RT Journal Article SR Electronic T1 The INTEROCC case-control study: risk of meningioma and occupational exposure to selected combustion products, dusts and other chemical agents JF Occupational and Environmental Medicine JO Occup Environ Med FD BMJ Publishing Group Ltd SP 12 OP 22 DO 10.1136/oemed-2016-104280 VO 75 IS 1 A1 Damien M McElvenny A1 Martie van Tongeren A1 Michelle C Turner A1 Geza Benke A1 Jordi Figuerola A1 Sarah Fleming A1 Martine Hours A1 Laurel Kincl A1 Daniel Krewski A1 Dave McLean A1 Marie-Élise Parent A1 Lesley Richardson A1 Brigitte Schlehofer A1 Klaus Schlaefer A1 Siegal Sadetzki A1 Joachim Schüz A1 Jack Siemiatycki A1 Elisabeth Cardis YR 2018 UL http://oem.bmj.com/content/75/1/12.abstract AB Background Little is known about occupational risk factors for meningioma.Objectives To study whether risk of meningioma is associated with several occupational exposures, including selected combustion products, dusts and other chemical agents.Methods The INTEROCC study was an international case-control study of brain cancer conducted in seven countries. Data collection by interview included lifetime occupational histories. A job exposure matrix was used to derive estimates of exposure for the 12 agents. ORs for ever versus never exposed and for exposure-response using duration of exposure and cumulative exposure were derived using conditional logistic regression stratified by sex, age group, country/region, adjusted for education.Results These analyses included 1906 cases and 5565 controls. For 11 of the 12 agents, no excess risk was found for ever exposed. For ever exposure to oil mists, an elevated OR of 1.57 (95% CI 1.10 to 2.22, 51 exposed cases) was found. Statistically significant exposure-response relationships were observed with cumulative exposure (p=0.01) and duration of exposure (p=0.04). Among women, there were also significant trends for cumulative and duration of exposure to asbestos and excesses in the highest exposure categories for formaldehyde.Conclusions Most agents examined did not provoke excess risks of meningioma. The main finding from this study is that it is the first study to identify a statistical association between exposure to oil mists and meningioma. This may be a chance finding or could be due to confounding with iron exposure and further research is required to understand whether the relationship is causal.