Fig. 4: Kaplan–Meier OS and PFS analyses in HPV-independent SCC.

a TP53 mutation versus no TP53 mutation in all cases, b different combinations of TP53 and PIK3CA mutational status in all cases, and c PIK3CA mutation among cases with TP53 mutations.
a TP53 mutation versus no TP53 mutation in all cases, b different combinations of TP53 and PIK3CA mutational status in all cases, and c PIK3CA mutation among cases with TP53 mutations.