RT Journal Article T1 Prospective analysis of circulating metabolites and endometrial cancer risk. A1 Dossus, Laure A1 Kouloura, Eirini A1 Biessy, Carine A1 Viallon, Vivian A1 Siskos, Alexandros P A1 Dimou, Niki A1 Rinaldi, Sabina A1 Merritt, Melissa A A1 Allen, Naomi A1 Fortner, Renee A1 Kaaks, Rudolf A1 Weiderpass, Elisabete A1 Gram, Inger T A1 Rothwell, Joseph A A1 Lécuyer, Lucie A1 Severi, Gianluca A1 Schulze, Matthias B A1 Nøst, Therese Haugdahl A1 Crous-Bou, Marta A1 Sanchez-Perez, Maria-Jose A1 Amiano, Pilar A1 Colorado-Yohar, Sandra M A1 Gurrea, Aurelio Barricarte A1 Schmidt, Julie A A1 Palli, Domenico A1 Agnoli, Claudia A1 Tumino, Rosario A1 Sacerdote, Carlotta A1 Mattiello, Amalia A1 Vermeulen, Roel A1 Heath, Alicia K A1 Christakoudi, Sofia A1 Tsilidis, Konstantinos K A1 Travis, Ruth C A1 Gunter, Marc J A1 Keun, Hector C K1 Amino acids K1 Endometrial cancer K1 Lipids K1 Metabolomics K1 Obesity AB Endometrial cancer is strongly associated with obesity and dysregulation of metabolic factors such as estrogen and insulin signaling are causal risk factors for this malignancy. To identify additional novel metabolic pathways associated with endometrial cancer we performed metabolomic analyses on pre-diagnostic plasma samples from 853 case-control pairs from the European Prospective Investigation into Cancer and Nutrition (EPIC). A total of 129 metabolites (acylcarnitines, amino acids, biogenic amines, glycerophospholipids, hexoses, and sphingolipids) were measured by liquid chromatography-mass spectrometry. Conditional logistic regression estimated the associations of metabolites with endometrial cancer risk. An analysis focusing on clusters of metabolites using the bootstrap lasso method was also employed. After adjustment for body mass index, sphingomyelin [SM] C18:0 was positively (OR1SD: 1.18, 95% CI: 1.05-1.33), and glycine, serine, and free carnitine (C0) were inversely (OR1SD: 0.89, 95% CI: 0.80-0.99; OR1SD: 0.89, 95% CI: 0.79-1.00 and OR1SD: 0.91, 95% CI: 0.81-1.00, respectively) associated with endometrial cancer risk. Serine, C0 and two sphingomyelins were selected by the lasso method in >90% of the bootstrap samples. The ratio of esterified to free carnitine (OR1SD: 1.14, 95% CI: 1.02-1.28) and that of short chain to free acylcarnitines (OR1SD: 1.12, 95% CI: 1.00-1.25) were positively associated with endometrial cancer risk. Further adjustment for C-peptide or other endometrial cancer risk factors only minimally altered the results. These findings suggest that variation in levels of glycine, serine, SM C18:0 and free carnitine may represent specific pathways linked to endometrial cancer development. If causal, these pathways may offer novel targets for endometrial cancer prevention. PB Academic Press YR 2021 FD 2021-06-01 LK http://hdl.handle.net/10668/17972 UL http://hdl.handle.net/10668/17972 LA en NO Dossus L, Kouloura E, Biessy C, Viallon V, Siskos AP, Dimou N, et al. Prospective analysis of circulating metabolites and endometrial cancer risk. Gynecol Oncol. 2021 Aug;162(2):475-481. DS RISalud RD Apr 8, 2025