Identification of novel variants of and genes in xeroderma pigmentosum patients in Vietnam.

Xeroderma pigmentosum (XP) disorder is recognized as a genetic condition inherited by autosomal recessive fashion. XP results from a defective DNA repair mechanism that significantly increases skin cancer risk. Fifteen Vietnamese patients were investigated with typical clinical manifestations of XP.

Genetic analyses of Vietnamese patients with oculocutaneous albinism.

Background: Oculocutaneous albinism (OCA) is an autosomal recessive disease with hypopigmentation in skin, hair, and eyes, causing by the complete absence or reduction of melanin in melanocytes. Many types of OCA were observed based on the mutation in different causing genes relating to albinism. OCA can occur in non-syndromic and syndromic forms, where syndromic OCA coexists with additional systemic consequences beyond hypopigmentation and visual-associated symptoms.

Novel and very rare causative variants in the COL7A1 gene of Vietnamese patients with recessive dystrophic epidermolysis bullosa revealed by whole-exome sequencing.

Background: Dystrophic epidermolysis bullosa (DEB) is a rare inherited disorder characterized by skin fragility leading to trauma-induced subepidermal blisters and healing with scarring. DEB is caused by mutations in COL7A1, the gene encoding for type VII collagen (COLVII). The DEB inheritance trait is divided into dominant dystrophic epidermolysis bullosa (DDEB) and recessive dystrophic epidermolysis bullosa (RDEB).