Ovarian cancer early detection by circulating CA125 in the context of anti-CA125 autoantibody levels: Results from the EPIC cohort

Autor: Fortner, R.T. Schock, H. Le Cornet, C. Hüsing, A. Vitonis, A.F. Johnson, T.S. Fichorova, R.N. Fashemi, T. Yamamoto, H.S. Tjønneland, A. Hansen, L. Overvad, K. Boutron-Ruault, M.-C. Kvaskoff, M. Severi, G. Boeing, H. Trichopoulou, A. Papatesta, E.-M. La Vecchia, C. Palli, D. Sieri, S. Tumino, R. Sacerdote, C. Mattiello, A. Onland-Moret, N.C. Peeters, P.H. Bueno-de-Mesquita, H.B. Weiderpass, E. Quirós, J.R. Duell, E.J. Sánchez, M.-J. Navarro, C. Ardanaz, E. Larrañaga, N. Nodin, B. Jirström, K. Idahl, A. Lundin, E. Khaw, K.-T. Travis, R.C. Gunter, M. Johansson, M. Dossus, L. Merritt, M.A. Riboli, E. Terry, K.L. Cramer, D.W. Kaaks, R.
Jazyk: angličtina
Rok vydání: 2018
Předmět:
Popis: CA125 is the best ovarian cancer early detection marker to date; however, sensitivity is limited and complementary markers are required to improve discrimination between ovarian cancer cases and non-cases. Anti-CA125 autoantibodies are observed in circulation. Our objective was to evaluate whether these antibodies (1) can serve as early detection markers, providing evidence of an immune response to a developing tumor, and (2) modify the discriminatory capacity of CA125 by either masking CA125 levels (resulting in lower discrimination) or acting synergistically to improve discrimination between cases and non-cases. We investigated these objectives using a nested case–control study within the European Prospective Investigation into Cancer and Nutrition cohort (EPIC) including 250 cases diagnosed within 4 years of blood collection and up to four matched controls. Circulating CA125 antigen and antibody levels were quantified using an electrochemiluminescence assay. Adjusted areas under the curve (aAUCs) by 2-year lag-time intervals were calculated using conditional logistic regression calibrated toward the absolute risk estimates from a pre-existing epidemiological risk model as an offset-variable. Anti-CA125 levels alone did not discriminate cases from controls. For cases diagnosed
Databáze: OpenAIRE