Short-course R-CHOP followed by 90Y-Ibritumomab tiuxetan in previously untreated high-risk elderly diffuse large B-cell lymphoma patients: 7-year long-term results

Abstract Introduction: Patients with limited stage aggressive B-cell non-Hodgkin lymphoma (LS-NHL) and at least one stage-modified adverse risk factor have an excessive relapse rate leading to a 5-year overall survival (OS) of 50-77% and 10-year OS of 0-50%. In SWOG S0014 we have shown that the addition of rituximab to 3 cycles of CHOP plus involved field radiation therapy (IFRT) resulted in an improved estimated 4-year progression-free survival (PFS) of 88% and OS of 92%. Relapses were largely systemic (5 of 6 evaluable) and continued to be seen with longer follow-up. Ibritumomab tiuxetan (Zevalin ®) is a radiolabeled anti-CD20 antibody that has excellent single agent activity in diffuse large B-cell lymphoma and could prevent systemic relapse of disease. We now report long term results of SWOG S0313, a phase II study of ibritumomab tiuxetan consolidation after 3 cycles of CHOP plus IFRT in patients with LS-NHL. Methods: Patients with LS-NHL and at least one stage-modified adverse risk factor (non-bulky stage II, age > 60 years, elevated LDH, or WHO performance status of 2) were treated with CHOP on days 1, 22, and 43, followed 3 weeks later by 40-50 Gy of IFRT. Ibritumomab tiuxetan regimen was initiated 3 – 6 weeks following IFRT. Results: Forty-six patients were registered and eligible, with median follow-up of 7.3 years. Median age was 61, 37% of patients had elevated LDH, and 20% had systemic symptoms. Grade 4 adverse events occurring more than once included neutropenia (8 patients), leukopenia (5), and lymphopenia (2). Febrile neutropenia was observed in 4 patients. No cases of treatment-related myeloid neoplasms were noted. Eleven patients progressed and 8 patients died. The PFS estimate is 89% at 2 years, 82% at 5 years, and 75% at 7 years. OS estimate is 91% at 2 years, 87% at 5 years, and 82% at 7 years. These outcomes compare favorably to matched cohorts on prior SWOG trials, with 7-year PFS estimate of 68% on S0014 and 65% on S8736 (original pre-Rituximab trial); and 7-year OS estimate of 80% on S0014 and 73% on S8736 cohorts. Conclusions: Patients with high-risk LS-NHL treated with 3 cycles of CHOP plus IFRT followed by ibritumomab tiuxetan consolidation had outcomes that compare favorably to our historical experience. A US cooperative group study of R-CHOP and response-adapted IFRT followed by consolidative ibritumomab tiuxetan is ongoing. Disclosures Off Label Use: ibritumomab tiuxetan in diffuse large B-cell lymphoma.

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Phase II Trial of Short-Course R-Chop Followed by 90Y-Ibritumomab Tiuxetan in Previously Untreated High-Risk Elderly Diffuse Large B-Cell Lymphoma Patients

Clinical Cancer Research ◽

10.1158/1078-0432.ccr-10-0162 ◽

2010 ◽

Vol 16 (15) ◽

pp. 3998-4004 ◽

Cited By ~ 42

Author(s):

Pier Luigi Zinzani ◽

Giuseppe Rossi ◽

Silvia Franceschetti ◽

Barbara Botto ◽

Alice Di Rocco ◽

...

Keyword(s):

High Risk ◽

B Cell ◽

Phase Ii ◽

Phase Ii Trial ◽

Cell Lymphoma ◽

B Cell Lymphoma ◽

Ibritumomab Tiuxetan ◽

Large B Cell Lymphoma ◽

Short Course ◽

Large B Cell

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Long-Term Results of the R-CHOP Study in the Treatment of Elderly Patients With Diffuse Large B-Cell Lymphoma: A Study by the Groupe d'Etude des Lymphomes de l'Adulte

Journal of Clinical Oncology ◽

10.1200/jco.2005.09.131 ◽

2005 ◽

Vol 23 (18) ◽

pp. 4117-4126 ◽

Cited By ~ 989

Author(s):

P. Feugier ◽

A. Van Hoof ◽

C. Sebban ◽

P. Solal-Celigny ◽

R. Bouabdallah ◽

...

Keyword(s):

Elderly Patients ◽

B Cell ◽

Cell Lymphoma ◽

B Cell Lymphoma ◽

Long Term Results ◽

Free Survival ◽

Large B Cell Lymphoma ◽

Large B Cell

Purpose To analyze the long-term outcome of patients included in the Lymphome Non Hodgkinien study 98-5 (LNH98-5) comparing cyclophosphamide, doxorubicin, vincristine, and prednisone (CHOP) to rituximab plus CHOP (R-CHOP) in elderly patients with diffuse large B-cell lymphoma. Patients and Methods LNH98-5 was a randomized study that included 399 previously untreated patients, age 60 to 80 years, with diffuse large B-cell lymphoma. Patients received eight cycles of classical CHOP (cyclophosphamide 750 mg/m2, doxorubicin 50 mg/m2, vincristine 1.4 mg/m2, and prednisone 40 mg/m2 for 5 days) every 3 weeks. In R-CHOP, rituximab 375 mg/m2 was administered the same day as CHOP. Survivals were analyzed using the intent-to-treat principle. Results Median follow-up is 5 years at present. Event-free survival, progression-free survival, disease-free survival, and overall survival remain statistically significant in favor of the combination of R-CHOP (P = .00002, P < .00001, P < .00031, and P < .0073, respectively, in the log-rank test). Patients with low-risk or high-risk lymphoma according to the age-adjusted International Prognostic Index have longer survivals if treated with the combination. No long-term toxicity appeared to be associated with the R-CHOP combination. Conclusion Using the combination of R-CHOP leads to significant improvement of the outcome of elderly patients with diffuse large B-cell lymphoma, with significant survival benefit maintained during a 5-year follow-up. This combination should become the standard for treating these patients.

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