Background: It has been suggested that GastroPanel might be a useful tool for the diagnosis of chronic atrophic gastritis (CAG) measuring four biomarkers in blood: basal gastrin-17 (G17), pepsinogen I and II (PGI and PGII), and Helicobacter pylori antibodies.
Aim: To determine the accuracy of GastroPanel for the diagnosis of CAG.
Methods: This was a prospective, blinded, multicenter study that included dyspeptic patients. G17, PGI, and PGII were determined by enzyme immunoassays. Three antrum and two corpus biopsies were obtained for standard histological analysis and rapid urease test. Biopsies were analyzed by a single blinded expert pathologist.
Results: Ninety-one patients were included (77% women, mean age 44 years, 51% H. pylori positive, 17% with CAG). G17 was reduced in patients with antrum CAG (5.4 vs. 13.4 pmol/l; P<0.01) and increased in patients with corpus CAG (11 vs. 24 pmol/l; P<0.05), but its accuracy was only acceptable in the case of corpus localization [area under the receiver operating characteristic curve (AUC), 74%]; PGII difference was almost statistically significant only when testing for corpus atrophy (33 vs. 21 μg/l; P=0.05; AUC=72%). The PGI and PGI/PGII ratio showed no significant differences (AUCs were all unacceptably low). Helicobacter pylori antibody levels were higher in H. pylori-infected patients (251 vs. 109 EIU, P=0.01; AUC=70). The accuracy of GastroPanel for the diagnosis of CAG was as follows: sensitivity 50%; specificity 80%; positive 25% and negative 92% predictive values; and positive 2.4 and negative 0.6 likelihood ratios.
Conclusion: GastroPanel is not accurate enough for the diagnosis of CAG; thus, its systematic use in clinical practice cannot be recommended.
aHospital of La Princesa, and Instituto de Investigación Sanitaria Princesa
bCentro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Madrid, Spain
Gastroenterology Units of cHospital Mutua de Terrassa, Terrassa
dHospital del Mar, Barcelona
eHospital Rio Hortega, Valladolid
fHospital de Cabueñes, Gijon
gHospital Costa del Sol, Malaga
hHospital San Jorge, Huesca
iHospital Clínico de Zaragoza, Zaragoza
jHospital Virgen de la Salud, Toledo
Correspondence to Adrian G. McNicholl, PhD, Servicio de Aparato Digestivo, Hospital Universitario de la Princesa, C/Diego de León 62, Madrid 28006, Spain Tel: +34 91 309 39 11; fax: +34 91 402 22 99; e-mail: firstname.lastname@example.org
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Received February 25, 2014
Accepted May 1, 2014