AbbVie Inc. (NYSE: ABBV) and ImmunoGen, Inc. (NASDAQ: IMGN) today announced a definitive agreement under which AbbVie will acquire ImmunoGen, and its flagship cancer therapy ELAHERE® (mirvetuximab soravtansine-gynx), a first-in-class antibody-drug conjugate (ADC) approved for platinum-resistant ovarian cancer (PROC). The acquisition accelerates AbbVie's commercial and clinical presence in the solid tumor space. Additionally, ImmunoGen's follow-on pipeline of promising next-generation ADCs further complements AbbVie's ADC platform and existing programs.