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Study of Nanrilkefusp Alfa Alone and With Pembrolizumab in Adult Patients With Advanced/Metastatic Solid Tumors

A Multicenter Open-label Phase 1/1b Study to Evaluate the Safety and Preliminary Efficacy of SO-C101 as Monotherapy and in Combination With Pembrolizumab in Patients With Selected Advanced/Metastatic Solid Tumors

Status
Terminated
Phases
Phase 1
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04234113
Enrollment
115
Registered
2020-01-21
Start date
2019-06-13
Completion date
2024-11-27
Last updated
2026-03-27

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

Conditions

Anal Cancer, Biliary Tract Cancer, Bladder Cancer, Cervical Cancer, Gastric Cancer, Head and Neck Squamous Cell Carcinoma, Hepatocellular Carcinoma, Melanoma, Merkel Cell Carcinoma, Mesothelioma, Microsatellite Instability High, Non Small Cell Lung Cancer, Ovarian Cancer, Renal Cell Carcinoma, Skin Squamous Cell Carcinoma, Small-cell Lung Cancer, Thymic Cancer, Thyroid Cancer, Triple Negative Breast Cancer

Keywords

Thyroid Cancer, Renal Cell Carcinoma, Non Small Cell Lung Cancer, Small-cell Lung Cancer, Bladder Cancer, Melanoma, Merkel Cell Carcinoma, Skin Squamous Cell Carcinoma, Microsatellite Instability High, Triple Negative Breast Cancer, Mesothelioma, Thymic Cancer, Cervical Cancer, Biliary Tract Cancer, Hepatocellular Carcinoma, Ovarian Cancer, Gastric Cancer, Head and Neck Squamous Cell Carcinoma, Anal Cancer

Brief summary

A multicenter open-label phase 1/1b study to evaluate the safety and preliminary efficacy of nanrilkefusp alfa as monotherapy and in combination with pembrolizumab in patients with selected advanced/metastatic solid tumors

Detailed description

This study will assess the safety and tolerability of nanrilkefusp alfa administered as monotherapy and in combination with an anti-PD-1 antibody (pembrolizumab) in patients with selected relapsed/refractory advanced/metastatic solid tumors (renal cell carcinoma, non-small cell lung cancer, small-cell lung cancer, bladder cancer, melanoma, Merkel-cell carcinoma, skin squamous-cell carcinoma, microsatellite instability high solid tumors, triple-negative breast cancer, mesothelioma, thyroid cancer, thymic cancer, cervical cancer, biliary tract cancer, hepatocellular carcinoma, ovarian cancer, gastric cancer, head and neck squamous-cell carcinoma, and anal cancer).

Interventions

A fusion protein which consists of the N-terminal sushi domain of human IL-15 receptor α covalently coupled via a linker of 20 amino acids to human IL-15

DRUGPembrolizumab

A humanized IgG4 monoclonal antibody with high specificity of binding to the PD-1 receptor

Sponsors

SOTIO Biotech AG
Lead SponsorINDUSTRY
SOTIO Biotech a.s.
CollaboratorINDUSTRY

Study design

Allocation
NON_RANDOMIZED
Intervention model
SEQUENTIAL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Patients with selected histologically or cytologically confirmed advanced and/or metastatic solid tumors who are refractory to or intolerant of existing therapies known to provide clinical benefit for their condition. * ECOG performance score 0-1. Patients with ECOG performance score 2 to be discussed with the sponsor's medical monitor to be agreed for inclusion. * Estimated life expectancy of ≥3 months * Washout periods: 4 weeks for chemotherapy, 4 weeks or 5 half-lives (whichever shorter) for biologic agents including immuno-oncology therapy and 4 weeks from major surgeries, definitive radiotherapy and 2 weeks after palliative radiotherapy * At least one measurable lesion per iRECIST in a non-irradiated port. If in a previously irradiated port, must have demonstrated progression since best response to radiation therapy. * Have fully recovered from previous treatment to grade ≤1 toxicity (excluding alopecia) or have stable grade 2 neuropathy * Adequate organ system function * Negative serum pregnancy test, if woman of child-bearing potential (non-childbearing is defined as greater than one year postmenopausal or surgically sterilized). * Accessible tumor tissue available for fresh biopsy

