Skin damage in a patient with lipid storage myopathy with a novel ETFDH mutation responsive to riboflavin

Abstract

Background: Recessive mutations in ETFDH gene have been associated with Multiple Acyl-CoA dehydrogenase deficiency (MADD). The late-onset MADD is often muscle involved, presenting with lipid storage myopathy (LSM). The symptoms of LSM were heterogeneous and definite diagnosis of this disease depends on the pathology and gene test.

Methods: Neurological examination, muscle biopsy, and MRI examinations were performed in a patient with a novel missense ETFDH mutation.

Results: We describe a patient with lipid storage myopathy complicated with skin damage. In addition, the next generation revealed a novel missense mutation (c.970G > T, p.Val324Leu) in exon 8, which was predicted to be a disease-causing mutation by Mutation-taster, and destroy the function of the protein by Sift.

Conclusion: These findings expand the known mutational spectrum of ETFDH and phenotype of MADD.

Keywords:

• Lipid storage myopathy
• electron transfer flavoprotein dehydrogenase
• multiple acyl-CoA dehydrogenase deficiency

Acknowledgements

We sincerely thank the participants for their cooperation and willingness to participate in this study and the anonymous reviewers that helped improve this manuscript.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

This work was supported by the following grants: The Young Scientists Fund of the National Natural Science Foundation of China (Grant No. 81601093); The Young Scientists Fund of the First Affiliated Hospital of Zhengzhou University (2015, Director: Hongliang Xu).