Abstract
Background: Complete response has been considered a surrogate for favorable long-term outcome in multiple myeloma. Data on the impact of the duration of response on prognosis are lacking. Patients and methods: Of the 899 patients enrolled in Total Therapy trials (Total Therapy 1, N=231; Total Therapy 2, N=668), 254 survived for > 5 years. The prognostic impact of continuous (Rc) versus discontinuous (Rd) 4-year remission after 5-year survival was examined along with laboratory features present at baseline and at 5 years. Results: Most baseline prognostic features were evenly distributed among Rc and Rd groups; however, a greater proportion of Rc patients were enrolled in Total Therapy 2 (60%) compared with Rd (19%; P < 0.001). Twelve-year survival (7 years after the 5-year landmark) was 66% with Rc and only 30% with Rd. Hypodiploidy and deletion 13, present in 24 patients at baseline, were associated with a 12-year survival of only 20%. Among the 200 patients lacking these cytogenetic abnormalities, Rc (n=141) defined a superior 12-year survival rate of 70% versus 35% among those with Rd (n=59). Initial quality of response (complete response) or having received the scheduled tandem transplantations did not affect post-5-year survival. Conclusion: Five-year Rc appears to be an important prerequisite for prolonged subsequent overall survival.
Original language | English (US) |
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Pages (from-to) | 469-474 |
Number of pages | 6 |
Journal | Clinical Lymphoma and Myeloma |
Volume | 6 |
Issue number | 6 |
DOIs | |
State | Published - May 2006 |
Keywords
- Chemotherapy
- Cytogenetic abnormality
- Hypodiploidy
- Immunomodulatory agents
- Total Therapy
ASJC Scopus subject areas
- Hematology
- Oncology
- Cancer Research