argenx announced interim data from the Phase 2 CULMINATE trial of cusatuzumab in development with Cilag GmbH International, an affiliate of Janssen. The Phase 2 CULMINATE trial (NCT04023526) is evaluating cusatuzumab in combination with azacitidine in newly-diagnosed, elderly AML patients who are ineligible for intensive chemotherapy. A total of 103 patients were randomized to receive either 10mg/kg (n=51) or 20mg/kg (n=52) cusatuzumab plus azacitidine as part of a dose identification. The 20mg/kg dose has been selected for ongoing and future trials. A pre-planned interim analysis was conducted of the 52 patients (46.2% adverse ELN risk classification) receiving 20mg/kg cusatuzumab plus azacitidine treatment (intent-to-treat population (ITT)). The results from the ITT analysis showed a complete remission (CR) rate of 27% (14/52) and composite complete remission (CRc), including CRs with incomplete hematologic recovery, rate of 40% (21/52). The 30-day mortality rate of the ITT population was 9.6% (5/52). In a cohort where patients received at least two treatment cycles (20mg/kg cusatuzumab plus azacitidine), 42% (14/33) achieved CR and 64% (21/33) achieved CRc. Cusatuzumab was observed to be well-tolerated and the safety profile was consistent with prior studies. Final results from the CULMINATE trial will be presented in a peer-reviewed forum. The decision to initiate additional studies in the development of cusatuzumab, under the collaboration, will be determined following review of data from the ongoing Phase 1b ELEVATE trial (NCT04150887), which is evaluating cusatuzumab in combination with venetoclax and azacitidine in newly-diagnosed, elderly patients with AML who are ineligible for intensive chemotherapy.