BCG immunotherapy in chronic myelocytic leukemia.

In 16 patients with chronic myelocytic leukemia an attempt to retard the myeoblastic transformation was carried out by means of repeated BCG administration in the period of remissions resulting from chemotherapy. Vaccinations were repeated at intervals of 4 weeks with doses of 2 mg of Mycobacteria by scarification. The time of uninterrupted remissions maintained with BCG vaccinations only ranged from 2 to 28 months, on the average 7.