OUTLINE: This is an open label, single arm, multicenter study. Patients receive 1 course of CMA-676 IV over 2 hours on day 1 followed by a 6 hour observation period. Patients may receive 1 additional course of therapy 15 to 28 days later. There is a 28 day follow-up period after the last dose of study medication. Patients are followed for an additional 6 months, then every 3 months for 18 months, and then every 6 months until relapse and/or death.