Abstract
PurposePrior research suggests a link between obstructive sleep apnea (OSA) and the likelihood of developing a variety of solid tumors; however, there are no studies assessing OSA and leukemia. This study is the first to identify a potential association between OSA and leukemia using data from the Korea National Health Insurance Service database. MethodsA total of 162,646 patients (≥20 years of age and without any cancer history) newly diagnosed with OSA between 2011 and 2017 were included. A control group of 813,230 subjects was selected using propensity score matching based on age and sex. The mean follow-up time was 4.4 ± 2.0 years. The primary endpoint was newly diagnosed leukemia of any type. The leukemia hazard ratio (95% confidence interval [CI]) was calculated for patients with OSA and compared with that of patients in the control group. ResultsThe incidence of leukemia among patients with OSA was significantly higher than that in the controls (1.35 [1.05–1.74]). The hazard ratio was the highest, 1.74 in those under 40 years, and gradually decreased with age, to 1.38 in those aged 40–65 years and 0.96 in those over 65. In particular, the incidence of lymphoid leukemia (2.06 [1.18–3.60]) was higher than that of myeloid (1.34 [1.00–1.81]) or unspecified leukemia (0.60 [0.20–1.58]). ConclusionOSA is associated with an increased incidence of leukemia, particularly in patients younger than 40 years of age.
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