Cadonilimab in the Treatment of Advanced Soft Tissue Sarcoma

Study Overview
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Brief Summary
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The purpose of this study was to evaluate the efficacy and safety of Cadonilimab monotherapy in the treatment of patients with advanced soft tissue sarcoma who have received at least one chemotherapy (including anthracyclines) for advanced diseases (excluding alveolar soft part sarcoma).

Detailed Description
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After being informed about the study and potential risks, all patients giving written informed consent will undergo a screening period (≤28 days) to determine eligibility for study entry. At week 0, patients who meet the eligibility requirements will be treated with Cadonilimab monotherapy.

Official Title
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A Single-arm, Single-center, Open-label, Phase II Study Assessing Cadonilimab in the Treatment of Advanced Soft Tissue Sarcoma

Conditions
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Soft Tissue Sarcoma

Intervention / Treatment
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* Device: Cadonilimab


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: 1. Written and signed informed consent. 2. Male or female, age≥ 18 and ≤ 70 years old on day of signing informed consent. 3. Pathologically confirmed unresectable or metastatic soft tissue sarcoma, mainly including Undifferentiated pleomorphic sarcoma/malignant fiber histiocytoma, Alveolar soft part sarcoma, dedifferentiated liposarcoma, fibrosarcoma, Leiomyosarcoma, Anigosarcoma, Synovial sarcoma. 4. Patients who have failed at least one chemotherapy (including anthracyclines) in the last 6 months (excluding acinar soft tissue sarcoma). Exclusion Criteria: 1. Prior use of investigational products or devices within 4 weeks prior to the first administration of the study treatment. 2. Concurrent enrollment into another clinical study, except the study belongs to investigational, non-interventional studies or the follow-up period of interventional studies. 3. Prior exposure to any experimental antitumor vaccines, or any agent targeting T-cell costimulation or immune checkpoint pathways (eg, anti-PD-1, anti-PD-L1, anti-CTLA-4, anti-CD137 or anti-OX40 antibody, etc). 4. Active autoimmune diseases; 5. History of transplantation; 6. Known history of primary immunodeficiency virus infection or known history of testing positive for human immunodeficiency virus (HIV).

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 70 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Cadonilimab<br>Cadonilimab monotherapy | Device: Cadonilimab<br>* AK104, 6mg/kg, Q2W<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Anti-tumor activity of Cadonilimab using objective response rate (ORR) based on RECIST v1.1 as assessed by the investigator | The ORR is defined as the proportion of subjects with confirmed CR or confirmed PR, based on RECIST Version 1.1. | up to 2 years | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Disease control rate (DCR) | The DCR is defined as the proportion of subjects with CR, PR, or SD (subjects achieving SD will be included in the DCR if they maintain SD for ≥8 weeks) based on RECIST Version 1.1. | up to 2 years | 
| Duration of response (DoR) | Duration of response is defined as the duration from the first documentation of objective response to the first documented disease progression or death due to any cause, whichever occurs first. | up to 2 years | 
| Time to recurrence (TTR) | TTR is defined as the time to response base on RECIST v1.1 | up to 2 years | 
| Progression-free survival (PFS) | PFS is defined as the time from the date of first dosing till the first documentation of disease progression (per RECIST v1.1 criteria) or death from any cause (whichever occurs first) | up to 2 years | 
| Overall survival (OS) | Overall survival is defined as the time from the start of treatment with Cadonilimab until death due to any cause. | up to 2 years | 
| AE | Incidence and severity of adverse events (AEs) and serious adverse events (SAEs), and clinically significant abnormal laboratory results. | From the subject signs the ICF to 30 days (AE) and 90 days (SAE) after the last dose of study treatment or initiation of other anti-tumor therapy, whichever occurs first |