HSP90AA1 and lung cancer: High HSP90 expression levels have been correlated with poor prognosis in all subtypes of breast cancer patients (Pick et al, 2007; Dimas et al, 2018), several independent cohorts of non‐small cell lung cancer (NSCLC) patients (Gallegos Ruiz et al, 2008), and in colorectal cancer (Kim et al, 2019).