CHMP recommends Halaven (eribulin mesylate) for treatment of adult patients with unresectable liposarcomas.-Eisai

Eisai Co., Ltd has announced that its European regional headquarters Eisai Europe Ltd. has received a positive opinion from the European Medicines Agency's Committee for Medicinal Products for Human Use (CHMP) on anticancer agent Halaven (eribulin mesylate) for treatment of adult patients with unresectable liposarcomas who have received prior anthracycline containing therapy (unless unsuitable) for advanced or metastatic disease. Halaven is the first and only single agent to demonstrate an overall survival (OS) benefit in a Phase III trial in patients with advanced, recurrent or metastatic soft tissue sarcoma (liposarcoma or leiomyosarcoma). Following approval for use in the treatment of metastatic breast cancer in the EU, this marks the second indication for which Halaven has received a positive CHMP opinion based on a statistically significant extension of OS.

Comment: The CHMP's positive opinion is based on the results from Phase III study (Study 309) comparing the efficacy and safety of Halaven versus dacarbazine in 452 patients (aged 18 or over) with locally advanced or recurrent and metastatic soft tissue sarcoma (liposarcoma or leiomyosarcoma) who had disease progression following standard therapies which must have included an anthracycline and at least one other additional regimen. Halaven demonstrated a statistically significant extension in the study's primary endpoint of OS over the comparator treatment dacarbazine (Halaven median OS: 13.5 months vs dacarbazine median OS: 11.5 months; Hazard Ratio (HR) 0.77 [95% CI=0.62-0.95], p=0.0169). For patients with liposarcoma, Halaven demonstrated a significant improvement in OS over dacarbazine (Halaven, median OS: 15.6 months vs dacarbazine, median OS: 8.4 months; HR 0.51 [95% CI=0.35-0.75]).