Trial Outcomes & Findings for Study of Seribantumab in Adult Patients With NRG1 Gene Fusion Positive Advanced Solid Tumors (NCT NCT04383210)

NCT ID: NCT04383210

Last Updated: 2025-04-03

Results Overview

Tumor assessments were evaluated at baseline by computerized tomography (CT) or magnetic resonance imaging (MRI). The primary objective of this study was to determine the overall objective response rate (ORR) per investigator assessment, defined as confirmed complete response (CR; disappearance of all target lesions) + partial response (PR; at least a 30% decrease in the sum of the longest diameter of target lesions) by RECIST v1.1, for seribantumab monotherapy (3,000 mg QW) in patients with centrally confirmed NRG1 fusion.

Recruitment status

TERMINATED

Study phase

PHASE2

Target enrollment

54 participants

Primary outcome timeframe

Up to 12 months

Results posted on

2025-04-03

Participant Flow

Participant milestones

Participant milestones
Measure
Cohort 1
Enrolled 36 adult advanced solid tumor patients harboring NRG1 gene fusions, who have received prior standard treatment, excluding prior ERBB-directed therapy. Seribantumab 1-h IV infusion at various doses once weekly, every 2 weeks and every 3 weeks, during the induction, consolidation and maintenance dosing phases, respectively. Seribantumab: Anti-HER3 monoclonal antibody
Cohort 2
Enrolled 11 adult advanced solid tumor patients harboring NRG1 gene fusions, who have received prior standard treatment, including prior ERBB-directed therapy. Seribantumab 1-h IV infusion at various doses once weekly, every 2 weeks and every 3 weeks, during the induction, consolidation and maintenance dosing phases, respectively. Seribantumab: Anti-HER3 monoclonal antibody
Cohort 3
Enrolled 7 adult advanced solid tumor patients harboring NRG1 gene fusions lacking an EGF-like domain, who have received prior standard treatment, which may have included prior ERBB-directed therapy. Seribantumab 1-h IV infusion at various doses once weekly, every 2 weeks and every 3 weeks, during the induction, consolidation and maintenance dosing phases, respectively. Seribantumab: Anti-HER3 monoclonal antibody
Overall Study
STARTED
36
11
7
Overall Study
COMPLETED
36
11
7
Overall Study
NOT COMPLETED
0
0
0

Reasons for withdrawal

Withdrawal data not reported

Baseline Characteristics

Study of Seribantumab in Adult Patients With NRG1 Gene Fusion Positive Advanced Solid Tumors

Baseline characteristics by cohort

Baseline characteristics by cohort
Measure
Cohort 1
n=36 Participants
Enrolled 36 adult advanced solid tumor patients harboring NRG1 gene fusions, who have received prior standard treatment, excluding prior ERBB-directed therapy. Seribantumab 1-h IV infusion at various doses once weekly, every 2 weeks and every 3 weeks, during the induction, consolidation and maintenance dosing phases, respectively. Seribantumab: Anti-HER3 monoclonal antibody
Cohort 2
n=11 Participants
Enrolled 11 adult advanced solid tumor patients harboring NRG1 gene fusions, who have received prior standard treatment, including prior ERBB-directed therapy. Seribantumab 1-h IV infusion at various doses once weekly, every 2 weeks and every 3 weeks, during the induction, consolidation and maintenance dosing phases, respectively. Seribantumab: Anti-HER3 monoclonal antibody
Cohort 3
n=7 Participants
Enrolled 7 adult advanced solid tumor patients harboring NRG1 gene fusions lacking an EGF-like domain, who have received prior standard treatment, which may have included prior ERBB-directed therapy. Seribantumab 1-h IV infusion at various doses once weekly, every 2 weeks and every 3 weeks, during the induction, consolidation and maintenance dosing phases, respectively. Seribantumab: Anti-HER3 monoclonal antibody
Total
n=54 Participants
Total of all reporting groups
Age, Categorical
<=18 years
0 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
0 Participants
n=7 Participants
Age, Categorical
Between 18 and 65 years
21 Participants
n=99 Participants
6 Participants
n=107 Participants
3 Participants
n=206 Participants
30 Participants
n=7 Participants
Age, Categorical
>=65 years
15 Participants
n=99 Participants
5 Participants
n=107 Participants
4 Participants
n=206 Participants
24 Participants
n=7 Participants
Age, Continuous
61 years
n=99 Participants
59 years
n=107 Participants
66 years
n=206 Participants
62 years
n=7 Participants
Sex: Female, Male
Female
22 Participants
n=99 Participants
7 Participants
n=107 Participants
5 Participants
n=206 Participants
34 Participants
n=7 Participants
Sex: Female, Male
Male
14 Participants
n=99 Participants
4 Participants
n=107 Participants
2 Participants
n=206 Participants
20 Participants
n=7 Participants
Race (NIH/OMB)
American Indian or Alaska Native
1 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
1 Participants
n=7 Participants
Race (NIH/OMB)
Asian
4 Participants
n=99 Participants
4 Participants
n=107 Participants
0 Participants
n=206 Participants
8 Participants
n=7 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
0 Participants
n=7 Participants
Race (NIH/OMB)
Black or African American
5 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
5 Participants
n=7 Participants
Race (NIH/OMB)
White
26 Participants
n=99 Participants
6 Participants
n=107 Participants
7 Participants
n=206 Participants
39 Participants
n=7 Participants
Race (NIH/OMB)
More than one race
0 Participants
n=99 Participants
0 Participants
n=107 Participants
0 Participants
n=206 Participants
0 Participants
n=7 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
n=99 Participants
1 Participants
n=107 Participants
0 Participants
n=206 Participants
1 Participants
n=7 Participants
Region of Enrollment
Canada
2 participants
n=99 Participants
2 participants
n=107 Participants
0 participants
n=206 Participants
4 participants
n=7 Participants
Region of Enrollment
United States
32 participants
n=99 Participants
9 participants
n=107 Participants
6 participants
n=206 Participants
47 participants
n=7 Participants
Region of Enrollment
Australia
2 participants
n=99 Participants
0 participants
n=107 Participants
1 participants
n=206 Participants
3 participants
n=7 Participants

