Study Stopped
Due to lack of efficacy shown at the time of the interim analysis.
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
3 other identifiers
interventional
115
4 countries
12
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
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for phase_1
Started Jun 2019
Longer than P75 for phase_1
12 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
Study Start
First participant enrolled
June 13, 2019
CompletedFirst Submitted
Initial submission to the registry
November 14, 2019
CompletedFirst Posted
Study publicly available on registry
January 21, 2020
CompletedPrimary Completion
Last participant's last visit for primary outcome
August 31, 2024
CompletedStudy Completion
Last participant's last visit for all outcomes
November 27, 2024
CompletedResults Posted
Study results publicly available
March 27, 2026
CompletedMarch 27, 2026
March 1, 2026
5.2 years
November 14, 2019
August 15, 2025
March 6, 2026
Conditions
Keywords
Outcome Measures
Primary Outcomes (6)
Number of Participants With Dose-limiting Toxicities (DLTs)
* 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
Through Cycle 1 (21 days)
Number of Participants With Adverse Events (AEs)
Nanrilkefusp alfa related only
Day 1 up to approximately 2 years and 2.5 months
Number of Participants With Serious AEs (SAEs)
Nanrilkefusp alfa related only
Day 1 up to approximately 2 years and 2.5 months
Number of Participants With AEs Leading to Premature Discontinuation of Nanrilkefusp Alfa
Nanrilkefusp alfa related only
Day 1 up to approximately 2 years and 2.5 months
Number of Participants Who Died
Nanrilkefusp alfa-related deaths only
Day 1 up to approximately 2 years and 2.5 months
Number of Participants With Nanrilkefusp Alfa-related Clinical Laboratory Test Abnormalities (Coagulation; Hematology; Clinical Chemistry; Urinalysis; Thyroid and Cardiac Function)
The 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
Day 1 up to approximately 2 years and 2.5 months
Secondary Outcomes (12)
Nanrilkefusp Alfa Concentration Profile, Cycle 1 Day 1
Cycle 1 Day 1
Overall Activation Levels of Ki-67+ CD8+ T Cells on Day 6 of Cycle 1
Cycle 1 Day 6
Overall Activation Levels of Ki-67+ CD8+ CD45RO+ CD45RA- T Cells on Day 6 of Cycle 1
Cycle 1 Day 6
Overall Activation Levels of Ki-67+ CD4+ T Cells on Day 6 of Cycle 1
Cycle 1 Day 6
Overall Activation Levels of Ki-67+ NK Cells on Day 6 of Cycle 1
Cycle 1 Day 6
- +7 more secondary outcomes
Study Arms (17)
Part A (nanrilkefusp alfa monotherapy), nanrilkefusp alfa 0.25 μg/kg
EXPERIMENTALNanrilkefusp alfa was administered on day 1 (±1 day), day 2, day 8, and day 9 of the 21-day treatment cycle as a once-daily dose.
Part A (nanrilkefusp alfa monotherapy), nanrilkefusp alfa 0.75 μg/kg
EXPERIMENTALNanrilkefusp alfa was administered on day 1 (±1 day), day 2, day 8, and day 9 of the 21-day treatment cycle as a once-daily dose.
Part A (nanrilkefusp alfa monotherapy), nanrilkefusp alfa 1.5 μg/kg
EXPERIMENTALNanrilkefusp alfa was administered on day 1 (±1 day), day 2, day 8, and day 9 of the 21-day treatment cycle as a once-daily dose.
Part A (nanrilkefusp alfa monotherapy), nanrilkefusp alfa 3 μg/kg
EXPERIMENTALNanrilkefusp alfa was administered on day 1 (±1 day), day 2, day 8, and day 9 of the 21-day treatment cycle as a once-daily dose.
Part A (nanrilkefusp alfa monotherapy), nanrilkefusp alfa 6 μg/kg
EXPERIMENTALNanrilkefusp alfa was administered on day 1 (±1 day), day 2, day 8, and day 9 of the 21-day treatment cycle as a once-daily dose.
Part A (nanrilkefusp alfa monotherapy), nanrilkefusp alfa 9 μg/kg
EXPERIMENTALNanrilkefusp alfa was administered on day 1 (±1 day), day 2, day 8, and day 9 of the 21-day treatment cycle as a once-daily dose.
Part A (nanrilkefusp alfa monotherapy), nanrilkefusp alfa 12 μg/kg
EXPERIMENTALNanrilkefusp alfa was administered on day 1 (±1 day), day 2, day 8, and day 9 of the 21-day treatment cycle as a once-daily dose.
Part A (nanrilkefusp alfa monotherapy), nanrilkefusp alfa 15 μg/kg
EXPERIMENTALNanrilkefusp alfa was administered on day 1 (±1 day), day 2, day 8, and day 9 of the 21-day treatment cycle as a once-daily dose.
Part A1 (nanrilkefusp alfa divided dosing, monotherapy), nanrilkefusp alfa 9 μg/kg
EXPERIMENTALNanrilkefusp alfa was administered on day 1 (±1 day), day 2, day 8, and day 9 of the 21-day treatment cycle twice a day as 2 divided doses (50%:50%) with the second dose on each treatment day administered 8 hours (±15 min) after the first dose.
