General Information of This Antibody-drug Conjugate (ADC)
ADC ID
DRG0FOOJX
ADC Name
ABL202
Synonyms
ABL202; LCB71; CS5001
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Organization
LCB (Originator);CStone Pharmaceuticals;ABL Bio
Drug Status
Phase 1
Drug-to-Antibody Ratio
2
Structure
Antibody Name
Anti-ROR1 IgG1 mAb
 Antibody Info 
Antigen Name
Inactive tyrosine-protein kinase transmembrane receptor ROR1 (ROR1)
 Antigen Info 
Payload Name
PBD dimer
 Payload Info 
Therapeutic Target
Human deoxyribonucleic acid (hDNA)
 Target Info 
Linker Name
β-glucuronide trigger linker
 Linker Info 
Conjugate Type
Enzymatic Catalysis
The indication landscape of This ADC(2027 Update)
The clinical trial pipeline of This ADC(2027 Update)
Indication Phase 1 Phase 1/2 Phase 2 Phase 2/3 Phase 3 New Drug Application Approved
Unspecific hematological malignancies
1 Trials
Trial ID
NCT05279300; CTR20222983
Unspecific solid tumor
1 Trials
Trial ID
NCT05279300; CTR20222983
ADC-specific functional property(2027 Update)
Binding Affinity
Click To Hide/Show 1 ADC-specific functional property Data
Dissocation Constant (Kd) Binding Target Description Reference
1.38 nM
ROR1
CS5001 bound to human ROR1, but not ROR2, with a KD value of 1.38 nM.
[1]
General Information of The Activity Data Related to This ADC
Identified from the Human Clinical Data
Click To Hide/Show 1 Activity Data Related to This Level
Standard Type NCT Number Clinical Status Clinical Trial Description
Undisclosed  NCT05279300
PHASE1
A Phase I, Dose-Escalation and Dose-Expansion Study to Evaluate the Safety, Tolerability, Pharmacokinetics and Antitumor Activities of CS5001, an Anti-ROR1 Antibody Drug Conjugate, in Patients With Advanced Solid Tumors and Lymphomas

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Full List of Activity Data of This Antibody-drug Conjugate
Identified from the Human Clinical Data
Click To Hide/Show 1 Activity Data Related to This Level
Experiment 1 Reporting the Activity Date of This ADC [2]
Patients Enrolled
Inclusion criteria for dose escalation: solid tumor patients (≥1 prior systemic therapy) or lymphoma patients (≥2 prior therapies per 2016 WHO criteria) with ≥1 evaluable lesion (RECIST v1.1/Lugano 2014). Dose expansion includes MCL, DLBCL (both post-≥2 therapies including BTK inhibitors), and TNBC (post-≥2 therapies), all requiring measurable lesions. Additional requirements: life expectancy >3 months, ECOG 0/1, adequate organ function, tumor tissue/blood sample provision, negative pregnancy test (females), and contraception use by all participants.

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Administration Dosage
CS5001 will be administered every 3 weeks (21 days) by intravenous (IV) infusion, and 3 weeks (21 days) is considered as one treatment cycle.
Related Clinical Trial
NCT Number NCT05279300  Clinical Status PHASE1
Clinical Description A Phase I, Dose-Escalation and Dose-Expansion Study to Evaluate the Safety, Tolerability, Pharmacokinetics and Antitumor Activities of CS5001, an Anti-ROR1 Antibody Drug Conjugate, in Patients With Advanced Solid Tumors and Lymphomas
Primary Endpoint
The study will determine the Maximum Tolerated Dose (MTD) of CS5001 during dose escalation (over ~6 months) based on dose-limiting toxicities (DLTs) observed in participants receiving triweekly injections. The Recommended Phase 2 Dose (RP2D) will be derived from MTD data or a lower tolerable dose, incorporating safety, pharmacokinetic, pharmacodynamic, and efficacy profiles. Adverse events will be monitored for severity and incidence until 90 days post-treatment or new anticancer therapy initiation.

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Other Endpoint
Pharmacokinetic analysis will measure concentrations of CS5001 total antibody, prodrug, free cytotoxin, and anti-CS5001 antibodies, with sampling up to 30 days after the last dose or until new anticancer therapy begins.
References
Ref 1 Abstract LBA008: CS5001, a novel ROR1-targeting antibody drug conjugate (ADC) armed with tumor-cleavable β-glucuronide linkers and pyrrolobenzodiazepine (PBD) prodrugs for hematological and solid malignancies
Ref 2 A Study of CS5001 in Patients With Advanced Solid Tumors and Lymphomas