RT Journal Article T1 Family history of first degree as a risk factor for colorectal cancer A1 Rubin-Garcia, Maria A1 Martin, Vicente A1 Vitelli-Storelli, Facundo A1 Moreno, Victor A1 Aragones, Nuria A1 Ardanaz, Eva A1 Alonso-Molero, Jessica A1 Jimenez-Moleon, Jose J. A1 Amiano, Pilar A1 Fernandez-Tardon, Guillermo A1 Molina-Barcelo, Ana A1 Alguacil, Juan A1 Dolores-Chirlaque, Maria A1 Alvarez-Alvarez, Laura A1 Perez-Gomez, Beatriz A1 Dierssen-Sotos, Trinidad A1 Olmedo-Requena, Rocio A1 Guevara, Marcela A1 Fernandez-Villa, Tania A1 Pollan, Marina A1 Benavente, Yolanda K1 Colorectal cancer K1 Family history K1 Risk factor K1 Case and control K1 MCCSpain K1 Colon-cancer K1 Metaanalysis K1 Impact AB Objective: To evaluate the association between first-degree family history and colorectal cancer (CRC).Method: We analyzed data from 2857 controls and 1360 CRC cases, collected in the MCC-Spain project. The adjusted odds ratio (OR) and 95% confidence interval (95% CI) of association with the family history of CRC was estimated by non-conditional logistic regression.Result: First-degree relatives doubled the risk of CRC (OR: 2.19; 95% CI: 1.80-2.66), increasing in those with two or more (OR: 4.22; 95% CI: 2.29-7.78) and in those whose relatives were diagnosed before 50 years (OR: 3.24; 95% CI: 1.52-6.91). Regarding the association of the family history with the location, no significant differences were observed between colon and rectum, but there were in the relation of these with the age of diagnosis, having more relatives those diagnosed before 50 years (OR: 4.79; 95% CI: 2.65-8.65).Conclusions: First-degree relatives of CRC increase the chances of developing this tumor, they also increase when the relative is diagnosed at an early age. Therefore, it must be a target population on which to carry out prevention measures. (C) 2021 SESPAS. Published by Elsevier Espana, S.L.U. PB Elsevier SN 0213-9111 YR 2022 FD 2022-07-01 LK https://hdl.handle.net/10668/28067 UL https://hdl.handle.net/10668/28067 LA es DS RISalud RD Apr 8, 2025