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A Study of Nanrilkefusp Alfa (SOT101) in Combination With Cetuximab to Evaluate the Efficacy and Safety in Patients With Colorectal Cancer

A Phase 2, Open-label, Single-arm, Multicenter Study to Evaluate the Efficacy and Safety of SOT101 in Combination With Cetuximab in Patients With RAS Wild-type Colorectal Cancer

Status
Terminated
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05619172
Enrollment
16
Registered
2022-11-16
Start date
2022-12-22
Completion date
2024-06-05
Last updated
2025-07-24

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

Conditions

Colorectal Cancer

Keywords

SOT101, SO-C101, Cetuximab, Colorectal cancer, AURELIO-05, Nanrilkefusp alfa

Brief summary

The primary objective of the study is to estimate the antitumor efficacy of nanrilkefusp alfa (SOT101) in combination with cetuximab in RAS wild-type colorectal cancer.

Interventions

Subcutaneous (SC) injection

DRUGCetuximab

Intravenous (IV) infusion via peripheral or central venous line

Sponsors

SOTIO Biotech AG
Lead SponsorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Intervention model description

Study SC105 (AURELIO-05) was a phase 2, open-label, single-arm, multicenter study of nanrilkefusp alfa in combination with cetuximab with an initial safety run-in with 3+3 safety cohorts. Two safety cohorts were implemented. The main cohort was not opened.

Eligibility

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

Inclusion criteria

\*Type of patients\* 1. ≥18 years of age on the day of signing informed consent 2. Ability to understand and sign written informed consent to participate in the study 3. Provides written informed consent for the study 4. Life expectancy \>6 months \*Disease characteristics\* 5. Histologically or cytologically confirmed advanced and/or metastatic colorectal cancer 6. RAS wild type as confirmed by: * locally performed US Food and Drug Administration (FDA)-approved test or an experienced local laboratory using validated test methods for the detection, based on tumor biopsy or * locally performed ctDNA assessment including at least mutations in exon 2 (G12D, G12V, G12C, G12S, G12A, G12R, G13D) and determined by a laboratory using validated test methods * samples must be taken within 3 months prior to first study administration 7. Patients who are relapsed/refractory or intolerant to prior treatment with irinotecan- and oxaliplatin-containing chemotherapy 8. Have at least one measurable lesion according to RECIST 1.1 9. Eastern Cooperative Oncology Group (ECOG) performance score 0-2 10. Must have recovered from all AEs due to previous therapies to grade ≤1 toxicity (excluding alopecia) \*Organ function: Have adequate organ function as defined below. Specimens must be collected within 7 days prior to the start of study treatment.\* 11. Hematology: 11.1. Absolute neutrophil count ≥1,500/µL 11.2. Platelets ≥100,000/µL 11.3. Hemoglobin ≥9.0 g/dL (criteria must be met without packed red blood cell transfusion within the prior 2 weeks; patients can be on stable dose of erythropoietin \[≥3 months\]) 12. Renal function: Creatinine clearance rate ≥50 mL/min as calculated using Cockcroft-Gault equation 13. Hepatic function: ALT/AST ≤2.5× upper limit of normal (ULN) and total bilirubin ≤2×ULN in patients without liver metastasis (benign hereditary hyperbilirubinemias, e.g., Gilbert's syndrome, are permitted if total bilirubin \<3 mg/dL). In patients with liver metastasis, ALT/AST ≤5×ULN is allowed but total bilirubin must be ≤2×ULN. 14. Prothrombin time and activated partial thromboplastin time ≤1.5×ULN \*Hepatitis\* 15. A locally performed hepatitis B (HBV) test is required during screening. Patients who are HBV surface antigen positive are eligible if they have received HBV anti-viral therapy for at least 4 weeks and have undetectable HBV viral load before study entry (ICF signature). Patients should remain on anti-viral therapy throughout study treatment and follow local guidelines for HBV anti-viral therapy post completion of study treatments. 16. A locally performed hepatitis C (HCV) test is required during screening. Patients with history of HCV infection are eligible if HCV viral load is undetectable at screening. Patients must have completed anti-viral therapy at least 4 weeks before study entry (ICF signature). \*Special requirements for contraception\* 17. A female patient is eligible to participate if she is not pregnant, not breastfeeding, and one of the following conditions applies: 17.1. Not a woman of childbearing potential (WOCBP). A WOCBP is defined as fertile, following menarche and until becoming post-menopausal unless permanently sterile. Permanent sterilization methods include hysterectomy, bilateral salpingectomy, and bilateral oophorectomy. A postmenopausal state is defined as no menses for 12 months without an alternative medical cause. A high follicle stimulating hormone level in the postmenopausal range may be used to confirm a post-menopausal state in women not using hormonal contraception or hormonal replacement therapy. However, in the absence of 12 months of amenorrhea, a single follicle stimulating hormone measurement is insufficient. 17.2. A WOCBP who agrees to use a highly effective contraceptive method during the treatment period and for at least 60 days after the last dose of cetuximab or at least 30 days after last dose of nanrilkefusp alfa, whichever is later. A WOCBP can only be included after a negative serum pregnancy test at screening within 7 days before day 1 of cycle 1. 18. Male patients must agree to use a condom during the treatment period and for at least 60 days after the last dose of cetuximab or at least 30 days after last dose of nanrilkefusp alfa, whichever is later.