Exclusion criteria

* Untreated central nervous system metastases and/or leptomeningeal carcinomatosis * Known additional malignancy that is progressing and/or requires active treatment * Prior exposure to drugs that are agonists of IL-2- or IL-15-like but not limited to rhIL-15 (NCI), ALT-803 (ALTOR), NKTR-214 (Nektar) * History of and current interstitial lung disease or fibrosis and pneumonitis; patients with clinically significant or oxygen requiring chronic obstructive pulmonary disease or any chronic inflammatory disease (sarcoidosis etc.) * Has received a live vaccine within 30 days of planned start of study therapy * Absolute white blood cell count ≤2.0 ×10e9/L * Absolute neutrophil count ≤1.0 ×10e9/L * Platelet count ≤100×10e9/L * Pregnant or breastfeeding women * Any active autoimmune disease or a documented history of autoimmune disease, poorly controlled asthma, or history of syndrome that required systemic steroids (except the allowed doses) or immunosuppressive medications, except for patients with vitiligo or resolved childhood asthma/atopy * Specific co-morbidities * Parts B and B1: * Is hypersensitive to any of the ingredients of pembrolizumab drug product (KEYTRUDA®) * History of solid organ transplantation or hematopoietic stem cell transplantation

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Dose-limiting Toxicities (DLTs)Through Cycle 1 (21 days)* Grade (gr) 5 not related to disease progression or other causes * Gr ≥3 non-hematologic toxicity; exceptions: gr 3 nausea, vomiting or diarrhea controlled in 72 hours; gr 3 fatigue \<5 days; gr ≥3 correctable electrolyte abnormalities \<72 hours and no clinical complications; gr ≥3 amylase or lipase without clinical pancreatitis * Hy's law cases * Gr 3 AST or ALT or gr 3 bilirubinemia \>5 days * Hematologic DLTs: gr 4 neutropenia or thrombocytopenia \>7 days, febrile neutropenia, gr ≥3 thrombocytopenia with bleeding * Gr 4 immune-related AEs * Gr 3 or 4 non-infectious pneumonitis * Gr 3 immune-related AEs, excluding colitis, hepatitis, and pneumonitis, not downgrading to gr ≤2 in 3 days despite maximal supportive care including systemic corticosteroids or to gr 1 or baseline in 14 days * Gr 2 pneumonitis not downgrading to gr 1 in 3 days * Gr 3 colitis * Part B and Part B1: Recurrent grade 2 pneumonitis
Number of Participants With Adverse Events (AEs)Day 1 up to approximately 2 years and 2.5 monthsNanrilkefusp alfa related only
Number of Participants With Serious AEs (SAEs)Day 1 up to approximately 2 years and 2.5 monthsNanrilkefusp alfa related only
Number of Participants With AEs Leading to Premature Discontinuation of Nanrilkefusp AlfaDay 1 up to approximately 2 years and 2.5 monthsNanrilkefusp alfa related only
Number of Participants Who DiedDay 1 up to approximately 2 years and 2.5 monthsNanrilkefusp alfa-related deaths only
Number of Participants With Nanrilkefusp Alfa-related Clinical Laboratory Test Abnormalities (Coagulation; Hematology; Clinical Chemistry; Urinalysis; Thyroid and Cardiac Function)Day 1 up to approximately 2 years and 2.5 monthsThe following laboratory parameters were assessed: * Coagulation: Prothrombin time, activated partial thromboplastin time, international normalized ratio, D-dimer, fibrinogen * Hematology: Hemoglobin, hematocrit, red blood cell count, reticulocytes, white blood cell count (with full differentiation), absolute lymphocyte count, platelet count * Clinical chemistry: Na, K, Cl, phosphate, Mg, Ca, albumin, total protein, ALT, AST, bilirubin (direct, total), alkaline phosphatase, lactate dehydrogenase, creatinine clearance, creatinine, glucose (preferably fasting), urea or blood urea nitrogen, cholesterol, triglyceride, CRP, uric acid, amylase, lipase * Urinalysis: pH, glucose, protein, bilirubin, urobilinogen. Microscopic examination: red blood cell count, white blood cell count, epithelial cells, bacteria * Thyroid function: TSH, free triiodothyronine (T3), free thyroxine (T4) * Cardiac function: Cardiac troponin T

