GSTM1 and head and neck squamous cell carcinoma: In this study, we only identified JHU029 as a BAA-derived HNSCC cell line, but it is critical to recognize that the differential tumor inhibitory effect of GSTM1 knockdown between JHU029 and two HNSCC cell lines derived from white individuals (HN12 and SCC9), may depend on the cellular context.