Exclusion criteria

\*Prior/concomitant therapy\* 1. Prior exposure to drugs that are agonists of IL-2 or IL-15 2. Therapy with cetuximab within 3 months prior to ICF signature or patients who had progressive disease as best response to prior cetuximab-containing regimen 3. Prior systemic anti-cancer therapies, including investigational agents before study entry (ICF signature): 3.1. Less than 3 weeks or 5 half lives (whichever shorter) for anti-cancer treatments 3.2. Less than 4 weeks from major surgeries and not recovered adequately from the procedure and/or any complications from the surgery 4. Has received more than 4 prior lines of systemic anticancer treatment 5. Has received prior radiotherapy within 2 weeks of the start of study treatments. A 1-week radiation-free period is permitted for palliative radiation (≤2 weeks of radiotherapy) to non-central nervous system disease. Patients must have recovered from all radiation-related toxicities and not require corticosteroids. 6. Has received a live or live-attenuated vaccine within 30 days prior to the first dose of study treatments \*Prior/concurrent clinical study experience\* 7. Is currently participating in or has participated in a study of an investigational agent or has used an investigational device within 3 weeks or 5 half lives (whichever longer) before study entry (ICF signature). Patients who have entered the follow-up phase of an investigational study may participate as long as it has been 3 weeks or 5 half lives (whichever longer) after the last dose of the previous investigational agent. \*Medical conditions\* 8. Patients with known BRAF mutations 9. Clinically significant cardiac abnormalities including prior history of any of the following: 9.1. Cardiomyopathy, with left ventricular ejection fraction lower than the lower limit of the institutional normal range at screening 9.2. Congestive heart failure of New York Heart Association grade ≥2 9.3. History of clinically significant (i.e., active) atherosclerotic cardiovascular disease, specifically myocardial infarction, unstable angina, cerebrovascular accident within 6 months prior to the first dose of study treatments, and any history of coronary heart disease and clinically significant peripheral and/or carotid artery disease 9.4. Prolongation of QTcF \>450 msec; history or family history of congenital long QT syndrome 9.5. Uncontrolled cardiac arrhythmia requiring medication 10. Uncontrolled hypertension defined as systolic blood pressure \>160 mmHg, diastolic blood pressure \>110 mmHg. Patients with uncontrolled hypertension should be medically managed on a stable regimen to control hypertension prior to study entry (ICF signature). 11. Has a clinical diagnosis of immunodeficiency or is receiving chronic systemic steroid therapy (in dosing exceeding 10 mg daily of prednisone equivalent) or any other form of immunosuppressive therapy within 7 days prior to the first dose of study treatments. Systemic steroid pretreatment prior to cetuximab infusion according to local guidelines is permitted. 12. History of or serology positive for HIV. A locally performed HIV test is required during screening. 13. Has a known additional malignancy that is progressing or has required active treatment within the past 5 years. Patients with basal cell carcinoma of the skin or carcinoma in situ (e.g., breast carcinoma, cervical cancer in situ) that have undergone potentially curative therapy are eligible. 14. Has known active central nervous system metastases and/or carcinomatous meningitis. Patients with previously treated brain metastases may participate provided they are radiologically stable, i.e., without evidence of progression for at least 4 weeks confirmed during screening. 15. Has an active autoimmune disease that has required systemic treatment in the past 2 years (i.e., with use of disease-modifying agents, corticosteroids, or immunosuppressive drugs). Replacement therapy (e.g., thyroxine, insulin, or physiologic corticosteroid replacement therapy for adrenal or pituitary insufficiency) is not considered a form of systemic treatment and is allowed. 16. Has an active infection requiring systemic therapy 17. Has a history or current evidence of any condition, therapy, or laboratory abnormality that might confound the results of the study, interfere with the patient's participation for the full duration of the study, or is not in the best interest of the patient to participate, in the opinion of the treating investigator 18. Has a known psychiatric or substance abuse disorder that would interfere with the patient's ability to cooperate with the requirements of the study 19. History of hypersensitivity to any component of cetuximab or to compounds of similar biological or chemical composition of nanrilkefusp alfa and/or the excipients contained in the study drug formulations

Design outcomes

Primary

MeasureTime frameDescription
Objective Response Rate According to Response Evaluation Criteria In Solid Tumors Version 1.1 (RECIST 1.1)Day 1 up to approximately 1 year 2 monthsObjective response rate according to RECIST 1.1 was defined as the proportion of participants with complete response according to RECIST 1.1 or partial response according to RECIST 1.1 for target lesions and assessed by CT/MRI. Participants with missing data were considered non-responders.

