title: Clinical and genetic analysis of a Korean patient with X-linked chondrodysplasia punctata: identification of a novel splicing mutation in the ARSE gene.
abstract: X-linked recessive chondrodysplasia punctata (CDPX1) is a rare congenital disorder of bone and cartilage development, characterized by punctate calcification in areas of endochondral bone formation, leading to stippled epiphyses, severe nasal and midfacial hypoplasia, short stature, and brachytelephalangy. CDPX1 is caused by mutations in the arylsulfatase E (ARSE) gene located on chromosome Xp22.3. Although most affected males have milder symptoms, some have significant medical problems including respiratory compromise and cervical spinal stenosis due to dysplastic vertebrae. Herein, we present the case of a male infant with the characteristic features of CDPX1 and severe spinal cord compression. Direct sequencing analysis revealed a novel variation (c.430G>A) in the ARSE gene that was thought to be a missense mutation (p.Gly144Arg), but proved to be a novel splicing mutation (r.[430g>a; 430_431ins430+1_430+21) adding seven amino acids between p.Ile143 and p.Gly144 (p.Ile143_Gly-144insSerMetTyrValPheLysSer). This report expands the spectrum of mutations of the ARSE gene and, to the best of our knowledge, is the first clinically and genetically confirmed case of CDPX1 with severe spinal cord compression in Korea.
authors: Department of Pediatrics, Busan Paik Hospital, Inje University College of Medicine, Busan, Korea.
authors: Ga Won
authors: GW
authors: Jeon
authors: Min-Jung
authors: MJ
authors: Kwon
authors: Sun Joo
authors: SJ
authors: Lee
authors: Jong Beom
authors: JB
authors: Sin
authors: Chang-Seok
authors: CS
authors: Ki
mesh_terms: D000328:Adult; D001192:Arylsulfatases / Q000235:genetics*; D044466:Asian People / Q000235:genetics*; D001483:Base Sequence; D002806:Chondrodysplasia Punctata / Q000235:genetics*; D004252:DNA Mutational Analysis; D005260:Female; D040181:Genetic Diseases, X-Linked / Q000235:genetics*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008969:Molecular Sequence Data; D009154:Mutation / Q000235:genetics*; D011247:Pregnancy; D012326:RNA Splicing / Q000235:genetics*; D056910:Republic of Korea
chemical_list: C110155:ARSL protein, human; D001192:Arylsulfatases