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ADG126

Phase 1

Advanced/Metastatic Solid Tumors | Small molecule | Oncology |Adagene Inc.|Last Updated: Jan 7, 2026

Target and mechanism

Molecular targetCTLA-4
Target classProtein
ModalitySmall molecule

Success Probability

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Market & Valuation

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Trial Design

RandomizedCONTROLLEDDMC
Total Trials1
Total Enrollment186

FDA Designations

No designations recorded

Clinical trial landscape

ADG126 · 1 trial · 1 indication

Phase 1 1
NCT05405595ADG126 in Combination With Pembrolizumab in Patients With Advanced/Metastatic Solid TumorsAdvanced/Metastatic Solid Tumors
RECRUITING186 Analytics
PHASE1RECRUITING
ADG126 in Combination With Pembrolizumab in Patients With Advanced/Metastatic Solid Tumors
Advanced/Metastatic Solid TumorsUnlock trial analytics

Study Endpoints

Primary Endpoints

Maximum tolerated dose (MTD) and RP2D for ADG126 in combination with pembrolizumab.
9 months

To determine the maximum tolerated dose (MTD) and recommended phase 2 dose (RP2D) for ADG126+ pembrolizumab in dose escalation levels

the safety and tolerability of ADG126 at escalating dose level in combination with pembrolizumab in adults with advanced metastatic solid tumors
9 months

Incidence rate of AEs as assessed by CTCAE v5.0

Access the preliminary antitumor activity of ADG126-pembrolizumab combination regimens
9 months

Number of Participants with preliminary antitumor activity

Maximum tolerated dose (MTD) and/or RP2D for ADG126 with Trifluridine/Tipiracil-Bevacizumab
6 months

To assess the safety and tolerability of ADG126 + pembrolizumab in combination with the following SOC therapies (Trifluridine/tipiracil-bevacizumab) in MSS CRC To determine the MTD and/or RP2D for ADG126 + pembrolizumab in combination with the following SOC therapies in MSS CRC:

Access the preliminary antitumor activity of ADG126 with Pembrolizumab in combination standard of care
6 months

To assess the preliminary antitumor activity of ADG126 + pembrolizumab in combination with the following SOC therapies in MSS CRC (Trifluridine/tipiracil-bevacizumab) SOC (Fruquintinib)

Access and characterize the optimal dose based on safety and efficacy parameters
9 months

To characterize the optimal dose based on safety and efficacy parameters

Secondary Endpoints

Pharmacokinetic (PK) profile/parameters
From first dose (Cycle 1 Day 1,) until the last dose (up to 2 years)
Maximum (peak) plasma concentration (Cmax)
From first dose (Cycle 1 Day 1,) until the last dose (up to 2 years)
Time to maximum (peak) concentration (Tmax)
From first dose (Cycle 1 Day 1,) until the last dose (up to 2 years)
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Study Design & Arms

AllocationRANDOMIZED
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
ADG126 in combination with Pembrolizumab (Trade name KEYTRUDA®)EXPERIMENTALAn IV infusion of ADG126 over 60-90 minutes will be administered 30-60 minutes after administration of pembrolizumab (KEYTRUDA®) infusion. A treatment cycle will consist of 21 days. ADG126 and Pembrolizumab (KEYTRUDA®) combination treatment both will be dosed until progressive disease (PD), intolerable toxicities, withdrawals of consent, or up to 35 cycles.
ADG126 and pembrolizumab (KEYTRUDA®) in combination with Trifluridine/Tipiracil-BevacizumabEXPERIMENTALTo evaluate the preliminary antitumor efficacy of ADG126 and Pembrolizumab (KEYTRUDA®) in combination with SOC (Trifluridine/Tipiracil-Bevacizumab) while assessing safety and tolerability. Standard of care treatment will be administered according to the specifications outlined in the Investigational Brochure. Will be dosed until progressive disease (PD), intolerable toxicities, withdrawals of consent, or up to 35 cycles.
ADG126 and pembrolizumab (KEYTRUDA®) in combination with fruquintinibEXPERIMENTALTo evaluate the preliminary antitumor efficacy of ADG126 and Pembrolizumab (KEYTRUDA®) in combination with SOC (Fruquintinib) while assessing safety and tolerability. The dose strength for treatment will be based on the IB and protocol. Fruquintinib (Fruzaqla) is orally given once daily for the first 21 days of each 28-day cycle. Each treatment cycle consists of 14 days. Will be dosed until progressive disease (PD), intolerable toxicities, withdrawals of consent, or up to 35 cycles.
Dose OptimizationEXPERIMENTALThe randomized phase 2 Dose Optimization arm is intended to test two dosing regimens of ADG126 in combination with pembrolizumab (KEYTRUDA®), which allows the selection of an optimal regimen. The study treatments may continue for up to 35 treatments for pembrolizumab (KEYTRUDA®) if given every 21 days and 18 treatments for pembrolizumab (KEYTRUDA®) if given every 42 days until PD, intolerable toxicities or withdrawal of consent.

