RGD Reference Report - A homozygous FKRP start codon mutation is associated with Walker-Warburg syndrome, the severe end of the clinical spectrum. - Rat Genome Database
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A homozygous FKRP start codon mutation is associated with Walker-Warburg syndrome, the severe end of the clinical spectrum.

Authors: Van Reeuwijk, J  Olderode-Berends, M J W  Van den Elzen, C  Brouwer, O F  Roscioli, T  Van Pampus, M G  Scheffer, H  Brunner, H G  Van Bokhoven, H  Hol, F A 
Citation: Van Reeuwijk J, etal., Clin Genet. 2010 Sep;78(3):275-81. doi: 10.1111/j.1399-0004.2010.01384.x. Epub 2010 Feb 11.
RGD ID: 11667969
Pubmed: (View Article at PubMed) PMID:20236121
DOI: Full-text: DOI:10.1111/j.1399-0004.2010.01384.x

Dystroglycanopathies are a heterogeneous group of disorders caused by defects in the glycosylation pathway of alpha-dystroglycan. The clinical spectrum ranges from severe congenital muscular dystrophy with structural brain and eye involvement to a relatively mild adult onset limb-girdle muscular dystrophy without brain abnormalities and normal intelligence. Mutations have been identified in one of six putative or demonstrated glycosyltransferases. Many different FKRP mutations have been identified, which cover the complete clinical spectrum of dystroglycanopathies. In contrast to the other known genes involved in these disorders, genotype-phenotype correlations are not obvious for FKRP mutations. To date, no homozygous or compound heterozygous null mutations have been identified in FKRP, suggesting that null mutations in FKRP could result in embryonic lethality. We report a family with two siblings carrying a homozygous mutation in the start codon of FKRP that is likely to result in a loss of functional FKRP protein. The clinical phenotype of the patients was consistent with Walker-Warburg syndrome, the most severe disorder in the disease spectrum of dystroglycanopathies.

Annotation

Disease Annotations    

Phenotype Annotations    

Human Phenotype
Hydrocephalus  (IAGP)
Objects Annotated

Genes (Rattus norvegicus)
Fkrp  (fukutin related protein)

Genes (Mus musculus)
Fkrp  (fukutin related protein)

Genes (Homo sapiens)
FKRP  (fukutin related protein)


Additional Information