CIP2A and head and neck squamous cell carcinoma: As shown in previous studies, CIP2A is overexpressed in several cancer types and is associated with reduced survival in some conditions, such as serous ovarian cancer (Böckelman et al., 2011), gastric cancer (Khanna et al., 2009), non-small-cell lung cancer (Dong et al., 2011), and head and neck squamous cell carcinoma (HNSCC) (Böckelman et al., 2011).