Abstract:
:Whole-genome sequencing of patient DNA can facilitate diagnosis of a disease, but its potential for guiding treatment has been under-realized. We interrogated the complete genome sequences of a 14-year-old fraternal twin pair diagnosed with dopa (3,4-dihydroxyphenylalanine)-responsive dystonia (DRD; Mendelian Inheritance in Man #128230). DRD is a genetically heterogeneous and clinically complex movement disorder that is usually treated with l-dopa, a precursor of the neurotransmitter dopamine. Whole-genome sequencing identified compound heterozygous mutations in the SPR gene encoding sepiapterin reductase. Disruption of SPR causes a decrease in tetrahydrobiopterin, a cofactor required for the hydroxylase enzymes that synthesize the neurotransmitters dopamine and serotonin. Supplementation of l-dopa therapy with 5-hydroxytryptophan, a serotonin precursor, resulted in clinical improvements in both twins.
journal_name
Sci Transl Medjournal_title
Science translational medicineauthors
Bainbridge MN,Wiszniewski W,Murdock DR,Friedman J,Gonzaga-Jauregui C,Newsham I,Reid JG,Fink JK,Morgan MB,Gingras MC,Muzny DM,Hoang LD,Yousaf S,Lupski JR,Gibbs RAdoi
10.1126/scitranslmed.3002243subject
Has Abstractpub_date
2011-06-15 00:00:00pages
87re3issue
87eissn
1946-6234issn
1946-6242pii
3/87/87re3journal_volume
3pub_type
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