General Information of This Antibody-drug Conjugate (ADC)
ADC ID
DRG0DXLHQ
ADC Name
ZA202500202A D04-Y180/F404/K42/E161-LP3 8
Synonyms
D04-Y180/F404/K42/E161-LP3
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Organization
SUTRO BIOPHARMA, INC.
Drug Status
Investigative
Drug-to-Antibody Ratio
8
Structure
Antibody Name
D04-Y180/F404/K42/E161
 Antibody Info 
Antigen Name
Inactive tyrosine-protein kinase transmembrane receptor ROR1 (ROR1)
 Antigen Info 
Payload Name
Exatecan
 Payload Info 
Therapeutic Target
DNA topoisomerase 1 (TOP1)
 Target Info 
Linker Name
DBCO-beta-Glucuronide-PEG12
 Linker Info 
Combination Type
DBCO-beta-Glucuronide-PEG12-Exatecan
General Information of The Activity Data Related to This ADC
Revealed Based on the Cell Line Data
Click To Hide/Show 2 Activity Data Related to This Level
Standard Type Value Units Cell Line Disease Model
Half Maximal Effective Concentration (EC50) 
0.027
nM
CVCL_0034
Embryonal carcinoma
Half Maximal Effective Concentration (EC50) 
> 10
nM
CVCL_0031
Invasive breast carcinoma
Full List of Activity Data of This Antibody-drug Conjugate
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 [1]
Efficacy Data Half Maximal Effective Concentration (EC50) 0.027 nM Positive ROR1 expression (ROR1+++/++)
Method Description
Ntera-2 cell at 625 cells/25 pL were seeded in a 384-well plat. ADCs were formulated at 2x starting concentration. Filter sterilized samples were serial diluted (1:3) under sterile conditions and added onto cells in triplicates. For cell viability measurement, 30 microliter of Cell Titer-Glo@ reagent (Promega Corp, Madison, WI) was added into each well, and plates processed as per product instructions.

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In Vitro Model Embryonal carcinoma Ntera-2 cells CVCL_0034
Experiment 2 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal Effective Concentration (EC50) > 10 nM Negative ROR1 expression (ROR1-)
Method Description
MCF-7 cells at 625 cells/25 pL were seeded in a 384-well plat. ADCs were formulated at 2x starting concentration. Filter sterilized samples were serial diluted (1:3) under sterile conditions and added onto cells in triplicates. For cell viability measurement, 30 microliter of Cell Titer-Glo@ reagent (Promega Corp, Madison, WI) was added into each well, and plates processed as per product instructions.

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In Vitro Model Invasive breast carcinoma MCF-7 cells CVCL_0031
References
Ref 1 Anti-ROR1 antibodies and antibody conjugates, compositions comprising Anti-ROR1 antibodies or antibody conjugates, and methods of making and using Anti-ROR1 antibodies and antibody conjugates