Secondary

MeasureTime frameDescription
Nanrilkefusp Alfa Concentration Profile, Cycle 1 Day 1Cycle 1 Day 1This outcome measure presents the overall nanrilkefusp apfa Cmax profile over Cycle 1 Day 1.
Overall Activation Levels of Ki-67+ CD8+ T Cells on Day 6 of Cycle 1Cycle 1 Day 6The eCRF Hematology data (specifically white blood cell count (WBC)) for each timepoint will be used to derive the Cell counts in 10\^9/L. Once merged with the pharmacodynamic data by subject and timepoint, the following will be used as derivation: • Ki-67+ Cells of CD8+ Cells (10\^9/L) = Ki-67+ Cells of CD8+ Cells (%CD45+) x 0.01 x WBC" Absolute count of Ki-67+ Cells was calculated as percentage of those cells out of CD45+ multiplied by WBC and 0.01.
Overall Activation Levels of Ki-67+ CD8+ CD45RO+ CD45RA- T Cells on Day 6 of Cycle 1Cycle 1 Day 6The eCRF Hematology data (specifically white blood cell count (WBC)) for each timepoint will be used to derive the Cell counts in 10\^9/L. Once merged with the pharmacodynamic data by subject and timepoint, the following will be used as derivation: * Ki-67+ Cells of CD8+ Cells (10\^9/L) = Ki-67+ Cells of CD8+ Cells (%CD45+) x 0.01 x WBC * CD45RO+ CD45RA- (Memory) Cells of CD8+ Cells (10\^9/L) = CD45RO+ CD45RA- (Memory) Cells of CD8+ Cells (%CD45+) x 0.01 x WBC Absolute count of Ki-67+ Cells was calculated as percentage of those cells out of CD45+ multiplied by WBC and 0.01. Absolute count of CD45RO+ CD45RA- (Memory) Cells was calculated as percentage of those cells out of CD45+ multiplied by WBC and 0.01.
Overall Activation Levels of Ki-67+ CD4+ T Cells on Day 6 of Cycle 1Cycle 1 Day 6The eCRF Hematology data (specifically white blood cell count (WBC)) for each timepoint will be used to derive the Cell counts in 10\^9/L. Once merged with the pharmacodynamic data by subject and timepoint, the following will be used as derivation: • Ki-67+ Cells of CD4+ Cells (10\^9/L) = Ki-67+ Cells of CD4+ Cells (%CD45+) x 0.01 x WBC Absolute count of Ki-67+ Cells was calculated as percentage of those cells out of CD45+ multiplied by WBC and 0.01.
Overall Activation Levels of Ki-67+ NK Cells on Day 6 of Cycle 1Cycle 1 Day 6The eCRF Hematology data (specifically white blood cell count (WBC)) for each timepoint will be used to derive the Cell counts in 10\^9/L. Once merged with the pharmacodynamic data by subject and timepoint, the following will be used as derivation: • Ki-67+ Cells of CD3-CD56+ (NK) Cells (10\^9/L) = Ki-67+ Cells of CD3-CD56+ (NK) Cells (%CD45+) x 0.01 x WBC Absolute count of Ki-67+ Cells was calculated as percentage of those cells out of CD45+ multiplied by WBC and 0.01.
Overall Activation Levels of Ki-67+ NKT Cells on Day 6 of Cycle 1Cycle 1 Day 6The eCRF Hematology data (specifically white blood cell count (WBC)) for each timepoint will be used to derive the Cell counts in 10\^9/L. Once merged with the pharmacodynamic data by subject and timepoint, the following will be used as derivation: • CD3+CD56+ (NKT) Cells of CD45+ Live Cells (10\^9/L) = CD3+CD56+ (NKT) Cells of CD45+ Live Cells (%) x 0.01 x WBC Absolute count of Ki-67+ Cells was calculated as percentage of those cells out of Live Cells multiplied by WBC and 0.01.
Overall Activation Levels of Ki-67+ Treg Cells on Day 6 of Cycle 1Cycle 1 Day 6The eCRF Hematology data (specifically white blood cell count (WBC)) for each timepoint will be used to derive the Cell counts in 10\^9/L. Once merged with the pharmacodynamic data by subject and timepoint, the following will be used as derivation: • Ki-67+ Cells of Treg Cells (10\^9/L) = Ki-67+ Treg Cells (%CD45+) x 0.01 x WBC" Absolute count of Ki-67+ Cells was calculated as percentage of those cells out of CD45+ multiplied by WBC and 0.01.
Objective Response RateDay 1 up to approximately 5 years 5 monthsBased on investigator review of radiographic images according to Response Evaluation Criteria In Solid Tumors for immune-based therapeutics (iRECIST). Objective response rate according to iRECIST was defined as the percentage of participants with complete response according to iRECIST or partial response according to iRECIST for target lesions and assessed by CT/MRI.
Duration of ResponseDay 1 up to approximately 5 years 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 for target lesions and assessed by CT/MRI.
Clinical Benefit RateDay 1 up to approximately 5 years 5 monthsBased on investigator review of radiographic images according to iRECIST. Clinical benefit rate according to iRECIST was defined as the percentage of patients with partial responses, complete responses, and stable disease according to iRECIST for target lesions and assessed by CT/MRI.
Progression-free SurvivalDay 1 up to approximately 5 years 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.
Number of Participants With Anti-drug Antibodies at the End of TreatmentDay 1 until 30 (±2) days after the last dose of nanrilkefusp alfa, up to approximately 5 years 5 months

