paired-like homeodomain 1 is a protein that in humans is encoded by the PITX1gene.
Function
This gene encodes a member of the RIEG/PITX homeobox family, which is in the bicoid class of homeodomain proteins. Members of this family are involved in organ development and left-right asymmetry. This protein acts as a transcriptional regulator involved in basal and hormone-regulated activity of prolactin.
Clinical relevance
Mutations in this gene have been associated with autism and polydactyly in humans.
Genomic rearrangements at the PITX1 locus are associated with Liebenberg syndrome