Obinutuzumab (MS4A1/CD20) - Research Grade Biosimilar

Obinutuzumab is a humanized monoclonal antibody used as a combination treatment with chlorambucil to treat patients with untreated chronic lymphocytic leukemia. It was approved by the FDA in November 2013 and is marketed under the brand name Gazyva. There is a black box warning of fatal Hepatitis B Virus (HBV) reactivation and fatal Progressive Multifocal Leukoencephalopathy (PML) .

Use a manual defrost freezer and avoid repeated freeze thaw cycles. Store at 2 to 8 ˚ C for 1-2 weeks. Store at -20 ˚ C for 12 months. Store at -80 ˚ C for long term storage.