Abstract:We report a 13-year-old girl with nephropathic cystinosis on chronic peritoneal dialysis who presented with two episodes of stroke. Laboratory evaluation showed severe hyperhomocysteinemia (108 mumol/l). Further testing revealed that she was homozygous for the thermolabile variant of the methylenetetrahydrofolate reductase (MTHFR) gene. Treatment with folic acid and vitamin B12 lowered plasma homocysteine to less than 20 mumol/l. No further episodes of stroke occurred over a follow-up of 12 months. Homocystein… Show more
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