When caused by a mutation in the MOCS1 gene it is the type A variant. It can also be caused by a mutation in the MOCS2 gene or the GEPH gene. As of 2010, there had been approximately 132 reported cases. It should not be confused with<unk>  deficiency.
Molybdenum cofactor deficiency
Molybdenum deficiency
Boron deficiency 
Mineral deficiency
Chromium deficiency
Fluorine deficiency
Biotin deficiency
Copper deficiency