A number of rare genetic defects such as xeroderma pigmentosum also increase risk. وهناك عدد من العيوب الوراثية النادرة مثل جفاف الجلد المصبغ يزيد أيضا من المخاطر.
تعريف الإنجليزية
a rare genetic condition characterized by an eruption of exposed skin occurring in childhood and photosensitivity with severe sunburn; inherited as a recessive autosomal trait in which DNA repair processes are defective so they are more likely to chromosome breaks and cancers when exposed to ultraviolet light