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To examine the association between depressive symptoms, leukocyte telomere length–a marker of cellular ageing, and survival amongst lung cancer patients. Patients with non-small cell lung cancer were recruited from a university-affiliated cancer center clinic. Patients ( N  = 67) reported on depressive symptoms and provided a blood sample for leukocyte telomere length assessment at baseline and at a 3-month follow-up. Survival status was tracked over 3 years. Age at diagnosis and depressive symptoms, as measured by the CES-D, were associated with shorter leukocyte telomere length ( p  &lt; .05), although only age at diagnosis contributed statistical significance to the model. Depressive symptoms predicted shorter survival from date of diagnosis ( p  &lt; .01). Patients who reported experiencing clinically meaningful levels of depressive symptoms (CES-D scores ≥ 16) demonstrated shorter survival than those who reported sub-clinical levels of depressive symptoms ( p  &lt; .05). Leukocyte telomere length did not emerge as a predictor of shorter survival. Clinically meaningful levels of depressive symptoms are associated with shorter survival amongst lung cancer patients. These findings support the on-going efforts to screen all cancer patients for low mood and to investigate mechanisms linking depressive symptoms and shorter survival in cancer contexts.

Depressive symptoms and shorter survival in lung cancer: the role of leukocyte telomere length