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TGFBR1 and cancer susceptibility.


ABSTRACT: Transforming growth factor beta (TGF-?) is a potent inhibitor of cell growth. TGFBR1 6A is a polymorphism consisting of a 9-base pair in-frame deletion within exon 1 of the type I TGF-? receptor (TGFBR1), which results in a receptor with decreased TGF-? signaling capability. The discovery of an association between TGFBR1*6A and cancer susceptibility led to the hypothesis that hypomorphic variants of the TGF-? signaling pathway may predispose to the development of cancer. This hypothesis was tested in vivo with the development of a mouse model of Tgfbr1 haploinsufficiency. Tgfbr1 (+/-) mice developed twice as many intestinal tumors as Tgfbr1 (+/+). Tgfbr1 haploinsufficiency was also associated with early onset adenocarcinoma and increased tumor cell proliferation. A case control study identified two haplotypes associated with constitutively decreased TGFBR1 and substantially increased colorectal cancer risk indicating that TGFBR1 may act as a potent modifier of cancer risk.

SUBMITTER: Pasche B 

PROVIDER: S-EPMC4112675 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature

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TGFBR1 and cancer susceptibility.

Pasche Boris B   Pennison Michael J MJ   Jimenez Hugo H   Wang Minghui M  

Transactions of the American Clinical and Climatological Association 20140101


Transforming growth factor beta (TGF-β) is a potent inhibitor of cell growth. TGFBR1 6A is a polymorphism consisting of a 9-base pair in-frame deletion within exon 1 of the type I TGF-β receptor (TGFBR1), which results in a receptor with decreased TGF-β signaling capability. The discovery of an association between TGFBR1*6A and cancer susceptibility led to the hypothesis that hypomorphic variants of the TGF-β signaling pathway may predispose to the development of cancer. This hypothesis was test  ...[more]

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