Secondary

MeasureTime frameDescription
Best Overall Response According to RECIST 1.1: Number of Participants With Complete ResponseDay 1 up to approximately 1 year 5 monthsThe best overall response according to RECIST 1.1 was defined as the best response from the start of study treatment until the first documented disease progression, death, or start of new anti-cancer therapy for target lesions and assessed by CT/MRI.
Best Overall Response According to RECIST 1.1: Number of Participants With Partial ResponseDay 1 up to approximately 1 year 5 monthsThe best overall response according to RECIST 1.1 was defined as the best response from the start of study treatment until the first documented disease progression, death, or start of new anti-cancer therapy for target lesions and assessed by CT/MRI.
Best Overall Response According to RECIST 1.1: Number of Participants With Stable DiseaseDay 1 up to approximately 1 year 5 monthsThe best overall response according to RECIST 1.1 was defined as the best response from the start of study treatment until the first documented disease progression, death, or start of new anti-cancer therapy for target lesions and assessed by CT/MRI. Stable disease according to RECIST 1.1 had to last at least 6 weeks from the start of study treatment. If not, at least 1 follow-up scan was required to declare stable disease.
Best Overall Response According to RECIST 1.1: Number of Participants With Progressive DiseaseDay 1 up to approximately 1 year 5 monthsThe best overall response according to RECIST 1.1 was defined as the best response from the start of study treatment until the first documented disease progression, death, or start of new anti-cancer therapy for target lesions and assessed by CT/MRI.
Best Overall Response According to iRECIST: Number of Participants With Complete ResponseDay 1 up to approximately 1 year 5 monthsThe best overall response according to iRECIST was defined as the best response from the start of study treatment until the first documented disease progression, death, or start of new anti-cancer therapy for target lesions and assessed by CT/MRI.
Best Overall Response According to iRECIST: Number of Participants With Partial ResponseDay 1 up to approximately 1 year 5 monthsThe best overall response according to iRECIST was defined as the best response from the start of study treatment until the first documented disease progression, death, or start of new anti-cancer therapy for target lesions and assessed by CT/MRI.
Best Overall Response According to iRECIST: Number of Participants With Stable DiseaseDay 1 up to approximately 1 year 5 monthsThe best overall response according to iRECIST was defined as the best response from the start of study treatment until the first documented disease progression, death, or start of new anti-cancer therapy for target lesions and assessed by CT/MRI. Stable disease according to iRECIST had to last at least 6 weeks from the start of study treatment. If not, at least 1 follow-up scan was required to declare stable disease.
Best Overall Response According to iRECIST: Number of Participants With Unconfirmed Progressive DiseaseDay 1 up to approximately 1 year 5 monthsThe best overall response according to iRECIST was defined as the best response from the start of study treatment until the first documented disease progression, death, or start of new anti-cancer therapy for target lesions and assessed by CT/MRI.
Best Overall Response According to iRECIST: Number of Participants With Confirmed Progressive DiseaseDay 1 up to approximately 1 year 5 monthsThe best overall response according to iRECIST was defined as the best response from the start of study treatment until the first documented disease progression, death, or start of new anti-cancer therapy for target lesions and assessed by CT/MRI.
Duration of Response According to RECIST 1.1Day 1 up to approximately 1 year 5 monthsDuration of response according to RECIST 1.1 was defined as time to disease progression for participants with partial response or complete response according to RECIST 1.1.
Duration of Response According to iRECISTDay 1 up to approximately 1 year 5 monthsDuration of response according to iRECIST was defined as time to disease progression for participants with partial response or complete response according to iRECIST.
Clinical Benefit Rate According to RECIST 1.1Day 1 up to approximately 1 year 5 monthsClinical benefit rate according to RECIST 1.1 was defined as the number of partial responses, complete responses, and stable disease according to RECIST 1.1. Stable disease had to last at least 6 weeks from the start of study treatment. If not, at least 1 follow-up scan was required to declare stable disease. Participants with missing data were considered non-responders.
Clinical Benefit Rate According to iRECISTDay 1 up to approximately 1 year 5 monthsClinical benefit rate according to iRECIST was defined as the number of partial responses, complete responses, and stable disease according to iRECIST. Stable disease had to last at least 6 weeks from the start of study treatment. If not, at least 1 follow-up scan was required to declare stable disease. Participants with missing data were considered non-responders.
Progression-free Survival According to RECIST 1.1Day 1 up to approximately 1 year 5 monthsProgression-free survival according to RECIST 1.1 was defined as the time from the first day of study treatment to the first date of radiological disease progression according to RECIST 1.1 or death.
Objective Response Rate According to RECIST for Immune-based Therapeutics (iRECIST)Day 1 up to approximately 1 year 5 monthsObjective response rate according to iRECIST was defined as the proportion of participants with complete response according to iRECIST or partial response according to iRECIST for target lesions and assessed by CT/MRI. Participants with missing data were considered non-responders.
Time to Response According to RECIST 1.1Day 1 up to approximately 1 year 5 monthsTime to response according to RECIST 1.1 was defined as the time from the first day of study treatment to the first date of partial response or complete response according to RECIST 1.1. Participants with missing data were censored at the last assessment date, date of death, or date of eligibility (for incomplete or missing baseline tumor assessments), whichever occurred last.
Time to Response According to iRECISTDay 1 up to approximately 1 year 5 monthsTime to response according to iRECIST was defined as the time from the first day of study treatment to the first date of partial response or complete response according to iRECIST. Participants with missing data were censored at the last assessment date, date of death, or date of eligibility (for incomplete or missing baseline tumor assessments), whichever occurred last.
Time to Progression According to RECIST 1.1Day 1 up to approximately 1 year 5 monthsTime to progression according to RECIST 1.1 was defined as the time from the first day of study treatment to the first date of radiological disease progression according to RECIST 1.1.
Time to Progression According to iRECISTDay 1 up to approximately 1 year 5 monthsTime to progression according to iRECIST was defined as the time from the first day of study treatment to the first date of radiological disease progression according to iRECIST.
Number of Participants With Treatment-emergent Adverse EventsDay 1 up to approximately 1 year 5 monthsA treatment-emergent adverse event is defined as an adverse event that started or worsened at or after the start of study treatment.
Number of Participants With Clinical Laboratory Test Abnormalities (Coagulation, Hematology, Clinical Chemistry and Urinalysis)Day 1 up to approximately 1 year 5 monthsThe following laboratory parameters will be assessed: Coagulation: prothrombin time, activated partial thromboplastin time, international normalized ratio, D-dimer, and fibrinogen Hematology: hemoglobin, glycated hemoglobin at screening, hematocrit, red blood cell count, reticulocytes, white blood cell count (with full differentiation), absolute lymphocyte count, and platelet count Clinical chemistry: Na, K, Cl, phosphate, Mg, Ca, albumin, total protein, ALT, AST, bilirubin (direct, total), alkaline phosphatase, lactate dehydrogenase, creatinine clearance calculated by the Cockcroft-Gault formula, creatinine, glucose (preferably fasting), urea or blood urea nitrogen, cholesterol, triglyceride, C-reactive protein, uric acid, amylase, and lipase Urinalysis: pH, glucose, protein, bilirubin, urobilinogen. Microscopic examination (mandated only if clinically indicated): red blood cell count, white blood cell count, epithelial cells, bacteria
Number of Participants With Vital Signs AbnormalitiesDay 1 up to approximately 1 year 5 monthsThe following vital signs parameters will be assessed: Blood pressure (systolic and diastolic, after ≥5 minutes of rest), body temperature, and heart rate
Number of Participants With Electrocardiography AbnormalitiesDay 1 up to approximately 1 year 5 monthsStandard 12-lead electrocardiography was evaluated locally.
Number of Participants With Dose-limiting Toxicities (DLTs)Through Cycle 1 (21 days)The following adverse events as per NCI CTCAE version 5.0 were considered dose-limiting toxicities: * All grade 5 events not clearly related to disease progression or any other causes * Any grade 3 or higher non-hematologic toxicity regardless of duration; exceptions: * Grade 3 nausea, vomiting, or diarrhea that could be controlled within 72 hours * Grade 3 fatigue lasting less than 5 days * Grade 3 or higher correctable electrolyte abnormalities lasting less than 72 hours and not associated with clinical complications * Grade 3 or higher serum amylase or lipase not associated with clinical manifestations of pancreatitis * Grade 3 AST or ALT increase or grade 3 blood bilirubin increase lasting 5 days or less * Hy's law cases * Hematologic DLTs: * Grade 4 decreased neutrophil count or decreased platelet count lasting more than 7 days * Febrile neutropenia * Grade 3 or higher decreased platelet count with bleeding
Characterization of Area Under the Curve of Nanrilkefusp AlfaDay 1 of Cycle 1At 9 µg/kg nanrilkefusp alfa on Day 1 of Cycle 1
Characterization of Maximum Concentration of Nanrilkefusp Alfa on Day 1 of Cycle 1Day 1 of Cycle 1At 9 µg/kg nanrilkefusp alfa
Characterization of Time to Maximum Concentration of Nanrilkefusp Alfa on Day 1 of Cycle 1Day 1 of Cycle 1At 9 µg/kg nanrilkefusp alfa
Characterization of Pre-dose Concentration of Nanrilkefusp Alfa on Day 1 of Cycle 1Day 1 of Cycle 1At 9 µg/kg nanrilkefusp alfa
Incidence of Treatment-induced Anti-drug Antibodies Against Nanrilkefusp AlfaDay 1 until 30 (±2) days after the last dose of nanrilkefusp alfa, up to approximately 1 year 5 monthsAt 9 µg/kg and 12 µg/kg nanrilkefusp alfa
Progression-free Survival According to iRECISTDay 1 up to approximately 1 year 5 monthsProgression-free survival according to iRECIST was defined as the time from the first day of study treatment to the first date of radiological disease progression according to iRECIST or death.

