After THC treatment, a decrease was observed in the level of six cytokines in serum samples, including IL-6 and TNF-α, as well as chemokine (C-C motif) ligand 2 (CCL2), known for its unfavorable effects on tumor prognosis (Jin et al., 2021), and reviewed elsewhere (Xu et al., 2021). Here, CCL2 is linked to neoplasm.