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Prevalence of clinical parameters (%)
Add new symptom/sign to this disease
List of symptoms
List of references:
New Alström syndrome phenotypes based on the evaluation of 182 cases.
Jan D Marshall, Roderick T Bronson, Gayle B Collin, Anne D Nordstrom, Pietro Maffei, Richard B Paisey, Catherine Carey, Seamus Macdermott, Isabelle Russell-Eggitt, Sarah E Shea, Judy Davis, Sebastian Beck, Gocha Shatirishvili, Cristina Maria Mihai, Maria Hoeltzenbein, Giovanni Battista Pozzan, Ian Hopkinson, Nicola Sicolo, Jürgen K Naggert, Patsy M Nishina,
Alström syndrome is a recessively inherited genetic disorder characterized by congenital retinal dystrophy that leads to blindness, hearing impairment, childhood obesity, insulin resistance, and type 2 diabetes mellitus. We provide new details on cardiologic, hepatic, gastrointestinal, urologic, pulmonary, and neurobehavioral phenotypes in Alström syndrome and describe the histopathologic findings in 5 individuals.
Archives of internal medicine - Mar 2005
Spectrum of ALMS1 variants and evaluation of genotype-phenotype correlations in Alström syndrome.
Jan D Marshall, Elizabeth G Hinman, Gayle B Collin, Sebastian Beck, Rita Cerqueira, Pietro Maffei, Gabriella Milan, Weidong Zhang, David I Wilson, Tom Hearn, Purificação Tavares, Roberto Vettor, Caterina Veronese, Mitchell Martin, W Venus So, Patsy M Nishina, Jürgen K Naggert,
Alström syndrome is a monogenic recessive disorder featuring an array of clinical manifestations, with systemic fibrosis and multiple organ involvement, including retinal degeneration, hearing loss, childhood obesity, diabetes mellitus, dilated cardiomyopathy (DCM), urological dysfunction, and pulmonary, hepatic, and renal failure. We evaluated a large cohort of patients with Alström syndrome for mutations in the ALMS1 gene. In total, 79 disease-causing variants were identified, of which 55 are novel mutations. The variants are primarily clustered in exons 8, 10, and 16, although we also identified novel mutations in exons 12 and 18. Most alleles were identified only once (45/79), but several were found recurrently. Founder effects are likely in families of English and Turkish descent. We also identified 66 SNPs and assessed the functional significance of these variants based on the conserved identity of the protein and the severity of the resulting amino acid substitution. A genotype-phenotype association study examining 18 phenotypic parameters in a subset of 58 patients found suggestive associations between disease-causing variants in exon 16 and the onset of retinal degeneration before the age of 1 year (P = 0.02), the occurrence of urological dysfunction (P = 0.02), of DCM (P = 0.03), and of diabetes (P = 0.03). A significant association was found between alterations in exon 8 and absent, mild, or delayed renal disease (P = 0.0007). This data may have implications for the understanding of the molecular mechanisms of ALMS1 and provides the basis for further investigation of how alternative splicing of ALMS1 contributes to the severity of the disease.
Human mutation - Nov 2007
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