Countries

Belgium, France, Spain

Participant flow

Participants by arm

ArmCount
Nanrilkefusp Alfa and Cetuximab
Participants were treated with nanrilkefusp alfa (safety cohort 1: 14 participants with 9 µg/kg nanrilkefusp alfa; safety cohort 2: 2 participants with 12 µg/kg nanrilkefusp alfa) in combination with cetuximab. Per statistical considerations outlined in the trial Protocol and Statistical Analysis Plan, all patients were analyzed within pre-specified populations across the entire trial. There was no plan to analyze cohorts separately; therefore, results are presented in aggregate. The trial was a single-arm design, not a classic dose-escalation study, as the RP2D (12 µg/kg) had been established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort allowing one-way crossover to 12 µg/kg. Nanrilkefusp alfa treatment was administered on day 1 (from cycle 2 onwards, ±1 day), day 2 (±1 day), day 8 (±1 day), and day 9 (±1 day) of each 21-day cycle. Cetuximab treatment was administered on day 1 (from cycle 2 onwards, ±1 day), day 8 (±1 day), and day 15 (±1 day) of each 21-day cycle; on day 1 and day 8, cetuximab infusion started within 30 minutes after nanrilkefusp alfa administration.
16
Total16

Withdrawals & dropouts

PeriodReasonFG000FG001
Safety Cohort 1Death70
Safety Cohort 1Study terminated by sponsor70
Safety Cohort 2Death01
Safety Cohort 2Study terminated by sponsor01

Baseline characteristics

CharacteristicNanrilkefusp Alfa and Cetuximab
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
5 Participants
Age, Categorical
Between 18 and 65 years
11 Participants
Age, Continuous60 years
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
12 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
4 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
0 Participants
Race (NIH/OMB)
Black or African American
0 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
4 Participants
Race (NIH/OMB)
White
12 Participants
Region of Enrollment
Belgium
7 participants
Region of Enrollment
France
3 participants
Region of Enrollment
Spain
6 participants
Sex: Female, Male
Female
6 Participants
Sex: Female, Male
Male
10 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
7 / 141 / 2
other
Total, other adverse events
14 / 142 / 2
serious
Total, serious adverse events
7 / 141 / 2

Outcome results

Primary

Objective Response Rate According to Response Evaluation Criteria In Solid Tumors Version 1.1 (RECIST 1.1)

Objective response rate according to RECIST 1.1 was defined as the proportion of participants with complete response according to RECIST 1.1 or partial response according to RECIST 1.1 for target lesions and assessed by CT/MRI. Participants with missing data were considered non-responders.

Time frame: Day 1 up to approximately 1 year 2 months

Population: Per statistical considerations outlined in the trial Protocol and Statistical Analysis Plan, all patients were analyzed within pre-specified populations across the entire trial. There was no plan to analyze cohorts separately; therefore, results are presented in aggregate. The trial was a single-arm design, not a classic dose-escalation study, as the RP2D (12 µg/kg) had been established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort allowing one-way crossover to 12 µg/kg.

ArmMeasureValue (NUMBER)
Nanrilkefusp Alfa and CetuximabObjective Response Rate According to Response Evaluation Criteria In Solid Tumors Version 1.1 (RECIST 1.1)0 percentage of participants
Secondary

Best Overall Response According to iRECIST: Number of Participants With Complete Response

The best overall response according to iRECIST was defined as the best response from the start of study treatment until the first documented disease progression, death, or start of new anti-cancer therapy for target lesions and assessed by CT/MRI.

Time frame: Day 1 up to approximately 1 year 5 months

Population: Per statistical considerations outlined in the trial Protocol and Statistical Analysis Plan, all patients were analyzed within pre-specified populations across the entire trial. There was no plan to analyze cohorts separately; therefore, results are presented in aggregate. The trial was a single-arm design, not a classic dose-escalation study, as the RP2D (12 µg/kg) had been established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort allowing one-way crossover to 12 µg/kg.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nanrilkefusp Alfa and CetuximabBest Overall Response According to iRECIST: Number of Participants With Complete Response0 Participants
Secondary

Best Overall Response According to iRECIST: Number of Participants With Confirmed Progressive Disease

The best overall response according to iRECIST was defined as the best response from the start of study treatment until the first documented disease progression, death, or start of new anti-cancer therapy for target lesions and assessed by CT/MRI.

Time frame: Day 1 up to approximately 1 year 5 months

Population: Per statistical considerations outlined in the trial Protocol and Statistical Analysis Plan, all patients were analyzed within pre-specified populations across the entire trial. There was no plan to analyze cohorts separately; therefore, results are presented in aggregate. The trial was a single-arm design, not a classic dose-escalation study, as the RP2D (12 µg/kg) had been established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort allowing one-way crossover to 12 µg/kg.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nanrilkefusp Alfa and CetuximabBest Overall Response According to iRECIST: Number of Participants With Confirmed Progressive Disease2 Participants
Secondary

Best Overall Response According to iRECIST: Number of Participants With Partial Response

The best overall response according to iRECIST was defined as the best response from the start of study treatment until the first documented disease progression, death, or start of new anti-cancer therapy for target lesions and assessed by CT/MRI.

