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Knobloch syndrome

Synonyms
Myopia retinal detachment encephalocele; RETINAL DETACHMENT AND OCCIPITAL ENCEPHALOCELE
Modes of inheritance
Autosomal recessive inheritance (Orphanet)

Summary

Knobloch syndrome is defined by vitreoretinal and macular degeneration, and occipital encephalocele. The disease has characteristics of early-onset severe myopia (usually becoming apparent in the first year of life), vitreoretinal degeneration with retinal detachment, macular abnormalities, and midline encephalocele (mainly in the occipital region). The syndrome is clinically and genetically heterogeneous with three forms, KNO1, KNO2 and KNO3, being defined. KNO1 is caused by inactivating mutations in the collagen XVIII/endostatin gene (COL18A1) mapped to 21q22.3. The KNO2 form was defined when linkage to the KNO1 locus was excluded in a family reported from New Zealand. Recently, a novel type of KS (KNO3) was mapped to chromosome 17q11.2. Inherited as an autosomal recessive trait. [from SNOMEDCT_US]

Available tests

33 tests are in the database for this condition.

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Clinical tests (33 available)

Molecular Genetics Tests

Genes See tests for all associated and related genes

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