Familial dysautonomia(FD,OMIM 223900;also known as HSAN Ⅲ or Riley-Day syndrome)is the most prevalent form of hereditary sensory and autonomic neuropathy(HSAN;
Asymmetric dimethylarginine(ADMA)and its enantiomer,symmetric dimethylarginine(SDMA),are naturally-occurring methylated metabolites of the L-arginine amino acid