General Information of This Antibody-drug Conjugate (ADC)
ADC ID
DRG0WQFPM
ADC Name
wO2024222841A1 ADC38
Synonyms
ADC38
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Organization
CSPC MEGALITH BIOPHARMACEUTICAL CO.,LTD.
Drug Status
Investigative
Drug-to-Antibody Ratio
7.6
Structure
Antibody Name
Trastuzumab
 Antibody Info 
Antigen Name
Receptor tyrosine-protein kinase erbB-2 (ERBB2)
 Antigen Info 
Payload Name
(S)B19
 Payload Info 
Therapeutic Target
Eukaryotic peptide chain release factor GTP-binding subunit ERF3A (GSPT1)
 Target Info 
Linker Name
OXDc-VA-PAB (PEG)
 Linker Info 
Conjugate Type
Random conjugation through reduced inter-chain cysteines.
Combination Type
LD38
ADC-specific functional property(2027 Update)
Payload Release Efficiency
Click To Hide/Show 1 ADC-specific functional property Data
Incubation Time 7days Release 0.007% Reference
[1]
Description
The pharmacokinetic behaviors of the investigational compounds ADC38-4, ADC38, T-ADC-2, and Enhertu were studied in rats after a single intravenous injection of 6 mg/kg. The ADC compounds were administered via tail vein injection at a dose of 6 mg/kg. Blood samples were collected from the retro-orbital sinus before dosing and at 0.5 h, 18 h, 24 h, 48 h, 96 h, and 168 h post-dose. The blood was drawn into citrate tubes and processed to plasma. The content of the antibody-drug conjugates (ADC) in the blood samples was determined by enzyme-linked immunosorbent assay (ELISA), and pharmacokinetic parameters were calculated using a non-compartmental model. The content of free small molecules in the blood samples was determined using LC-MS/MS, and pharmacokinetic parameters were also calculated.

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General Information of The ADMET Data Related to This ADC(2027 Update)
Absorption
Click To Hide/Show 1 Absorption Data Related to This Level
Standard Type Value Units Description Reference
Area Under the Concentration-Time Curve (AUC) 55.21 h*nmol/mL
The pharmacokinetic behaviors of the investigational compounds ADC38-4, ADC38, T-ADC-2, and Enhertu were studied in rats after a single intravenous injection of 6 mg/kg. The ADC compounds were administered via tail vein injection at a dose of 6 mg/kg. Blood samples were collected from the retro-orbital sinus before dosing and at 0.5 h, 18 h, 24 h, 48 h, 96 h, and 168 h post-dose. The blood was drawn into citrate tubes and processed to plasma. The content of the antibody-drug conjugates (ADC) in the blood samples was determined by enzyme-linked immunosorbent assay (ELISA), and pharmacokinetic parameters were calculated using a non-compartmental model. The content of free small molecules in the blood samples was determined using LC-MS/MS, and pharmacokinetic parameters were also calculated.

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[1]
Distribution
Click To Hide/Show 1 Distribution Data Related to This Level
Standard Type Value Units Description Reference
Area Under the Concentration-Time Curve (AUC) 55.21 h*nmol/mL
The pharmacokinetic behaviors of the investigational compounds ADC38-4, ADC38, T-ADC-2, and Enhertu were studied in rats after a single intravenous injection of 6 mg/kg. The ADC compounds were administered via tail vein injection at a dose of 6 mg/kg. Blood samples were collected from the retro-orbital sinus before dosing and at 0.5 h, 18 h, 24 h, 48 h, 96 h, and 168 h post-dose. The blood was drawn into citrate tubes and processed to plasma. The content of the antibody-drug conjugates (ADC) in the blood samples was determined by enzyme-linked immunosorbent assay (ELISA), and pharmacokinetic parameters were calculated using a non-compartmental model. The content of free small molecules in the blood samples was determined using LC-MS/MS, and pharmacokinetic parameters were also calculated.

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[1]
Metabolism
Click To Hide/Show 1 Metabolism Data Related to This Level
Standard Type Value Units Description Reference
Area Under the Concentration-Time Curve (AUC) 55.21 h*nmol/mL
The pharmacokinetic behaviors of the investigational compounds ADC38-4, ADC38, T-ADC-2, and Enhertu were studied in rats after a single intravenous injection of 6 mg/kg. The ADC compounds were administered via tail vein injection at a dose of 6 mg/kg. Blood samples were collected from the retro-orbital sinus before dosing and at 0.5 h, 18 h, 24 h, 48 h, 96 h, and 168 h post-dose. The blood was drawn into citrate tubes and processed to plasma. The content of the antibody-drug conjugates (ADC) in the blood samples was determined by enzyme-linked immunosorbent assay (ELISA), and pharmacokinetic parameters were calculated using a non-compartmental model. The content of free small molecules in the blood samples was determined using LC-MS/MS, and pharmacokinetic parameters were also calculated.

