Any xeroderma pigmentosum in which the cause of the disease is a mutation in the ERCC4 gene. The disease is MONDO_0010215 (xeroderma pigmentosum group F). Also known as: ERCC4 xeroderma pigmentosum, XP group F, XP, group F, XP-F, XP6, XPF, xeroderma pigmentosum VI, xeroderma pigmentosum caused by mutation in ERCC4.