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A Safety and Antitumor Activity Trial of Immunoradiotherapy Combinations as a Treatment Option for Subjects With Metastatic Solid Tumors

A Phase 1 Dose Finding and Phase 2, Randomized, Open-Label Trial to Evaluate the Safety and Clinical Activity of Immunoradiotherapy Combinations as a Treatment Option in Subjects With Metastatic Solid Tumors

Status
Terminated
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05491317
Enrollment
13
Registered
2022-08-08
Start date
2023-03-08
Completion date
2025-08-11
Last updated
2026-08-12

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Non-CNS Tumor

Brief summary

The main purpose is to assess the safety and clinical activity of GEN1042 in combination with radiotherapy or GEN1042 in combination with radiotherapy and pembrolizumab as a treatment option for participants with metastatic solid tumors.

Detailed description

The study will be conducted in two parts: Part 1 (dose-finding) and Part 2 (randomization). Part 1 will evaluate the safety of immunoradiotherapy combinations and establish the dose(s) to be evaluated in Part 2. Part 2 will evaluate the anti-tumor activity of immunoradiotherapy combinations at the established dose(s) from Part 1. Participants in both parts are treated with one of the following combinations: * Radiotherapy + GEN1042 * Radiotherapy + GEN1042 + Pembrolizumab While participants in Part 1 are assigned sequentially (GEN1042 without pembrolizumab is investigated first), participants in Part 2 are randomized 1:1 in the two treatment arms.

Interventions

BIOLOGICALGEN1042

Intravenous

DRUGPembrolizumab

Intravenous

RADIATIONRadiotherapy

Radiotherapy

Sponsors

Genmab
Lead SponsorINDUSTRY
BioNTech SE
CollaboratorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

Part 1 is sequential, Part 2 is parallel (randomized)

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

Key Inclusion Criteria: * Participants with histologically confirmed non-central nervous system (CNS) solid tumor that is metastatic and for whom there is no available standard therapy. * At least 18 years of age. * Signed informed consent prior to any screening procedures. * Measurable disease according to RECIST v1.1. * Life expectancy of \>3 months. * Qualify for palliative radiotherapy as an available option for disease management. * Eastern Cooperative Oncology Group (ECOG) 0-1. * Normal or adequate liver, renal, cardiac and bone marrow function. Key

Exclusion criteria

* Prior malignancy except for non-melanoma skin cancers and in situ cancers. * Condition contraindicating radiotherapy. * Rapidly progressing disease. * Active, known or suspected autoimmune disease. * History of non-infectious pneumonitis that required steroids or currently has pneumonitis. * Contraindications to the use of pembrolizumab. * Condition requiring systemic treatment with either corticosteroids or other immunosuppressive medications within 14 days of first treatment. * Received an allogeneic tissue/solid organ transplant. * Active infection requiring systemic therapy. Note: Other protocol defined inclusion and

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Dose Limiting Toxicities (DLTs)21 daysA DLT was defined as any grade 5 toxicity, treatment-related toxicity that caused the participant to discontinue treatment during Cycle 1, febrile neutropenia grade 3 or grade 4, grade 3 thrombocytopenia associated with clinically significant bleeding, grade 4 thrombocytopenia of any duration, grade 4 anemia, any grade ≥3 non-hematologic clinical (non-laboratory) toxicity with exceptions per protocol, any grade 3 or grade 4 non-hematologic laboratory value if clinically significant medical intervention was required to treat the participant or the abnormality led to hospitalization, or the abnormality persisted for \>7 days, and the abnormality resulted in a drug-induced liver injury (DILI) as defined by Hy's Law. Toxicities were graded for severity according to the National Cancer Institute-Common Terminology Criteria for Adverse Events Version 5.0 (NCI-CTCAE v5.0).