PRIMARY outcome

Timeframe: Up to 12 months

Population: Among the 36 patients enrolled in Cohort 1, 29 of 36 patients met criteria (criteria includes centrally confirmed NRG1 fusion status and patient received 3,000 mg QW dosing) to be included in the primary efficacy population and were evaluable for investigator assessed response per RECIST v1.1. In Cohorts 2 and 3, one patient in each cohort was not evaluable for investigator assessed response per RECIST v1.1.

Tumor assessments were evaluated at baseline by computerized tomography (CT) or magnetic resonance imaging (MRI). The primary objective of this study was to determine the overall objective response rate (ORR) per investigator assessment, defined as confirmed complete response (CR; disappearance of all target lesions) + partial response (PR; at least a 30% decrease in the sum of the longest diameter of target lesions) by RECIST v1.1, for seribantumab monotherapy (3,000 mg QW) in patients with centrally confirmed NRG1 fusion.

Outcome measures

Outcome measures
Measure
Cohort 1
n=29 Participants
Enrolled 36 adult advanced solid tumor patients harboring NRG1 gene fusions, who have received prior standard treatment, excluding prior ERBB-directed therapy. Seribantumab 1-h IV infusion at various doses once weekly, every 2 weeks and every 3 weeks, during the induction, consolidation and maintenance dosing phases, respectively. Seribantumab: Anti-HER3 monoclonal antibody
Cohort 2
n=10 Participants
Enrolled 11 adult advanced solid tumor patients harboring NRG1 gene fusions, who have received prior standard treatment, including prior ERBB-directed therapy. Seribantumab 1-h IV infusion at various doses once weekly, every 2 weeks and every 3 weeks, during the induction, consolidation and maintenance dosing phases, respectively. Seribantumab: Anti-HER3 monoclonal antibody
Cohort 3
n=6 Participants
Enrolled 7 adult advanced solid tumor patients harboring NRG1 gene fusions lacking an EGF-like domain, who have received prior standard treatment, which may have included prior ERBB-directed therapy. Seribantumab 1-h IV infusion at various doses once weekly, every 2 weeks and every 3 weeks, during the induction, consolidation and maintenance dosing phases, respectively. Seribantumab: Anti-HER3 monoclonal antibody
Objective Response Rate
10 Participants
1 Participants
0 Participants

Adverse Events

Cohort 1

Serious events: 17 serious events
Other events: 35 other events
Deaths: 21 deaths

