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Undetected neuromuscular disease in patients after heart transplantation

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Item Type:Article
Title:Undetected neuromuscular disease in patients after heart transplantation
Creators Name:Bekele, B.M., Gazzerro, E., Schoenrath, F., Falk, V., Rost, S., Hoerning, S., Jelting, Y., Zaum, A.K., Spuler, S. and Knierim, J.
Abstract:(1) Heart transplantation (HTX) improves the overall survival and functional status of end-stage heart failure patients with cardiomyopathies (CMPs). The majority of CMPs have genetic causes, and the overlap between CMPs and inherited myopathies is well documented. However, the long-term outcome in skeletal muscle function and possibility of an undiagnosed underlying genetic cause of both a cardiac and skeletal pathology remain unknown. (2) Thirty-nine patients were assessed using open and standardized interviews on muscle function, a quality-of-life (EuroQol EQ-5D-3L) questionnaire, and a physical examination (Medical Research Council Muscle scale). Whole-exome sequencing was completed in three stages for those with skeletal muscle weakness. (3) Seven patients (17.9%) reported new-onset muscle weakness and motor limitations. Objective muscle weakness in the upper and lower extremities was seen in four patients. In three of them, exome sequencing revealed pathogenic/likely pathogenic variants in the genes encoding nexilin, myosin heavy chain, titin, and SPG7. (4) Our findings support a positive long-term outcome of skeletal muscle function in HTX patients. However, 10% of patients showed clinical signs of myopathy due to a possible genetic cause. The integration of genetic testing and standardized neurological assessment of motor function during the peri-HTX period should be considered.
Keywords:Heart Transplantation, Skeletal Muscle Weakness, Cardiomyopathy, Nexilin, Myosin Heavy Chain 7, Titin
Source:International Journal of Molecular Sciences
ISSN:1422-0067
Publisher:MDPI
Volume:25
Number:14
Page Range:7819
Number of Pages:1
Date:17 July 2024
Official Publication:https://doi.org/10.3390/ijms25147819

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