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Agricultural exposure and risk of soft tissue sarcomas and gastrointestinal stromal sarcoma in the AGRIculture and CANcer (AGRICAN) cohort
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International audience. BACKGROUND: Sarcomas are a heterogeneous group of tumors whose incidence is nearly 5 per 100 000 inhabitants in Europe. Their causes are poorly understood, although occupational exposures (especially farming and pesticides) are suspected. METHODS: The AGRICAN cohort is a prospective study of 181,842 individuals enrolled in 2005-2007 who completed an enrolment questionnaire with data on lifelong agricultural exposure. Associations between agricultural exposure and sarcoma overall, GIST (gastro-intestinal stromal tumors) and myomatous and fibrous sarcoma together, were analyzed with a Cox model. RESULTS: Until 2015, 188 incident cases of sarcoma were identified. Increased risks were observed (1) among cattle farmers working < 10 years (HR(<10years) =2.45, 95%CI 1.36-4.43) and breeding ≥ 50 livestock (HR(≥50 animals) =3.84, 95%CI 1.60-9.22), especially if involved in animal care and building disinfection, (2) in greenhouse production (HR=1.82, 95%CI 1.01-3.30), and (3) in field-grown vegetable production (HR=1.49, 95%CI 0.96-2.32). Concerning histological subtypes, GIST were positively associated with pesticide use in vineyards (HR=2.24, 95%CI 0.95-5.30). For myomatous and fibrous sarcoma, the only increase was seen in field-grown vegetable production (HR=2.37, 95%CI 1.16-4.85). CONCLUSION: In AGRICAN, the risk of sarcomas was increased in several farming activities with differences according to histological subtype.
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