We note that the PD-L1v4/PD-L1v1 mRNA ratio did not correlate with CDK13 mRNA expression in the examined NSCLC CCLE cohort (Figure S5A), and that no correlation exists between CDK13 mRNA and PD-L1 mRNA expression in NSCLC cell lines (Spearman: r = −0.02, p = 0.64) (Figure S5B). Here, CDK13 is linked to non-small cell lung carcinoma.