Methylmalonic Aciduria, Transient, Due to Transcobalamin Receptor Defect, also known as aciduria, methylmalonic, due to transcobalamin receptor defect, is related to methylmalonic acidemia due to transcobalamin receptor defect. An important gene associated with Methylmalonic Aciduria, Transient, Due to Transcobalamin Receptor Defect is CD320 (CD320 Molecule). Related phenotypes are methylmalonic aciduria and methylmalonic acidemia