AIM: To establish the diagnostic performance of several serological tests, individually and in combination, for diagnosing celiac disease (CD) in patients with different pretest probabilities, and to explore potential serological algorithms to reduce the necessity for biopsy. METHODS: We prospectively performed duodenal biopsy and serology in 679 adults who had either high risk (n = 161) or low risk (n = 518) for CD. Blood samples were tested using six assays (enzyme-linked immunosorbent assay) that detected antibodies to tissue transglutaminase (tTG) and deamidated gliadin peptide (DGP). RESULTS: CD prevalence was 39.1% in the high-risk population and 3.3% in the low-risk group. In high-risk patients, all individual assays had a high diagnostic efficacy [area under receiving operator characteristic curves (AU ROC): 0.968 to 0.999]. In contrast, assays had a lower diagnostic efficacy (AU ROC: 0.835 to 0.972) in the low-risk group. Using assay combinations, it would be possible to reach or rule out diagnosis of CD without biopsy in 92% of cases in both pretest populations. We observed that the new DGP/tTG Screen assay resulted in a surplus compared to more conventional assays in any clinical situation. CONCLUSION: The DGP/tTG Screen assay could be considered as the best initial test for CD. Combinations of two tests, including a DGP/tTG Screen, might be able to diagnose CD accurately in different clinical scenarios making biopsy avoidable in a high proportion of subjects.
AIM: To establish the diagnostic performance of several serological tests, individually and in combination, for diagnosing celiac disease (CD) in patients with different pretest probabilities, and to explore potential serological algorithms to reduce the necessity for biopsy. METHODS: We prospectively performed duodenal biopsy and serology in 679 adults who had either high risk (n = 161) or low risk (n = 518) for CD. Blood samples were tested using six assays (enzyme-linked immunosorbent assay) that detected antibodies to tissue transglutaminase (tTG) and deamidated gliadin peptide (DGP). RESULTS:CD prevalence was 39.1% in the high-risk population and 3.3% in the low-risk group. In high-risk patients, all individual assays had a high diagnostic efficacy [area under receiving operator characteristic curves (AU ROC): 0.968 to 0.999]. In contrast, assays had a lower diagnostic efficacy (AU ROC: 0.835 to 0.972) in the low-risk group. Using assay combinations, it would be possible to reach or rule out diagnosis of CD without biopsy in 92% of cases in both pretest populations. We observed that the new DGP/tTG Screen assay resulted in a surplus compared to more conventional assays in any clinical situation. CONCLUSION: The DGP/tTG Screen assay could be considered as the best initial test for CD. Combinations of two tests, including a DGP/tTG Screen, might be able to diagnose CD accurately in different clinical scenarios making biopsy avoidable in a high proportion of subjects.
Authors: Riccardo Scoglio; Giuseppe Di Pasquale; Giuseppe Pagano; Maria Cristina Lucanto; Giuseppe Magazzù; Concetta Sferlazzas Journal: Am J Gastroenterol Date: 2003-06 Impact factor: 10.864
Authors: Edwin Liu; Fei Bao; Katherine Barriga; Dongmei Miao; Liping Yu; Henry A Erlich; Joel E Haas; George S Eisenbarth; Marian J Rewers; Edward J Hoffenberg Journal: Clin Gastroenterol Hepatol Date: 2003-09 Impact factor: 11.382
Authors: Emilia Sugai; Hui J Hwang; Horacio Vázquez; María L Moreno; Florencia Costa; Gabriela Longarini; María I Pinto-Sánchez; Sonia Niveloni; Edgardo Smecuol; Roberto M Mazure; Elena F Verdu; Eduardo Mauriño; Julio C Bai Journal: Am J Gastroenterol Date: 2015-10 Impact factor: 10.864
Authors: Jonas F Ludvigsson; Timothy R Card; Katri Kaukinen; Julio Bai; Fabiana Zingone; David S Sanders; Joseph A Murray Journal: United European Gastroenterol J Date: 2015-04 Impact factor: 4.623