RT Journal Article T1 Tumor-associated autoantibodies as early detection markers for ovarian cancer? A prospective evaluation. A1 Kaaks, Rudolf A1 Fortner, Renée Turzanski A1 Hüsing, Anika A1 Barrdahl, Myrto A1 Hopper, Marika A1 Johnson, Theron A1 Tjønneland, Anne A1 Hansen, Louise A1 Overvad, Kim A1 Fournier, Agnès A1 Boutron-Ruault, Marie-Christine A1 Kvaskoff, Marina A1 Dossus, Laure A1 Johansson, Mattias A1 Boeing, Heiner A1 Trichopoulou, Antonia A1 Benetou, Vassiliki A1 La Vecchia, Carlo A1 Sieri, Sabina A1 Mattiello, Amalia A1 Palli, Domenico A1 Tumino, Rosario A1 Matullo, Giuseppe A1 Onland-Moret, N Charlotte A1 Gram, Inger T A1 Weiderpass, Elisabete A1 Sanchez-Perez, Maria-Jose A1 Navarro Sanchez, Carmen A1 Duell, Eric J A1 Ardanaz, Eva A1 Larranaga, Nerea A1 Lundin, Eva A1 Idahl, Annika A1 Jirström, Karin A1 Nodin, Björn A1 Travis, Ruth C A1 Riboli, Elio A1 Merritt, Melissa A1 Aune, Dagfinn A1 Terry, Kathryn A1 Cramer, Daniel W A1 Anderson, Karen S K1 antibodies K1 early detection K1 prospective validation AB Immuno-proteomic screening has identified several tumor-associated autoantibodies (AAb) that may have diagnostic capacity for invasive epithelial ovarian cancer, with AAbs to P53 proteins and cancer-testis antigens (CTAGs) as prominent examples. However, the early detection potential of these AAbs has been insufficiently explored in prospective studies. We performed ELISA measurements of AAbs to CTAG1A, CTAG2, P53 and NUDT11 proteins, for 194 patients with ovarian cancer and 705 matched controls from the European EPIC cohort, using serum samples collected up to 36 months prior to diagnosis under usual care. CA125 was measured using electrochemo-luminiscence. Diagnostic discrimination statistics were calculated by strata of lead-time between blood collection and diagnosis. With lead times ≤6 months, ovarian cancer detection sensitivity at 0.98 specificity (SE98) varied from 0.19 [95% CI 0.08-0.40] for CTAG1A, CTAG2 and NUDT1 to 0.23 [0.10-0.44] for P53 (0.33 [0.11-0.68] for high-grade serous tumors). However, at longer lead-times, the ability of these AAb markers to distinguish future ovarian cancer cases from controls declined rapidly; at lead times >1 year, SE98 estimates were close to zero (all invasive cases, range: 0.01-0.11). Compared to CA125 alone, combined logistic regression scores of AAbs and CA125 did not improve detection sensitivity at equal level of specificity. The added value of these selected AAbs as markers for ovarian cancer beyond CA125 for early detection is therefore limited. YR 2018 FD 2018-03-08 LK http://hdl.handle.net/10668/12173 UL http://hdl.handle.net/10668/12173 LA en DS RISalud RD Apr 10, 2025