FKBP4 and lung cancer: The heteromeric complex consisting of heat shock protein 90 (HSP90), its co-chaperone p23, and FK506-binding protein 52 (FKBP52, also known as peptidyl-prolyl cis-trans isomerase FKBP4) was reported to bring TERT into the nucleus along microtubules in H1299 lung cancer cells, by virtue of the interaction between FKBP52 and the dynein/dynactin motor [24,25].