A Phase I Study of the Chimeric Anti-CD40 Monoclonal Antibody ChiLob 7/4 to Treat Advanced Malignancies Refractory to Conventional Anti-cancer Treatment

3 patients will receive treatment at each dose level. Escalation from one treatment dose level to another will only be permitted once at least 3 patients have completed treatment without any DLTs. Starting weekly dose of Chi Lob 7/4 will be 0.5mg (giving a total dose per patient of 2mg divided over 4 weeks). Subsequent individual, weekly dose levels of 1.6mg, 5mg, 16mg, 50mg and 160mg (resulting in total patient doses of 6.4mg, 20mg, 64mg 200mg and 640mg respectively). Further dose escalation can continue to 240mg and 320mg dose per week (resulting in 960mg and 1280mg. Patients may be treated at a lower or intermediate dose level to define the MTD/BAD.