CCND1 and head and neck squamous cell carcinoma: Together with CCND1, CTTN is reported to correlate with prognostic tumor stage and contribute to metastasis in HNSCC, often coinciding with resistance to anoikis.39–41 PFFIA1 in 11q13 is also reported in several earlier studies.42,43 We also found a copy number gain in 1p36.21.