American journal of medical genetics · 1999
Long-chain L 3-hydroxyacyl-CoA dehydrogenase (LCHAD) deficiency does not appear to be the primary cause of lipid myopathy in patients with Bannayan-Riley-Ruvalcaba syndrome (BRRS).
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Otto L R, Boriack R L, Marsh D J, Kum J B, Eng C, Burlina A B, Bennett M J
Аннотация
In order to test the hypothesis that long-chain L 3-hydroxyacyl-coenzyme A dehydrogenase (LCHAD) deficiency is associated with the lipid myopathy and muscle carnitine deficiency observed in Bannayan-Riley-Ruvalcaba syndrome (BRRS), we studied the enzyme activity in cultured skin fibroblasts from three generations of a family with a clear dominant inheritance of BRRS. Enzyme activities were normal while the germline PTEN missense mutation P246L segregated with BRRS in this family. No PTEN mutations were identified in the original patient with BRRS and LCHAD deficiency. These data suggest that the previously reported case of LCHAD and BRRS either represents the coincidental concurrence of two rare genetic events or that a gene other than PTEN is related to LCHAD and BRRS.