Interventions

NameTypeDescription
ADG126DRUGADG126 is an anti-CTLA-4 fully human monoclonal antibody that specifically binds to human CTLA-4.
Pembrolizumab (KEYTRUDA®)DRUGPembrolizumab (KEYTRUDA®) is a PD-1 receptor-blocking antibody (a humanized IgG4 monoclonal antibody).
Standard of Care (Trifluridine/Tipiracil-Bevacizumab)DRUGThe standard of care therapies will include Trifluridine/Tipiracil-Bevacizumab, approved for treating metastatic colorectal cancer (CRC)and various solid tumors.
Standard of care (Fruquintinib)DRUGThe standard of care therapy, Fruquintinib, is approved for treating metastatic colorectal cancer (CRC) and various solid tumors.
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Eligibility Criteria

Age Range18 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites21

Inclusion Criteria: 1. ≥18 years of age at the time of informed consent. 2. Eastern Cooperative Oncology Group (ECOG) performance status 0 or 1. 3. Wash out period from previous antitumor therapies 4. At least 1 measurable lesion at baseline according to the definition of RECIST v1.1. 5. Adequate o...

Countries:United StatesChinaSouth Korea
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Competitive Landscape -Other Solid Tumors 9 trials (matched to "Advanced/Metastatic Solid Tumors")

Frequently asked questions about ADG126

What is ADG126 used for?

ADG126 is an investigational small molecule being studied for the treatment of advanced or metastatic solid tumors. It is currently in Phase 1 clinical development, meaning it has not been approved by regulatory authorities and is still being evaluated for safety and efficacy in patients.

What does ADG126 target?

ADG126 targets CTLA-4, a protein involved in regulating immune responses. By targeting CTLA-4, ADG126 is designed to modulate the immune system's ability to fight cancer cells. This mechanism is being explored in the context of advanced or metastatic solid tumors.

Who is developing ADG126?

ADG126 is being developed by Adagene Inc., a biopharmaceutical company listed on the stock exchange under the ticker symbol ADAG. The company is conducting clinical trials to evaluate the drug's safety and efficacy in patients with advanced or metastatic solid tumors.

What phase is ADG126 in?

ADG126 is currently in Phase 1 clinical development. It is an investigational drug, meaning it has not been approved by regulatory authorities. The Phase 1 trial is actively recruiting participants to assess the drug's safety, tolerability, and preliminary efficacy in combination with another therapy.

What clinical trials is ADG126 in?

ADG126 is being studied in a Phase 1 clinical trial with the identifier NCT05405595. This trial is evaluating ADG126 in combination with pembrolizumab in patients with advanced or metastatic solid tumors. The study is recruiting participants in the United States, China, and South Korea, with an enrollment target of 186 patients.

Is ADG126 the same as any other drug?

ADG126 is a distinct investigational drug developed by Adagene Inc. It is not known to be the same as any other approved or investigational medication. Its unique mechanism of targeting CTLA-4 differentiates it from other therapies, and it is being studied specifically for advanced or metastatic solid tumors.