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Abstract
Hodgkin Lymphoma (HL), a common early adulthood malignancy, has a complex etiology. We conducted a migrant cohort study to assess immigration status and origin as predictors of HL in Israel, which has among the highest rates of HL worldwide. Nationwide data on 2,285,009 16–19-year-old Jewish adolescents, collected from 1967–2011, were linked to Israel’s Cancer Registry to obtain the incidence of HL until 2012. Two thousand and ninety-three HL cases were detected during 47.0 million person-years of follow-up. Using multivariable-adjusted Cox proportional hazards modeling, risk was higher for Israeli-born compared to immigrants, similarly across origin groups (HR = 1.59; 95%CI 1.32–1.92 for the dominant nodular sclerosis subtype). Risk of HL was greater for more recent year of birth, higher BMI, taller stature, and apparently for women. These findings suggest that exposure to as yet unidentified elements of the Israeli environment increase the risk of nodular sclerosis HL, and should aid in directing research efforts.
Acknowledgements
This study was supported by research grants from the Israel Cancer Research Fund, 10.13039/100001698, and the Environment and Health Fund, 10.13039/501100008009 [award No. RGA 1002] to Prof. Jeremy Kark.
Potential conflict of interest
Disclosure forms provided by the authors are available with the full text of this article online http://dx.doi.org/10.1080/10428194.2016.1220552.