The HLA Alleles DRB1*13 and DQB1*06 Are Associated to Whipple's Disease

Miryam Martinetti, Federico Biagi, Carla Badulli, Gerhard E. Feurle, Christian Müller, Verena Moos, Thomas Schneider, Thomas Marth, Alessandra Marchese, Lucia Trotta, Sara Sachetto, Annamaria Pasi, Annalisa De Silvestri, Laura Salvaneschi, Gino R. Corazza

Research output: Contribution to journalArticlepeer-review

Abstract

Background & Aims: Whipple's disease is a systemic, chronic, relapsing disorder caused by a combination of environmental (Tropheryma whipplei) and unknown host factors. Because it is a rare disease, the association between HLA type and Whipple's disease has been studied in only small numbers of patients; these studies have led to conflicting results. We aimed to investigate whether disease phenotype and outcome are associated with HLA type in 122 patients with Whipple's disease. Methods: Genomic DNA was collected from 103 German, 11 Italian, and 8 Austrian patients with Whipple's disease, along with 62 healthy Austrian workers exposed to T whipplei (14 stool samples contained the bacterium). HLA class I and II alleles were identified by polymerase chain reaction analysis. Patient genotypes were compared with those of healthy German and Austrian populations; data for Italian controls were obtained from the Pavia HLA bone marrow donors' bank. Results: HLA-DRB1*13 and DQB1*06 alleles occurred significantly more frequently in patients with Whipple's disease but not in healthy individuals who had been exposed to T Whipplei. The cumulative odds ratios for disease were 2.23 for the DRB1*13 allele (P <.0001) and 2.25 for the DQB1*06 allele (P <.0001). Conclusions: DRB1*13 and DQB1*06 alleles were found to be risk factors in the largest HLA study ever performed in patients with Whipple's disease.

Original languageEnglish
Pages (from-to)2289-2294
Number of pages6
JournalGastroenterology
Volume136
Issue number7
DOIs
Publication statusPublished - Jun 2009

ASJC Scopus subject areas

  • Gastroenterology

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