Mirvetuximab soravtansine (IMGN853) solution is an anti-folate receptor α (FRα) antibody drug-conjugate (ADC) consisting of the cytotoxic maytansinoid, DM4, covalently linked to the humanized monoclonal antibody M9346A, and the drug-linker conjugate for ADC is sulfo-SPDB-DM4 (HY-101141). Mirvetuximab soravtansine selectively binds to folate receptor 1 (FOLR1). Mirvetuximab soravtansine has an anti-proliferative effect via growth arrest and augmented DNA damage.

Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to 24 months.
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20°C. Generally, these will be useable for up to one month. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.