Paired-like homeodomain transcription factor 2 (PITX2)

Paired-like homeodomain transcription factor 2 (PITX2) is a homeobox protein acting as a transcription factor essential for embryonic development, especially in the formation of the eye, teeth, heart, and abdominal organs. It controls left-right asymmetry, regulates gene expression crucial for cell differentiation, and maintains hormone transcription in the anterior pituitary. Mutations or altered PITX2 expression are implicated in congenital developmental disorders, multiple cancers, cardiac arrhythmias, and chemotherapeutic resistance. PITX2 also serves as a disease biomarker and a functional mediator in key developmental and disease pathways.

Other names

Pituitary homeobox 2ARP1RGSRIEGRIEG1IGDSRSBrx1Otlx2ASGD4IDG2IGDS2IHG2IRID2PTX2solurshinhomeobox protein PITX2ALL1-responsive protein ARP1all1-responsive gene 1paired-like homeodomain transcription factor 2rieg bicoid-related homeobox transcription factorring dermoid of cornea syndrome geneanterior segment dysgenesis 4

Anticancer drugs can have increased or decreased effectiveness depending on PITX2 expression (via regulation of ABCB1 and cancer proliferation-related genes); gene therapy or molecular modulation targeting PITX2 activity or regulatory axis.