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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
5
pubmed:dateCreated
2008-10-31
pubmed:abstractText
Deoxycytidine kinase (dCK) is a rate-limiting enzyme in the activation of nucleoside anticancer drugs, such as gemcitabine and cytarabine (Ara-C), to their active metabolites. In this study, the 5'-flanking region, 7 exons and their flanking introns of DCK were comprehensively screened for genetic variations in 256 Japanese cancer patients administered gemcitabine. Twenty-nine genetic variations, including twenty novel ones, were found: 11 in the 5'-flanking region, 1 in the 5'-untranslated region (UTR), 1 in the coding exon, 9 in the 3'-UTR, and 7 in the introns. The novel variations included -1110C>T, -757G>A, -639C>T, -465G>A, -402T>C, -224C>A, -199C>G, IVS1+38G>T, IVS2+78_+83delTTTTTC, IVS3-9C>T, IVS4+12T>C, IVS5+39T>C, 1357A>G, 1545A>T, 1572delA, 1736G>A, 1749G>A, 1838T>C, 1889G>A, and 2048A>T. The frequencies were 0.01 for IVS2+78_ +83delTTTTTC, 0.008 for -402T>C, 0.006 for -639C>T and IVS4+12T>C, 0.004 for -757G>A and 1572delA, and 0.002 for the other 14 variations. A known nonsynonymous SNP 364C>T (Pro122Ser) was detected at a 0.061 frequency. Using the detected polymorphisms, linkage disequilibrium analysis was performed, and 24 haplotypes were identified or inferred. Our findings suggest considerable ethnic differences in genetic variations of DCK and provide fundamental and useful information for genotyping DCK in the Japanese and probably other Asian populations.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:issn
1880-0920
pubmed:author
pubmed:issnType
Electronic
pubmed:volume
23
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
379-84
pubmed:meshHeading
pubmed:year
2008
pubmed:articleTitle
Twenty novel genetic variations and haplotype structures of the DCK gene encoding human deoxycytidine kinase (dCK).
pubmed:affiliation
Project Team for Pharmacogenetics, National Institute of Health Sciences, Tokyo, Japan. kim@nihs.go.jp
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't