PMID- 30619943 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220331 IS - 2397-9070 (Electronic) IS - 2397-9070 (Linking) VI - 2 IP - 6 DP - 2018 Dec TI - Validation of a novel single-drop rapid human leukocyte antigen-DQ2/-DQ8 typing method to identify subjects susceptible to celiac disease. PG - 311-316 LID - 10.1002/jgh3.12090 [doi] AB - BACKGROUND AND AIM: Human leukocyte antigen (HLA)-DQ2 and/or -DQ8 is an essential risk factor for celiac disease (CD). About 90-95% of patients with CD carry HLA-DQ2/-DQ8 alleles, and HLA-DQ typing is considered an additional diagnostic test. Conventional polymerase chain reaction (PCR)-based HLA-DQ typing methods are expensive, complex, and a time-consuming process. We assessed the efficacy of a novel HLA-DQ typing method, "Celiac Gene Screen," for the detection of CD-associated HLA haplotypes. METHODS: To assess the diagnostic performance of the Celiac Gene Screen test, 100 ethylenediaminetetraacetic acid (EDTA) blood samples, already characterized by the conventional HLA-DQ typing method, that is, PCR sequence-specific oligonucleotide probes (PCR-SSOP), a concordance between both the methods were explored. For validity, a further 300 EDTA blood samples with unknown HLA-DQ status were genotyped using the Celiac Gene Screen test, including 141 samples from CD, 56 first-degree relatives (FDRs) of CD and 103 samples from controls. RESULTS: Of the 100 samples with known status of HLA-DQ alleles, 79 samples were HLA-DQ2 and/or -DQ8 positive, and 21 samples were HLA-DQ2 and/or -DQ8 negative by conventional PCR. These 100 samples were re-typed using the Celiac Gene screen kit; all 79 positives were typed positive, and 21 negatives were typed negative for HLA-DQ alleles. Among 300 samples with unknown HLA-DQ status, 118 of 141 (84%) patients with CD, 48 of 56 (86%) FDRs of CD, and 52 of 103 (50%) controls typed positive for HLA-DQ alleles. CONCLUSIONS: The Celiac Gene Screen HLA-DQ typing method showed excellent concordance with the conventional HLA-DQ typing method and could be a cost-reducing and effective method for CD-associated HLA screening. FAU - Verma, Anil K AU - Verma AK AD - Celiac Disease Research Laboratory, Department of Pediatrics Universita Politecnica delle Marche Ancona Italy. FAU - Singh, Alka AU - Singh A AD - Department of Gastroenterology and Human Nutrition All India Institute of Medical Sciences New Delhi India. FAU - Gatti, Simona AU - Gatti S AD - Department of Pediatrics Universita Politecnica delle Marche Ancona Italy. FAU - Lionetti, Elena AU - Lionetti E AD - Department of Pediatrics Universita Politecnica delle Marche Ancona Italy. FAU - Galeazzi, Tiziana AU - Galeazzi T AD - Celiac Disease Research Laboratory, Department of Pediatrics Universita Politecnica delle Marche Ancona Italy. FAU - Monachesi, Chiara AU - Monachesi C AD - Celiac Disease Research Laboratory, Department of Pediatrics Universita Politecnica delle Marche Ancona Italy. FAU - Franceschini, Elisa AU - Franceschini E AD - Department of Pediatrics Universita Politecnica delle Marche Ancona Italy. FAU - Ahuja, Vineet AU - Ahuja V AD - Department of Gastroenterology and Human Nutrition All India Institute of Medical Sciences New Delhi India. FAU - Catassi, Carlo AU - Catassi C AD - Department of Pediatrics Universita Politecnica delle Marche Ancona Italy. FAU - Makharia, Govind K AU - Makharia GK AUID- ORCID: 0000-0002-2474-2194 AD - Department of Gastroenterology and Human Nutrition All India Institute of Medical Sciences New Delhi India. LA - eng PT - Journal Article DEP - 20181101 PL - Australia TA - JGH Open JT - JGH open : an open access journal of gastroenterology and hepatology JID - 101730833 PMC - PMC6308057 OTO - NOTNLM OT - HLA OT - alleles OT - celiac disease OT - genotyping OT - polymerase chain reaction OT - susceptibility EDAT- 2019/01/09 06:00 MHDA- 2019/01/09 06:01 PMCR- 2018/11/01 CRDT- 2019/01/09 06:00 PHST- 2018/06/12 00:00 [received] PHST- 2018/08/03 00:00 [revised] PHST- 2018/08/12 00:00 [accepted] PHST- 2019/01/09 06:00 [entrez] PHST- 2019/01/09 06:00 [pubmed] PHST- 2019/01/09 06:01 [medline] PHST- 2018/11/01 00:00 [pmc-release] AID - JGH312090 [pii] AID - 10.1002/jgh3.12090 [doi] PST - epublish SO - JGH Open. 2018 Nov 1;2(6):311-316. doi: 10.1002/jgh3.12090. eCollection 2018 Dec.