To analyze the predictive significance of apelin on HT in acute ischemic stroke patients after ITT, Zhu et al. (2021) analyzed the data of 109 acute ischemic stroke patients that received ITT, and found that a higher HT grade was associated with lower apelin level and increased levels of interleukin-1β (IL-1β) and IL-6. Here, IL6 is linked to hematocrit.