Friedreich Ataxia (Fa) Associated with Diabetes Mellitus Type 1 and Hyperthrophic Cardiomyopathy

  • Zoran Gucev Faculty of Medicine Skopje, St. Cyril and Methodius University
  • Velibor Tasic Faculty of Medicine Skopje, St. Cyril and Methodius University
  • Aleksandra Jancevska Faculty of Medicine Skopje, St. Cyril and Methodius University
  • Nada Popjordanova Faculty of Medicine Skopje, St. Cyril and Methodius University
  • Svetlana Koceva Faculty of Medicine Skopje, St. Cyril and Methodius University
  • Marija Kuturec Faculty of Medicine Skopje, St. Cyril and Methodius University
  • Vesna Sabolic Faculty of Medicine Skopje, St. Cyril and Methodius University
Keywords: Friedreich ataxia, diabetes mellitus type 1, hyperthrophic cardiomyopathy, siblings

Abstract

Progressive signs of ataxia in a eight years old girl prompted neurological investigation. The girl had unstable gait with incoordination of limb movements, impairment of position and vibratory senses, dysarthria, pes cavus, positive Babinski sign and scoliosis. At the age of fourteen the girl was referred in a comatose condition, in a severe diabetic ketoacidosis. Ataxia and hypoactive knee and ankle jerks prompted the analysis of the frataxin gene (FXN; 606829). The most common molecular abnormality: GAA trinucleotide repeat expansion in intron 1 was found with + 300 GAA repeats (1490bp) (normal individuals have 5 to 30 GAA repeat expansions, whereas affected individuals have from 70 to more than 1,000 GAA triplets). Electrocardiogram showed diffuse T wave inversion with sinus bradycardia, while ultrasound revealed concentric, symmetric hypertrophy of left ventricle leading to the diagnosis of hyperthrophic cardiomyopathy. At the age of 14 years, the patient was bound to the wheel-chair, unable to walk. Her brother started to show ataxia at the age of 8 years, and subsequent analysis showed hyperthrophic cardiomyopathy, too. His mutational analysis revealed the same frataxin abnormality, with + 300 GAA repeats. So far, no signs of diabetes occurred. The parents are heterozygous with FXN of 9 -10 GAA (490 bp). Both children received a beta blocker, while the girl’s diabetes mellitus was treated by insulin preparations. This is a report of two siblings with Fridreich ataxia and hyperthrophic cardiomyopathy. In addition, the girl developed type 1 diabetes mellitus.

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Friedreich Ataxia (Fa) Associated with Diabetes Mellitus Type 1 and Hyperthrophic Cardiomyopathy
Published
2009-05-20
How to Cite
1.
Gucev Z, Tasic V, Jancevska A, Popjordanova N, Koceva S, Kuturec M, Sabolic V. Friedreich Ataxia (Fa) Associated with Diabetes Mellitus Type 1 and Hyperthrophic Cardiomyopathy. Bosn J of Basic Med Sci [Internet]. 2009May20 [cited 2020Sep.28];9(2):107-10. Available from: https://www.bjbms.org/ojs/index.php/bjbms/article/view/2828
Section
Translational and Clinical Research