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Phase 1/2Data readout

Mipletamig (APVO436) +/- Venetoclax + Azacitidine

Acute myeloid leukemia (AML)

APVOAptevo Therapeutics
Expected catalystDecember 31, 2026Company guidance: Dec 31, 2026

Catalyst overview

Event details

Drug or asset
Mipletamig (APVO436) +/- Venetoclax + Azacitidine
Development stage
Phase 1/2
Event type
Data readout
Indication
Acute myeloid leukemia (AML)

Research summary

What is being tracked?

This catalyst tracks a Phase 1/2 data readout for Mipletamig (APVO436) +/- Venetoclax + Azacitidine in Acute myeloid leukemia (AML). The expected timing is based on the latest available company guidance and may change.

Development notes

RAINIER trial. 8/13/24- Initiated Ph1b/2 dose optimization trial. 6/18/25- New data in frontline AML. 9/16/25- 100% remission rate in Cohort 3 reported. Cohort 4 enrolling. Presentation at major medical conference in Q4 2025. 11/06/25:- Across two trials, 89% remission in frontline AML; no CRS observed so far. 12/09/25:- RAINIER Ph1b/2 ASH 2025 poster showed 93% ORR, 87% CR/CRi, no CRS; enrollment ongoing. 03/26/26:- Updated interim RAINIER data: 86% benefit, 79% CR/CRi, 61% CR, 55% MRD-negative; no CRS; four transplants. 05/06/26:- New RAINIER Cohort 5 data: 81% CR/CRi. Complete Ph1b dose optimization and select RP2D in 2026. 05/13/26:- RAINIER on track for completion and Ph2 dose selection by year-end 2026. Updated Cohort 5: 81% CR/CRi, no CRS. Added RAINIER data: 87% clinical benefit, 81% CR/CRi, 65% CR, 52% MRD-negative, no CRS. 08/14/26:- Updated RAINIER data showed 87% clinical benefit and 81% remission. Final dose optimization will complete and RP2D will be selected by year-end 2026. Phase 2 regulatory interaction is expected in Q1 2027.

Verification

Primary source

Confirm timing and program details against the company announcement or filing.

Open source

Company

Aptevo Therapeutics

APVO · NasdaqCM
Industry
Biotechnology
Pipeline assets
2
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Updated Aug 23, 2026. Dates can change; this is not investment advice.

Disclaimer: Biotech Stock Intel is an independent research platform. Information is provided for informational purposes only and is not investment or medical advice. Always verify catalyst dates against primary sources and conduct your own research.
Biotech Stock Intel© 2026 Biotech Stock Intel
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