General Information of This Antibody-drug Conjugate (ADC)
ADC ID
DRG0HEJWD
ADC Name
ABBV-011
Synonyms
ABBV-011; SC-011
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Organization
Stemcentrx (Top20 MNC) (Originator)
Drug Status
Phase 1 (discontinued)
Drug-to-Antibody Ratio
2
Structure
Antibody Name
SC17
 Antibody Info 
Antigen Name
Seizure protein 6 homolog (SEZ6)
 Antigen Info 
Payload Name
N-acetyl-gamma-calicheamicin
 Payload Info 
Therapeutic Target
Human deoxyribonucleic acid (hDNA)
 Target Info 
Linker Name
Mc-PEG8-acid-labile linker
 Linker Info 
Conjugate Type
Reactive Cysteines
Special Approval(s)
Orphan drug (EMA)
The indication landscape of This ADC(2027 Update)
The clinical trial pipeline of This ADC(2027 Update)
Indication Phase 1 Phase 1/2 Phase 2 Phase 2/3 Phase 3 New Drug Application Approved
Lung cancer
1 Trials
Trial ID
TWCT00004143; NCT03639194; jRCT2051200161
General Information of The Activity Data Related to This ADC
Identified from the Human Clinical Data
Click To Hide/Show 3 Activity Data Related to This Level
Standard Type NCT Number Clinical Status Clinical Trial Description
Objective Response Rate (ORR)  NCT03639194
PHASE1
A Phase I Study of ABBV-011 as a Single-Agent and in Combination With Budigalimab (ABBV-181) in Subjects With Relapsed or Refractory Small Cell Lung Cancer
Clinical benefit rate (CBR)  NCT03639194
PHASE1
A Phase I Study of ABBV-011 as a Single-Agent and in Combination With Budigalimab (ABBV-181) in Subjects With Relapsed or Refractory Small Cell Lung Cancer
Undisclosed  NCT03639194
Phase 1
A phase 1 study of ABBV-011 as a single-agent and in combination with budigalimab (ABBV-181) in subjects with relapsed or refractory small cell lung cancer.
Discovered Using Patient-derived Xenograft Model
Click To Hide/Show 22 Activity Data Related to This Level
Standard Type Value Units Animal Model (No. of PDX)
Tumor Growth Inhibition value (TGI) 
≈ 15.3
%
SCLC PDX model (PDX: LU64)
Tumor Growth Inhibition value (TGI) 
≈ 35.6
%
Small cell lung cancer PDX model (PDX: LU149)
Tumor Growth Inhibition value (TGI) 
≈ 42.85
%
Small cell lung cancer PDX model (PDX: LU505)
Tumor Growth Inhibition value (TGI) 
≈ 45.9
%
SCLC PDX model (PDX: LU505)
Tumor Growth Inhibition value (TGI) 
≈ 71.7
%
SCLC PDX model (PDX: LU149)
Tumor Growth Inhibition value (TGI) 
≈ 87
%
SCLC PDX model (PDX: LU505)
Tumor Growth Inhibition value (TGI) 
≈ 89.8
%
SCLC PDX model (PDX: LU95)
Tumor Growth Inhibition value (TGI) 
≈ 89.8
%
Small cell lung cancer PDX model (PDX: LU149)
Tumor Growth Inhibition value (TGI) 
≈ 92
%
SCLC PDX model (PDX: LU64)
Tumor Growth Inhibition value (TGI) 
≈ 93.5
%
SCLC PDX model (PDX: LU149)
Tumor Growth Inhibition value (TGI) 
≈ 94.78
%
Small cell lung cancer PDX model (PDX: LU95)
Tumor Growth Inhibition value (TGI) 
≈ 96
%
Small cell lung cancer PDX model (PDX: LU64)
Tumor Growth Inhibition value (TGI) 
≈ 96.8
%
SCLC PDX model (PDX: LU95)
Tumor Growth Inhibition value (TGI) 
≈ 97
%
SCLC PDX model (PDX: LU95)
Tumor Growth Inhibition value (TGI) 
≈ 98
%
SCLC PDX model (PDX: LU64)
Tumor Growth Inhibition value (TGI) 
≈ 98.4
%
SCLC PDX model (PDX: LU64)
Tumor Growth Inhibition value (TGI) 
≈ 98.7
%
SCLC PDX model (PDX: LU149)
Tumor Growth Inhibition value (TGI) 
≈ 99.6
%
Small cell lung cancer PDX model (PDX: LU95)
Tumor Growth Inhibition value (TGI) 
≈ 99.8
%
Small cell lung cancer PDX model (PDX: LU95)
Tumor Growth Inhibition value (TGI) 
≈ 100
%
Small cell lung cancer PDX model (PDX: LU149)
Tumor Growth Inhibition value (TGI) 
≈ 100
