% 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{Gao:143590, author = {X. Gao$^*$ and T. Wilsgaard and E. H. Jansen and B. Holleczek and Y. Zhang$^*$ and Y. Xuan$^*$ and A. Anusruti$^*$ and H. Brenner$^*$ and B. Schöttker$^*$}, title = {{P}re-diagnostic derivatives of reactive oxygen metabolites and the occurrence of lung, colorectal, breast and prostate cancer: {A}n individual participant data meta-analysis of two large population-based studies.}, journal = {International journal of cancer}, volume = {145}, number = {1}, issn = {1097-0215}, address = {Bognor Regis}, publisher = {Wiley-Liss}, reportid = {DKFZ-2019-01170}, pages = {49 - 57}, year = {2019}, abstract = {Oxidative stress may be involved in carcinogenesis and biomarkers of oxidative stress like derivatives of reactive oxygen metabolites (d-ROM) may be useful for cancer prediction. However, no previous study assessed the association of pre-diagnostic d-ROM measurements with cancer incidence. We measured serum d-ROM levels in a cohort sample of n = 4,345 participants of the German ESTHER study and in a case-cohort sample of the Norwegian Tromsø study (cancer cases: n = 941; subcohort: n = 1,000). Moreover, d-ROM was repeatedly measured at follow-ups of both studies. Hazard ratios (HRs) and $95\%$ confidence intervals $(95\%$ CIs) were derived by (weighted) multivariable-adjusted Cox regression with time-dependent modeling of d-ROM levels for incident lung, colorectal, breast and prostate cancer. Individual study results were pooled by random effects meta-analysis. The HRs $(95\%$ CI) for comparison of top and bottom d-ROM tertile were statistically significant for lung (1.90 [1.25-2.89]), colorectal (1.70 [1.15-2.51]) and breast cancer incidence (1.45 [1.01-2.09]) but not for prostate cancer incidence (1.20 [0.84-1.72]). In conclusion, this individual participant data meta-analysis of two large population-based cohort studies with repeated d-ROM measurements yielded evidence for an involvement of high oxidative stress in carcinogenesis. Given the observed associations of pre-diagnostic d-ROM measurements with lung, colorectal and breast cancer incidence, subjects with increased serum d-ROM levels should be recommended to reduce these levels by lifestyle changes including smoking cessation, a healthy diet and an increase in physical activity.}, cin = {C070 / C120 / L101}, ddc = {610}, cid = {I:(DE-He78)C070-20160331 / I:(DE-He78)C120-20160331 / I:(DE-He78)L101-20160331}, pnm = {313 - Cancer risk factors and prevention (POF3-313)}, pid = {G:(DE-HGF)POF3-313}, typ = {PUB:(DE-HGF)16}, pubmed = {pmid:30561010}, doi = {10.1002/ijc.32073}, url = {https://inrepo02.dkfz.de/record/143590}, }