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Phase 1b: APG-115+pembrolizumab

Phase 1

Unresectable or Metastatic Melanoma or Advanced Solid Tumors | Small molecule | Oncology |Ascentage Pharma Group International - American Depository Shares|Last Updated: Aug 7, 2025

Success Probability

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Market & Valuation

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Trial Design

UNCONTROLLED
Total Trials1
Total Enrollment230

FDA Designations

No designations recorded

Clinical trial landscape

Phase 1b: APG-115+pembrolizumab · 1 trial · 8 indications

Phase 1 1
NCT03611868A Study of APG-115 in as a Monotherapy or Combination With Pembrolizumab in Patients With Metastatic Melanomas or Advanced Solid TumorsUnresectable or Metastatic Melanoma or Advanced Solid Tumors
ACTIVE NOT_RECRUITING230 Analytics
PHASE1ACTIVE NOT_RECRUITING
A Study of APG-115 in as a Monotherapy or Combination With Pembrolizumab in Patients With Metastatic Melanomas or Advanced Solid Tumors
Unresectable or Metastatic Melanoma or Advanced Solid TumorsUnlock trial analytics

Study Endpoints

Primary Endpoints

Maximum Tolerated Dose
21 days

Part I is to assess the safety and tolerability of APG-115 by assessing the dose-limiting toxicity (DLT) of APG-115 in combination with pembrolizumab. End points included: Incidence of DLTs during the first 3 weeks of treatment of each dose cohort; Severity and frequency of any adverse event(s) (AE) and serious adverse event(s) (SAE) based on NCI CTCAE 5.0

Recommended Phase II Dose
21 days

Part I is aimed to generate data to select the recommended Phase II dose

Overall Response Rate
up to 12 months

Phase II is to assess overall response rate of APG-115 as monotherapy and in combination with pembrolizumab defined as the percentage of subjects with a best overall confirmed complete response (CR) or a partial response (PR) at any time as per RECIST 1.1

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Study Design & Arms

AllocationNA
MaskingNONE
ModelSEQUENTIAL
PurposeTREATMENT

Treatment Arms

ArmTypeDescription
APG-115+pembrolizumab open label, two-part phase Ib/IIEXPERIMENTALsingle arm dose escalation and dose expansion

Interventions

NameTypeDescription
Phase 1b: APG-115+pembrolizumabDRUGdose escalation of APG-115 in combination with label dose of pembrolizumab, Four dose levels of APG-115 will be tested: 50, 100, 150, and 200 mg. APG-115 will be administrateddose escalation of APG-115 in combination with label dose of pembrolizumab, Fourfour dose levels of APG-115 will be tested: 50, 100, 150, and 200 mg. APG-115 will be administrated orally every other day (QOD) for consecutive 2 weeks (ie. dosed at Day 1, 3, 5, 7, 9, 11, and 13), with one week dosing off as there are cycles every 3-weeks a cycle. Pembrolizumab is administrated following FDA approved label dose, i.e., 200 mg intravenous infusion at Day 1 of every 3 weeks as a cycle. Phase II: Combination of APG-115 at 150 mg (RP2D) and pembrolizumab or APG-115 monotherapy alone.
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Eligibility Criteria

Age Range12 Years to N/A
SexALL
Healthy VolunteersNo
Study Sites21

Inclusion Criteria: * Male or non-pregnant, non-lactating female patients age ≥18 years, an exception for MPNST cohort: adolescents ≥12 years old (who weigh at least 40 kg) is allowed * Part 2: 1. Measurable disease according to RECIST 1.1. Lesions situated in a previously irradiated area, or an...

Countries:United StatesAustralia
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Recent Changes (Last 90 Days)

MEDIUMAug 1, 2026NCT03611868Phase: PHASE2 → PHASE1
MEDIUMAug 1, 2026NCT03611868Phase: PHASE2 → PHASE1
MEDIUMAug 1, 2026NCT03611868Phase: PHASE2 → PHASE1

Frequently asked questions about Phase 1b: APG-115+pembrolizumab

What is APG-115 used for in unresectable or metastatic melanoma or advanced solid tumors?

APG-115 is an investigational small molecule being studied for the treatment of unresectable or metastatic melanoma or advanced solid tumors. It is being evaluated as a monotherapy or in combination with pembrolizumab in patients with these conditions, including uveal melanoma, cutaneous melanoma, mucosal melanoma, and malignant peripheral nerve sheath tumors.

Who makes APG-115?

APG-115 is being developed by Ascentage Pharma Group International, which trades under the ticker AAPG. The company is conducting a Phase 1 clinical trial of APG-115, both as a monotherapy and in combination with pembrolizumab, in patients with metastatic melanomas or advanced solid tumors.

What phase is APG-115 in?

APG-115 is in Phase 1 clinical development. It is an investigational drug and has not been approved by regulatory authorities. The ongoing Phase 1 trial is active but not recruiting participants, and it is studying the drug as a monotherapy or in combination with pembrolizumab.

What clinical trials is APG-115 in?

APG-115 is being studied in a Phase 1 clinical trial with the identifier NCT03611868. The trial is titled "A Study of APG-115 in as a Monotherapy or Combination With Pembrolizumab in Patients With Metastatic Melanomas or Advanced Solid Tumors." It is active but not recruiting, with an enrollment of 230 participants.

Is APG-115 the same as pembrolizumab?

No, APG-115 is not the same as pembrolizumab. APG-115 is an investigational small molecule being developed by Ascentage Pharma, while pembrolizumab is a separate drug. The two are being studied in combination in a Phase 1 clinical trial for metastatic melanomas or advanced solid tumors.