Analysis of PRSS1 and SPINK1 mutations in Korean patients with idiopathic and familial pancreatitis.
OBJECTIVE
PRSS1 and SPINK1 are 2 important genes in the defense mechanism guarding against the development of pancreatitis. This study aimed to evaluate the prevalence of PRSS1 and SPINK1 mutations and to explore the presence of any ethnic specificity in Korean patients.


METHODS
A total of 47 patients from 40 families including 37 patients with idiopathic pancreatitis and 10 patients with familial pancreatitis were prospectively enrolled. Fifty healthy controls were included for analysis of SPINK1 IVS3+2T site.


RESULTS
PRSS1 mutations were observed in 6 patients from 2 families and SPINK1 mutations in 13 patients from 11 families, respectively. In case of SPINK1 mutations, N34S and IVS3+2T>C were identified in 3 and 11 patients, respectively, including one with compound N34S/IVS3+2T>C heterozygote. The prevalence of SPINK1 IVS3+2T>C mutations was 26.8% among 41 patients without PRSS1 mutations, whereas the prevalence among 50 healthy controls was 0%. Only PRSS1 R122H was identified. Late onset of symptoms at the age of 36 years and absence of symptoms at the age of 47 years were observed in 2 patients with PRSS1 mutations.


CONCLUSIONS
PRSS1 and SPINK1 mutations were not rare in Korean patients with idiopathic and familial pancreatitis. SPINK1 IVS3+2T>C was a prevalent mutation in this population.
Department of Gastroenterology, Chung-Ang University College of Medicine, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea.
Hyoung-Chul
HC
Oh
Myung-Hwan
MH
Kim
Kwi-Sook
KS
Choi
Sung-Hoon
SH
Moon
Do Hyun
DH
Park
Sang Soo
SS
Lee
Dong Wan
DW
Seo
Sung Koo
SK
Lee
Han Wook
HW
Yoo
Goo Hwan
GH
Kim
D000293:Adolescent; D000328:Adult; D002352:Carrier Proteins / Q000235:genetics*; D002648:Child; D019005:Cystic Fibrosis Transmembrane Conductance Regulator / Q000235:genetics; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009154:Mutation; D010195:Pancreatitis / Q000235:genetics*; D014357:Trypsin; D014359:Trypsin Inhibitor, Kazal Pancreatic; D014362:Trypsinogen / Q000235:genetics*
C505032:CFTR protein, human; D002352:Carrier Proteins; C486642:SPINK1 protein, human; D019005:Cystic Fibrosis Transmembrane Conductance Regulator; D014359:Trypsin Inhibitor, Kazal Pancreatic; D014362:Trypsinogen; C489303:PRSS1 protein, human; D014357:Trypsin