Any amyotrophic lateral sclerosis in which the cause of the disease is a mutation in the VCP gene. The disease is Monarch Disease Ontology entry MONDO_0013501 (frontotemporal dementia and/or amyotrophic lateral sclerosis 6). Also known as: VCP amyotrophic lateral sclerosis, amyotrophic lateral sclerosis caused by mutation in VCP, amyotrophic lateral sclerosis, with or without frontotemporal dementia.