found to be associated with hereditary inclusion body myopathy, Paget disease of the bone,
and frontotemporal dementia (IBMPFD). We identified a novel missense mutation in the VCP
gene (R159H; 688G> A) segregating with this disease in an Austrian family of four affected
siblings, who exhibited progressive proximal myopathy and Paget disease of the bone but
without clinical signs of dementia.