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Herbicide use in farming and other jobs in relation to non-Hodgkin’s lymphoma (NHL) risk
Journal article   Open access   Peer reviewed

Herbicide use in farming and other jobs in relation to non-Hodgkin’s lymphoma (NHL) risk

Anneclaire J De Roos, Lin Fritschi, Mary H Ward, Alain Monnereau, Jonathan Hofmann, Leslie Bernstein, Parveen Bhatti, Yolanda Benavente Moreno, Geza Benke, Delphine Casabonne, …
Occupational and environmental medicine (London, England), Vol.79(12), pp.795-806
10/07/2022
DOI: 10.1136/oemed-2022-108371
PMCID: PMC9669193
PMID: 36207110
url
https://doi.org/10.1136/oemed-2022-108371View
Published (Version of record) Open Access

Abstract

ObjectivesGiven mixed evidence for carcinogenicity of current-use herbicides, we studied the relationship between occupational herbicide use and risk of non-Hodgkin’s lymphoma (NHL) in a large, pooled study.MethodsWe pooled data from 10 case-control studies participating in the International Lymphoma Epidemiology Consortium, including 9229 cases and 9626 controls from North America, the European Union and Australia. Herbicide use was coded from self-report or by expert assessment in the individual studies, for herbicide groups (eg, phenoxy herbicides) and active ingredients (eg, 2,4-dichlorophenoxyacetic acid (2,4-D), glyphosate). The association between each herbicide and NHL risk was estimated using logistic regression to produce ORs and 95% CIs, with adjustment for sociodemographic factors, farming and other pesticides.ResultsWe found no substantial association of all NHL risk with ever-use of any herbicide (OR=1.10, 95% CI: 0.94 to 1.29), nor with herbicide groups or active ingredients. Elevations in risk were observed for NHL subtypes with longer duration of phenoxy herbicide use, such as for any phenoxy herbicide with multiple myeloma (>25.5 years, OR=1.78, 95% CI: 0.74 to 4.27), 2,4-D with diffuse large B-cell lymphoma (>25.5 years, OR=1.47, 95% CI: 0.67 to 3.21) and other (non-2,4-D) phenoxy herbicides with T-cell lymphoma (>6 years, lagged 10 years, OR=3.24, 95% CI: 1.03 to 10.2). An association between glyphosate and follicular lymphoma (lagged 10 years: OR=1.48, 95% CI: 0.98 to 2.25) was fairly consistent across analyses.ConclusionsMost of the herbicides examined were not associated with NHL risk. However, associations of phenoxy herbicides and glyphosate with particular NHL subtypes underscore the importance of estimating subtype-specific risks.
Epidemiology Occupational Health Pesticides Workplace

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