VCP and inclusion body myopathy with Paget disease of bone and frontotemporal dementia: VCP/p97 mutations have been associated with a multisystem degenerative disease that comprises Paget's disease of bone, inclusion body myopathy, and fronto-temporal dementia (IBMPFD), and with several other diseases of the nervous and muscular system [[23], [24], [25], [26], [27], [28]].