Time frame: Day 1 up to approximately 1 year 5 months

Population: Per statistical considerations outlined in the trial Protocol and Statistical Analysis Plan, all patients were analyzed within pre-specified populations across the entire trial. There was no plan to analyze cohorts separately; therefore, results are presented in aggregate. The trial was a single-arm design, not a classic dose-escalation study, as the RP2D (12 µg/kg) had been established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort allowing one-way crossover to 12 µg/kg.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nanrilkefusp Alfa and CetuximabBest Overall Response According to iRECIST: Number of Participants With Partial Response0 Participants
Secondary

Best Overall Response According to iRECIST: Number of Participants With Stable Disease

The best overall response according to iRECIST was defined as the best response from the start of study treatment until the first documented disease progression, death, or start of new anti-cancer therapy for target lesions and assessed by CT/MRI. Stable disease according to iRECIST had to last at least 6 weeks from the start of study treatment. If not, at least 1 follow-up scan was required to declare stable disease.

Time frame: Day 1 up to approximately 1 year 5 months

Population: Per statistical considerations outlined in the trial Protocol and Statistical Analysis Plan, all patients were analyzed within pre-specified populations across the entire trial. There was no plan to analyze cohorts separately; therefore, results are presented in aggregate. The trial was a single-arm design, not a classic dose-escalation study, as the RP2D (12 µg/kg) had been established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort allowing one-way crossover to 12 µg/kg.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nanrilkefusp Alfa and CetuximabBest Overall Response According to iRECIST: Number of Participants With Stable Disease6 Participants
Secondary

Best Overall Response According to iRECIST: Number of Participants With Unconfirmed Progressive Disease

The best overall response according to iRECIST was defined as the best response from the start of study treatment until the first documented disease progression, death, or start of new anti-cancer therapy for target lesions and assessed by CT/MRI.

Time frame: Day 1 up to approximately 1 year 5 months

Population: Per statistical considerations outlined in the trial Protocol and Statistical Analysis Plan, all patients were analyzed within pre-specified populations across the entire trial. There was no plan to analyze cohorts separately; therefore, results are presented in aggregate. The trial was a single-arm design, not a classic dose-escalation study, as the RP2D (12 µg/kg) had been established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort allowing one-way crossover to 12 µg/kg.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nanrilkefusp Alfa and CetuximabBest Overall Response According to iRECIST: Number of Participants With Unconfirmed Progressive Disease5 Participants
Secondary

Best Overall Response According to RECIST 1.1: Number of Participants With Complete Response

The best overall response according to RECIST 1.1 was defined as the best response from the start of study treatment until the first documented disease progression, death, or start of new anti-cancer therapy for target lesions and assessed by CT/MRI.

Time frame: Day 1 up to approximately 1 year 5 months

Population: Per statistical considerations outlined in the trial Protocol and Statistical Analysis Plan, all patients were analyzed within pre-specified populations across the entire trial. There was no plan to analyze cohorts separately; therefore, results are presented in aggregate. The trial was a single-arm design, not a classic dose-escalation study, as the RP2D (12 µg/kg) had been established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort allowing one-way crossover to 12 µg/kg.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nanrilkefusp Alfa and CetuximabBest Overall Response According to RECIST 1.1: Number of Participants With Complete Response0 Participants
Secondary

Best Overall Response According to RECIST 1.1: Number of Participants With Partial Response

The best overall response according to RECIST 1.1 was defined as the best response from the start of study treatment until the first documented disease progression, death, or start of new anti-cancer therapy for target lesions and assessed by CT/MRI.

Time frame: Day 1 up to approximately 1 year 5 months

Population: Per statistical considerations outlined in the trial Protocol and Statistical Analysis Plan, all patients were analyzed within pre-specified populations across the entire trial. There was no plan to analyze cohorts separately; therefore, results are presented in aggregate. The trial was a single-arm design, not a classic dose-escalation study, as the RP2D (12 µg/kg) had been established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort allowing one-way crossover to 12 µg/kg.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nanrilkefusp Alfa and CetuximabBest Overall Response According to RECIST 1.1: Number of Participants With Partial Response0 Participants
Secondary

Best Overall Response According to RECIST 1.1: Number of Participants With Progressive Disease

The best overall response according to RECIST 1.1 was defined as the best response from the start of study treatment until the first documented disease progression, death, or start of new anti-cancer therapy for target lesions and assessed by CT/MRI.

Time frame: Day 1 up to approximately 1 year 5 months

Population: Per statistical considerations outlined in the trial Protocol and Statistical Analysis Plan, all patients were analyzed within pre-specified populations across the entire trial. There was no plan to analyze cohorts separately; therefore, results are presented in aggregate. The trial was a single-arm design, not a classic dose-escalation study, as the RP2D (12 µg/kg) had been established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort allowing one-way crossover to 12 µg/kg.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nanrilkefusp Alfa and CetuximabBest Overall Response According to RECIST 1.1: Number of Participants With Progressive Disease7 Participants
Secondary

Best Overall Response According to RECIST 1.1: Number of Participants With Stable Disease

The best overall response according to RECIST 1.1 was defined as the best response from the start of study treatment until the first documented disease progression, death, or start of new anti-cancer therapy for target lesions and assessed by CT/MRI. Stable disease according to RECIST 1.1 had to last at least 6 weeks from the start of study treatment. If not, at least 1 follow-up scan was required to declare stable disease.

