General Information of This Antibody (ID: ANTI0ZPGYS)
Antibody Name
Anti-GPRC5D antibody
Antigen Name
GPRC5D
 Antigen Info 
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Each Antibody-drug Conjugate Related to This Antibody
Full Information of The Activity Data of The ADC(s) Related to This Antibody
Vemzatatug vedotin [Phase 1/2]
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 [1]
Patients Enrolled
Key inclusion criteria: signed ICF; age ≥18; ECOG 0-1; life expectancy ≥6 months; adequate hematologic/organ function (specific laboratory thresholds to be confirmed per protocol).
Administration Dosage
LM-305 Dose Escalation
Related Clinical Trial
NCT Number NCT05647512  Clinical Status PHASE1|||PHASE2
Clinical Description
A Phase I/II, Open-Label, Multiple Centre Clinical Study to Evaluate the Safety, Tolerability, Pharmacokinetics, Immunogenicity and Preliminary Efficacy of LM-305 in Patients With Relapsed or Refractory Multiple Myeloma (RRMM) and Other Plasma Cell Diseases
Primary Endpoint
Primary safety endpoints include dose-limiting toxicity (DLT) assessment during Cycle 1 (21-day cycle) and comprehensive AE/SAE monitoring from ICF signing until 28 days post-EOT or alternative anticancer therapy initiation to evaluate LM-305 safety profile.
Discovered Using Cell Line-derived Xenograft Model
Click To Hide/Show 1 Activity Data Related to This Level
Experiment 1 Reporting the Activity Date of This ADC [2]
Efficacy Data Tumor Growth Inhibition value (TGI) ≈ 100% High GPRC5D expression (GPRC5D+++)
Method Description
The inhibitory activity of LM-305 against cancer cell growth was evaluated in Multiple myeloma CDX model in vivo. The dose of LM-305 was 3 mg/kg.
In Vivo Model Multiple myeloma CDX model
In Vitro Model Multiple myeloma Multiple myeloma cells Homo sapiens
Revealed Based on the Cell Line Data
Click To Hide/Show 2 Activity Data Related to This Level
Experiment 1 Reporting the Activity Date of This ADC [2]
Efficacy Data Half Maximal Inhibitory Concentration (IC50)
0.10-0.30 nM
High GPRC5D expression (GPRC5D+++)
Method Description
LM-305 was evaluated in vitro for its cytotoxic activity against a panel of multiple myeloma cell lines. LM-305 was co-cultured with multiple myeloma cells.
In Vitro Model Plasma cell myeloma MM1.R cells CVCL_8794
Experiment 2 Reporting the Activity Date of This ADC [2]
Efficacy Data Half Maximal Inhibitory Concentration (IC50)
0.10-0.30 nM
High GPRC5D expression (GPRC5D+++)
Method Description
LM-305 was evaluated in vitro for its cytotoxic activity against a panel of multiple myeloma cell lines. LM-305 was co-cultured with multiple myeloma cells.
In Vitro Model Plasma cell myeloma NCI-H929 cells CVCL_1600
References
Ref 1 Study of LM-305 in Patients With Relapsed or Refractory Multiple Myeloma (RRMM) and Other Plasma Cell Diseases
Ref 2 Preclinical activity of LM-305 targeting G-protein-coupled receptor class 5 member D (GPRC5D) antibody drug conjugate for the treatment of multiple myeloma. Cancer Res (2022) 82 (12_Supplement): 6020.