GNE myopathy is a rare autosomal recessive adult-onset distal myopathy caused by biallelic pathogenic variants in GNE. Although some complications associated with GNE myopathy have been reported, little is known about whether they are disease-specific and how often they present. This study aimed to characterize complications of GNE myopathy.
We conducted a questionnaire survey of GNE myopathy patients registered in a national registry in Japan. The questionnaire requested information regarding immune thrombocytopenia (ITP), cardiac involvement, respiratory involvement, sleep apnea syndrome (SAS), and psychiatric diseases.
The response rate was 62.4% (126/198), yielding a total of 51 male and 75 female participants. Of the participants, 4.1% (5/123) had a diagnosis of ITP, and 16.3% (8/49) of males and 6.6% of females (5/76) had a diagnosis of SAS. In total, 0.8% (1/126) of participants had pervasive developmental disorder and 14.7% (16/109) had a psychiatric disease.
The frequencies of ITP and SAS among Japanese GNE myopathy patients were higher than those observed in the general Japanese population. Routine blood tests and evaluation of sleep-disordered breathing should be considered in order to better manage GNE myopathy patients.

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This is a list of supplementary files associated with this preprint. Click to download.
Questionnaire used in the survey
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Posted 07 Jan, 2021
Posted 07 Jan, 2021
GNE myopathy is a rare autosomal recessive adult-onset distal myopathy caused by biallelic pathogenic variants in GNE. Although some complications associated with GNE myopathy have been reported, little is known about whether they are disease-specific and how often they present. This study aimed to characterize complications of GNE myopathy.
We conducted a questionnaire survey of GNE myopathy patients registered in a national registry in Japan. The questionnaire requested information regarding immune thrombocytopenia (ITP), cardiac involvement, respiratory involvement, sleep apnea syndrome (SAS), and psychiatric diseases.
The response rate was 62.4% (126/198), yielding a total of 51 male and 75 female participants. Of the participants, 4.1% (5/123) had a diagnosis of ITP, and 16.3% (8/49) of males and 6.6% of females (5/76) had a diagnosis of SAS. In total, 0.8% (1/126) of participants had pervasive developmental disorder and 14.7% (16/109) had a psychiatric disease.
The frequencies of ITP and SAS among Japanese GNE myopathy patients were higher than those observed in the general Japanese population. Routine blood tests and evaluation of sleep-disordered breathing should be considered in order to better manage GNE myopathy patients.

Figure 1

Figure 2
This is a list of supplementary files associated with this preprint. Click to download.
Questionnaire used in the survey
Loading...