Meanwhile, 101 articles were excluded for the following reasons: in vitro studies (n = 19), no data on IL-5 (n = 54), gene expression/polymorphism studies (n = 11), review articles (n = 5), in vivo studies (n = 3), inability to extract IL-5 data (n = 2), not participants of interest (n = 2), poster/news (n = 2), study using the same groups of participants (n = 2), and IL-5 measurement was performed after treatment of malaria (n = 1) (Fig. 1). The gene discussed is IL5; the disease is malaria.