%
Small cell lung cancer PDX model (PDX: LU64)
Tumor Growth Inhibition value (TGI) 
≈ 100
%
Small cell lung cancer PDX model (PDX: LU64)
Full List of Activity Data of This Antibody-drug Conjugate
Identified from the Human Clinical Data
Click To Hide/Show 3 Activity Data Related to This Level
Experiment 1 Reporting the Activity Date of This ADC [1]
Efficacy Data Objective Response Rate (ORR)
25%
Patients Enrolled
Eligible participants have relapsed/refractory SCLC (1-3 prior lines), measurable disease (RECIST v1.1), ECOG 0-1, and adequate organ function. Key exclusions: cirrhosis, cardiac disease (>6 months prior), active infections, autoimmune/neurologic conditions, or hypersensitivity to study drugs. SEZ6+ tumor tissue is required for Parts B/C. Additional exclusions for Part C include neuropathy ≥G2, IBD, or prior anti-PD-1/PD-L1 with unresolved irAEs.

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Administration Dosage
ABBV-011 was administered intravenously at doses from 0.3 to 2.0 mg/kg once every 3 weeks. Dose expansion was conducted in SEZ6-selected patients.
Related Clinical Trial
NCT Number NCT03639194  Clinical Status PHASE1
Clinical Description A Phase I Study of ABBV-011 as a Single-Agent and in Combination With Budigalimab (ABBV-181) in Subjects With Relapsed or Refractory Small Cell Lung Cancer
Primary Endpoint
The study evaluates AEs, SAEs, DLTs, and determines MTD/RP2D for ABBV-011 alone and in combination with budigalimab over ~5 years, alongside monitoring vital signs, lab abnormalities, and ECG changes.
Other Endpoint
PK parameters (Cmax, AUC, Tmax, T1/2, etc.) and immunogenicity (ADA) for ABBV-011 are assessed. Efficacy endpoints include ORR, CBR, DOR, DOCB, PFS, and OS per RECIST v1.1 over ~5 years.
Experiment 2 Reporting the Activity Date of This ADC [1]
Efficacy Data Clinical benefit rate (CBR)
64%
Patients Enrolled
Eligible participants have relapsed/refractory SCLC (1-3 prior lines), measurable disease (RECIST v1.1), ECOG 0-1, and adequate organ function. Key exclusions: cirrhosis, cardiac disease (>6 months prior), active infections, autoimmune/neurologic conditions, or hypersensitivity to study drugs. SEZ6+ tumor tissue is required for Parts B/C. Additional exclusions for Part C include neuropathy ≥G2, IBD, or prior anti-PD-1/PD-L1 with unresolved irAEs.

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Administration Dosage
ABBV-011 was administered intravenously at doses from 0.3 to 2.0 mg/kg once every 3 weeks. Dose expansion was conducted in SEZ6-selected patients.
Related Clinical Trial
NCT Number NCT03639194  Clinical Status PHASE1
Clinical Description A Phase I Study of ABBV-011 as a Single-Agent and in Combination With Budigalimab (ABBV-181) in Subjects With Relapsed or Refractory Small Cell Lung Cancer
Primary Endpoint
The study evaluates AEs, SAEs, DLTs, and determines MTD/RP2D for ABBV-011 alone and in combination with budigalimab over ~5 years, alongside monitoring vital signs, lab abnormalities, and ECG changes.
Other Endpoint
PK parameters (Cmax, AUC, Tmax, T1/2, etc.) and immunogenicity (ADA) for ABBV-011 are assessed. Efficacy endpoints include ORR, CBR, DOR, DOCB, PFS, and OS per RECIST v1.1 over ~5 years.
Experiment 3 Reporting the Activity Date of This ADC [2]
Related Clinical Trial
NCT Number NCT03639194  Clinical Status Phase 1
Clinical Description A phase 1 study of ABBV-011 as a single-agent and in combination with budigalimab (ABBV-181) in subjects with relapsed or refractory small cell lung cancer.
