Among them, we focused on the heat shock protein 90 alpha family class A member 1 (HSP90AA1) gene coding for the heat shock protein 90 alpha (Hsp90α), the stress-inducible isoform of the molecular chaperone Hsp90, which interacts and supports numerous proteins that promote oncogenesis and is associated with each hallmark of cancer [30]. The gene discussed is HSP90AA1; the disease is cancer.