RecruitingPhase 1Diagnostic testCombination of 177Lu-TLX250 and Peposertib in Patients With Carbonic Anhydrase IX -Expressing Solid TumorsThis is an open label, single-arm, multicentre dose escalation (Part 1) and dose expansion (Part 2) study to evaluate different combinations of 3 radioactive dose levels of 177Lu-TLX250 administered intravenously with 3 different doses of peposertib in patients with CAIX-expressing solid tumors.