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Acasunlimab

Phase 3

PD-L1-positive, Locally Advanced (Unresectable Stage IIIB/C) or Metastatic NSCLC | Monoclonal antibody | Oncology |Genmab A/S|Trials Updated: Jun 2, 2026

Acasunlimab development status

Highest phase Phase 3
Registered trials 6 across 1 sponsor since May 2025

Acasunlimab target and mechanism

Target class-Mab (Antibody)
ModalityMonoclonal antibody

Also known as GEN1046, DuoBody®-PD-L1×4-1BB, DuoBody®-PD-L1x4-1BB

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLEDBiomarker
Total Trials5
Total Enrollment764

FDA Designations

No designations recorded

Acasunlimab clinical trials

Acasunlimab · 5 trials · 7 indications

Phase 3 1Phase 2 2Phase 1/2 1Phase 1 1
NCT06635824Trial to Evaluate Acasunlimab and Pembrolizumab Combination Superiority Over Standard of Care Docetaxel in Non-Small Cell Lung Cancer (ABBIL1TY NSCLC-06)PD-L1-positive, Locally Advanced (Unresectable Stage IIIB/C) or Metastatic NSCLC
ACTIVE NOT_RECRUITING191 Analytics
PHASE3ACTIVE NOT_RECRUITING
Trial to Evaluate Acasunlimab and Pembrolizumab Combination Superiority Over Standard of Care Docetaxel in Non-Small Cell Lung Cancer (ABBIL1TY NSCLC-06)
PD-L1-positive, Locally Advanced (Unresectable Stage IIIB/C) or Metastatic NSCLCUnlock trial analytics

Study Endpoints

Primary Endpoints

Objective Response Rate (ORR)
Up to approximately 12 months

Assessed by the investigator per Response Evaluation Criteria in Solid Tumors (RECIST) v1.1.

Secondary Endpoints

Time to Response (TTR)
Up to approximately 15 months
Duration of Response (DOR)
Up to approximately 15 months
Progression-free Survival (PFS)
Up to approximately 15 months
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Study Design & Arms

Treatment Arms

ArmTypeDescription
Acasunlimab in Combination with PembrolizumabEXPERIMENTALParticipants with relapsed/refractory, unresectable locally advanced or metastatic cutaneous melanoma that progressed on/after prior CPI(s) will receive acasunlimab once every 6 weeks (Q6W) in combination with pembrolizumab Q6W.
AcasunlimabEXPERIMENTALParticipants with relapsed/refractory, unresectable locally advanced or metastatic cutaneous melanoma that progressed on/after prior CPI(s) will receive acasunlimab Q6W.

Interventions

NameTypeDescription
AcasunlimabDRUGIV infusion
PembrolizumabDRUGIV infusion
DocetaxelDRUGIV infusion
Acasunlimab in combination with docetaxel (in a single expansion cohort)BIOLOGICALAcasunlimab and docetaxel will be administered intravenously once every 21 days.
Acasunlimab in combination with pembrolizumab (in a separate expansion cohort)BIOLOGICALAcasunlimab and pembrolizumab will be administered intravenously once every 21 days or every 42 days, respectively.
Acasunlimab in combination with pembrolizumab and standard chemotherapy (in separate expansion cohorts)BIOLOGICALAcasunlimab and pembrolizumab and standard chemotherapy will be administered intravenously once every 21 days for 4 cycles, followed by treatment with acasunlimab and pembrolizumab once every 21 days.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL

Key Inclusion Criteria: * Participants ≥ 18 years of age with histologically or cytologically confirmed diagnosis of relapsed/refractory, locally advanced unresectable (Stage IIIB, IIIC, or IIID) or metastatic (Stage IV) cutaneous melanoma, per American Joint Committee on Cancer (8th edition) stagi...

Countries:United StatesPuerto Rico
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Frequently asked questions about Acasunlimab

What is acasunlimab used for?

Acasunlimab is an investigational monoclonal antibody being studied in oncology for cutaneous melanoma that has relapsed or is refractory after checkpoint inhibitor therapy, and for PD-L1-positive locally advanced or metastatic non-small cell lung cancer. It is also being evaluated in advanced solid tumors. It is not approved for any indication.

Who is developing acasunlimab?

Acasunlimab is being developed by Genmab A/S, which trades on Nasdaq under the ticker GMAB. Genmab is the sponsor of the clinical program, which includes trials in melanoma, non-small cell lung cancer, and advanced solid tumors.

What phase is acasunlimab in?

Acasunlimab is in Phase 2 development overall, with a Phase 3 trial also under way in non-small cell lung cancer. The program includes a completed Phase 1 study, a Phase 2 study in metastatic NSCLC, a Phase 2 melanoma study, and a Phase 3 NSCLC trial.

What clinical trials is acasunlimab in?

Acasunlimab is being studied in NCT06984328, a Phase 2 trial in advanced cutaneous melanoma after checkpoint inhibitor therapy, and NCT06635824, a Phase 3 trial in PD-L1-positive locally advanced or metastatic NSCLC. Earlier trials include NCT05117242 in metastatic NSCLC and the completed Phase 1 study NCT04937153 in advanced solid tumors.

Is acasunlimab the same as GEN1046?

Yes, acasunlimab is also known as GEN1046. The earlier clinical trials, including NCT05117242 and NCT04937153, refer to the drug as GEN1046, while the newer melanoma and NSCLC trials use the name acasunlimab. Both names refer to the same investigational monoclonal antibody developed by Genmab.

Is acasunlimab FDA approved?

No, acasunlimab is not FDA approved. It is an investigational monoclonal antibody still in clinical development, with Phase 1, Phase 2, and Phase 3 trials ongoing or completed. It has not received marketing authorization for any indication.