At the 2011 ASH Annual Meeting, prolonged treatment data were reported from 17 patients with a median duration of treatment of 17.3 months (approximately 24 cycles of every three week dosing). The overall objective response rate with extended treatment was 88 percent, including 76 percent complete remissions and 12 percent partial remissions. ADCETRIS was generally well-tolerated, with the most common adverse events being peripheral neuropathy (71 percent), upper respiratory infection (53 percent) and fatigue (47 percent). Prolonged treatment with ADCETRIS was associated with clinically meaningful durations of response without worsening of toxicity over time.
ADCETRIS is currently not approved for retreatment and extended duration beyond 16 cycles of therapy in relapsed HL and sALCL.
Lymphoma is a general term for a group of cancers that originate in the lymphatic system. There are two major categories of lymphoma: Hodgkin lymphoma and non-Hodgkin lymphoma. Hodgkin lymphoma is distinguished from other types of lymphoma by the presence of one characteristic type of cell, known as the Reed-Sternberg cell. The Reed-Sternberg cell generally expresses CD30. Systemic ALCL is an aggressive type of T-cell non-Hodgkin lymphoma that also expresses CD30.About ADCETRIS ADCETRIS (brentuximab vedotin) is an ADC comprising an anti-CD30 monoclonal antibody attached by a protease-cleavable linker to a microtubule disrupting agent, monomethyl auristatin E (MMAE), utilizing Seattle Genetics’ proprietary technology. The ADC employs a linker system that is designed to be stable in the bloodstream but to release MMAE upon internalization into CD30-expressing tumor cells. ADCETRIS was granted accelerated approval by the FDA in August 2011 and approval with conditions by Health Canada in February 2013 for two indications: (1) the treatment of patients with HL after failure of autologous stem cell transplant (ASCT) or after failure of at least two prior multi-agent chemotherapy regimens in patients who are not ASCT candidates, and (2) the treatment of patients with sALCL after failure of at least one prior multi-agent chemotherapy regimen. The indications for ADCETRIS are based on response rate. There are no data available demonstrating improvement in patient-reported outcomes or survival with ADCETRIS.
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