Tibia, Hypoplasia or Aplasia of, with Polydactyly, also known as tibial hemimelia-polysyndactyly-triphalangeal thumb syndrome, is related to triphalangeal thumb with polysyndactyly and polydactyly, preaxial ii. An important gene associated with Tibia, Hypoplasia or Aplasia of, with Polydactyly is LMBR1 (Limb Development Membrane Protein 1), and among its related pathways/superpathways are Development of ureteric collection system and Hedgehog signaling pathway. Affiliated tissues include bone and prefrontal cortex, and related phenotypes are short stature and patellar aplasia