U.S. flag

An official website of the United States government

GTR Home > Conditions/Phenotypes > Muscular dystrophy-dystroglycanopathy (congenital with brain and eye anomalies), type A13

Summary

Congenital muscular dystrophy-dystroglycanopathy with brain and eye anomalies (type A) is a autosomal recessive disorder associated with severe neurologic defects and resulting in early infantile death. The phenotype includes the alternative clinical designations Walker-Warburg syndrome (WWS) and muscle-eye-brain disease (MEB). The disorder represents the most severe end of a phenotypic spectrum of similar disorders resulting from defective glycosylation of alpha-dystroglycan (DAG1; 128239), collectively known as dystroglycanopathies (summary by Buysse et al., 2013). For a general phenotypic description and a discussion of genetic heterogeneity of muscular dystrophy-dystroglycanopathy type A, see MDDGA1 (236670). [from OMIM]

Genes See tests for all associated and related genes

  • Also known as: B3GN-T1, B3GNT1, B3GNT6, BETA3GNTI, MDDGA13, iGAT, iGNT, B4GAT1
    Summary: beta-1,4-glucuronyltransferase 1

Clinical features

Help

Show allHide all

IMPORTANT NOTE: NIH does not independently verify information submitted to the GTR; it relies on submitters to provide information that is accurate and not misleading. NIH makes no endorsements of tests or laboratories listed in the GTR. GTR is not a substitute for medical advice. Patients and consumers with specific questions about a genetic test should contact a health care provider or a genetics professional.