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[1]
Excretion
Click To Hide/Show 1 Excretion Data Related to This Level
Standard Type Value Units Description Reference
Area Under the Concentration-Time Curve (AUC) 55.21 h*nmol/mL
The pharmacokinetic behaviors of the investigational compounds ADC38-4, ADC38, T-ADC-2, and Enhertu were studied in rats after a single intravenous injection of 6 mg/kg. The ADC compounds were administered via tail vein injection at a dose of 6 mg/kg. Blood samples were collected from the retro-orbital sinus before dosing and at 0.5 h, 18 h, 24 h, 48 h, 96 h, and 168 h post-dose. The blood was drawn into citrate tubes and processed to plasma. The content of the antibody-drug conjugates (ADC) in the blood samples was determined by enzyme-linked immunosorbent assay (ELISA), and pharmacokinetic parameters were calculated using a non-compartmental model. The content of free small molecules in the blood samples was determined using LC-MS/MS, and pharmacokinetic parameters were also calculated.

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[1]
General Information of The Activity Data Related to This ADC
Discovered Using Cell Line-derived Xenograft Model
Click To Hide/Show 2 Activity Data Related to This Level
Standard Type Value Units Cell Line Disease Model
Tumor Growth lnhibition value (TGl) 
88
%
Undisclosed Undisclosed
Tumor Growth lnhibition value (TGl) 
95
%
Undisclosed Undisclosed
Revealed Based on the Cell Line Data
Click To Hide/Show 4 Activity Data Related to This Level
Standard Type Value Units Cell Line Disease Model
Half Maximal inhibitory Concentration (lC50) 
0.8
pM
CVCL_0179
Invasive breast carcinoma
Half Maximal inhibitory Concentration (lC50) 
> 25
pM
CVCL_0033
Breast adenocarcinoma
Half Maximal inhibitory Concentration (lC50) 
0.01676
nM
CVCL_0553
Invasive breast carcinoma of no special type
Half Maximal inhibitory Concentration (lC50) 
0.4645
nM
CVCL_1603
Gastric tubular adenocarcinoma
Full List of Activity Data of This Antibody-drug Conjugate
Discovered Using Cell Line-derived Xenograft Model
Click To Hide/Show 2 Activity Data Related to This Level
Experiment 1 Reporting the Activity Date of This ADC [1]
Efficacy Data Tumor Growth lnhibition value (TGl) 88% High HER2 expression (HER2+++)
Method Description
Investigated the antitumour effect of 3mg/kg ADC in a HER2high HCC-1954 xenograft NUNU mice tumour model, D21.
In Vivo Model HER2-high HCC-1954 xenograft NUNU mice tumour model
Experiment 2 Reporting the Activity Date of This ADC [1]
Efficacy Data Tumor Growth lnhibition value (TGl) 95% Low HER2 expression (HER2+)
Method Description
Investigated the antitumour effect of 5mg/kg ADC in a HER2low JIMT-1 xenograft NUNU mice tumour model, D13.
In Vivo Model HER2-low JIMT-1 xenograft NUNU mice tumour model
Revealed Based on the Cell Line Data
Click To Hide/Show 4 Activity Data Related to This Level
Experiment 1 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal inhibitory Concentration (lC50) 0.8 pM High HER2 expression (HER2+++)
Method Description
Cytotoxicity of ADC to BT-474 cells
In Vitro Model Invasive breast carcinoma BT-474 cells CVCL_0179
Experiment 2 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal inhibitory Concentration (lC50) > 25 pM High HER2 expression (HER2+++)
Method Description
Cytotoxicity of ADC to SK-BR-3 cells
In Vitro Model Breast adenocarcinoma SK-BR-3 cells CVCL_0033
Experiment 3 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal inhibitory Concentration (lC50) 0.01676 nM Low HER2 expression (HER2+)
Method Description
Cytotoxicity of ADC to T-47D cells
In Vitro Model Invasive breast carcinoma of no special type T-47D cells CVCL_0553
Experiment 4 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal inhibitory Concentration (lC50) 0.4645 nM High HER2 expression (HER2+++)
Method Description
Cytotoxicity of ADC to NCI-N87 cells
In Vitro Model Gastric tubular adenocarcinoma NCI-N87 cells CVCL_1603
References
Ref 1 Antibody-drug conjugate