Differential termination of primer extension: a novel, quantifiable method for detection of point mutations.
We have developed a novel technique that is useful for the rapid detection of previously characterized point mutations in the human genome. The method relies on the differential termination of primer extension being performed simultaneously on normal and mutant template molecules in the presence of a selectively limited complement of deoxynucleotide triphosphates. We have used this technique to determine the carrier status of two potential carriers of a hemophilia B mutation at codon 145 in the factor IX gene. In addition, the technique has been used to quantify the levels of mutant sequence in several tissues of a hemophilia B patient who is a somatic mosaic for a point mutation at codon 350.
Picketts
D J
DJ
Department of Pathology, Richardson Laboratory, Queen's University, Kingston, Ontario, Canada.
Cameron
C
C
Taylor
S A
SA
Deugau
K V
KV
Lillicrap
D P
DP
D001483:Base Sequence; D005164:Factor IX / Q000235:genetics*; D005260:Female; D006580:Genetic Carrier Screening / Q000379:methods*; D002836:Hemophilia B / Q000235:genetics*; D006801:Humans; D008297:Male; D008969:Molecular Sequence Data; D009154:Mutation / Q000235:genetics*; D009838:Oligodeoxyribonucleotides / Q000235:genetics; D016133:Polymerase Chain Reaction
D009838:Oligodeoxyribonucleotides; D005164:Factor IX