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The association between longer relative leukocyte telomere length and risk of glioma is independent of the potentially confounding factors allergy, BMI, and smoking
Umeå University, Faculty of Medicine, Department of Radiation Sciences, Oncology.
Umeå University, Faculty of Medicine, Department of Medical Biosciences, Pathology.ORCID iD: 0000-0002-2783-0712
Umeå University, Faculty of Medicine, Department of Radiation Sciences, Oncology.
Umeå University, Faculty of Medicine, Department of Radiation Sciences, Oncology.
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2019 (English)In: Cancer Causes and Control, ISSN 0957-5243, E-ISSN 1573-7225, Vol. 30, no 2, p. 177-185Article in journal (Refereed) Published
Abstract [en]

Purpose: Previous studies have suggested an association between relative leukocyte telomere length (rLTL) and glioma risk. This association may be influenced by several factors, including allergies, BMI, and smoking. Previous studies have shown that individuals with asthma and allergy have shortened relative telomere length, and decreased risk of glioma. Though, the details and the interplay between rLTL, asthma and allergies, and glioma molecular phenotype is largely unknown. Methods: rLTL was measured by qPCR in a Swedish population-based glioma case–control cohort (421 cases and 671 controls). rLTL was related to glioma risk and health parameters associated with asthma and allergy, as well as molecular events in glioma including IDH1 mutation, 1p/19q co-deletion, and EGFR amplification. Results: Longer rLTL was associated with increased risk of glioma (OR = 1.16; 95% CI 1.02–1.31). Similar to previous reports, there was an inverse association between allergy and glioma risk. Specific, allergy symptoms including watery eyes was most strongly associated with glioma risk. High body mass index (BMI) a year prior diagnosis was significantly protective against glioma in our population. Adjusting for allergy, asthma, BMI, and smoking did not markedly change the association between longer rLTL and glioma risk. rLTL among cases was not associated with IDH1 mutation, 1p/19q co-deletion, or EGFR amplification, after adjusting for age at diagnosis and sex. Conclusions: In this Swedish glioma case–control cohort, we identified that long rLTL increases the risk of glioma, an association not confounded by allergy, BMI, or smoking. This highlights the complex interplay of the immune system, rLTL and cancer risk.

Place, publisher, year, edition, pages
Springer, 2019. Vol. 30, no 2, p. 177-185
Keywords [en]
Glioma, Relative leukocyte telomere length (rLTL), Allergy, BMI, Smoking, IDH1, 1p/19q, EGFR
National Category
Cancer and Oncology Public Health, Global Health, Social Medicine and Epidemiology
Identifiers
URN: urn:nbn:se:umu:diva-157597DOI: 10.1007/s10552-018-1120-2ISI: 000459153800007PubMedID: 30560391OAI: oai:DiVA.org:umu-157597DiVA, id: diva2:1299824
Available from: 2019-03-28 Created: 2019-03-28 Last updated: 2019-03-28Bibliographically approved

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Andersson, UlrikaDegerman, SofieDahlin, Anna M.Wibom, CarlJohansson, GunnarMelin, Beatrice S.

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