Molecular analysis of myophosphorylase deficiency in Dutch patients with McArdle's disease. 2004

M A Martín, and J C Rubio, and R A Wevers, and B G M Van Engelen, and G C H Steenbergen, and O P Van Diggelen, and M De Visser, and C De Die-Smulders, and A Blázquez, and A L Andreu, and J Arenas
Centro de Investigación, Hospital Universitario 12 de Octubre, Madrid, Spain.

We report on 8 Dutch patients with McArdle's disease from 6 unrelated families. Molecular analysis revealed the presence of four previously described mutations: the common R49X mutation, the IVS14+1G>A mutation and the recently reported R269X and Y84X nonsense mutations; and two new molecular defects: a missense mutation R138W in the homozygous state in two siblings, and a frameshift mutation c.1797delT. This first genetic study of patients from The Netherlands with McArdle's disease confirms that the R49X mutation is also the most common in Dutch patients, and that there is genetic heterogeneity within this population. Moreover, our data support the hypothesis that the Y84X mutation is a relatively frequent mutation in McArdle's patients with a Central European background, and expand the already crowded map of mutations within the PYGM gene responsible for McArdle's disease.

UI MeSH Term Description Entries
D008297 Male Males
D009154 Mutation Any detectable and heritable change in the genetic material that causes a change in the GENOTYPE and which is transmitted to daughter cells and to succeeding generations. Mutations
D009426 Netherlands Country located in EUROPE. It is bordered by the NORTH SEA, BELGIUM, and GERMANY. Constituent areas are Aruba, Curacao, and Sint Maarten, formerly included in the NETHERLANDS ANTILLES. Holland,Kingdom of the Netherlands
D005260 Female Females
D006012 Glycogen Storage Disease Type V Glycogenosis due to muscle phosphorylase deficiency. Characterized by painful cramps following sustained exercise. Glycogenosis 5,McArdle's Disease,Deficiency, Muscle Phosphorylase,Glycogen Storage Disease Type 5,Glycogen Storage Disease V,McArdle Disease,McArdle Type Glycogen Storage Disease,Mcardle Syndrome,Muscle Glycogen Phosphorylase Deficiency,Muscle Phosphorylase Deficiency,Myophosphorylase deficiency,PYGM Deficiency,Deficiencies, Muscle Phosphorylase,Deficiencies, PYGM,Deficiency, PYGM,Disease, McArdle,Disease, McArdle's,Glycogenosis 5s,McArdles Disease,Mcardle Syndromes,Muscle Phosphorylase Deficiencies,Myophosphorylase deficiencies,PYGM Deficiencies,Phosphorylase Deficiencies, Muscle,Phosphorylase Deficiency, Muscle,Syndrome, Mcardle,Syndromes, Mcardle,deficiencies, Myophosphorylase,deficiency, Myophosphorylase
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D001483 Base Sequence The sequence of PURINES and PYRIMIDINES in nucleic acids and polynucleotides. It is also called nucleotide sequence. DNA Sequence,Nucleotide Sequence,RNA Sequence,DNA Sequences,Base Sequences,Nucleotide Sequences,RNA Sequences,Sequence, Base,Sequence, DNA,Sequence, Nucleotide,Sequence, RNA,Sequences, Base,Sequences, DNA,Sequences, Nucleotide,Sequences, RNA
D017931 DNA Primers Short sequences (generally about 10 base pairs) of DNA that are complementary to sequences of messenger RNA and allow reverse transcriptases to start copying the adjacent sequences of mRNA. Primers are used extensively in genetic and molecular biology techniques. DNA Primer,Oligodeoxyribonucleotide Primer,Oligodeoxyribonucleotide Primers,Oligonucleotide Primer,Oligonucleotide Primers,Primer, DNA,Primer, Oligodeoxyribonucleotide,Primer, Oligonucleotide,Primers, DNA,Primers, Oligodeoxyribonucleotide,Primers, Oligonucleotide
D018740 Genetic Heterogeneity The presence of apparently similar characters for which the genetic evidence indicates that different genes or different genetic mechanisms are involved in different pedigrees. In clinical settings genetic heterogeneity refers to the presence of a variety of genetic defects which cause the same disease, often due to mutations at different loci on the same gene, a finding common to many human diseases including ALZHEIMER DISEASE; CYSTIC FIBROSIS; LIPOPROTEIN LIPASE DEFICIENCY, FAMILIAL; and POLYCYSTIC KIDNEY DISEASES. (Rieger, et al., Glossary of Genetics: Classical and Molecular, 5th ed; Segen, Dictionary of Modern Medicine, 1992) Heterogeneity, Genetic,Genetic Heterogeneities,Heterogeneities, Genetic
D024982 Glycogen Phosphorylase, Muscle Form An isoenzyme of GLYCOGEN PHOSPHORYLASE that catalyzes the degradation of GLYCOGEN in muscle. Mutation of the gene coding this enzyme is the cause of McArdle disease (GLYCOGEN STORAGE DISEASE TYPE V). Myophosphorylase,Glycogen Phosphorylase a, Muscle Form,Glycogen Phosphorylase b, Muscle Form,Myophosphorylase a and b

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