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Data were extracted from International Agency for Research on Cancer (IARC) Monographs covering the years 1971\u20132017, using specific criteria to ensure occupational relevance and provide high confidence in the causality of observed exposure-disease associations. Selected agents were substances, mixtures or types of radiation classified in IARC Group 1 with \u2018sufficient evidence of carcinogenicity\u2019 in humans from studies of exposed workers and evidence of occupational exposure documented in the pertinent monograph. The number of known occupational carcinogens has increased over time: 47 agents were identified as known occupational carcinogens in 2017 compared with 28 in 2004. These estimates are conservative and likely underestimate the number of carcinogenic agents present in workplaces. Exposure to these agents causes a wide range of cancers; cancers of the lung and other respiratory sites, followed by skin, account for the largest proportion. The dominant routes of exposure are inhalation and dermal contact. Important progress has been made in identifying occupational carcinogens; nevertheless, there is an ongoing need for research on the causes of work-related cancer. Most workplace exposures have not been evaluated for their carcinogenic potential due to inadequate epidemiologic evidence and a paucity of quantitative exposure data.<\/jats:p>","DOI":"10.1136\/oemed-2017-104944","type":"journal-article","created":{"date-parts":[[2018,5,16]],"date-time":"2018-05-16T12:20:24Z","timestamp":1526473224000},"page":"593-603","update-policy":"https:\/\/doi.org\/10.1136\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":283,"title":["Identifying occupational carcinogens: an update from the IARC Monographs"],"prefix":"10.1136","volume":"75","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-3297-5200","authenticated-orcid":false,"given":"Dana","family":"Loomis","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Neela","family":"Guha","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1502-2694","authenticated-orcid":false,"given":"Amy L","family":"Hall","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kurt","family":"Straif","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"239","published-online":{"date-parts":[[2018,5,16]]},"reference":[{"key":"2020050723012183000_75.8.593.1","first-page":"68","article-title":"Percivall Pott (1714-1788) and chimney sweepers\u2019 cancer of the scrotum","volume":"14","author":"Brown","year":"1957","journal-title":"Br J Ind Med"},{"key":"2020050723012183000_75.8.593.2","doi-asserted-by":"crossref","first-page":"602","DOI":"10.1016\/S1470-2045(09)70363-8","article-title":"Identifying carcinogenic agents in the workplace and environment","volume":"11","author":"Cogliano","year":"2010","journal-title":"Lancet Oncol"},{"key":"2020050723012183000_75.8.593.3","unstructured":"Doll R , Peto R . 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