Originally approved in 2017, the programmed death ligand 1 inhibitor caries previously approved indications for non–small cell lung cancer, biliary tract cancer, and hepatocellular carcinoma.
Approval of the new indication was based on the phase 3 DUO-E trial, which included 95 women with newly diagnosed advanced or recurrent dMMR endometrial cancer. Patients were randomized to durvalumab 1120 mg or placebo with carboplatin plus paclitaxel every 3 weeks for a maximum of six cycles followed by durvalumab 1500 mg every 4 weeks until disease progression.
Median progression-free survival (PFS) was 7 months in the placebo arm but not reached in the durvalumab group. Overall survival outcomes were immature at the PFS analysis.
A quarter or more of durvalumab patients experienced peripheral neuropathy, musculoskeletal pain, nausea, alopecia, fatigue, abdominal pain, constipation, rash, diarrhea, vomiting, and cough.
The recommended treatment regimen for dMMR endometrial cancer in women who weigh ≥ 30 kg is 1120 mg with carboplatin plus paclitaxel every 3 weeks for six cycles, followed by single-agent durvalumab 1500 mg every 4 weeks.
The price of 2.4 mL of durvalumab at a concentration of 50 mg/mL is $1027, according to drugs.com.
A version of this article appeared on Medscape.com.