Article
A variant in the sonic hedgehog regulatory sequence (ZRS) is associated with triphalangeal thumb and deregulates expression in the developing limb.
Human molecular genetics - 15 Aug 2008
Furniss Dominic, Lettice Laura A, Taylor Indira B, Critchley Paul S, Giele Henk, Hill Robert E, Wilkie Andrew O M
Abstract excerpt
A locus for triphalangeal thumb, variably associated with pre-axial polydactyly, was previously identified in the zone of polarizing activity regulatory sequence (ZRS), a long range limb-specific enhancer of the Sonic Hedgehog (SHH) gene at human chromosome 7q36.3. Here, we demonstrate that a 295T>C variant in the human ZRS, previously thought to represent a neutral polymorphism, acts as a dominant allele with...
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