SLC39A7 and central nervous system cancer: Through Kaplan-Meier analysis, SLC39A7 expression was found to be associated with decreased survival rates among all gliomas and different WHO grade gliomas in the CGGA database (Fig. 1f, 1i-k), and high SLC39A7 expression predicted poor survival rates among all glioma in the TCGA and Rembrandt databases (Fig. 1g-h).