General Information of This Antibody-drug Conjugate (ADC)
ADC ID
DRG0FGLFW
ADC Name
ATG-022
Synonyms
ATG-022; ATG 022; ATN-022; ATG-022 ADC
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Organization
Antengene (Originator)
Drug Status
Phase 1/2
Drug-to-Antibody Ratio
4
Structure
Antibody Name
Anti-CLDN18.2 antibody
 Antibody Info 
Antigen Name
Claudin-18.2 (CLDN18.2)
 Antigen Info 
Payload Name
Monomethyl auristatin E
 Payload Info 
Payload Target
Microtubule (MT)
 Target Info 
Linker Name
Mc-Val-Cit-PABC
 Linker Info 
Conjugate Type
Random Cysteines
Combination Type
vedotin
2027 Update
The indication landscape of This ADC
2027 Update
The clinical trial pipelines of This ADC
Indication Phase 1 Phase 2 Phase 3 Approved
Unspecific solid tumor
1 Trials
Trial ID
NCT05718895; CTR20230901
General Information of The Activity Data Related to This ADC
Identified from the Human Clinical Data
Click To Hide/Show 3 Activity Data Related to This Level
Standard Type NCT Number Clinical Status Clinical Trial Description
Objective Response Rate (ORR)  NCT05718895
PHASE1
An Open, Multi-center, Phase I Clinical Study of ATG 022 in Patients With Advanced/Metastatic Solid Tumors
Disease control rate (DCR)  NCT05718895
PHASE1
An Open, Multi-center, Phase I Clinical Study of ATG 022 in Patients With Advanced/Metastatic Solid Tumors
Undisclosed  NCT05718895
Phase 1
An open, multi-center, phase 1 clinical study of ATG 022 in patients with advanced/metastatic solid tumors.
Full List of Activity Data of This Antibody-drug Conjugate
Identified from the Human Clinical Data
Click To Hide/Show 3 Activity Data Related to This Level
Experiment 1 Reporting the Activity Date of This ADC [1]
Efficacy Data Objective Response Rate (ORR)
41.70%
Patients Enrolled
Eligible participants were adults with advanced solid tumors (Claudin 18.2+ in expansion phase), measurable disease per RECIST 1.1, adequate organ function, and willingness for tumor biopsy. Exclusions included CNS involvement, prior Claudin 18.2 therapy, active infections, recent anticancer treatments, transplants, or other conditions compromising protocol adherence.

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Administration Dosage
A treatment cycle of ATG-022 will be defined as 21 days. Dosing will begin at 0.3 mg/kg once every 3 weeks (Q3W) with 1 subject ,the following dose cohorts (0.9, 1.8, 2.4, 3.0, and 3.6 mg/kg Q3W) will require at least 3 and up to 6 evaluable subjects by using dose escalation plan of "3+3" design.
Related Clinical Trial
NCT Number NCT05718895  Clinical Status PHASE1
Clinical Description An Open, Multi-center, Phase I Clinical Study of ATG 022 in Patients With Advanced/Metastatic Solid Tumors
Primary Endpoint
The study assessed dose-limiting toxicities (DLTs), maximum tolerated dose (MTD), and recommended Phase 2 dose (RP2D) during the initial 21-day period in dose escalation cohorts.
Other Endpoint
Efficacy outcomes included progression-free survival (PFS), overall response rate (ORR), and duration of response (DOR), all evaluated 12 months post-enrollment of the last subject across study cohorts.
Experiment 2 Reporting the Activity Date of This ADC [1]
Efficacy Data Disease control rate (DCR)
100%
Patients Enrolled
Eligible participants were adults with advanced solid tumors (Claudin 18.2+ in expansion phase), measurable disease per RECIST 1.1, adequate organ function, and willingness for tumor biopsy. Exclusions included CNS involvement, prior Claudin 18.2 therapy, active infections, recent anticancer treatments, transplants, or other conditions compromising protocol adherence.

   Click to Show/Hide
Administration Dosage
A treatment cycle of ATG-022 will be defined as 21 days. Dosing will begin at 0.3 mg/kg once every 3 weeks (Q3W) with 1 subject ,the following dose cohorts (0.9, 1.8, 2.4, 3.0, and 3.6 mg/kg Q3W) will require at least 3 and up to 6 evaluable subjects by using dose escalation plan of "3+3" design.
Related Clinical Trial
NCT Number NCT05718895  Clinical Status PHASE1
Clinical Description An Open, Multi-center, Phase I Clinical Study of ATG 022 in Patients With Advanced/Metastatic Solid Tumors
Primary Endpoint
The study assessed dose-limiting toxicities (DLTs), maximum tolerated dose (MTD), and recommended Phase 2 dose (RP2D) during the initial 21-day period in dose escalation cohorts.
Other Endpoint
Efficacy outcomes included progression-free survival (PFS), overall response rate (ORR), and duration of response (DOR), all evaluated 12 months post-enrollment of the last subject across study cohorts.
Experiment 3 Reporting the Activity Date of This ADC [2]
Related Clinical Trial
NCT Number NCT05718895  Clinical Status Phase 1
Clinical Description An open, multi-center, phase 1 clinical study of ATG 022 in patients with advanced/metastatic solid tumors.
References
Ref 1 A Study of ATG-022 in Patients With Advanced/Metastatic Solid Tumors
Ref 2 An Open, Multi-center, Phase I Clinical Study of ATG 022 in Patients With Advanced/Metastatic Solid Tumors, NCT05718895