High Quality Content by WIKIPEDIA articles! Adenosine monophosphate deaminase deficiency type 1 is also called myoadenylate deaminase deficiency. It a recessive genetic metabolic disorder that affects approximately 1–2% of populations of European descent. It appears to be considerably rarer in Asian populations. The genetic form is caused by a defect in the gene for AMP deaminase though there is also an acquired form of AMP deficiency.