LAMP1 and neoplasm: Upon co-culture of peripheral blood mononuclear cells with K562 tumour cells, the exercise group showed increased expression of the degranulation marker CD107a on NK cells (β = 1038.5, 95%CI = 56.9; 2020.2, p = 0.04), and a trend towards increased tumour cell lysis in vitro (β = 18.8%, 95%CI = −3.9; 41.5, p = 0.10) compared to the control group.