Supporting this, a study has combined the use of olaparib and B02 (a potent Rad51 inhibitor), to show radiosensitisation of non-small cell lung cancer (A549) and pancreatic cancer (KP4 and PANC1) cells to both low-LET photons and relatively high LET protons (1.3 keV; 25 keV/μm) [57]. The gene discussed is RAD51; the disease is non-small cell lung carcinoma.