Cohort 2

Serious events: 6 serious events
Other events: 11 other events
Deaths: 8 deaths

Cohort 3

Serious events: 4 serious events
Other events: 7 other events
Deaths: 7 deaths

Serious adverse events

Serious adverse events
Measure
Cohort 1
n=36 participants at risk
Enrolled 36 adult advanced solid tumor patients harboring NRG1 gene fusions, who have received prior standard treatment, excluding prior ERBB-directed therapy. Seribantumab 1-h IV infusion at various doses once weekly, every 2 weeks and every 3 weeks, during the induction, consolidation and maintenance dosing phases, respectively. Seribantumab: Anti-HER3 monoclonal antibody
Cohort 2
n=11 participants at risk
Enrolled 11 adult advanced solid tumor patients harboring NRG1 gene fusions, who have received prior standard treatment, including prior ERBB-directed therapy. Seribantumab 1-h IV infusion at various doses once weekly, every 2 weeks and every 3 weeks, during the induction, consolidation and maintenance dosing phases, respectively. Seribantumab: Anti-HER3 monoclonal antibody
Cohort 3
n=7 participants at risk
Enrolled 7 adult advanced solid tumor patients harboring NRG1 gene fusions lacking an EGF-like domain, who have received prior standard treatment, which may have included prior ERBB-directed therapy. Seribantumab 1-h IV infusion at various doses once weekly, every 2 weeks and every 3 weeks, during the induction, consolidation and maintenance dosing phases, respectively. Seribantumab: Anti-HER3 monoclonal antibody
Infections and infestations
Pneumonia
8.3%
3/36 • 3 years, 4 months
9.1%
1/11 • 3 years, 4 months
14.3%
1/7 • 3 years, 4 months
Infections and infestations
COVID-19 pneumonia
2.8%
1/36 • 3 years, 4 months
0.00%
0/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Infections and infestations
Kidney Infection
2.8%
1/36 • 3 years, 4 months
0.00%
0/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Infections and infestations
Sepsis
2.8%
1/36 • 3 years, 4 months
0.00%
0/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Nervous system disorders
Carotid artery insufficiency
2.8%
1/36 • 3 years, 4 months
0.00%
0/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Nervous system disorders
Cerebrovascular accident
2.8%
1/36 • 3 years, 4 months
0.00%
0/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Nervous system disorders
Encephalopathy
2.8%
1/36 • 3 years, 4 months
0.00%
0/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Nervous system disorders
Hepatic encephalopathy
0.00%
0/36 • 3 years, 4 months
0.00%
0/11 • 3 years, 4 months
14.3%
1/7 • 3 years, 4 months
Nervous system disorders
Hypersensitive encephalopathy
2.8%
1/36 • 3 years, 4 months
0.00%
0/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Nervous system disorders
Presyncope
2.8%
1/36 • 3 years, 4 months
0.00%
0/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Nervous system disorders
Seizure
2.8%
1/36 • 3 years, 4 months
0.00%
0/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Gastrointestinal disorders
Ascites
2.8%
1/36 • 3 years, 4 months
0.00%
0/11 • 3 years, 4 months
14.3%
1/7 • 3 years, 4 months
Gastrointestinal disorders
Abdominal pain
0.00%
0/36 • 3 years, 4 months
9.1%
1/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Gastrointestinal disorders
Abdominal pain upper
2.8%
1/36 • 3 years, 4 months
0.00%
0/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Gastrointestinal disorders
Intra-abdominal hemorrhage
2.8%
1/36 • 3 years, 4 months
0.00%
0/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Gastrointestinal disorders
Vomiting
0.00%
0/36 • 3 years, 4 months
0.00%
0/11 • 3 years, 4 months
14.3%
1/7 • 3 years, 4 months
Neoplasms benign, malignant and unspecified (incl cysts and polyps)
Malignant neoplasm progression
5.6%
2/36 • 3 years, 4 months
18.2%
2/11 • 3 years, 4 months
14.3%
1/7 • 3 years, 4 months
Respiratory, thoracic and mediastinal disorders
Pleural effusion
5.6%
2/36 • 3 years, 4 months
0.00%
0/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Respiratory, thoracic and mediastinal disorders
Pulmonary embolism
5.6%
2/36 • 3 years, 4 months
0.00%
0/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Respiratory, thoracic and mediastinal disorders
Aspiration
2.8%
1/36 • 3 years, 4 months
0.00%
0/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Respiratory, thoracic and mediastinal disorders
Dyspnea
2.8%
1/36 • 3 years, 4 months
0.00%
0/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Respiratory, thoracic and mediastinal disorders
Pulmonary edema
0.00%
0/36 • 3 years, 4 months
9.1%
1/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Cardiac disorders
Arrythmia
2.8%
1/36 • 3 years, 4 months
0.00%
0/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Cardiac disorders
Atrial fibrillation
0.00%
0/36 • 3 years, 4 months
9.1%
1/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Cardiac disorders
Cardiac tamponade
0.00%
0/36 • 3 years, 4 months
9.1%
1/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Cardiac disorders
Sinus tachycardia
2.8%
1/36 • 3 years, 4 months
0.00%
0/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Injury, poisoning and procedural complications
Fall
2.8%
1/36 • 3 years, 4 months
0.00%
0/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Injury, poisoning and procedural complications
Pelvic fracture
0.00%
0/36 • 3 years, 4 months
9.1%
1/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Metabolism and nutrition disorders
Dehydration
2.8%
1/36 • 3 years, 4 months
0.00%
0/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Metabolism and nutrition disorders
Hyponatremia
0.00%
0/36 • 3 years, 4 months
9.1%
1/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Blood and lymphatic system disorders
Anemia
0.00%
0/36 • 3 years, 4 months
9.1%
1/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Hepatobiliary disorders
Hepatic function abnormal
0.00%
0/36 • 3 years, 4 months
9.1%
1/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Investigations
Liver function test increase
0.00%
0/36 • 3 years, 4 months
9.1%
1/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Renal and urinary disorders
Acute kidney injury
2.8%
1/36 • 3 years, 4 months
0.00%
0/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Vascular disorders
Hypertension
2.8%
1/36 • 3 years, 4 months
0.00%
0/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months