Time frame: Day 1 up to approximately 1 year 5 months

Population: Per statistical considerations outlined in the trial Protocol and Statistical Analysis Plan, all patients were analyzed within pre-specified populations across the entire trial. There was no plan to analyze cohorts separately; therefore, results are presented in aggregate. The trial was a single-arm design, not a classic dose-escalation study, as the RP2D (12 µg/kg) had been established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort allowing one-way crossover to 12 µg/kg.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nanrilkefusp Alfa and CetuximabBest Overall Response According to RECIST 1.1: Number of Participants With Stable Disease6 Participants
Secondary

Characterization of Area Under the Curve of Nanrilkefusp Alfa

At 9 µg/kg nanrilkefusp alfa on Day 1 of Cycle 1

Time frame: Day 1 of Cycle 1

Population: Per statistical considerations outlined in the trial Protocol and Statistical Analysis Plan, all patients were analyzed within pre-specified populations across the entire trial. There was no plan to analyze cohorts separately; therefore, results are presented in aggregate. The trial was a single-arm design, not a classic dose-escalation study, as the RP2D (12 µg/kg) had been established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort allowing one-way crossover to 12 µg/kg.

ArmMeasureValue (MEDIAN)
Nanrilkefusp Alfa and CetuximabCharacterization of Area Under the Curve of Nanrilkefusp Alfa37.1 h*ng/mL
Secondary

Characterization of Maximum Concentration of Nanrilkefusp Alfa on Day 1 of Cycle 1

At 9 µg/kg nanrilkefusp alfa

Time frame: Day 1 of Cycle 1

Population: Per statistical considerations outlined in the trial Protocol and Statistical Analysis Plan, all patients were analyzed within pre-specified populations across the entire trial. There was no plan to analyze cohorts separately; therefore, results are presented in aggregate. The trial was a single-arm design, not a classic dose-escalation study, as the RP2D (12 µg/kg) had been established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort allowing one-way crossover to 12 µg/kg.

ArmMeasureValue (MEDIAN)
Nanrilkefusp Alfa and CetuximabCharacterization of Maximum Concentration of Nanrilkefusp Alfa on Day 1 of Cycle 13.56 ng/mL
Secondary

Characterization of Pre-dose Concentration of Nanrilkefusp Alfa on Day 1 of Cycle 1

At 9 µg/kg nanrilkefusp alfa

Time frame: Day 1 of Cycle 1

Population: Per statistical considerations outlined in the trial Protocol and Statistical Analysis Plan, all patients were analyzed within pre-specified populations across the entire trial. There was no plan to analyze cohorts separately; therefore, results are presented in aggregate. The trial was a single-arm design, not a classic dose-escalation study, as the RP2D (12 µg/kg) had been established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort allowing one-way crossover to 12 µg/kg.

ArmMeasureValue (MEDIAN)
Nanrilkefusp Alfa and CetuximabCharacterization of Pre-dose Concentration of Nanrilkefusp Alfa on Day 1 of Cycle 10.404 ng/mL
Secondary

Characterization of Time to Maximum Concentration of Nanrilkefusp Alfa on Day 1 of Cycle 1

At 9 µg/kg nanrilkefusp alfa

Time frame: Day 1 of Cycle 1

Population: Per statistical considerations outlined in the trial Protocol and Statistical Analysis Plan, all patients were analyzed within pre-specified populations across the entire trial. There was no plan to analyze cohorts separately; therefore, results are presented in aggregate. The trial was a single-arm design, not a classic dose-escalation study, as the RP2D (12 µg/kg) had been established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort allowing one-way crossover to 12 µg/kg.

ArmMeasureValue (MEDIAN)
Nanrilkefusp Alfa and CetuximabCharacterization of Time to Maximum Concentration of Nanrilkefusp Alfa on Day 1 of Cycle 16.21 hours
Secondary

Clinical Benefit Rate According to iRECIST

Clinical benefit rate according to iRECIST was defined as the number of partial responses, complete responses, and stable disease according to iRECIST. Stable disease had to last at least 6 weeks from the start of study treatment. If not, at least 1 follow-up scan was required to declare stable disease. Participants with missing data were considered non-responders.

Time frame: Day 1 up to approximately 1 year 5 months

Population: Per statistical considerations outlined in the trial Protocol and Statistical Analysis Plan, all patients were analyzed within pre-specified populations across the entire trial. There was no plan to analyze cohorts separately; therefore, results are presented in aggregate. The trial was a single-arm design, not a classic dose-escalation study, as the RP2D (12 µg/kg) had been established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort allowing one-way crossover to 12 µg/kg.

ArmMeasureValue (NUMBER)
Nanrilkefusp Alfa and CetuximabClinical Benefit Rate According to iRECIST37.5 percentage of participants
Secondary

Clinical Benefit Rate According to RECIST 1.1

Clinical benefit rate according to RECIST 1.1 was defined as the number of partial responses, complete responses, and stable disease according to RECIST 1.1. Stable disease had to last at least 6 weeks from the start of study treatment. If not, at least 1 follow-up scan was required to declare stable disease. Participants with missing data were considered non-responders.

Time frame: Day 1 up to approximately 1 year 5 months

Population: Per statistical considerations outlined in the trial Protocol and Statistical Analysis Plan, all patients were analyzed within pre-specified populations across the entire trial. There was no plan to analyze cohorts separately; therefore, results are presented in aggregate. The trial was a single-arm design, not a classic dose-escalation study, as the RP2D (12 µg/kg) had been established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort allowing one-way crossover to 12 µg/kg.

ArmMeasureValue (NUMBER)
Nanrilkefusp Alfa and CetuximabClinical Benefit Rate According to RECIST 1.137.5 percentage of participants
Secondary

Duration of Response According to iRECIST

Duration of response according to iRECIST was defined as time to disease progression for participants with partial response or complete response according to iRECIST.

Time frame: Day 1 up to approximately 1 year 5 months

Population: As outlined in the trial Protocol and Statistical Analysis Plan, patients were analyzed within pre-specified populations across the trial. There was no plan to analyze cohorts separately; results are presented in aggregate. The trial was a single-arm design, not a dose-escalation study; the RP2D (12 µg/kg) was established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort with one-way crossover to 12 µg/kg.~No participant had a PR or CR per iRECIST; DoR data were not collected

Secondary

Duration of Response According to RECIST 1.1

Duration of response according to RECIST 1.1 was defined as time to disease progression for participants with partial response or complete response according to RECIST 1.1.

Time frame: Day 1 up to approximately 1 year 5 months

Population: As outlined in the trial Protocol and Statistical Analysis Plan, patients were analyzed within pre-specified populations across the trial. There was no plan to analyze cohorts separately; results are presented in aggregate. The trial was a single-arm design, not a dose-escalation study; the RP2D (12 µg/kg) was established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort with one-way crossover to 12 µg/kg.~No participant had a PR or CR per RECIST; DoR data were not collected.

