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A Study of SOT101 in Combination With Pembrolizumab to Evaluate the Efficacy and Safety in Patients With Selected Advanced Solid Tumors

A Phase 2, Open-label, Single-arm, Multicenter Study of SOT101 in Combination With Pembrolizumab to Evaluate the Efficacy and Safety in Patients With Selected Advanced/Refractory Solid Tumors

Status
Terminated
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05256381
Enrollment
166
Registered
2022-02-25
Start date
2022-06-21
Completion date
2024-11-29
Last updated
2025-11-17

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

Conditions

Castration-resistant Prostate Cancer, Colorectal Cancer, Cutaneous Squamous Cell Carcinoma, Hepatocellular Carcinoma, Non-Small Cell Lung Cancer, Ovarian Cancer

Keywords

SOT101, SO-C101, Pembrolizumab, Non-Small Cell Lung Cancer, Colorectal Cancer, Cutaneous Squamous Cell Carcinoma, Advanced Hepatocellular Carcinoma, Metastatic Castration-resistant Prostate Cancer, Ovarian Cancer, KEYNOTE-D13, AURELIO-04, Nanrilkefusp Alfa

Brief summary

The primary objective of the study is to estimate the antitumor efficacy of nanrilkefusp alfa in combination with pembrolizumab in selected tumors.

Interventions

Subcutaneous (SC) injection.

DRUGPembrolizumab

Intravenous (IV) infusion via peripheral or central venous line.

Sponsors

Merck Sharp & Dohme LLC
CollaboratorINDUSTRY
SOTIO Biotech AG
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

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

Inclusion criteria

* Participants with the following histologically or cytologically confirmed solid tumor indications and line of treatment: 1. Non-small cell lung cancer (NSCLC). 2. Colorectal cancer. 3. Cutaneous squamous cell carcinoma (cSCC). 4. Advanced hepatocellular carcinoma (not applicable in France). 5. mCRPC. 6. Ovarian cancer. * Have measurable disease per RECIST 1.1. mCRPC participants with no measurable disease and only widespread bone disease must have a CTC count of ≥5 cells per 7.5 mL of blood. * Availability of tumor tissue from a fresh biopsy at screening unless the biopsy cannot be obtained due to safety reasons or non-accessibility of the tumor site. If it is not possible to obtain a fresh biopsy, every effort should be taken to retrieve an archival biopsy. Archived, fixed tumor tissue may only be collected if taken preferentially after completion of the most recent systemic tumor therapy and within 12 months prior to the first dose of study treatment. * Eastern Cooperative Oncology Group (ECOG) score 0-1. * Have recovered from all AEs (except alopecia) due to previous therapies to grade ≤1 (excluding alopecia) or have stable grade 2 neuropathy. * Have adequate organ function as defined below: 1. Hematology: 1. Absolute neutrophil count ≥1500/μL. 2. Platelets ≥100 000/μL. 3. Hemoglobin ≥9.0 g/dL . 2. Renal function: Creatinine clearance as measured by glomerular filtration rate ≥30 mL/min using Cockcroft-Gault equation. 3. Hepatic function: Alanine transaminase (ALT)/aspartate transaminase (AST) ≤2.5× upper limit of normal (ULN) and total bilirubin ≤1.5×ULN or direct bilirubin ≤ ULN in participants without liver metastasis. In participants with liver metastasis, ALT/AST ≤5×ULN is allowed but total bilirubin must be ≤2×ULN. 4. Prothrombin time and activated partial thromboplastin time ≤1.5×ULN. * Participants must not have active hepatitis B or hepatitis C infection. * Adequate contraception must be applied in all women of childbearing potential (WOCBP) and in male participants.

