting that they are hypomorphic variants of the major allele. Importantly, the B-MYB polymorphisms are common; rs2070235 and rs11556379 are found, depending on the ethnic background, in 10-50% of human subjects. We postulated that, if B-MYB activity is important for transformation, the presence of common, hypomorphic variants might modify cancer risk. Indeed, the B-MYB polymorphisms are underrepresented in 419 cancer patients compared to 230 controls (odds ratio 0.53; (95%) confidence interval 0.385-0.755; P=0.001). This data imply that a large fraction of the human population is carrier of B-MYB alleles that might be associated with a reduced risk of developing neoplastic disease.
Collection C2: Curated
      CGP: Chemical and Genetic Perturbations
Source publication Pubmed 18026132   Authors: Schwab R,Bussolari R,Corvetta D,Chayka O,Santilli G,Kwok JM,Ferrari-Amorotti G,Tonini GP,Iacoviello L,Bertorelle R,Menin C,Hubank M,Calabretta B,Sala A
Exact source Table 2S: WT to ATG
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Source species Homo sapiens
Contributed by Jessica Robertson (MSigDB Team)
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Version history 3.1: SCHWAB_TARGETS_OF_BMYB_S427G_DN

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