Multiple Myeloma Clinical Practice Guidelines in Oncology
NCCN Categories of Evidence and Consensus
Category 1: The recommendation is based on high-level evidence (e.g., randomized controlled trials) and there is uniform NCCN consensus.
Category 2A: The recommendation is based on lower-level evidence and there is uniform NCCN consensus.
Category 2B: The recommendation is based on lower-level evidence and there is nonuniform NCCN consensus (but no major disagreement).
Category 3: The recommendation is based on any level of evidence but reflects major disagreement.
All recommendations are category 2A unless otherwise noted.
Clinical trials: The NCCN believes that the best management for any cancer patient is in a clinical trial. Participation in clinical trials is especially encouraged.
Multiple myeloma (MM) is a malignant neoplasm of plasma cells that accumulate in bone marrow, leading to bone destruction and marrow failure. The American Cancer Society estimates that 20,580 new cases of MM will occur in the United States in 2009, including 11,680 in men and 8900 in women, with an estimated 10,580 deaths.1 The mean age of affected individuals is 62 years for men (75% > 70 years) and 61 years for women (79% > 70 years). The treatment of MM has dramatically improved over the past decade. The 5-year survival rate reported in the Surveillance Epidemiology and End Results database has increased from 25% in 1975 to 34% in 2003 because of the availability of newer and more effective treatment options.2,3
MM is typically sensitive to various cytotoxic drugs, both as initial treatment...