Part A1 (nanrilkefusp alfa divided dosing, monotherapy), nanrilkefusp alfa 12 μg/kg
EXPERIMENTALNanrilkefusp alfa was administered on day 1 (±1 day), day 2, day 8, and day 9 of the 21-day treatment cycle twice a day as 2 divided doses (50%:50%) with the second dose on each treatment day administered 8 hours (±15 min) after the first dose.
Part B (nanrilkefusp alfa combined with pembrolizumab), nanrilkefusp alfa 1.5 μg/kg
EXPERIMENTALNanrilkefusp alfa was administered on day 1 (±1 day), day 2, day 8, and day 9 of the 21-day treatment cycle as a once-daily dose. Pembrolizumab 200 mg was administered intravenously on day 1 of the 21-day treatment cycle.
Part B (nanrilkefusp alfa combined with pembrolizumab), nanrilkefusp alfa 3 μg/kg
EXPERIMENTALNanrilkefusp alfa was administered on day 1 (±1 day), day 2, day 8, and day 9 of the 21-day treatment cycle as a once-daily dose. Pembrolizumab 200 mg was administered intravenously on day 1 of the 21-day treatment cycle.
Part B (nanrilkefusp alfa combined with pembrolizumab), nanrilkefusp alfa 6 μg/kg
EXPERIMENTALNanrilkefusp alfa was administered on day 1 (±1 day), day 2, day 8, and day 9 of the 21-day treatment cycle as a once-daily dose. Pembrolizumab 200 mg was administered intravenously on day 1 of the 21-day treatment cycle.
Part B (nanrilkefusp alfa combined with pembrolizumab), nanrilkefusp alfa 9 μg/kg
EXPERIMENTALNanrilkefusp alfa was administered on day 1 (±1 day), day 2, day 8, and day 9 of the 21-day treatment cycle as a once-daily dose. Pembrolizumab 200 mg was administered intravenously on day 1 of the 21-day treatment cycle.
Part B (nanrilkefusp alfa combined with pembrolizumab), nanrilkefusp alfa 12 μg/kg
EXPERIMENTALNanrilkefusp alfa was administered on day 1 (±1 day), day 2, day 8, and day 9 of the 21-day treatment cycle as a once-daily dose. Pembrolizumab 200 mg was administered intravenously on day 1 of the 21-day treatment cycle.
Part B1 (nanrilkefusp alfa divided dosing, combined with pembrolizumab), nanrilkefusp alfa 9 μg/kg
EXPERIMENTALNanrilkefusp alfa was administered on day 1 (±1 day), day 2, day 8, and day 9 of the 21-day treatment cycle twice a day as 2 divided doses (50%:50%) with the second dose on each treatment day administered 8 hours (±15 min) after the first dose. Pembrolizumab 200 mg was administered intravenously on day 1 of the 21-day treatment cycle.
Part D (nanrilkefusp alfa monotherapy, expansion at the RP2D), nanrilkefusp alfa 12 μg/kg
EXPERIMENTALNanrilkefusp alfa was administered on day 1 (±1 day), day 2, day 8, and day 9 of the 21-day treatment cycle as a once-daily dose.
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
A humanized IgG4 monoclonal antibody with high specificity of binding to the PD-1 receptor
Eligibility Criteria
You may qualify if:
- 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.
- 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
You may not qualify if:
- 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
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- SOTIO Biotech AGlead
- SOTIO Biotech a.s.collaborator
Study Sites (12)
Yale Cancer Center
New Haven, Connecticut, 06520, United States
University of Pittsburgh
Pittsburgh, Pennsylvania, 15216, United States
MD Anderson Cancer Center
Houston, Texas, 77030, United States
Masarykův Onkologický Ústav Brno Klinika komplexní onkologické péče
Brno, Czechia, 65653, Czechia
Centre Léon Bérard
Lyon, France, 69379, France
Institut Gustave Roussy
Paris, France, 94805, France
Institut Claudius Regaud
Toulouse, France, 31059, France
Hôpitaux Universitaires de Marseille Timone
Marseille, 13005, France
Hopital Saint Louis
Paris, 75010, France
Institut de Cancerologie de L'Ouest
Saint-Herblain, 44805, France
Vall d'Hebron Institute of Oncology
Barcelona, Spain, 08035, Spain
University Hospital Sanchinarro
Madrid, 28050, Spain
MeSH Terms
Conditions
Interventions
Condition Hierarchy (Ancestors)
Results Point of Contact
- Title
- Richard Kapsa
- Organization
- SOTIO Biotech a.s.
Study Officials
- PRINCIPAL INVESTIGATOR
Stephane Champiat, Dr.
Institute Gustave Roussy, Villejuif, France
Publication Agreements
- PI is Sponsor Employee
- No
- Restriction Type
- OTHER
- Restrictive Agreement
- Yes
Study Design
- Study Type
- interventional
- Phase
- phase 1
- Allocation
- NON RANDOMIZED
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- SEQUENTIAL
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
November 14, 2019
First Posted
January 21, 2020
Study Start
June 13, 2019
Primary Completion
August 31, 2024
Study Completion
November 27, 2024
Last Updated
March 27, 2026
Results First Posted
March 27, 2026
Record last verified: 2026-03
Data Sharing
- IPD Sharing
- Will not share