In this study, we investigated the abnormal expression of chemokines in the CSF of patients with neurosyphilis in more detail, by using a semi‐quantitative chemokine array that includes overlapping components with that used by Wang et al, but also tests for additional chemokines, such as CCL24 and CXCL7, which have not been previously tested. The gene discussed is PPBP; the disease is neurosyphilis.