NSD1 and neoplasm: Using NSD1 RNA expression as a measure of NSD1 proficiency, we next validated the correlation of NSD1 expression with tumor infiltrating T cell levels in three independent primary HNSC population data sets, including the aforementioned GSE33232 data set and two additional datasets: GSE65858 (n = 253)41 and GSE39366 (n = 138)26.