hyperphosphatasia with mental retardation 1
hyperphosphatasia with mental retardation 1
An autosomal recessive condition OMIM:239300 characterised by elevated serum alkaline phosphatase, severe mental retardation, seizures, hypotonia, facial dysmorphism, and hypoplastic terminal phalanges.Molecular pathology Defects in PIGV, which encodes a mannosyltransferase involved in glycosylphosphatidylinositol-anchor biosynthesis, cause hyperphosphatasia with mental retardation type 1.