FGFR1 and neoplasm: In total, 257 patients had assessable FGFR1 staining in both tumor-adjacent and tumor tissue, of whom 98 (38%) had stable FGFR1 levels that were maintained between tumor-adjacent and tumor tissues, 149 (58%) displayed higher FGFR1 levels in tumor tissue compared with tumor-adjacent tissue, while 10 (4%) had lower FGFR1 levels in tumor relative to tumor-adjacent tissue (Figure 2C).