Other adverse events

Other adverse events
Measure
Cohort 1
n=36 participants at risk
Enrolled 36 adult advanced solid tumor patients harboring NRG1 gene fusions, who have received prior standard treatment, excluding prior ERBB-directed therapy. Seribantumab 1-h IV infusion at various doses once weekly, every 2 weeks and every 3 weeks, during the induction, consolidation and maintenance dosing phases, respectively. Seribantumab: Anti-HER3 monoclonal antibody
Cohort 2
n=11 participants at risk
Enrolled 11 adult advanced solid tumor patients harboring NRG1 gene fusions, who have received prior standard treatment, including prior ERBB-directed therapy. Seribantumab 1-h IV infusion at various doses once weekly, every 2 weeks and every 3 weeks, during the induction, consolidation and maintenance dosing phases, respectively. Seribantumab: Anti-HER3 monoclonal antibody
Cohort 3
n=7 participants at risk
Enrolled 7 adult advanced solid tumor patients harboring NRG1 gene fusions lacking an EGF-like domain, who have received prior standard treatment, which may have included prior ERBB-directed therapy. Seribantumab 1-h IV infusion at various doses once weekly, every 2 weeks and every 3 weeks, during the induction, consolidation and maintenance dosing phases, respectively. Seribantumab: Anti-HER3 monoclonal antibody
Gastrointestinal disorders
Diarrhea
63.9%
23/36 • 3 years, 4 months
36.4%
4/11 • 3 years, 4 months
14.3%
1/7 • 3 years, 4 months
Gastrointestinal disorders
Nausea
47.2%
17/36 • 3 years, 4 months
9.1%
1/11 • 3 years, 4 months
28.6%
2/7 • 3 years, 4 months
Gastrointestinal disorders
Abdominal pain upper
19.4%
7/36 • 3 years, 4 months
18.2%
2/11 • 3 years, 4 months
14.3%
1/7 • 3 years, 4 months
Gastrointestinal disorders
Vomiting
16.7%
6/36 • 3 years, 4 months
0.00%
0/11 • 3 years, 4 months
28.6%
2/7 • 3 years, 4 months
Gastrointestinal disorders
Abdominal pain
16.7%
6/36 • 3 years, 4 months
9.1%
1/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Gastrointestinal disorders
Constipation
16.7%
6/36 • 3 years, 4 months
0.00%
0/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Gastrointestinal disorders
Dyspepsia
11.1%
4/36 • 3 years, 4 months
9.1%
1/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
General disorders
Fatigue
55.6%
20/36 • 3 years, 4 months
36.4%
4/11 • 3 years, 4 months
42.9%
3/7 • 3 years, 4 months
General disorders
Pyrexia
5.6%
2/36 • 3 years, 4 months
27.3%
3/11 • 3 years, 4 months
28.6%
2/7 • 3 years, 4 months
General disorders
Non-cardiac chest pain
11.1%
4/36 • 3 years, 4 months
18.2%
2/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
General disorders
Peripheral edema
11.1%
4/36 • 3 years, 4 months
9.1%
1/11 • 3 years, 4 months
14.3%
1/7 • 3 years, 4 months
Skin and subcutaneous tissue disorders
Pruritus
16.7%
6/36 • 3 years, 4 months
27.3%
3/11 • 3 years, 4 months
14.3%
1/7 • 3 years, 4 months
