ADC Therapeutics SARL is aiming to file a biologics license application for its antibody-drug conjugate loncastuximab tesirine (ADCT-402, aka Lonca) in the second half of 2020 following presentation of Phase II data on 12 June showing solid overall response rates in third-line diffuse large B-cell lymphoma patients, including in patients who haven’t responded to prior therapy.
The ADC, which combines a CD19-targeting antibody with a second-generation pyrrolobenzodiazepine dimer delivery mechanism, yielded a 48.3% (70/145) overall response rate in the 145-patient LOTIS 2 trial, along with a 24.1% (35/145) complete response rate. Reported during the virtual European Hematology Association meeting, Lonca also produced a 37
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