Abstract
Opium use was recently classified as a human carcinogen for lung cancer by the International Agency for Research on Cancer. We conducted a large, multicenter case-control study evaluating the association between opium use and the risk of lung cancer. We recruited 627 cases and 3477 controls from May 2017 to July 2020. We used unconditional logistic regression analyses to estimate the odds ratios (OR) and 95% confidence intervals (CI) and measured the association between opium use and the risk of lung cancer. The ORs were adjusted for the residential place, age, gender, socioeconomic status, cigarettes, and water pipe smoking. We found a 3.6-fold risk of lung cancer for regular opium users compared to never users (95% CI: 2.9, 4.6). There was a strong dose-response association between a cumulative count of opium use and lung cancer risk. The OR for regular opium use was higher for small cell carcinoma than in other histology (8.3, 95% CI: 4.8, 14.4). The OR of developing lung cancer among opium users was higher in females (7.4, 95% CI: 3.8, 14.5) than in males (3.3, 95% CI: 2.6, 4.2). The OR for users of both opium and tobacco was 13.4 (95% CI: 10.2, 17.7) compared to nonusers of anything. The risk of developing lung cancer is higher in regular opium users, and these results strengthen the conclusions on the carcinogenicity of opium. The association is stronger for small cell carcinoma cases than in other histology.
| Original language | English |
|---|---|
| Pages (from-to) | 203-213 |
| Number of pages | 11 |
| Journal | International Journal of Cancer |
| Volume | 152 |
| Issue number | 2 |
| Early online date | 13 Aug 2022 |
| DOIs | |
| Publication status | Published - 15 Jan 2023 |
| Publication type | A1 Journal article-refereed |
Funding
Our study was funded by the National Institute for Medical Research Development (NIMAD), Iran (Grant number: 940045) and partially supported by Investigator Grant No. 24706 of Fondazione AIRC, Italy. We thank our collaborators, especially the interviewers from all 10 study centers that performed data collection carefully and provided us with high‐quality information. We thank Mrs. Vahideh Peyghambari and Elmira Ebrahimi for the biobank management.
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 3 Good Health and Well-being
Keywords
- adenocarcinoma
- Iran
- lung cancer
- opiate
- opium
- small cell
- squamous cell
Publication forum classification
- Publication forum level 2
ASJC Scopus subject areas
- Oncology
- Cancer Research
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