Injected lesions must be palpable and biopsiable at the time of injection, and biopsied after 7-14 days. Patients will not receive an alternative therapy during the period comprising from first and second biopsy. BO-112 will be administered at a starting dose. Upon confirmation of the safety profile of the starting dose and evaluation of the pharmacokinetic (PK) profile, three additional dose levels are expected to be tested.