A novel PCR-based methodology to determine TAP allele frequencies in population studies.
The TAP genes have been extensively studied as candidate susceptibility genes for autoimmune and infectious diseases. TAP1 and TAP2 have two and three polymorphic sites respectively which are used for the allele assignment following WHO nomenclature. The usual techniques employed to determine the TAP alleles cannot unequivocally ascertain the alleles present in subjects which are heterozygous at more than one polymorphic position within the genes. This results in an inability to determine absolute TAP allele frequencies in population studies. The aim of this study was to devise a PCR-based method to unambiguously assign TAP alleles to all subjects. The novel method was tested in Oriental Type I diabetic and control subjects. The technique is a valuable tool for allele assignment in heterozygous subjects solely using PCR.
Department of Medicine, Birmingham University, UK. C.L.Perry@bham.ac.uk
C L
CL
Perry
C H
CH
Mijovic
C S
CS
Cockram
V T
VT
Yeung
D
D
Jenkins
A H
AH
Barnett
D000483:Alleles; D017920:Antiporters; D002352:Carrier Proteins / Q000235:genetics*; D005787:Gene Frequency; D006801:Humans; D007136:Immunoglobulins; D026901:Membrane Transport Proteins; D016133:Polymerase Chain Reaction / Q000379:methods*
D017920:Antiporters; D002352:Carrier Proteins; D007136:Immunoglobulins; D026901:Membrane Transport Proteins; C107762:tapasin