Heterotaxy, Visceral, 8, Autosomal, also known as htx8, is related to situs inversus and primary ciliary dyskinesia. An important gene associated with Heterotaxy, Visceral, 8, Autosomal is PKD1L1 (Polycystin 1 Like 1, Transient Receptor Potential Channel Interacting). Affiliated tissues include heart and spleen, and related phenotypes are hypoplastic left heart and abdominal situs inversus