Discovered Using Patient-derived Xenograft Model
Click To Hide/Show 22 Activity Data Related to This Level
Experiment 1 Reporting the Activity Date of This ADC [3]
Efficacy Data Tumor Growth Inhibition value (TGI) ≈ 15.30% Positive SEZ6 expression (SEZ6+++/++)
Method Description
ABBV-011 LD(NAC-LD19.10)=0.24 mg/kg.
In Vivo Model SCLC PDX model (PDX: LU64)
Experiment 2 Reporting the Activity Date of This ADC [3]
Efficacy Data Tumor Growth Inhibition value (TGI) ≈ 35.60% Positive SEZ6 expression (SEZ6+++/++)
Method Description
ABBV-011 induces efficient tumor cell killing in cell line-derived models of LU64 and LU149 cells with SC17 expression with high expression.
In Vivo Model Small cell lung cancer PDX model (PDX: LU149)
Experiment 3 Reporting the Activity Date of This ADC [3]
Efficacy Data Tumor Growth Inhibition value (TGI) ≈ 42.85% Negative SEZ6 expression (SEZ6-)
Method Description
ABBV-011 induces efficient tumor cell killing in cell line-derived models of LU64 and LU149 cells with SC17 expression with high expression.
In Vivo Model Small cell lung cancer PDX model (PDX: LU505)
Experiment 4 Reporting the Activity Date of This ADC [3]
Efficacy Data Tumor Growth Inhibition value (TGI) ≈ 45.90% Positive SEZ6 expression (SEZ6+++/++)
Method Description
ABBV-011 ADC=8mg/kg.
In Vivo Model SCLC PDX model (PDX: LU505)
Experiment 5 Reporting the Activity Date of This ADC [3]
Efficacy Data Tumor Growth Inhibition value (TGI) ≈ 71.70% Positive SEZ6 expression (SEZ6+++/++)
Method Description
ABBV-011 ADC=1 mg/kg.
In Vivo Model SCLC PDX model (PDX: LU149)
Experiment 6 Reporting the Activity Date of This ADC [3]
Efficacy Data Tumor Growth Inhibition value (TGI) ≈ 87% Positive SEZ6 expression (SEZ6+++/++)
Method Description
NAC-LD19.10 ADC=8mg/kg.
In Vivo Model SCLC PDX model (PDX: LU505)
Experiment 7 Reporting the Activity Date of This ADC [3]
Efficacy Data Tumor Growth Inhibition value (TGI) ≈ 89.80% Positive SEZ6 expression (SEZ6+++/++)
Method Description
ABBV-011 ADC=1 mg/kg.
In Vivo Model SCLC PDX model (PDX: LU95)
Experiment 8 Reporting the Activity Date of This ADC [3]
Efficacy Data Tumor Growth Inhibition value (TGI) ≈ 89.80% Positive SEZ6 expression (SEZ6+++/++)
Method Description
ABBV-011 induces efficient tumor cell killing in cell line-derived models of LU64 and LU149 cells with SC17 expression with high expression.
In Vivo Model Small cell lung cancer PDX model (PDX: LU149)
Experiment 9 Reporting the Activity Date of This ADC [3]
Efficacy Data Tumor Growth Inhibition value (TGI) ≈ 92% Positive SEZ6 expression (SEZ6+++/++)
Method Description
ABBV-011 ADC=0.5 mg/kg.
In Vivo Model SCLC PDX model (PDX: LU64)
Experiment 10 Reporting the Activity Date of This ADC [3]
Efficacy Data Tumor Growth Inhibition value (TGI) ≈ 93.50% Positive SEZ6 expression (SEZ6+++/++)
Method Description
ABBV-011 ADC=2 mg/kg.
In Vivo Model SCLC PDX model (PDX: LU149)
Experiment 11 Reporting the Activity Date of This ADC [3]
Efficacy Data Tumor Growth Inhibition value (TGI) ≈ 94.78% Positive SEZ6 expression (SEZ6+++/++)
Method Description
ABBV-011 induces efficient tumor cell killing in cell line-derived models of LU64 and LU149 cells with SC17 expression with high expression.
In Vivo Model Small cell lung cancer PDX model (PDX: LU95)
Experiment 12 Reporting the Activity Date of This ADC [3]
Efficacy Data Tumor Growth Inhibition value (TGI) ≈ 96% Positive SEZ6 expression (SEZ6+++/++)
Method Description
ABBV-011 induces efficient tumor cell killing in cell line-derived models of LU64 and LU149 cells with SC17 expression with high expression.
