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Chronic lymphocytic leukaemia and radiation: findings among workers at five US nuclear facilities and a review of the recent literature.

Authors
Schubauer-Berigan-MK; Daniels-RD; Fleming-DA; Markey-AM; Couch-JR; Ahrenholz-SH; Burphy-JS; Anderson-JL; Tseng-CY
Source
Br J Haematol 2007 Dec; 139(5):799-808
NIOSHTIC No.
20032952
Abstract
The aetiology of chronic lymphocytic leukaemia (CLL) is largely unknown. Despite compelling evidence for ionising radiation as a cause of most forms of leukaemia, CLL was not found to be radiogenic in early studies. Herein we describe the recent evidence for causation of CLL by ionising and non-ionising radiation, including a nested case-control study conducted within a cohort of 94 517 US workers at four nuclear weapons facilities and a nuclear naval shipyard. Forty-three cases of CLL deaths and 172 age-matched controls were identified with follow-up up to between 1990 and 1996. Radiation exposure from external sources and plutonium (lagged 10 years) was assessed for each worker, based on monitoring records. The excess relative rate (ERR) was estimated for workers receiving elevated doses compared to unexposed workers, controlling for possible risk factors. The ERR per 10 mSv was -0020 (95% confidence interval: <0, 014) based on all exposed workers. However, for workers receiving <100 mSv, the ERR per 10 mSv was 020 (-0035, 096). Recent studies of uranium miners and other populations have shown elevations of CLL possibly associated with ionising and non-ionising radiation. New studies should use incident cases and sufficient latency to account for the expected lengthy induction period for CLL.
Keywords
Blood-disorders; Blood-analysis; Blood-cells; Radiation-contamination; Statistical-analysis; Uranium-compounds; Cancer; Dose-response; Work-environment
Contact
Mary K. Schubauer-Berigan, NIOSH, DSHEFS, MS-R15, 5555 Ridge Ave, Cincinnati, OH 45213
CODEN
BJHEAL
Publication Date
20071201
Document Type
Journal Article
Email Address
zcg3@cdc.gov
Fiscal Year
2008
NTIS Accession No.
NTIS Price
Issue of Publication
5
ISSN
0007-1048
NIOSH Division
DSHEFS
Source Name
British Journal of Haematology
State
OH
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