DNA typing for HLA-DPB1-alleles in German patients with systemic lupus erythematosus using the polymerase chain reaction and DIG-ddUTP-labelled oligonucleotide probes. Members of SLE Study Group.
Genomic DNA of 178 German Caucasian patients with systemic lupus erythematosus are studied for HLA-DP locus by using PCR and DIG-ddUTP-labelled oligonucleotide probes. A significant increase of DPB1*0101 is observed in SLE patients compared with healthy controls (chi 2 = 15.27, p.c. < 0.004). DPB1*0501 and *0901 are also slightly increased (chi 2 = 5.85, P < 0.05, p.c. = NS; chi 2 = 5.64, P < 0.05, p.c. = NS). There is no significant difference in frequency of DP alleles between male and female patients. Since a linkage disequilibrium between HLA-B, DR and DP loci is found in our SLE patients, an analysis is performed assessing the relative importance of these HLA-markers to SLE. The results show that the increase of DPB1*0101 in SLE patients is associated with the HLA-B8, DR3 haplotype and it suggests a more important role for HLA-B8, DR3 or genes within this haplotype than for DPB1*0101 in the genetic predisposition for SLE.
Yao
Z
Z
Labor für Immungenetik, Kinderpoliklinik der Universität, München, Germany.
Hartung
K
K
Deicher
H G
HG
Brünnler
G
G
Bettinotti
M P
MP
Keller
E
E
Paul
C
C
Gawron
C
C
Mikschl
S
S
Albert
E
E
D000483:Alleles; D001483:Base Sequence; D004247:DNA / Q000235:genetics*; D005260:Female; D005787:Gene Frequency; D005858:Germany; D006682:HLA-DP Antigens / Q000235:genetics*; D059868:HLA-DP beta-Chains; D006801:Humans; D008180:Lupus Erythematosus, Systemic / Q000235:genetics* / Q000276:immunology*; D008297:Male; D008969:Molecular Sequence Data; D015345:Oligonucleotide Probes; D016133:Polymerase Chain Reaction; D011110:Polymorphism, Genetic
D006682:HLA-DP Antigens; D059868:HLA-DP beta-Chains; C071170:HLA-DPB1 antigen; D015345:Oligonucleotide Probes; D004247:DNA