Fig 2. Kaplan-Meier survival curves for patients with advanced squamous cell carcinoma of the head and neck with respect to expression of Gli-1 and Gli–2.

Improved overall survival correlates significantly with overexpression of Gli-1 (p = 0.04) (panel a) as well as with overexpression of Gli-2 (p = 0.02) (panel b). Overexpression of Gli-2 is significantly associated with prolonged disease-free survival (p = 0.04) (panel c).