% IMPORTANT: The following is UTF-8 encoded. This means that in the presence % of non-ASCII characters, it will not work with BibTeX 0.99 or older. % Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or % “biber”. @ARTICLE{Yuan:302810, author = {T. Yuan$^*$ and K. E. Tagscherer and W. Roth and M. Bewerunge-Hudler$^*$ and A. Brobeil and M. Kloor and H. Bläker and H. Brenner$^*$ and M. Hoffmeister$^*$}, title = {{M}ethylation-based smoking signatures in blood and tissue samples for the prediction of self-reported smoking status and mortality in patients with colorectal cancer.}, journal = {Clinical epigenetics}, volume = {17}, number = {1}, issn = {1868-7075}, address = {[Erscheinungsort nicht ermittelbar]}, publisher = {BioMed Central}, reportid = {DKFZ-2025-01350}, pages = {113}, year = {2025}, note = {#EA:C070#LA:C070#}, abstract = {Smoking is a well-established risk factor for colorectal cancer (CRC) development. However, the reliability of DNA methylation-based smoking signatures in predicting smoking status and their prognostic value in CRC remain unclear, particularly across different biological sample types.Five previously validated methylation-based smoking signatures were analyzed in 2237 CRC patients with blood-derived DNA and 2273 patients with tumor tissue-derived DNA. Blood-derived signatures showed strong correlations with self-reported smoking status, effectively differentiating current smokers from never smokers (all p < 0.0001), with excellent discriminative ability (median area under the receiver operating characteristic curve: 0.94). In contrast, tumor tissue-derived signatures exhibited much weaker associations with smoking status. Among non-metastatic CRC patients, blood-derived methylation signatures were significantly associated with increased risks of all-cause and non-CRC-related mortality, but not with CRC-specific mortality. Conversely, two tumor tissue-derived signatures demonstrated stronger associations with CRC-specific mortality compared to blood-derived signatures.Blood-derived methylation-based smoking signatures are robust indicators for smoking exposure and are associated with increased mortality risk among non-metastatic CRC patients. When applied to tumor tissue, signatures showed stronger associations with CRC-specific mortality.}, keywords = {Humans / Colorectal Neoplasms: genetics / Colorectal Neoplasms: mortality / Colorectal Neoplasms: blood / DNA Methylation / Male / Female / Middle Aged / Smoking: genetics / Smoking: adverse effects / Smoking: blood / Self Report / Aged / Prognosis / Risk Factors / Colorectal cancer (Other) / DNA methylation biomarkers (Other) / Prognosis (Other) / Smoking (Other)}, cin = {W110 / HD01 / C070}, ddc = {610}, cid = {I:(DE-He78)W110-20160331 / I:(DE-He78)HD01-20160331 / I:(DE-He78)C070-20160331}, pnm = {313 - Krebsrisikofaktoren und Prävention (POF4-313)}, pid = {G:(DE-HGF)POF4-313}, typ = {PUB:(DE-HGF)16}, pubmed = {pmid:40611182}, pmc = {pmc:PMC12225191}, doi = {10.1186/s13148-025-01918-9}, url = {https://inrepo02.dkfz.de/record/302810}, }