General Information of This Antibody-drug Conjugate (ADC)
ADC ID
DRG0IAWOZ
ADC Name
JP2025011033A Ab2
Synonyms
Ab2
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Organization
ELI LILLY AND COMPANY
Drug Status
Investigative
Antibody Name
Ab2
 Antibody Info 
Antigen Name
Nectin-4 (NECTIN4)
 Antigen Info 
Payload Name
Undisclosed
Therapeutic Target
Stimulator of interferon genes protein (STING1)
 Target Info 
Linker Name
Undisclosed
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
Mean tumor colume&#177SEM 
72.57&#17714.06
mm3
Undisclosed Undisclosed
Mean tumor colume&#177SEM 
124.95&#17710.32
mm3
Undisclosed Undisclosed
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 inhibitory Concentration (lC50) 
0.0473
nM
CVCL_1494
Minimally invasive lung adenocarcinoma
Half Maximal inhibitory Concentration (lC50) 
0.07
nM
CVCL_0554
Bladder carcinoma
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 Mean tumor colume&#177SEM 72.57&#17714.06 mm3 High nectin-4 expression (nectin-4 +++)
Method Description
Immune compromised female mice between 5-8 weeks of age with weight 18-20 grams were implanted unilaterally on the right flank with UM-UC-3 Nectin4 clone F7 cells with high nectin-4 expression, when tumors reached appproximately 150-250 mm^3, animals were matched by tumor volume into treatment or controls groups and dosing initiated (Day 0, n=8 per group). The test articles were given at a single dose (2 mg/kg) formulated with 5% dextrose. Tumors were measured biweekly until Day 40.

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In Vivo Model UMUC3 Nectin-4 clone F7 xenograft model
Experiment 2 Reporting the Activity Date of This ADC [1]
Efficacy Data Mean tumor colume&#177SEM 124.95&#17710.32 mm3 Moderate nectin-4 expression (nectin-4++)
Method Description
Female NSG mice between 5-6 weeks of age were injected subcutaneously withMDA-MB-468 cells with moderate nectin-4 expression, when tumors reached appproximately 150-250 mm^3, animals were matched by tumor volume into treatment or controls groups and dosing initiated (Day 0, n=8 per group). The test articles were given at a single dose (2 mg/kg) formulated with 5% dextrose. Tumors were measured biweekly until Day 71.

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In Vivo Model MDAMB468 xenograft model
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 inhibitory Concentration (lC50) 0.0473 nM Positive nectin-4 expression (nectin-4+++/++)
Method Description
ADCs were tested in NCI H1781 cells, and were added at final working concentration from 200 nM, 1:4 serially diluted in culture medium for 5 days.
In Vitro Model Minimally invasive lung adenocarcinoma NCI-H1781 cells CVCL_1494
Experiment 2 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal inhibitory Concentration (lC50) 0.07 nM Positive nectin-4 expression (nectin-4+++/++)
Method Description
ADCs were tested in T24-human nectin-4 clone 108 cells, and were added at final working concentration from 200 nM, 1:4 serially diluted in culture medium for 5 days.
In Vitro Model Bladder carcinoma T24-human nectin-4 clone cells CVCL_0554
References
Ref 1 Nectin-4 antibodies and antibody-drug conjugates