Skin and subcutaneous tissue disorders
Rash maculo-papular
11.1%
4/36 • 3 years, 4 months
18.2%
2/11 • 3 years, 4 months
42.9%
3/7 • 3 years, 4 months
Skin and subcutaneous tissue disorders
Rash
16.7%
6/36 • 3 years, 4 months
18.2%
2/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Skin and subcutaneous tissue disorders
Dry skin
8.3%
3/36 • 3 years, 4 months
27.3%
3/11 • 3 years, 4 months
14.3%
1/7 • 3 years, 4 months
Respiratory, thoracic and mediastinal disorders
Cough
19.4%
7/36 • 3 years, 4 months
27.3%
3/11 • 3 years, 4 months
14.3%
1/7 • 3 years, 4 months
Respiratory, thoracic and mediastinal disorders
Dyspnea
22.2%
8/36 • 3 years, 4 months
9.1%
1/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Respiratory, thoracic and mediastinal disorders
Pleural effusion
8.3%
3/36 • 3 years, 4 months
9.1%
1/11 • 3 years, 4 months
14.3%
1/7 • 3 years, 4 months
Respiratory, thoracic and mediastinal disorders
Productive cough
13.9%
5/36 • 3 years, 4 months
0.00%
0/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Respiratory, thoracic and mediastinal disorders
Pulmonary embolism
13.9%
5/36 • 3 years, 4 months
0.00%
0/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months
Musculoskeletal and connective tissue disorders
Back pain
19.4%
7/36 • 3 years, 4 months
0.00%
0/11 • 3 years, 4 months
14.3%
1/7 • 3 years, 4 months
Musculoskeletal and connective tissue disorders
Muscle spasms
16.7%
6/36 • 3 years, 4 months
9.1%
1/11 • 3 years, 4 months
14.3%
1/7 • 3 years, 4 months
Musculoskeletal and connective tissue disorders
Arthralgia
11.1%
4/36 • 3 years, 4 months
0.00%
0/11 • 3 years, 4 months
28.6%
2/7 • 3 years, 4 months
Musculoskeletal and connective tissue disorders
Pain in extremity
8.3%
3/36 • 3 years, 4 months
18.2%
2/11 • 3 years, 4 months
14.3%
1/7 • 3 years, 4 months
Metabolism and nutrition disorders
Hypokalemia
25.0%
9/36 • 3 years, 4 months
18.2%
2/11 • 3 years, 4 months
42.9%
3/7 • 3 years, 4 months
Metabolism and nutrition disorders
Hypomagnesemia
22.2%
8/36 • 3 years, 4 months
36.4%
4/11 • 3 years, 4 months
14.3%
1/7 • 3 years, 4 months
Metabolism and nutrition disorders
Decreased appetite
27.8%
10/36 • 3 years, 4 months
9.1%
1/11 • 3 years, 4 months
14.3%
1/7 • 3 years, 4 months
Musculoskeletal and connective tissue disorders
Myalgia
5.6%
2/36 • 3 years, 4 months
9.1%
1/11 • 3 years, 4 months
28.6%
2/7 • 3 years, 4 months
Nervous system disorders
Headache
25.0%
9/36 • 3 years, 4 months
54.5%
6/11 • 3 years, 4 months
14.3%
1/7 • 3 years, 4 months
Nervous system disorders
Dizziness
19.4%
7/36 • 3 years, 4 months
9.1%
1/11 • 3 years, 4 months
0.00%
0/7 • 3 years, 4 months

Additional Information

Medical Information

Elevation Oncology

Phone: +1-716-371-1125

Results disclosure agreements

  • Principal investigator is a sponsor employee
  • Publication restrictions are in place

Restriction type: LTE60