Petra Kriķe, Meret Sophia Appel, Zakera Shums, Inese Poļaka, Ilona Kojalo, Dace Rudzīte, Ivars Tolmanis, Arnis Kiršners, Inga Bogdanova, Ilona Aleksandravica, Gary L. Norman, Mārcis Leja

Autoimmune gastritis serological biomarkers in gastric cancer patients

  • Cancer Research
  • Public Health, Environmental and Occupational Health
  • Oncology
  • Epidemiology
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The role of autoimmunity in the pathogenesis of gastric cancer remains controversial. We studied antiparietal cell antibody (anti-PCA) and anti-intrinsic factor antibody (anti-IFA) levels and their associations with pepsinogen I/pepsinogen II levels in patients with gastric adenocarcinoma compared to a control group with mild or no atrophy of the stomach mucosa. Plasma levels of anti-PCA and anti-IFA were measured by ELISA (Inova Diagnostics Inc, San Diego, California, USA). The cutoff value for anti-PCA and anti-IFA positivity was ≥25 units. Altogether 214 patients (126 men, 88 women, median age 64.46, range: 35–86) with confirmed gastric adenocarcinoma and 214 control cases paired for age and sex were included in the study. Positive anti-PCA was present in 22 (10.3%) gastric cancer patients and controls (P ≥ 0.999); positive anti-IFA in 6 (2.8%) and 4 (1.9.%), P < 0.232, respectively. We did not find significant differences in anti-PCA and anti-IFA positivity between gastric cancer patients and the control group; further investigation is required to better understand the potential involvement of autoimmune gastritis in the development of gastric cancer.

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