Secondary

Incidence of Treatment-induced Anti-drug Antibodies Against Nanrilkefusp Alfa

At 9 µg/kg and 12 µg/kg nanrilkefusp alfa

Time frame: Day 1 until 30 (±2) days after the last dose of nanrilkefusp alfa, up to approximately 1 year 5 months

Population: Per statistical considerations outlined in the trial Protocol and Statistical Analysis Plan, all patients were analyzed within pre-specified populations across the entire trial. There was no plan to analyze cohorts separately; therefore, results are presented in aggregate. The trial was a single-arm design, not a classic dose-escalation study, as the RP2D (12 µg/kg) had been established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort allowing one-way crossover to 12 µg/kg.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nanrilkefusp Alfa and CetuximabIncidence of Treatment-induced Anti-drug Antibodies Against Nanrilkefusp Alfa5 Participants
Secondary

Number of Participants With Clinical Laboratory Test Abnormalities (Coagulation, Hematology, Clinical Chemistry and Urinalysis)

The following laboratory parameters will be assessed: Coagulation: prothrombin time, activated partial thromboplastin time, international normalized ratio, D-dimer, and fibrinogen Hematology: hemoglobin, glycated hemoglobin at screening, hematocrit, red blood cell count, reticulocytes, white blood cell count (with full differentiation), absolute lymphocyte count, and platelet count Clinical chemistry: Na, K, Cl, phosphate, Mg, Ca, albumin, total protein, ALT, AST, bilirubin (direct, total), alkaline phosphatase, lactate dehydrogenase, creatinine clearance calculated by the Cockcroft-Gault formula, creatinine, glucose (preferably fasting), urea or blood urea nitrogen, cholesterol, triglyceride, C-reactive protein, uric acid, amylase, and lipase Urinalysis: pH, glucose, protein, bilirubin, urobilinogen. Microscopic examination (mandated only if clinically indicated): red blood cell count, white blood cell count, epithelial cells, bacteria

Time frame: Day 1 up to approximately 1 year 5 months

Population: Per statistical considerations outlined in the trial Protocol and Statistical Analysis Plan, all patients were analyzed within pre-specified populations across the entire trial. There was no plan to analyze cohorts separately; therefore, results are presented in aggregate. The trial was a single-arm design, not a classic dose-escalation study, as the RP2D (12 µg/kg) had been established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort allowing one-way crossover to 12 µg/kg.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nanrilkefusp Alfa and CetuximabNumber of Participants With Clinical Laboratory Test Abnormalities (Coagulation, Hematology, Clinical Chemistry and Urinalysis)11 Participants
Secondary

Number of Participants With Dose-limiting Toxicities (DLTs)

The following adverse events as per NCI CTCAE version 5.0 were considered dose-limiting toxicities: * All grade 5 events not clearly related to disease progression or any other causes * Any grade 3 or higher non-hematologic toxicity regardless of duration; exceptions: * Grade 3 nausea, vomiting, or diarrhea that could be controlled within 72 hours * Grade 3 fatigue lasting less than 5 days * Grade 3 or higher correctable electrolyte abnormalities lasting less than 72 hours and not associated with clinical complications * Grade 3 or higher serum amylase or lipase not associated with clinical manifestations of pancreatitis * Grade 3 AST or ALT increase or grade 3 blood bilirubin increase lasting 5 days or less * Hy's law cases * Hematologic DLTs: * Grade 4 decreased neutrophil count or decreased platelet count lasting more than 7 days * Febrile neutropenia * Grade 3 or higher decreased platelet count with bleeding

Time frame: Through Cycle 1 (21 days)

Population: Per statistical considerations outlined in the trial Protocol and Statistical Analysis Plan, all patients were analyzed within pre-specified populations across the entire trial. There was no plan to analyze cohorts separately; therefore, results are presented in aggregate. The trial was a single-arm design, not a classic dose-escalation study, as the RP2D (12 µg/kg) had been established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort allowing one-way crossover to 12 µg/kg.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nanrilkefusp Alfa and CetuximabNumber of Participants With Dose-limiting Toxicities (DLTs)0 Participants
Secondary

Number of Participants With Electrocardiography Abnormalities

Standard 12-lead electrocardiography was evaluated locally.

Time frame: Day 1 up to approximately 1 year 5 months

Population: Per statistical considerations outlined in the trial Protocol and Statistical Analysis Plan, all patients were analyzed within pre-specified populations across the entire trial. There was no plan to analyze cohorts separately; therefore, results are presented in aggregate. The trial was a single-arm design, not a classic dose-escalation study, as the RP2D (12 µg/kg) had been established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort allowing one-way crossover to 12 µg/kg.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nanrilkefusp Alfa and CetuximabNumber of Participants With Electrocardiography Abnormalities1 Participants
Secondary

Number of Participants With Treatment-emergent Adverse Events

A treatment-emergent adverse event is defined as an adverse event that started or worsened at or after the start of study treatment.

Time frame: Day 1 up to approximately 1 year 5 months

Population: Per statistical considerations outlined in the trial Protocol and Statistical Analysis Plan, all patients were analyzed within pre-specified populations across the entire trial. There was no plan to analyze cohorts separately; therefore, results are presented in aggregate. The trial was a single-arm design, not a classic dose-escalation study, as the RP2D (12 µg/kg) had been established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort allowing one-way crossover to 12 µg/kg.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nanrilkefusp Alfa and CetuximabNumber of Participants With Treatment-emergent Adverse Events16 Participants
Secondary

Number of Participants With Vital Signs Abnormalities

The following vital signs parameters will be assessed: Blood pressure (systolic and diastolic, after ≥5 minutes of rest), body temperature, and heart rate

Time frame: Day 1 up to approximately 1 year 5 months

Population: Per statistical considerations outlined in the trial Protocol and Statistical Analysis Plan, all patients were analyzed within pre-specified populations across the entire trial. There was no plan to analyze cohorts separately; therefore, results are presented in aggregate. The trial was a single-arm design, not a classic dose-escalation study, as the RP2D (12 µg/kg) had been established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort allowing one-way crossover to 12 µg/kg.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Nanrilkefusp Alfa and CetuximabNumber of Participants With Vital Signs Abnormalities11 Participants
Secondary

Objective Response Rate According to RECIST for Immune-based Therapeutics (iRECIST)

Objective response rate according to iRECIST was defined as the proportion of participants with complete response according to iRECIST or partial response according to iRECIST for target lesions and assessed by CT/MRI. Participants with missing data were considered non-responders.

