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. 2019 Sep 2;11(9):1291.
doi: 10.3390/cancers11091291.

Cancers after Chornobyl: From Epidemiology to Molecular Quantification

Dimitry Bazyka  1 , Natalya Gudzenko  2 , Iryna Dyagil  2 , Iryna Ilienko  2 , David Belyi  2 , Vadim Chumak  2 , Anatoly Prysyazhnyuk  2 , Elena Bakhanova  2
Affiliations

Cancers after Chornobyl: From Epidemiology to Molecular Quantification

Dimitry Bazyka et al. Cancers (Basel). .

Abstract

An overview and new data are presented from cancer studies of the most exposed groups of the population after the Chornobyl accident, performed at the National Research Center for Radiation Medicine (NRCRM). Incidence rates of solid cancers were analyzed for the 1990-2016 period in cleanup workers, evacuees, and the general population from the contaminated areas. In male cleanup workers, the significant increase in rates was demonstrated for cancers in total, leukemia, lymphoma, and thyroid cancer, as well as breast cancer rates were increased in females. Significantly elevated thyroid cancer incidence was identified in the male cleanup workers cohort (150,813) in 1986-2012 with an overall standardized incidence ratio (SIR) of 3.35 (95% CI: 2.91-3.80). A slight decrease in incidence rates was registered starting at 25 years after exposure. In total, 32 of 57 deaths in a group of cleanup workers with confirmed acute radiation syndrome (ARS) or not confirmed ARS (ARS NC) were due to blood malignancies or cancer. Molecular studies in cohort members included gene expression and polymorphism, FISH, relative telomere length, immunophenotype, micronuclei test, histone H2AX, and TORCH infections. Analysis of chronic lymphocytic leukemia (CLL) cases from the cohort showed more frequent mutations in telomere maintenance pathway genes as compared with unexposed CLL patients.

Keywords: Chornobyl (Chernobyl); breast cancer; cleanup workers; leukemia; telomere length; thyroid cancer.

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Conflict of interest statement

The authors declare no conflicts of interest.

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