In Vivo Model Small cell lung cancer PDX model (PDX: LU64)
Experiment 13 Reporting the Activity Date of This ADC [3]
Efficacy Data Tumor Growth Inhibition value (TGI) ≈ 96.80% Positive SEZ6 expression (SEZ6+++/++)
Method Description
ABBV-011 ADC=2 mg/kg.
In Vivo Model SCLC PDX model (PDX: LU95)
Experiment 14 Reporting the Activity Date of This ADC [3]
Efficacy Data Tumor Growth Inhibition value (TGI) ≈ 97% Positive SEZ6 expression (SEZ6+++/++)
Method Description
ABBV-011 ADC=4 mg/kg.
In Vivo Model SCLC PDX model (PDX: LU95)
Experiment 15 Reporting the Activity Date of This ADC [3]
Efficacy Data Tumor Growth Inhibition value (TGI) ≈ 98% Positive SEZ6 expression (SEZ6+++/++)
Method Description
ABBV-011 ADC=1 mg/kg.
In Vivo Model SCLC PDX model (PDX: LU64)
Experiment 16 Reporting the Activity Date of This ADC [3]
Efficacy Data Tumor Growth Inhibition value (TGI) ≈ 98.40% Positive SEZ6 expression (SEZ6+++/++)
Method Description
ABBV-011 ADC=2 mg/kg.
In Vivo Model SCLC PDX model (PDX: LU64)
Experiment 17 Reporting the Activity Date of This ADC [3]
Efficacy Data Tumor Growth Inhibition value (TGI) ≈ 98.70% Positive SEZ6 expression (SEZ6+++/++)
Method Description
ABBV-011 ADC=4 mg/kg.
In Vivo Model SCLC PDX model (PDX: LU149)
Experiment 18 Reporting the Activity Date of This ADC [3]
Efficacy Data Tumor Growth Inhibition value (TGI) ≈ 99.60% Positive SEZ6 expression (SEZ6+++/++)
Method Description
ABBV-011 induces efficient tumor cell killing in cell line-derived models of LU64 and LU149 cells with SC17 expression with high expression.
In Vivo Model Small cell lung cancer PDX model (PDX: LU95)
Experiment 19 Reporting the Activity Date of This ADC [3]
Efficacy Data Tumor Growth Inhibition value (TGI) ≈ 99.80% Positive SEZ6 expression (SEZ6+++/++)
Method Description
ABBV-011 induces efficient tumor cell killing in cell line-derived models of LU64 and LU149 cells with SC17 expression with high expression.
In Vivo Model Small cell lung cancer PDX model (PDX: LU95)
Experiment 20 Reporting the Activity Date of This ADC [3]
Efficacy Data Tumor Growth Inhibition value (TGI) ≈ 100% Positive SEZ6 expression (SEZ6+++/++)
Method Description
ABBV-011 induces efficient tumor cell killing in cell line-derived models of LU64 and LU149 cells with SC17 expression with high expression.
In Vivo Model Small cell lung cancer PDX model (PDX: LU149)
Experiment 21 Reporting the Activity Date of This ADC [3]
Efficacy Data Tumor Growth Inhibition value (TGI) ≈ 100% Positive SEZ6 expression (SEZ6+++/++)
Method Description
ABBV-011 induces efficient tumor cell killing in cell line-derived models of LU64 and LU149 cells with SC17 expression with high expression.
In Vivo Model Small cell lung cancer PDX model (PDX: LU64)
Experiment 22 Reporting the Activity Date of This ADC [3]
Efficacy Data Tumor Growth Inhibition value (TGI) ≈ 100% Positive SEZ6 expression (SEZ6+++/++)
Method Description
ABBV-011 induces efficient tumor cell killing in cell line-derived models of LU64 and LU149 cells with SC17 expression with high expression.
In Vivo Model Small cell lung cancer PDX model (PDX: LU64)
References
Ref 1 A Study of ABBV-011 Alone and in Combination With Budigalimab (ABBV-181) in Participants With Relapsed or Refractory Small Cell Lung Cancer
Ref 2 A Phase I Study of ABBV-011 as a Single-Agent and in Combination With Budigalimab (ABBV-181) in Subjects With Relapsed or Refractory Small Cell Lung Cancer, NCT03639194
Ref 3 ABBV-011, A Novel, Calicheamicin-Based Antibody-Drug Conjugate, Targets SEZ6 to Eradicate Small Cell Lung Cancer Tumors. Mol Cancer Ther. 2022 Jun 1;21(6):986-998.