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5C50.F2 Homocarnosinosis

International Classification of Diseases for Mortality and Morbidity Statistics, 11th Revision, v2024-01

Homocarnosinosis is a metabolic defect characterised by progressive spastic diplegia, intellectual deficit and retinitis pigmentosa. This extremely rare disorder has been reported in only one family, namely a woman and three of her children. The latter showed but their mother was symptom free. It is therefore uncertain whether there is a relationship between the biochemical defect and the clinical symptoms. Inheritance in the reported family seems to be autosomal dominant.

synonyms

• Homocarnosinosis
• Homocarnosinase deficiency
• Serum carnosinase deficiency

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