Abstract |
Phospho-ribosyl- pyrophosphate synthetase 1 (PRPS1) deficiency is secondary to loss of function variants in PRPS1. This enzyme generates phospho-ribosyl- pyrophosphate (PRPP), which is utilized in the synthesis of purines, nicotinamide adenine dinucleotide ( NAD), and NAD phosphate ( NADP), among other metabolic pathways. Arts syndrome, or severe PRPS1 deficiency, is an X-linked condition characterized by congenital sensorineural hearing loss, optic atrophy, developmental delays, ataxia, hypotonia, and recurrent infections that can cause progressive clinical decline, often resulting in death before 5 years of age. Supplementation of the purine and NAD pathways outside of PRPP-dependent reactions is a logical approach and has been reported in a handful of patients, two with S-adenosylmethionine (SAMe) and one with SAMe and nicotinamide riboside (NR). We present the clinical course of a fourth Arts syndrome patient who was started on therapy and review previously reported patients. All patients had stability or improvement of symptoms, suggesting that SAMe and NR can be a treatment option in Arts syndrome, though further studies are warranted.
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Authors | Angela Lee, Renatta Knox, Margaret Reynolds, Erin McRoy, Hoanh Nguyen |
Journal | JIMD reports
(JIMD Rep)
Vol. 64
Issue 6
Pg. 417-423
(Nov 2023)
ISSN: 2192-8304 [Print] United States |
PMID | 37927483
(Publication Type: Case Reports)
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Copyright | © 2023 The Authors. JIMD Reports published by John Wiley & Sons Ltd on behalf of SSIEM. |