Mutation analysis and genotype/phenotype relationships of Gaucher disease patients in Spain.
Mutations in the glucocerebrosidase (GBA) gene cause Gaucher disease (GD). The aim of this study was to characterise the GBA mutations and analyze genotype/phenotype relationships in 193 unrelated patients from the Spanish GD Registry. We have identified 98.7% of the mutated GBA alleles, finding 56 different GBA mutations and 66 genotypes causing GD in Spain: 47 previously described mutations and 9 novel mutations (4 missense R395C, R463H, W312R and V398I, 1 nonsense R359X, 4 frameshift c.708delC, c.1214-1215delGC, c.1439-1445del7 and c.42-65del24). The most prevalent mutations were N370S and L444P, accounting for 68.7% of the mutated alleles. A wide phenotypic difference was observed within each genotypic group, and 9% of diagnosed type 1 patients developed neurological involvement including parkisonism, tremor, hypoacusia and eye movements. All of these findings indicate that there is a significant genotypic heterogeneity that explains the huge phenotypic variation among Spanish GD patients.
Alfonso
Pilar
P
Departamento de Bioquímica y Biología Molecular y Celular, Facultad Ciencias, Universidad de Zaragoza, Plaza San Francisco s/n, 50009, Zaragoza, Spain. palfonso@unizar.es.|Institute Aragones of Health Sciences (I+CS), Zaragoza, Spain. palfonso@unizar.es.
Aznarez
Sofía
S
Departamento de Bioquímica y Biología Molecular y Celular, Facultad Ciencias, Universidad de Zaragoza, Plaza San Francisco s/n, 50009, Zaragoza, Spain.|Institute Aragones of Health Sciences (I+CS), Zaragoza, Spain.
Giralt
Manuel
M
Miguel Servet University Hospital, Zaragoza, Spain.
Pocovi
Miguel
M
Departamento de Bioquímica y Biología Molecular y Celular, Facultad Ciencias, Universidad de Zaragoza, Plaza San Francisco s/n, 50009, Zaragoza, Spain.|Institute Aragones of Health Sciences (I+CS), Zaragoza, Spain.
Giraldo
Pilar
P
Institute Aragones of Health Sciences (I+CS), Zaragoza, Spain.|Miguel Servet University Hospital, Zaragoza, Spain.
D000293:Adolescent; D000328:Adult; D019943:Amino Acid Substitution; D002648:Child; D002675:Child, Preschool; D004252:DNA Mutational Analysis; D005776:Gaucher Disease / Q000097:blood / Q000235:genetics*; D017353:Gene Deletion; D005838:Genotype; D005962:Glucosylceramidase / Q000235:genetics*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D010641:Phenotype; D013030:Spain
D005962:Glucosylceramidase