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Int J Hematol. 2013 Apr;97(4):456-64. doi: 10.1007/s12185-013-1275-2. Epub 2013 Mar 5.

Incidence of sinusoidal obstruction syndrome following Mylotarg (gemtuzumab ozogamicin): a prospective observational study of 482 patients in routine clinical practice.

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1
Memorial Sloan Kettering Cancer Center, Weill Cornell Medical College, 1275 York Ave.,New York, NY 10065, USA. tallmanm@mskcc.org

Abstract

The purpose of this prospective observational study was to determine the incidence of hepatic sinusoidal obstruction syndrome (SOS), following gemtuzumab ozogamicin (GO) therapy in routine clinical practice. Patients receiving GO for acute myeloid leukemia (AML) were eligible. Assessments were requested to be performed weekly for 6 weeks after the start of GO therapy or 4 weeks after the last dose (whichever was later), and after 6 months. The primary outcome variable was the incidence of SOS as judged by a panel of independent experts. A total of 512 patients were enrolled at 54 US centers and 482 were evaluable. The incidence of SOS in this study population was 9.1 % (44/482; 95 % confidence interval 6.9-12.0 %). Of the 44 patients classified as having SOS, 8 were mild, 17 moderate, and 19 severe; 33 died within 6 months (20 of disease progression and 13 of SOS and multiorgan failure). Most (68 %) patients in the study died within 6 months; most of these deaths (73 %) were due to progression of AML. Serious adverse events occurred in 85 % of patients, most (81 %) due to AML, febrile neutropenia, pyrexia, and sepsis. GO administered in routine clinical practice carries an overall 9.1 % risk of SOS and a 2.7 % risk of death from SOS and multiorgan failure. No risk factors were identified for the development of SOS.

PMID:
23460018
DOI:
10.1007/s12185-013-1275-2
[Indexed for MEDLINE]
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