General Information of This Antibody-drug Conjugate (ADC)
ADC ID
DRG0QGQWG
ADC Name
Lmab-CL2A-SN38
Synonyms
Lmab CL2E SN38
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Drug Status
Investigative
Indication
In total 1 Indication(s)
Solid tumors [ICD11:2A00-2A0Z|2B50-2F9Z]
Investigative
Drug-to-Antibody Ratio
6
Antibody Name
Labetuzumab
 Antibody Info 
Antigen Name
Carcinoembryonic antigen-related cell adhesion molecule 5 (CEACAM5)
 Antigen Info 
Payload Name
Active metabolite of irinotecan SN38
 Payload Info 
Therapeutic Target
DNA topoisomerase 1 (TOP1)
 Target Info 
Linker Name
CL2E
 Linker Info 
Conjugate Type
Inter-chain cysteine.
Combination Type
CL2E-SN38
General Information of The Activity Data Related to This ADC
Revealed Based on the Cell Line Data
Click To Hide/Show 3 Activity Data Related to This Level
Standard Type Value Units Cell Line Disease Model
Half Maximal Effective Concentration (EC50) 
1.7
nM
Reh cells
B acute lymphoblastic leukemia
Half Maximal Effective Concentration (EC50) 
2.8
nM
Raji cells
EBV-related Burkitt lymphoma
Half Maximal Effective Concentration (EC50) 
5.1
nM
Ramos cells
Burkitt lymphoma
Full List of Activity Data of This Antibody-drug Conjugate
Revealed Based on the Cell Line Data
Click To Hide/Show 3 Activity Data Related to This Level
Experiment 1 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal Effective Concentration (EC50)
1.70 nM
Method Description
In vitro cytotoxicity by MTS assay of SN-38 and specific ADC conjugates against several hematopoietic tumor cell lines. The effect of linkage stability on the cytotoxicity of antibody conjugates as determined by a 4-day MTS assay.
In Vitro Model B acute lymphoblastic leukemia Reh cells CVCL_1650
Experiment 2 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal Effective Concentration (EC50)
2.80 nM
Method Description
In vitro cytotoxicity by MTS assay of SN-38 and specific ADC conjugates against several hematopoietic tumor cell lines. The effect of linkage stability on the cytotoxicity of antibody conjugates as determined by a 4-day MTS assay.
In Vitro Model EBV-related Burkitt lymphoma Raji cells CVCL_0511
Experiment 3 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal Effective Concentration (EC50)
5.10 nM
Method Description
In vitro cytotoxicity by MTS assay of SN-38 and specific ADC conjugates against several hematopoietic tumor cell lines. The effect of linkage stability on the cytotoxicity of antibody conjugates as determined by a 4-day MTS assay.
In Vitro Model Burkitt lymphoma Ramos cells CVCL_0597
References
Ref 1 Epratuzumab-SN-38: a new antibody-drug conjugate for the therapy of hematologic malignancies. Mol Cancer Ther. 2012 Jan;11(1):224-34.

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