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GNE myopathy in the bedouin population of Kuwait: Genetics, prevalence, and clinical description
Author(s) -
Alrohaif Hadil,
Pogoryelova Oksana,
AlAjmi Abdullah,
Aljeryan Lulwa A.,
Alrashidi Nuwayer H.,
Alefasi Sara A.,
Urtizberea Andoni,
Lochmüller Hanns,
Bastaki Laila
Publication year - 2018
Publication title -
muscle and nerve
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.025
H-Index - 145
eISSN - 1097-4598
pISSN - 0148-639X
DOI - 10.1002/mus.26337
Subject(s) - myopathy , wasting , medicine , mutation , population , age of onset , disease , pediatrics , genetics , gene , biology , environmental health
ABSTRACT Introduction : GNE myopathy is a rare recessive myopathy caused by mutations in the GNE gene. It is mainly a distal myopathy with relative sparing of the quadriceps muscle. Methods : Patients with distal myopathies from Kuwait were examined and tested for the Middle Eastern GNE gene founder mutation, p.M743T. Patients were further studied for disease‐associated features. Results : GNE myopathy was confirmed in 14 of the 37 patients (37.8%) screened. All cases were caused by the p.M743T mutation. Age of onset and time from disease onset to loss of ambulation were variable. Both wasted and hypertrophied calf muscles were noted. Severely affected quadriceps were present in 1 patient, and ptosis, ophthalmoplegia, and tongue wasting in another. Discussion : The scope of the p.M743T mutation now includes the Arabian Peninsula. Variations in age of onset, disease progression, and distribution in patients harboring the same mutation suggest the role of other genetic‐ and environment‐modifying factors. Muscle Nerve 58 : 700–707, 2018