Cyanosis, Transient Neonatal, also known as tncy, is related to fetal hemoglobin quantitative trait locus 1 and sickle cell disease, and has symptoms including cyanosis An important gene associated with Cyanosis, Transient Neonatal is HBG2 (Hemoglobin Subunit Gamma 2). Related phenotypes are hepatomegaly and anemia