NMNAT1 mutations cause Leber congenital amaurosis.

Eric Pierce, Xiaowu Gai and colleagues identify mutations in NMNAT1 as a new cause of Leber congenital amaurosis, an early-onset form of retinal degeneration. NMNAT1 encodes an isoform of nicotinamide mononucleotide adenylyltransferase, which is required for nicotinamide adenine dinucleotide (NAD+) biosynthesis.