Countries

Czechia, France, Spain, United States

Contacts

PRINCIPAL_INVESTIGATORStephane Champiat, Dr.

Institute Gustave Roussy, Villejuif, France

Baseline characteristics

Characteristic
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
1 Participants
Age, Categorical
Between 18 and 65 years
4 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
4 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
70 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
2 Participants
Race (NIH/OMB)
White
3 Participants
Region of Enrollment
Czechia
8 participants
Region of Enrollment
France
3 participants
Region of Enrollment
Spain
2 participants
Region of Enrollment
United States
0 participants
Sex: Female, Male
Female
4 Participants
Sex: Female, Male
Male
37 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
EG006
affected / at risk
EG007
affected / at risk
EG008
affected / at risk
EG009
affected / at risk
EG010
affected / at risk
EG011
affected / at risk
EG012
affected / at risk
EG013
affected / at risk
EG014
affected / at risk
EG015
affected / at risk
EG016
affected / at risk
deaths
Total, all-cause mortality
3 / 32 / 32 / 32 / 42 / 32 / 42 / 63 / 42 / 51 / 30 / 30 / 34 / 70 / 31 / 50 / 419 / 52
other
Total, other adverse events
3 / 33 / 33 / 34 / 43 / 34 / 46 / 64 / 45 / 53 / 33 / 33 / 37 / 73 / 35 / 54 / 452 / 52
serious
Total, serious adverse events
2 / 32 / 31 / 33 / 40 / 32 / 41 / 62 / 43 / 51 / 31 / 32 / 36 / 72 / 32 / 52 / 426 / 52

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Mar 28, 2026