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9/11 responders show increased risk of leukemia, other cancers

Key clinical point: New data suggest an increased risk of leukemia among responders who worked at the World Trade Center site after the attacks on Sept. 11, 2001.

Major finding: Compared with the general population, responders had a significantly higher incidence of all cancers combined (standardized incidence ratio, 1.09). prostate cancer (SIR, 1.25), thyroid cancer (SIR, 2.19), and leukemia (SIR, 1.41).

Study details: Analysis of data on 28,729 responders enrolled in the World Trade Center Health Program General Responder Cohort.

Disclosures: This research was supported by the Centers for Disease Control and Prevention/National Institute for Occupational Safety and Health. The researchers disclosed no conflicts of interest.


Shapiro MZ et al. JNCI Cancer Spectr. 2019 Nov 6. doi: 10.1093/jncics/pkz090.