📋 APTEVO THERAPEUTICS INC. (APVO) - Clinical Trial Update
Filing Date: 2026-09-03
Accepted: 2026-09-03 08:15:14
Event Type: Clinical Trial Update
Event Details:
APTEVO THERAPEUTICS INC. (APVO) Announces Clinical Trial Update
APTEVO THERAPEUTICS INC. (APVO) provided an update on its clinical development programs.
Clinical Development Highlights:
Drug Program: treatment, mipletamig
Collaboration: Clinical Benefit Rate
planned for 1H27 to determine next steps.About the RAINIER TrialRAINIER, a frontline AML study, is a Phase 1b/2 dose optimization, multi-center, multi-cohort, open-label study. Subjects are adults aged 18 or older, newly diagnosed with AML who are not eligible for intensive induction chemotherapy. RAINIER will be conducted in two parts. First, a Phase 1b dose optimization study in frontline AML patients followed by a Phase 2 study. The Phase 1b trial consists of 28-day cycles of treatment across multiple, sequential cohorts. About MipletamigAptevo's wholly owned lead proprietary drug candidate, mipletamig, is being evaluated for the treatment of AML. Mipletamig is designed to redirect the patient’s immune system to destroy leukemic cells and leukemic stem cells expressing CD123, which is overexpressed on leukemic stem cells and AML blasts. Mipletamig is designed to engage both leukemic cells and T cells of the immune system and bring them closely together to trigger the destruction of leukemic cells. Mipletamig is purposefully designed to reduce the likelihood and severity of cytokine release syndrome by using the CRIS-7-derived CD3 binding pathway, an approach that differentiates Aptevo from competitors. About AptevoAptevo Therapeutics Inc. (Nasdaq: APVO) is a clinical-stage biotechnology company focused on developing novel bispecific and trispecific immunotherapies for the treatment of cancer. The Company’s lead clinical candidate, mipletamig, is currently being evaluated in RAINIER, a two-part Phase 1b/2 trial for the treatment of frontline acute myeloid leukemia in combination with standard-of-care venetoclax + azacitidine. Mipletamig has received orphan drug designation for AML under the Orphan Drug Act.In the solid tumor space, Aptevo’s lead assets are focused on well-established targets to progress novel immunomodulatory platform backbones that are conditionally active only in the tumor.This work includes advancing APVO451, a targeted trispecific immunotherapy candidate for solid tumors, and a strategic collaboration with Niowave to develop up to three radiopharmaceutical oncology programs. The first radiopharmaceutical program is expected to target nectin-4, a tumor-associated antigen expressed in multiple solid tumor types. Both preclinical molecules are expected to advance into investigational new drug (IND)-enabling studies in 2027
🔬 Clinical Development Pipeline (APTEVO THERAPEUTICS INC.):
📋 APTEVO THERAPEUTICS INC. (APVO) - Clinical Trial Update
Filing Date: 2026-09-03
Accepted: 2026-09-03 08:15:14
Event Type: Clinical Trial Update
Event Details:
🔬 Clinical Development Pipeline (APTEVO THERAPEUTICS INC.):
💼 Business Developments:
Structured Data: