{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,15]],"date-time":"2026-10-15T22:01:54Z","timestamp":1792101714598,"version":"4.4.0"},"reference-count":21,"publisher":"Wiley","issue":"4","license":[{"start":{"date-parts":[[2013,3,6]],"date-time":"2013-03-06T00:00:00Z","timestamp":1362528000000},"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":[[2013,7]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Serine deficiency disorders are caused by a defect in one of the three synthesising enzymes of the L\u2010serine biosynthesis pathway. Serine deficiency disorders give rise to a neurological phenotype with psychomotor retardation, microcephaly and seizures in newborns and children or progressive polyneuropathy in adult patients. There are three defects that cause serine deficiency of which 3\u2010phosphoglycerate dehydrogenase (3\u2010PGDH) deficiency, the defect affecting the first step in the pathway, has been reported most frequently. The other two disorders in L\u2010serine biosynthesis phosphoserine aminotransferase (PSAT) deficiency and phosphoserine phosphatase (PSP) deficiency have been reported only in a limited number of patients. The biochemical hallmarks of all three disorders are low concentrations of serine in cerebrospinal fluid and plasma. Prompt recognition of affected patients is important, since serine deficiency disorders are treatable causes of neurometabolic disorders. The use of age\u2010related reference values for serine in CSF and plasma can be of great help in establishing a correct diagnosis of serine deficiency, in particular in newborns and young children.<\/jats:p>","DOI":"10.1007\/s10545-013-9592-4","type":"journal-article","created":{"date-parts":[[2013,3,5]],"date-time":"2013-03-05T15:02:00Z","timestamp":1362495720000},"page":"613-619","source":"Crossref","is-referenced-by-count":120,"title":["An update on serine deficiency disorders"],"prefix":"10.1002","volume":"36","author":[{"given":"S. N.","family":"van der Crabben","sequence":"first","affiliation":[{"name":"Department of Medical Genetics University Medical Center Utrecht Utrecht The Netherlands"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"N. 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