Time frame: Day 1 up to approximately 1 year 5 months

Population: Per statistical considerations outlined in the trial Protocol and Statistical Analysis Plan, all patients were analyzed within pre-specified populations across the entire trial. There was no plan to analyze cohorts separately; therefore, results are presented in aggregate. The trial was a single-arm design, not a classic dose-escalation study, as the RP2D (12 µg/kg) had been established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort allowing one-way crossover to 12 µg/kg.

ArmMeasureValue (NUMBER)
Nanrilkefusp Alfa and CetuximabObjective Response Rate According to RECIST for Immune-based Therapeutics (iRECIST)0 percentage of participants
Secondary

Progression-free Survival According to iRECIST

Progression-free survival according to iRECIST was defined as the time from the first day of study treatment to the first date of radiological disease progression according to iRECIST or death.

Time frame: Day 1 up to approximately 1 year 5 months

Population: Per statistical considerations outlined in the trial Protocol and Statistical Analysis Plan, all patients were analyzed within pre-specified populations across the entire trial. There was no plan to analyze cohorts separately; therefore, results are presented in aggregate. The trial was a single-arm design, not a classic dose-escalation study, as the RP2D (12 µg/kg) had been established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort allowing one-way crossover to 12 µg/kg.

ArmMeasureValue (MEDIAN)
Nanrilkefusp Alfa and CetuximabProgression-free Survival According to iRECIST2.7 months
Secondary

Progression-free Survival According to RECIST 1.1

Progression-free survival according to RECIST 1.1 was defined as the time from the first day of study treatment to the first date of radiological disease progression according to RECIST 1.1 or death.

Time frame: Day 1 up to approximately 1 year 5 months

Population: Per statistical considerations outlined in the trial Protocol and Statistical Analysis Plan, all patients were analyzed within pre-specified populations across the entire trial. There was no plan to analyze cohorts separately; therefore, results are presented in aggregate. The trial was a single-arm design, not a classic dose-escalation study, as the RP2D (12 µg/kg) had been established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort allowing one-way crossover to 12 µg/kg.

ArmMeasureValue (MEDIAN)
Nanrilkefusp Alfa and CetuximabProgression-free Survival According to RECIST 1.12.7 months
Secondary

Time to Progression According to iRECIST

Time to progression according to iRECIST was defined as the time from the first day of study treatment to the first date of radiological disease progression according to iRECIST.

Time frame: Day 1 up to approximately 1 year 5 months

Population: Per statistical considerations outlined in the trial Protocol and Statistical Analysis Plan, all patients were analyzed within pre-specified populations across the entire trial. There was no plan to analyze cohorts separately; therefore, results are presented in aggregate. The trial was a single-arm design, not a classic dose-escalation study, as the RP2D (12 µg/kg) had been established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort allowing one-way crossover to 12 µg/kg.

ArmMeasureValue (MEDIAN)
Nanrilkefusp Alfa and CetuximabTime to Progression According to iRECIST2.8 months
Secondary

Time to Progression According to RECIST 1.1

Time to progression according to RECIST 1.1 was defined as the time from the first day of study treatment to the first date of radiological disease progression according to RECIST 1.1.

Time frame: Day 1 up to approximately 1 year 5 months

Population: Per statistical considerations outlined in the trial Protocol and Statistical Analysis Plan, all patients were analyzed within pre-specified populations across the entire trial. There was no plan to analyze cohorts separately; therefore, results are presented in aggregate. The trial was a single-arm design, not a classic dose-escalation study, as the RP2D (12 µg/kg) had been established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort allowing one-way crossover to 12 µg/kg.

ArmMeasureValue (MEDIAN)
Nanrilkefusp Alfa and CetuximabTime to Progression According to RECIST 1.12.8 months
Secondary

Time to Response According to iRECIST

Time to response according to iRECIST was defined as the time from the first day of study treatment to the first date of partial response or complete response according to iRECIST. Participants with missing data were censored at the last assessment date, date of death, or date of eligibility (for incomplete or missing baseline tumor assessments), whichever occurred last.

Time frame: Day 1 up to approximately 1 year 5 months

Population: Per statistical considerations outlined in the trial Protocol and Statistical Analysis Plan, all patients were analyzed within pre-specified populations across the entire trial. There was no plan to analyze cohorts separately; therefore, results are presented in aggregate. The trial was a single-arm design, not a classic dose-escalation study, as the RP2D (12 µg/kg) had been established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort allowing one-way crossover to 12 µg/kg.

ArmMeasureValue (MEDIAN)
Nanrilkefusp Alfa and CetuximabTime to Response According to iRECIST0 months
Secondary

Time to Response According to RECIST 1.1

Time to response according to RECIST 1.1 was defined as the time from the first day of study treatment to the first date of partial response or complete response according to RECIST 1.1. Participants with missing data were censored at the last assessment date, date of death, or date of eligibility (for incomplete or missing baseline tumor assessments), whichever occurred last.

Time frame: Day 1 up to approximately 1 year 5 months

Population: Per statistical considerations outlined in the trial Protocol and Statistical Analysis Plan, all patients were analyzed within pre-specified populations across the entire trial. There was no plan to analyze cohorts separately; therefore, results are presented in aggregate. The trial was a single-arm design, not a classic dose-escalation study, as the RP2D (12 µg/kg) had been established in a prior trial (NCT04234113). The 9 µg/kg dose was a safety cohort allowing one-way crossover to 12 µg/kg.

ArmMeasureValue (MEDIAN)
Nanrilkefusp Alfa and CetuximabTime to Response According to RECIST 1.10 months

Source: ClinicalTrials.gov · Data processed: Feb 8, 2026