Secondary

MeasureTime frameDescription
Number of Participants With Anti-drug Antibodies (ADAs)Up to approximately 2 years 5 monthsVenous blood samples were drawn for analysis of ADAs. Data are reported for the number of participants with an on-treatment ADA status of positive. For on-treatment results, a participant was considered ADA positive if either 1) ADA was negative at baseline and at least one on-treatment result was positive 2) positive at baseline and at least one positive on-treatment result with at least one titer higher than baseline.
Objective Response Rate (ORR)Up to approximately 2 years 5 monthsORR was defined as the percentage of participants with a confirmed best overall response (BOR) of complete response (CR) or partial response (PR) based on Response Evaluation Criteria in Solid Tumors Version 1.1 (RECIST) v1.1 as assessed by investigator. CR was defined as all of the following: disappearance of all target and non-target tumor lesions, and reduction in short axis to \<10 millimeters (mm) in all pathological target and non-target lesions. PR was defined as ≥30 percent (%) decrease in the sum of diameters of target lesions, taking as reference the baseline sum diameters.
Duration of Response (DOR)Up to approximately 2 years 5 monthsDOR was defined as the time from the onset date of response to the date of the first documented progression or death due to any cause based on RECIST v1.1 as assessed by investigator.
Disease Control Rate (DCR)Up to approximately 2 years 5 monthsDCR was defined as the percentage of participants with BOR of CR, PR, and stable disease (SD) according to RECIST v1.1 as assessed by investigator. CR was defined as all of the following: disappearance of all target and non-target tumor lesions, and reduction in short axis to \<10 millimeters (mm) in all pathological target and non-target lesions. PR was defined as ≥30 percent (%) decrease in the sum of diameters of target lesions, taking as reference the baseline sum diameters. SD was defined as neither sufficient shrinkage to qualify for PR nor sufficient increase to qualify for progressive disease (PD).
Progression Free Survival (PFS)Up to approximately 2 years 5 monthsPFS was defined as the time from the date of randomization (or date of first administration of GEN1042 ± pembrolizumab treatment for participants in Part 1) to the date of the first documented progression or death due to any cause based on RECIST v1.1 as assessed by investigator.
Overall Survival (OS)Up to approximately 2 years 5 monthsOS was defined as the time from date of randomization (or date of first administration of GEN1042 ± pembrolizumab treatment for participants in Part 1) to date of death due to any cause.
Number of Participants With Abscopal Response in Non-irradiated Target Lesions As Assessed by the InvestigatorUp to approximately 2 years 5 monthsAn abscopal response described radiotherapy (RT)-induced immune-mediated tumor regression at sites distant to the irradiated field. For the purpose of this trial, an abscopal response was defined as a reduction of at least 30% in diameter of the best responding unirradiated target lesion. Data are reported for the number of participants with abscopal response in non-irradiated target lesions as assessed by the investigator.
Blood Concentration of GEN1042 Over TimeAt multiple timepoints (as described in the "Outcome Measure Description" field between Cycle 1 Day 1 up to Safety Follow Up [up to approximately Day 517]). Cycles were 21 days in length.Blood samples were collected for measurement of serum concentrations of GEN1042. Data are reported for Cycle (C)1 Day (D)1 pre-dose and end of infusion (EOI), C1D8, C1D15, C2D1 pre-dose and end of infusion, C2D8, C2D15, C3D1 pre-dose and end of infusion,C4D1 pre-dose and end of infusion,C4D8, C5D1 pre-dose and end of infusion, C7D1 pre-dose and end of infusion,C11D1 end of infusion,C12D1 end of infusion+2 hours,C15D1 end of infusion,C19D1 end of infusion,C23D1 end of infusion, End of Treatment (\~D487) and Safety Follow Up (\~D517). Cycles were 21 days in length.
Number of Participants With Treatment-emergent Adverse Events (TEAEs)Up to approximately 2 years 5 monthsAn adverse event (AE) was any untoward medical occurrence in a participant or clinical trial participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. An AE was therefore any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of a medicinal product. A TEAE was any AE that occurred or worsened after the first dose of trial treatment. A summary of all Serious Adverse Events and Other Adverse Events (non-serious) regardless of causality is located in the 'Reported Adverse Events' Section.

Countries

France

Contacts

STUDY_DIRECTORStudy Official

Genmab

Participant flow

Pre-assignment details

This trial was planned to be conducted in two parts, Part 1 and Part 2. The trial was terminated early after Part 1 (27 Gy Cohorts). Part 2 was not initiated.

Baseline characteristics

Characteristic
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
5 Participants
Age, Categorical
Between 18 and 65 years
8 Participants
Age, Continuous52.3 years
STANDARD_DEVIATION 10.1
Race/Ethnicity, Customized
American Indian or Alaska Native
0 Participants
Race/Ethnicity, Customized
Asian
0 Participants
Race/Ethnicity, Customized
Black or African American
0 Participants
Race/Ethnicity, Customized
Hispanic or Latino
0 Participants
Race/Ethnicity, Customized
Native Hawaiian or Other Pacific Islander
0 Participants
Race/Ethnicity, Customized
Not Hispanic or Latino
0 Participants
Race/Ethnicity, Customized
Not Reported
6 Participants
Race/Ethnicity, Customized
Other
0 Participants
Race/Ethnicity, Customized
Unknown
6 Participants
Race/Ethnicity, Customized
White
0 Participants
Region of Enrollment
France
6 Participants
Sex: Female, Male
Female
3 Participants
Sex: Female, Male
Male
4 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
4 / 63 / 7
other
Total, other adverse events
6 / 67 / 7
serious
Total, serious adverse events
2 / 62 / 7

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Aug 13, 2026