CD4 and glioblastoma: Lastly, we calculated the tumoural NLR values (median of neutrophil markers expression/median of CD4+ T markers expression, as the latter is the most abundant lymphocyte cell type in brain and glioblastomas) that were correlated with peripheral NLR values, but again this was not significant (Kendall’s coefficient = −0.08, p-value = 0.464).