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Rapid HLA-B27 screening with real-time TaqMan PCR: a clinical validation in the Dutch population
-
Elianne A. Roelandse-Koop
and
Rianne van Rhee-Luderer
Published/Copyright:
September 6, 2011
Abstract
Background: Human leukocyte antigen B27 (HLA-B27) is strongly associated with ankylosing spondylitis. The B27 allele is present in 90% of patients with this disease, whereas it is present in only 9% of Caucasians. Molecular detection of HLA-B27 is traditionally based on allele specific amplification of exon 2 (Olerup method) or exon 3 (Dominguez method) by PCR, followed by gel analysis.
Methods: We developed a real-time TaqMan PCR based on the Dominguez method with a β-Globin PCR as internal control.
Results: A total of 544 clinical samples were used to compare the real-time TaqMan PCR with the traditional Dominguez PCR, the traditional Olerup PCR and a commercial Olerup based HLA-B27 detection kit (Olerup SSPTM HLA-B27, GenoVision). While 542 samples gave concordant results, two samples showed discrepancies and were further analyzed. One sample that showed a discrepancy was negative with the traditional Olerup method and positive with the three other procedures. Sequencing analysis showed the presence of HLA-B*2712 in this sample. The other sample, positive with both Olerup based PCRs and negative with both Dominguez based methods, turned out to be positive for HLA-B*2707 by sequence analysis.
Conclusions: With a correct result for 543 out of 544 samples (99.8%), we consider our real-time HLA-B27 PCR is a reliable method to detect HLA-B27 in the Dutch population, with reduced hands-on time and contamination risk compared to traditional PCR methods.
Received: 2010-11-29
Accepted: 2011-8-1
Published Online: 2011-9-6
Published in Print: 2011-12-1
©2011 by Walter de Gruyter Berlin Boston
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