?:definition
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A deviation from the normal amount of lamin A/C in muscle tissue. The LMNA gene gives rise to at least three splicing isoforms including the two main isoforms, lamin A and lamin C. These are constitutive components of the fibrous nuclear lamina and have different roles, ranging from mechanical nuclear membrane maintenance to gene regulation. [HPO:probinson, PMID:24843229]
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