CLDN1 and head and neck squamous cell carcinoma: Both CLDN1 and BCL2L1 showed significantly increased expression (p < 0.0001) by immunohistochemistry in HNSCC compared to normal tissues and PPOL (shown in Supplementary Data S17) indicating that correlation of SCNA with transcript expression in integrative analyses may not be a reliable surrogate indicator of functional importance of a gene.