KL and non-small cell lung carcinoma: Histone Kla is associated with poor prognosis in melanoma and other cancers.[17] The abundance of non‐histone Kla prompted us to investigate its impact on NSCLC, western blotting revealed inconsistencies in histone (≈20 kDa) and non‐histone Kla levels (red arrow in Figure S4A, Supporting Information).