Clinical and genetic analysis of Korean patients with congenital insensitivity to pain with anhidrosis.
Congenital insensitivity to pain with anhidrosis (CIPA) is a rare autosomal recessive disease characterized by anhidrosis, insensitivity to noxious stimuli, and mental retardation. Mutations in the NTRK1 gene are associated with the pathogenesis of CIPA. In this study, we performed a clinical and genetic analysis on the NTRK1 gene in four Korean patients with CIPA. All patients had typical clinical manifestations of CIPA, including anhidrosis, recurrent fever, absent pain perception, and developmental delay. Sequencing analysis revealed one predominant mutation, c.851-33T>A, in four affected alleles and three novel mutations, including c.287+2dupT, c.2155G>A (p.Glu719Lys), and c.1218delC (p.Pro407ArgfsX), in each affected allele. For one patient, who was heterozygous for c.851-33T>A, another mutation could not be identified, suggesting that a possible hidden intronic or large genomic mutation may have been present. This study extends the spectrum of mutations in the NTRK1 gene and confirms that Korean patients with CIPA have the same genetic background as other ethnicities.
Lee
Seung-Tae
ST
Department of Laboratory Medicine and Genetics, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Irwon-Dong, Gangnam-Gu, Seoul 135-710, Korea.
Lee
Jeehun
J
Lee
Munhyang
M
Kim
Jong-Won
JW
Ki
Chang-Seok
CS
D000595:Amino Acid Sequence / Q000235:genetics; D044466:Asian People / Q000235:genetics*; D002648:Child; D002675:Child, Preschool; D005260:Female; D009477:Hereditary Sensory and Autonomic Neuropathies / Q000175:diagnosis / Q000235:genetics*; D006801:Humans; D007007:Hypohidrosis / Q000175:diagnosis / Q000235:genetics*; D007223:Infant; D007723:Korea; D008297:Male; D008969:Molecular Sequence Data; D009154:Mutation / Q000235:genetics; D000699:Pain Insensitivity, Congenital / Q000175:diagnosis / Q000235:genetics*; D017433:Protein Structure, Secondary / Q000235:genetics; D020917:Receptor, trkA / Q000235:genetics
D020917:Receptor, trkA