Question: Is phosphoribosylpyrophosphate synthetase superactivity inherited ?
Answer: This condition is inherited in an X-linked pattern. The gene associated with this condition is located on the X chromosome, which is one of the two sex chromosomes. In males (who have only one X chromosome), a mutation in the only copy of the gene in each cell causes the disorder. In females (who have two X chromosomes), a mutation in one of the two copies of the gene in each cell sometimes causes the disorder. In most reported cases, affected individuals have inherited the mutation from a parent who carries an altered copy of the PRPS1 gene. A characteristic of X-linked inheritance is that fathers cannot pass X-linked traits to their sons. PRS superactivity may also result from new mutations in the PRPS1 gene and can occur in people with no history of the disorder in their family.
Source: GHR