Nevertheless, low TTC17 expression exhibited opposite effects on RFS in kidney renal papillary cell carcinoma and OS in cervical squamous cell carcinoma, kidney renal clear cell carcinoma, kidney renal papillary cell carcinoma, and pheochromocytoma and paraganglioma (Fig. 2d, Additional file 2: Fig. S2e-h). This evidence concerns the gene TTC17 and paraganglioma.