Assessment of treatment-related myelodysplastic syndromes and acute myeloid leukemia in patients with non-Hodgkin lymphoma treated with tositumomab and iodine I131 tositumomab

John M. Bennett, Mark S. Kaminski, John P. Leonard, Julie M. Vose, Andrew D. Zelenetz, Susan J. Knox, Sandra Horning, Oliver W. Press, John A. Radford, Stewart M. Kroll, Robert L. Capizzi

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Abstract

The incidence of treatment-related myelodysplastic syndromes and acute myeloid leukemia (tMDSs/tAML) after tositumomab and iodine I131 tositumomab administration to previously treated and untreated patients with non-Hodgkin lymphoma (NHL) was evaluated. A total of 1071 patients were enrolled in 7 studies: 995 with relapsed/refractory low-grade NHL, ± transformation (median, 3 prior regimens [range, 1-13 regimens]) and 76 patients with previously untreated low-grade follicular NHL. A single dose of iodine tositumomab and I131 tositumomab was administered. For tMDS/tAML patients, baseline and posttherapy peripheral blood and marrow specimens were reviewed in a blinded fashion. Median follow-up was 6 years from diagnosis and 2 years from radioimmunotherapy (RIT) for previously treated patients, and 4.6 years from radioimmunotherapy for previously untreated patients. tMDS/tAML was reported in 35 (3.5%) of 995 patients (annualized incidence, 1.6%/y [95% confidence interval, 1.0%-2.0%/y]), and 52% of the tMDS/tAML diagnoses of tMDS/tAML were confirmed in a blinded review (annualized incidence of 1.1%/y [95% confidence interval, 0.7%-1.6%/y]). Of the 25 cases, 10 patients (40%) were diagnosed with tMDS/tAML prior to receiving radioimmunotherapy; 2 (8%) had no pathologic or clinical evidence to support such a diagnosis; and 13 (52%) were confirmed to have developed tMDS/tAML following RIT. This incidence is consistent with that expected on the basis of patients' prior chemotherapy for NHL. With a median follow-up approaching 5 years, no case of tMDS/tAML has been reported in any of the 76 patients receiving iodine I131 tositumomab as their initial therapy (P = .011 compared with previously treated patients).

Original languageEnglish (US)
Pages (from-to)4576-4582
Number of pages7
JournalBlood
Volume105
Issue number12
DOIs
StatePublished - Jun 15 2005

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Myelodysplastic Syndromes
Acute Myeloid Leukemia
Iodine
Non-Hodgkin's Lymphoma
Radioimmunotherapy
Chemotherapy
Refractory materials
Blood
Therapeutics
Incidence
Confidence Intervals
Follicular Lymphoma
Bone Marrow
Drug Therapy

ASJC Scopus subject areas

  • Biochemistry
  • Immunology
  • Hematology
  • Cell Biology

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Assessment of treatment-related myelodysplastic syndromes and acute myeloid leukemia in patients with non-Hodgkin lymphoma treated with tositumomab and iodine I131 tositumomab. / Bennett, John M.; Kaminski, Mark S.; Leonard, John P.; Vose, Julie M.; Zelenetz, Andrew D.; Knox, Susan J.; Horning, Sandra; Press, Oliver W.; Radford, John A.; Kroll, Stewart M.; Capizzi, Robert L.

In: Blood, Vol. 105, No. 12, 15.06.2005, p. 4576-4582.

Research output: Contribution to journalArticle

Bennett, JM, Kaminski, MS, Leonard, JP, Vose, JM, Zelenetz, AD, Knox, SJ, Horning, S, Press, OW, Radford, JA, Kroll, SM & Capizzi, RL 2005, 'Assessment of treatment-related myelodysplastic syndromes and acute myeloid leukemia in patients with non-Hodgkin lymphoma treated with tositumomab and iodine I131 tositumomab', Blood, vol. 105, no. 12, pp. 4576-4582. https://doi.org/10.1182/blood-2004-12-4690
Bennett, John M. ; Kaminski, Mark S. ; Leonard, John P. ; Vose, Julie M. ; Zelenetz, Andrew D. ; Knox, Susan J. ; Horning, Sandra ; Press, Oliver W. ; Radford, John A. ; Kroll, Stewart M. ; Capizzi, Robert L. / Assessment of treatment-related myelodysplastic syndromes and acute myeloid leukemia in patients with non-Hodgkin lymphoma treated with tositumomab and iodine I131 tositumomab. In: Blood. 2005 ; Vol. 105, No. 12. pp. 4576-4582.
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abstract = "The incidence of treatment-related myelodysplastic syndromes and acute myeloid leukemia (tMDSs/tAML) after tositumomab and iodine I131 tositumomab administration to previously treated and untreated patients with non-Hodgkin lymphoma (NHL) was evaluated. A total of 1071 patients were enrolled in 7 studies: 995 with relapsed/refractory low-grade NHL, ± transformation (median, 3 prior regimens [range, 1-13 regimens]) and 76 patients with previously untreated low-grade follicular NHL. A single dose of iodine tositumomab and I131 tositumomab was administered. For tMDS/tAML patients, baseline and posttherapy peripheral blood and marrow specimens were reviewed in a blinded fashion. Median follow-up was 6 years from diagnosis and 2 years from radioimmunotherapy (RIT) for previously treated patients, and 4.6 years from radioimmunotherapy for previously untreated patients. tMDS/tAML was reported in 35 (3.5{\%}) of 995 patients (annualized incidence, 1.6{\%}/y [95{\%} confidence interval, 1.0{\%}-2.0{\%}/y]), and 52{\%} of the tMDS/tAML diagnoses of tMDS/tAML were confirmed in a blinded review (annualized incidence of 1.1{\%}/y [95{\%} confidence interval, 0.7{\%}-1.6{\%}/y]). Of the 25 cases, 10 patients (40{\%}) were diagnosed with tMDS/tAML prior to receiving radioimmunotherapy; 2 (8{\%}) had no pathologic or clinical evidence to support such a diagnosis; and 13 (52{\%}) were confirmed to have developed tMDS/tAML following RIT. This incidence is consistent with that expected on the basis of patients' prior chemotherapy for NHL. With a median follow-up approaching 5 years, no case of tMDS/tAML has been reported in any of the 76 patients receiving iodine I131 tositumomab as their initial therapy (P = .011 compared with previously treated patients).",
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