COL7A1 and recessive dystrophic epidermolysis bullosa: According to the patient’s previous genetic sequencing (supplied by the Beijing Kangso Medical Inspection), he had COL7A1:DEB, Bart-type non-specific epidermolysis bullosa (detection gene: COL7A1 [type VII collagen gene], position: chr3:48606879, variation: c.7012C>T and c.7615G>T, variation type: heterozygous), which belongs to an extremely rare autosomal recessive genetic dystrophy type of epidermolysis bullosa (RDEB).