GEN1046 Safety Trial in Patients With Malignant Solid Tumors
![]() |
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Know the risks and potential benefits of clinical studies and talk to your health care provider before participating. Read our disclaimer for details. |
ClinicalTrials.gov Identifier: NCT03917381 |
Recruitment Status :
Recruiting
First Posted : April 17, 2019
Last Update Posted : January 26, 2022
|
- Study Details
- Tabular View
- No Results Posted
- Disclaimer
- How to Read a Study Record
Condition or disease | Intervention/treatment | Phase |
---|---|---|
Solid Tumors Non-small Cell Lung Cancer Urothelial Carcinoma Endometrial Carcinoma Triple Negative Breast Cancer Squamous Cell Carcinoma of the Head and Neck Cervical Cancer | Biological: GEN1046 Biological: GEN1046 in combination with docetaxel (in a single expansion cohort) Biological: GEN1046 in combination with pembrolizumab (in a separate expansion cohort) | Phase 1 Phase 2 |
Study Type : | Interventional (Clinical Trial) |
Estimated Enrollment : | 572 participants |
Allocation: | N/A |
Intervention Model: | Sequential Assignment |
Intervention Model Description: | The starting dose is administered as a flat dose. Dose escalation steps are based on safety data |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | First-in-human, Open-label, Dose-escalation Trial With Expansion Cohorts to Evaluate Safety of GEN1046 in Subjects With Malignant Solid Tumors |
Actual Study Start Date : | May 14, 2019 |
Estimated Primary Completion Date : | June 2023 |
Estimated Study Completion Date : | December 2023 |

Arm | Intervention/treatment |
---|---|
Experimental: Arm
GEN1046 Open label, single arm trial where GEN1046 will be administered as monotherapy (or in combination with docetaxel or pembrolizumab in separate expansion cohorts)
|
Biological: GEN1046
GEN1046 will be administered intravenously once every 21 days (in selected expansion cohorts GEN1046 will be administered intravenously once every 21 days for the first 2 cycles, and every 42 days in subsequent cycles) Biological: GEN1046 in combination with docetaxel (in a single expansion cohort) GEN1046 and docetaxel will be administered intravenously once every 21 days. Biological: GEN1046 in combination with pembrolizumab (in a separate expansion cohort) GEN1046 and pembrolizumab will be administered intravenously once every 21 days or every 42 days, respectively |
- Dose limiting toxicity (DLT) [ Time Frame: DLTs are assessed during the first cycle (21 days) in each cohort] ]to determine maximum tolerated dose (MTD) and/or recommended phase 2 dose (RP2D)
- Adverse events [ Time Frame: throughout the study and up to 2 months after last subject last treatment ]Incidence of treatment-emergent adverse events as assessed by CTCAE v5.0
- Safety laboratory parameters (hematology, biochemistry, coagulation, endocrines) [ Time Frame: throughout the study and up to 2 months after last subject last treatment ]Laboratory parameters graded by CTCAE v5.0
- For expansion cohort 1 only: Objective Response Rate (ORR) [ Time Frame: throughout the study and up to 2 months after last subject last treatment ]Objective Response Rate (ORR) per RECIST 1.1 assessed by Independent Review Committee (IRC)
- Objective Response Rate (ORR) [ Time Frame: throughout the study and up to 2 months after last subject last treatment ]Objective Response Rate (ORR) per RECIST 1.1 assessed by Independent Review Committee (IRC)
- PK parameters [ Time Frame: throughout the study and up to 2 months after last subject last treatment ]PK parameters
- Anti-Drug Antibody (ADA) response [ Time Frame: throughout the study and up to 2 months after last subject last treatment ]Anti-Drug Antibody (ADA) response
- Anti-tumor activity, ie, reduction in tumor size according to RECIST 1.1 [ Time Frame: throughout the study and up to 2 months after last subject last treatment ]
- Objective Response Rate (ORR)
- Disease Control Rate (DCR)
- Duration of Response (DoR)
- For expansion cohort 1 only: Adverse events (AEs) [ Time Frame: throughout the study and up to 2 months after last subject last treatment ]Adverse events (AEs)
- For expansion cohort 1 only: Laboratory parameters [ Time Frame: throughout the study and up to 2 months after last subject last treatment ]Laboratory parameters graded by CTCAE v5.0
- For expansion cohort 1 only: Duration of response (DoR) [ Time Frame: throughout the study and up to 2 months after last subject last treatment ]Duration of response (DoR), PFS per RECIST 1.1 assessed by IRC
- For expansion cohort 1 only: ORR, DoR, PFS per RECIST 1.1 assessed by investigator [ Time Frame: throughout the study and up to 2 months after last subject last treatment ]ORR, DoR, PFS per RECIST 1.1 assessed by investigator
- For expansion cohort 1 only: Overall survival (OS) [ Time Frame: throughout the study and up to 2 months after last subject last treatment ]Overall survival (OS)