Exclusion criteria

* Has received prior therapy with an anti-programmed cell death protein 1 (anti-PD-1), anti-programmed cell death ligand 1 (anti-PD-L1), or anti-programmed cell death ligand 2 (anti-PD-L2) agent or with an agent directed to another stimulatory or co-inhibitory T-cell receptor and was discontinued from that treatment due to a grade ≥3 AE. * Prior exposure to agonists of interleukin (IL)-2 or IL-15. * Prior systemic anti-cancer therapies, including investigational agents: 1. Less than 4 weeks for systemic chemotherapy and immuno-oncology therapies; and for tyrosine kinase inhibitors 4 weeks or 5 half-lives (whichever is shorter). 2. Less than 4 weeks from major surgeries and not recovered adequately. * Has received prior radiotherapy within 2 weeks of the start of study interventions or have had a history of radiation pneumonitis. * NSCLC indication only: Received radiation therapy to the lung \>30 Gy within 6 months. * Has received a live or live-attenuated vaccine within 30 days. * Clinically significant cardiac abnormalities including prior history of any of the following: 1. Cardiomyopathy, with left ventricular ejection fraction ≤ 50%. 2. Congestive heart failure of New York Heart Association grade ≥2. 3. History of clinically significant artery or coronary heart disease. 4. Prolongation of QTcF \>450 msec . 5. Clinically significant cardiac arrythmia that cannot be controlled with adequate medication. * Uncontrolled hypertension defined as systolic blood pressure \>160 mmHg, diastolic blood pressure \>110 mmHg. * Prior allogeneic hematopoietic stem cell transplantation within the last 5 years. * Prior allogeneic tissue/solid organ transplant. * Has a diagnosis of immunodeficiency or is receiving chronic systemic steroid therapy (exceeding 10 mg daily of prednisone equivalent) or any other form of immunosuppressive therapy. * History of or serology positive for human immunodeficiency virus (HIV). * Has a known additional malignancy that is progressing or has required active treatment within the past 5 years, except for basal cell carcinoma of the skin or carcinoma in situ that have undergone potentially curative therapy are not excluded. * Has known active central nervous system metastases and/or carcinomatous meningitis, unless stable. * Had severe hypersensitivity (grade ≥3) to pembrolizumab and/or any of its excipients. * Has an active autoimmune disease that has required systemic treatment in the past 2 years. * History of (non-infectious) pneumonitis/interstitial lung disease that required steroids or current pneumonitis/interstitial lung disease. * Has an active infection requiring systemic therapy. * Has any condition that might confound the results of the study or interfere with the participant's participation for the full duration of the study.

Design outcomes

Primary

MeasureTime frame
Percentage of Patients With Objective Response Rate According to Response Evaluation Criteria In Solid Tumors Version 1.1 (RECIST 1.1)Day 1 up to approximately 2 years and 2 months

