AXL and small cell lung carcinoma: Notably, eight of such proteins were found to be overexpressed in SCLC‐Y, including probable glutathione peroxidase 8 (GPX8), pyruvate dehydrogenase kinase isoform 2 (PDK2) and tyrosine–protein kinase receptor UFO (AXL) (Figures 6B and S9a).