IL17A and atherosclerosis: The above differences in the effects of the IL-23–IL-17 axis on atherosclerosis have not been elucidated and may lie in the models used in studies on the IL-23–IL-17 axis, the different periods in which atherosclerosis occurs, and the impact of other comorbid diseases in patients with atherosclerosis on the studies; or even the different types of IL-23 knockdown in the animal models.