The mouse curly whiskers () mutations are recessive alleles of hephaestin-like 1 ().

The spontaneous, curly whiskers mutation (abbreviated ) generates kinky, brittle vibrissae in homozygous mice. Although has been mapped to the centromeric end of mouse Chromosome 9, no particular gene has been causally implicated, and this lack of genetic assignment has stymied 's complete molecular and functional analysis. As a foundation for its positional cloning, we have fine-mapped to a small, 0.