Secondary

MeasureTime frame
Number of Patients With a Treatment-emergent Adverse EventDay 1 up to approximately 2 years and 2 months
Percentage of Patients With Objective Response Rate According to RECIST for Immune-based Therapeutics (iRECIST)Day 1 up to approximately 2 years and 2 months
Number of Patients With Best Overall Response According to RECIST 1.1: Complete ResponseDay 1 up to approximately 2 years and 2 months
Number of Patients With Best Overall Response According to RECIST 1.1: Partial ResponseDay 1 up to approximately 2 years and 2 months
Number of Patients With Best Overall Response According to RECIST 1.1: Stable DiseaseDay 1 up to approximately 2 years and 2 months
Number of Patients With Best Overall Response According to RECIST 1.1: Progressive DiseaseDay 1 up to approximately 2 years and 2 months
Number of Patients With Best Overall Response According to iRECIST: Complete ResponseDay 1 up to approximately 2 years and 2 months
Number of Patients With Best Overall Response According to iRECIST: Partial ResponseDay 1 up to approximately 2 years and 2 months
Number of Patients With Best Overall Response According to iRECIST: Stable DiseaseDay 1 up to approximately 2 years and 2 months
Number of Patients With Best Overall Response According to iRECIST: Unconfirmed Progressive DiseaseDay 1 up to approximately 2 years and 2 months
Number of Patients With Best Overall Response According to iRECIST: Confirmed Progressive DiseaseDay 1 up to approximately 2 years and 2 months
Duration of Response According to RECIST 1.1Day 1 up to approximately 2 years and 2 months
Duration of Response According to iRECISTDay 1 up to approximately 2 years and 2 months
Percentage of Patients With Clinical Benefit Rate According to RECIST 1.1Day 1 up to approximately 2 years and 2 months
Number of Patients With an Adverse Event of Special InterestDay 1 up to approximately 2 years and 2 months
Progression-free Survival According to RECIST 1.1Day 1 up to approximately 2 years and 2 months
Progression-free Survival According to iRECISTDay 1 up to approximately 2 years and 2 months
Time to Response According to RECIST 1.1Day 1 up to approximately 2 years and 2 months
Time to Response According to iRECISTDay 1 up to approximately 2 years and 2 months
Duration of Response According to Prostate Cancer Clinical Trials Working Group 3 Modified RECIST 1.1Day 1 up to approximately 2 years and 2 months
Percentage of Patients With Clinical Benefit Rate According to Prostate Cancer Clinical Trials Working Group 3 Modified RECIST 1.1Day 1 up to approximately 2 years and 2 months
Progression-free Survival According to Prostate Cancer Clinical Trials Working Group 3 Modified RECIST 1.1Day 1 up to approximately 2 years and 2 months
Percentage of Patients With Circulating Tumor Cell Count Conversion as Assessed According to Prostate Cancer Clinical Trials Working Group 3 Modified RECIST 1.1Day 1 up to approximately 2 years
Percentage of Patients With Confirmed Prostate-specific Antigen Decline of ≥50% as Assessed According to Prostate Cancer Clinical Trials Working Group 3 Modified RECIST 1.1Day 1 up to approximately 2 years
Time to Confirmed Prostate-specific Antigen Progression as Assessed According to Prostate Cancer Clinical Trials Working Group 3 Modified RECIST 1.1Day 1 up to approximately 2 years
Nanrilkefusp Alfa Concentration Profile, Cycle 1 Day 1, 30 (+/-5) Minutes After Nanrilkefusp Alfa AdministrationCycle 1 Day 1, 30 (+/-5) minutes after nanrilkefusp alfa administration
Nanrilkefusp Alfa Concentration Profile, Cycle 1 Day 1, 2 Hours (+/-15 Minutes) After Nanrilkefusp Alfa AdministrationCycle 1 Day 1, 2 hours (+/-15 minutes) after nanrilkefusp alfa administration
Number of Patients With Anti-drug Antibodies, Cycle 4 Day 1Cycle 4 Day 1, approximately 9 weeks
Percentage of Patients With Clinical Benefit Rate According to iRECISTDay 1 up to approximately 2 years and 2 months

Countries

Belgium, Czechia, France, Georgia, Hungary, Italy, Poland, Spain, United States

Participant flow

Participants by arm

ArmCount
Non-small Cell Lung Cancer
Advanced and/or metastatic non-small cell lung cancer with disease progression on or after an immune checkpoint inhibitor-containing regimen and a platinum-containing regimen, with no epidermal growth factor receptor or anaplastic lymphoma kinase genomic tumor aberrations, and who were not amenable to curative treatment
40
Colorectal Cancer
Microsatellite instability-high or mismatch repair deficient colorectal cancer that was unresectable or metastatic
8
Cutaneous Squamous Cell Carcinoma
Recurrent or metastatic cutaneous squamous cell carcinoma that was not curable by surgery or radiation and in second line if refractory or relapsed after a checkpoint inhibitor-containing regimen and radiotherapy was not feasible
12
Hepatocellular Carcinoma
Advanced hepatocellular carcinoma after recurrence or failure of an immune checkpoint inhibitor (not applicable in France)
12
Metastatic Castration-resistant Prostate Cancer
Treatment-refractory metastatic castration-resistant prostate cancer after recurrence or failure of docetaxel and prior treatment with abiraterone, enzalutamide, or any other androgen receptor-targeted agent
54
Ovarian Cancer
Advanced recurrent ovarian cancer after recurrence or failure on the last platinum-based therapy within 6 months
39
Total165

