SQSTM1 and frontotemporal dementia: sIBM generally shows CD8+ T cells invasion of non-necrotic muscle fibers, incremented expression of MHC class I, rimmed vacuoles, and protein aggregates which could contain, among others, beta amyloid protein, p62 and TDP-43, like those found in Alzheimer’s disease, in amyotrophic lateral sclerosis and frontotemporal dementia [171,172].