Of note, squamous cell carcinoma cases had enrichment of fusions involving FGFR1 (0.9% vs 0.3%), FGFR3 (0.8% vs 0.2%), and PIK3CA (0.5% vs <0.01%) (Figure 1C; Supplementary Table S1). Here, FGFR3 is linked to squamous cell carcinoma.