mutations

Two newly identified mutations in the GAA gene, along with a previously known variant of unclear significance, were found to reduce the activity of the enzyme whose deficiency causes Pompe disease, a study has shown. The three variants appeared to produce unstable forms of the enzyme that were prone…

The prevalence of late-onset Pompe disease (LOPD) in people across the U.S. and in Montreal, Canada, who lack an official diagnosis but have its characteristic neuromuscular symptoms — including neck and proximal muscle weakness or elevated creatine kinase levels (a marker of muscle damage)…

A better understanding of Pompe disease-causing genetic mutations may help with early treatment intervention, even if symptoms are subtle, a small Hungarian study suggests. Researchers found that the precise localization of a mutation determines the impact on GAA enzyme activity, which in turn has been associated with disease onset.

Four new mutations in the GAA gene have been identified in a group of people with late-onset Pompe disease (LOPD), according to a study in Spain. The study “Genotype–phenotype correlation of 17 cases of Pompe disease in Spanish patients and identification of 4 novel GAA variants” was published in the Orphanet…

Two novel mutations in the GAA gene were linked with cerebral stroke in two siblings with late-onset Pompe disease (PD), a study from China reports. The study, “GAA compound heterozygous mutations associated with autophagic impairment cause cerebral infarction in Pompe disease,” was published in the journal…

The discovery of a new combination of mutations causing infantile-onset Pompe disease, described in a case report, highlights the importance of screening for early detection of the rare genetic disorder. A sensitive and inexpensive screening system could improve the prognosis of infants with Pompe disease (PD), the researchers…