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Considering the clinical vignette from the prior week (elderly male with proximal muscle weakness). Staining the skeletal muscle biopsy with Hematoxylin and Eosin (H&E) in combination with frozen sections evaluated with Modified Gomori Trichrome (MGT) and oxidative stains, as well as electron microscopy, demonstrated findings diagnostic of myopathy with tubular aggregates (TAM). See the images. Mutation in which of the following genes is associated with myopathy with tubular aggregates? Frozen tissue section of skeletal muscle with Tubular Aggregate Myopathy (TAM) demonstrating two adjacent muscle fibers with round to ovoid eccentric and subsarcolemmal inclusion-type material with dense granular basophilic (blue)...