Massachusetts Metabolic Disorders Screening Program: III. Sarcosinemia.

Sarcosinemia has been detected by routine screening of urine for metabolic and transport disorders in Massachusetts. Three infants who had sarcosinemia were detected through the neonatal urine specimen, an observed incidence of 1:350,000. A fourth child had sarcosinemia detected through family screening after his brother was found to have Hartnup disease by neonatal urine screening. These four children with sarcosinemia have plasma sarcosine concentrations ranging from 80 to 603 mumol/L and urine sarcosine from 2.1 to 9.4 mumol/mg of creatinine, findings similar to those reported for persons with sarcosinemia. No treatment has been given. At 3.8 to 15 years of age, the children had normal findings on physical examination and had no specific illnesses. Their full-scale IQ scores ranged from 89 to 111. The oldest child had a learning and emotional disorder, and one other child was emotionally unstable. It was concluded that sarcosinemia as a specific disorder is probably benign and that the mental retardation and dysmorphic features described in some affected persons are likely coincidental with the biochemical defect. The emotional disturbances that were encountered in two children are also probably coincidental but need further attention in this disorder.
AuthorsH L Levy, J T Coulombe, R Benjamin
JournalPediatrics (Pediatrics) Vol. 74 Issue 4 Pg. 509-13 (Oct 1984) ISSN: 0031-4005 [Print] UNITED STATES
PMID6207480 (Publication Type: Journal Article, Research Support, U.S. Gov't, P.H.S.)
Chemical References
  • Sarcosine
  • Adolescent
  • Affective Symptoms (complications)
  • Amino Acid Metabolism, Inborn Errors (complications, diagnosis, epidemiology)
  • Child, Preschool
  • Female
  • Humans
  • Intelligence
  • Male
  • Mass Screening
  • Massachusetts
  • Sarcosine (blood, cerebrospinal fluid, urine)

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