General Information of This Antibody-drug Conjugate (ADC)
ADC ID
DRG0WIBDT
ADC Name
HDP-101
Synonyms
HDP 101; HDP101
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Organization
Heidelberg Pharma AG; Huadong Medicine Co., Ltd.; Hangzhou Zhongmeihuadong Pharmaceutical Co., Ltd.; Heidelberg Pharma Research GmbH
Drug Status
Phase 2
Indication
In total 4 Indication(s)
Multiple myeloma [ICD11:2A83]
Phase 2
Paraproteinemia [ICD11:2A83]
Phase 2
B-cell lymphoma [ICD11:2A86]
Phase 1
Diffuse large B-cell lymphoma [ICD11:2A81]
Phase 1
Drug-to-Antibody Ratio
2
Structure
Antibody Name
J22.9-ISY
 Antibody Info 
Antigen Name
Tumor necrosis factor receptor superfamily member 17 (TNFRSF17)
 Antigen Info 
Payload Name
HDP 30.2115
 Payload Info 
Therapeutic Target
DNA-directed RNA polymerase II subunit RPB2 (POLR2B); DNA-directed RNA polymerase III subunit RPC7 (POLR3G)
 Target Info 
Linker Name
Mal-Val-Ala-PAB
 Linker Info 
Conjugate Type
Site-specific conjugation through the engineered cysteine (THIOMAB).
General Information of The Activity Data Related to This ADC
Revealed Based on the Cell Line Data
Click To Hide/Show 11 Activity Data Related to This Level
Standard Type Value Units Cell Line Disease Model
Half Maximal Inhibitory Concentration (IC50) 
0.01
nM
U266B1 cells
Plasma cell myeloma
Half Maximal Inhibitory Concentration (IC50) 
0.04
nM
NCI-H929 cells
Plasma cell myeloma
Half Maximal Inhibitory Concentration (IC50) 
0.16
nM
MM1.S cells
Plasma cell myeloma
Half Maximal Inhibitory Concentration (IC50) 
0.18
nM
INA-6 cells
Plasma cell myeloma
Half Maximal Inhibitory Concentration (IC50) 
0.3
nM
LP-1 cells
Plasma cell myeloma
Half Maximal Inhibitory Concentration (IC50) 
0.34
nM
SK-MM-1 cells
Multiple myeloma
Half Maximal Inhibitory Concentration (IC50) 
4.83
nM
L-363 cells
Plasma cell myeloma
Half Maximal Inhibitory Concentration (IC50) 
34.2
nM
OPM-2 cells
Plasma cell myeloma
Half Maximal Inhibitory Concentration (IC50) 
142
nM
RPMI-8226 cells
Plasma cell myeloma
Half Maximal Inhibitory Concentration (IC50) 
> 1000
nM
HS-5 cells
Normal
Half Maximal Inhibitory Concentration (IC50) 
> 1000
nM
U2OS cells
Osteosarcoma
Full List of Activity Data of This Antibody-drug Conjugate
Revealed Based on the Cell Line Data
Click To Hide/Show 11 Activity Data Related to This Level
Experiment 1 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal Inhibitory Concentration (IC50)
0.01 nM
Method Description
The inhibitory activity of HDP-101 against cancer cell growth was evaluated in various human cancer cell lines in vitro. The cells were treated 2 or 4 days.
In Vitro Model Plasma cell myeloma U266B1 cells CVCL_0566
Experiment 2 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal Inhibitory Concentration (IC50)
0.04 nM
Method Description
The inhibitory activity of HDP-101 against cancer cell growth was evaluated in various human cancer cell lines in vitro. The cells were treated 2 or 4 days.
In Vitro Model Plasma cell myeloma NCI-H929 cells CVCL_1600
Experiment 3 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal Inhibitory Concentration (IC50)
0.16 nM
Method Description
The inhibitory activity of HDP-101 against cancer cell growth was evaluated in various human cancer cell lines in vitro. The cells were treated 2 or 4 days.
In Vitro Model Plasma cell myeloma MM1.S cells CVCL_8792
Experiment 4 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal Inhibitory Concentration (IC50)
0.18 nM
Method Description
The inhibitory activity of HDP-101 against cancer cell growth was evaluated in various human cancer cell lines in vitro. The cells were treated 2 or 4 days.
In Vitro Model Plasma cell myeloma INA-6 cells CVCL_5209
Experiment 5 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal Inhibitory Concentration (IC50)
0.30 nM
Method Description
The inhibitory activity of HDP-101 against cancer cell growth was evaluated in various human cancer cell lines in vitro. The cells were treated 2 or 4 days.
In Vitro Model Plasma cell myeloma LP-1 cells CVCL_0012
Experiment 6 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal Inhibitory Concentration (IC50)
0.34 nM
Method Description
The inhibitory activity of HDP-101 against cancer cell growth was evaluated in various human cancer cell lines in vitro. The cells were treated 2 or 4 days.
In Vitro Model Multiple myeloma SK-MM-1 cells CVCL_A478
Experiment 7 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal Inhibitory Concentration (IC50)
4.83 nM
Method Description
The inhibitory activity of HDP-101 against cancer cell growth was evaluated in various human cancer cell lines in vitro. The cells were treated 2 or 4 days.
In Vitro Model Plasma cell myeloma L-363 cells CVCL_1357
Experiment 8 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal Inhibitory Concentration (IC50)
34.20 nM
Method Description
The inhibitory activity of HDP-101 against cancer cell growth was evaluated in various human cancer cell lines in vitro. The cells were treated 2 or 4 days.
In Vitro Model Plasma cell myeloma OPM-2 cells CVCL_1625
Experiment 9 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal Inhibitory Concentration (IC50)
142.00 nM
Method Description
The inhibitory activity of HDP-101 against cancer cell growth was evaluated in various human cancer cell lines in vitro. The cells were treated 2 or 4 days.
In Vitro Model Plasma cell myeloma RPMI-8226 cells CVCL_0014
Experiment 10 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal Inhibitory Concentration (IC50) > 1000.00 nM
Method Description
The inhibitory activity of HDP-101 against cancer cell growth was evaluated in various human cancer cell lines in vitro. The cells were treated 2 or 4 days.
In Vitro Model Normal HS-5 cells CVCL_3720
Experiment 11 Reporting the Activity Date of This ADC [1]
Efficacy Data Half Maximal Inhibitory Concentration (IC50) > 1000.00 nM
Method Description
The inhibitory activity of HDP-101 against cancer cell growth was evaluated in various human cancer cell lines in vitro. The cells were treated 2 or 4 days.
In Vitro Model Osteosarcoma U2OS cells CVCL_0042
References
Ref 1 HDP-101, an Anti-BCMA Antibody-Drug Conjugate, Safely Delivers Amanitin to Induce Cell Death in Proliferating and Resting Multiple Myeloma Cells. Mol Cancer Ther. 2021 Feb;20(2):367-378.

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