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Key Inclusion Criteria:
For Dose Escalation:
• Have a histologically or cytologically confirmed non-CNS solid tumor that is metastatic or unresectable and for whom there is no available standard therapy
For Expansion:
• Have histologically or cytological confirmed diagnosis of relapsed or refractory, advanced and/or metastatic NSCLC, EC, UC, TNBC, SCCHN, or cervical cancer who are not anymore candidates for standard therapy For two separate expansion cohorts: metastatic NSCLC without prior systemic treatment regimens for metastatic disease.
For Both Dose Escalation and Expansion
- Have measurable disease according to RECIST 1.1
- Have Eastern Cooperative Oncology Group (ECOG) 0-1
- Have an acceptable hematological status
- Have acceptable liver function
- Have an acceptable coagulation status
- Have acceptable renal function
Key Exclusion Criteria:
-
Have uncontrolled intercurrent illness, including but not limited to:
- Ongoing or active infection requiring intravenous treatment with antiinfective therapy
- Symptomatic congestive heart failure (Grade III or IV as classified by the New York Heart Association), unstable angina pectoris or cardiac arrhythmia
- Uncontrolled hypertension defined as systolic blood pressure ≥ 160 mmHg and/or diastolic blood pressure ≥ 100 mmHg, despite optimal medical management
- Ongoing or recent evidence of autoimmune disease
- History of irAEs that led to prior checkpoint treatment discontinuation
- Prior history of myositis, Guillain-Barré syndrome, or myasthenia gravis of any grade
- History of chronic liver disease or evidence of hepatic cirrhosis
- History of non-infectious pneumonitis that has required steroids or currently has pneumonitis
- History of organ allograft (except for corneal transplant) or autologous or allogeneic bone marrow transplant, or stem cell rescue within 3 months prior to the first dose of GEN1046
- Serious, non-healing wound, skin ulcer (of any grade), or bone fracture
- Any history of intracerebral arteriovenous malformation, cerebral aneurysm, new (younger than 6 months) or progressive brain metastases or stroke
-
Prior therapy:
- Radiotherapy: Radiotherapy within 14 days prior to first GEN1046 administration. Palliative radiotherapy will be allowed.
- Treatment with an anti-cancer agent (within 28 days or after at least 5 half-lives of the drug, whichever is shorter), prior to GEN1046 administration. Accepted exceptions are bisphosphonates (e.g., pamidronate, zoledronic acid, etc.) and denosumab
- Toxicities from previous anti-cancer therapies that have not adequately resolved
NOTE: Other protocol defined Inclusion/Exclusion criteria may apply.

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT03917381
Contact: Genmab Trial Information | +4570202728 | clinicaltrials@genmab.com |

Responsible Party: | Genmab |
ClinicalTrials.gov Identifier: | NCT03917381 |
Other Study ID Numbers: |
GCT1046-01 2018-003402-63 ( EudraCT Number ) |
First Posted: | April 17, 2019 Key Record Dates |
Last Update Posted: | January 26, 2022 |
Last Verified: | January 2022 |
Studies a U.S. FDA-regulated Drug Product: | Yes |
Studies a U.S. FDA-regulated Device Product: | No |
Product Manufactured in and Exported from the U.S.: | No |
Carcinoma Triple Negative Breast Neoplasms Squamous Cell Carcinoma of Head and Neck Endometrial Neoplasms Neoplasms, Glandular and Epithelial Neoplasms by Histologic Type Neoplasms Neoplasms by Site Carcinoma, Squamous Cell Uterine Neoplasms Genital Neoplasms, Female Urogenital Neoplasms Uterine Diseases |
Breast Neoplasms Breast Diseases Skin Diseases Head and Neck Neoplasms Docetaxel Pembrolizumab Antineoplastic Agents Tubulin Modulators Antimitotic Agents Mitosis Modulators Molecular Mechanisms of Pharmacological Action Antineoplastic Agents, Immunological |