A cohort analysis of residential radon exposure and melanoma incidence in Switzerland.

Boz, Seçkin; Kwiatkowski, Marek; Zwahlen, Marcel; Bochud, Murielle; Bulliard, Jean-Luc; Konzelmann, Isabelle; Bergeron, Yvan; Rapiti, Elisabetta; Maspoli Conconi, Manuela; Bordoni, Andrea; Röösli, Martin; Vienneau, Danielle (2024). A cohort analysis of residential radon exposure and melanoma incidence in Switzerland. Environmental research, 243, p. 117822. Elsevier 10.1016/j.envres.2023.117822

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Radon is a radioactive noble gas found in Earth's crust. It accumulates in buildings, and account for approximately half the ionizing radiation dose received by humans. The skin is considerably exposed to ionizing radiation from radon. We aimed to evaluate the association between residential radon exposure and melanoma and squamous cell carcinoma incidence. The study included 1.3 million adults (20 years and older) from the Swiss National Cohort who were residents of the cantons of Vaud, Neuchâtel, Valais, Geneva, Fribourg, and Ticino at the study baseline (December 04, 2000). Cases of primary tumours of skin (melanoma and squamous cell carcinoma) were identified using data from cantonal cancer registries. Long-term residential radon and ambient solar ultraviolet radiation exposures were assigned to each individual's address at baseline. Cox proportional hazard models with age as time scale, adjusted for canton, socioeconomic position, demographic data available in the census, and outdoor occupation were applied. Total and age specific effects were calculated, in the full population and in non-movers, and potential effect modifiers were tested. In total 4937 incident cases of melanoma occurred during an average 8.9 years of follow-up. Across all ages, no increased risk of malignant melanoma or squamous cell carcinoma incidence in relation to residential radon was found. An association was only observed for melanoma incidence in the youngest age group of 20-29 year olds (1.68 [95% CI: 1.29, 2.19] 100 Bq/m3 radon). This association was mainly in women, and in those with low socio-economic position. Residential radon exposure might be a relevant risk factor for melanoma, especially for young adults. However, the results must be interpreted with caution as this finding is based on a relatively small number of melanoma cases. Accumulation of radon is preventable, and measures to reduce exposure and communicate the risks remain important to convey to the public.

Item Type:

Journal Article (Original Article)

Division/Institute:

04 Faculty of Medicine > Pre-clinic Human Medicine > Institute of Social and Preventive Medicine (ISPM)

UniBE Contributor:

Zwahlen, Marcel

Subjects:

600 Technology > 610 Medicine & health
300 Social sciences, sociology & anthropology > 360 Social problems & social services

ISSN:

0013-9351

Publisher:

Elsevier

Funders:

[189] Swiss Cancer Research = Krebsforschung Schweiz

Language:

English

Submitter:

Pubmed Import

Date Deposited:

05 Dec 2023 11:00

Last Modified:

08 Dec 2023 05:58

Publisher DOI:

10.1016/j.envres.2023.117822

PubMed ID:

38048864

Uncontrolled Keywords:

Incidence Melanoma Prospective cohort Radon Squamous cell carcinoma

BORIS DOI:

10.48350/189833

URI:

https://boris.unibe.ch/id/eprint/189833

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