{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,17]],"date-time":"2025-10-17T19:28:32Z","timestamp":1760729312990},"reference-count":23,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[1999,12,1]],"date-time":"1999-12-01T00:00:00Z","timestamp":944006400000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J of Inher Metab Disea"],"published-print":{"date-parts":[[1999,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Glycine is a nonessential amino acid that serves as both an inhibitory and an excitatory neurotransmitter. Hyperglycinaemia occurs in nonketotic hyperglycinaemia, a primary defect in the glycine cleavage pathway, and as a secondary feature of several inborn errors of organic acid metabolism. However, specifically low levels of glycine have never been reported. Here we report a child with complementation group C xeroderma pigmentosum (XP) characterized by a splice donor mutation in the XPC gene, multiple skin cancers and specific and persistent hypoglycinaemia. He has cognitive delay, lack of speech, autistic features, hyperactivity and hypotonia, all unexplained by the diagnosis of XP group C, a non\u2010neurological form of the disease. Treatment with oral glycine has improved his hyperactivity. Specific hypoglycinaemia could indicate a metabolic disorder producing neurological dysfunction. Whether it is related to or coincidental with the XP is unclear.<\/jats:p>","DOI":"10.1023\/a:1005691424004","type":"journal-article","created":{"date-parts":[[2002,12,21]],"date-time":"2002-12-21T23:07:17Z","timestamp":1040512037000},"page":"915-924","source":"Crossref","is-referenced-by-count":7,"title":["Hypoglycinaemia and psychomotor delay in a child with xeroderma pigmentosum"],"prefix":"10.1002","volume":"22","author":[{"given":"E. J.","family":"Quackenbush","sequence":"first","affiliation":[{"name":"Division of Genetics Children's Hospital  Boston Massachusetts USA; and"},{"name":"Center for Blood Research  Boston Massachusetts USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"K. H.","family":"Kraemer","sequence":"additional","affiliation":[{"name":"Laboratory of Molecular Carcinogenesis National Cancer Institute  Bethesda Maryland USA"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"W. 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