Withdrawals & dropouts

PeriodReasonFG000FG001FG002FG003FG004FG005
Overall StudyDeath173452421
Overall StudyLost to Follow-up100010
Overall StudyOther, not specified000021
Overall StudyPhysician Decision001020
Overall StudyStudy terminated by sponsor185551811
Overall StudyWithdrawal by Subject402286

Baseline characteristics

CharacteristicCutaneous Squamous Cell CarcinomaNon-small Cell Lung CancerColorectal CancerHepatocellular CarcinomaMetastatic Castration-resistant Prostate CancerOvarian CancerTotal
Age, Categorical
<=18 years
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Age, Categorical
>=65 years
11 Participants17 Participants3 Participants4 Participants40 Participants18 Participants93 Participants
Age, Categorical
Between 18 and 65 years
1 Participants23 Participants5 Participants8 Participants14 Participants21 Participants72 Participants
Age, Continuous75.5 years
STANDARD_DEVIATION 10.95
63.5 years
STANDARD_DEVIATION 10.43
59.0 years
STANDARD_DEVIATION 18.34
63.5 years
STANDARD_DEVIATION 11.02
68.0 years
STANDARD_DEVIATION 6.57
64.0 years
STANDARD_DEVIATION 11.59
66.0 years
STANDARD_DEVIATION 10.9
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants2 Participants1 Participants0 Participants1 Participants0 Participants4 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
9 Participants30 Participants6 Participants12 Participants48 Participants35 Participants140 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
3 Participants8 Participants1 Participants0 Participants5 Participants4 Participants21 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
0 Participants0 Participants0 Participants0 Participants1 Participants0 Participants1 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
3 Participants8 Participants1 Participants0 Participants4 Participants3 Participants19 Participants
Race (NIH/OMB)
White
9 Participants32 Participants7 Participants12 Participants49 Participants36 Participants145 Participants
Region of Enrollment
Belgium
0 participants6 participants0 participants4 participants1 participants8 participants19 participants
Region of Enrollment
Czechia
0 participants2 participants1 participants0 participants2 participants3 participants8 participants
Region of Enrollment
France
3 participants8 participants1 participants0 participants4 participants5 participants21 participants
Region of Enrollment
Georgia
6 participants13 participants4 participants8 participants19 participants6 participants56 participants
Region of Enrollment
Hungary
0 participants0 participants0 participants0 participants2 participants0 participants2 participants
Region of Enrollment
Italy
2 participants4 participants0 participants0 participants2 participants0 participants8 participants
Region of Enrollment
Poland
0 participants0 participants1 participants0 participants1 participants0 participants2 participants
Region of Enrollment
Spain
1 participants6 participants1 participants0 participants21 participants16 participants45 participants
Region of Enrollment
United States
0 participants1 participants0 participants0 participants2 participants1 participants4 participants
Sex: Female, Male
Female
2 Participants12 Participants3 Participants1 Participants0 Participants39 Participants57 Participants
Sex: Female, Male
Male
10 Participants28 Participants5 Participants11 Participants54 Participants0 Participants108 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
deaths
Total, all-cause mortality
17 / 403 / 84 / 125 / 1224 / 5521 / 39
other
Total, other adverse events
40 / 408 / 812 / 1212 / 1254 / 5439 / 39
serious
Total, serious adverse events
23 / 403 / 83 / 123 / 1228 / 5428 / 39

Outcome results

Primary

Percentage of Patients With Objective Response Rate According to Response Evaluation Criteria In Solid Tumors Version 1.1 (RECIST 1.1)

Time frame: Day 1 up to approximately 2 years and 2 months

Population: All patients exposed to the combination therapy for at least one treatment cycle. This is defined as patients with 4 doses of SOT101 and 1 dose of pembrolizumab in Cycle 1, or patients exposed to both SOT101 and pembrolizumab in Cycle 1 who started Cycle 2. Only patients with measurable disease at baseline were included.

ArmMeasureValue (NUMBER)
Non-small Cell Lung CancerPercentage of Patients With Objective Response Rate According to Response Evaluation Criteria In Solid Tumors Version 1.1 (RECIST 1.1)5.1 percentage of participants
Colorectal CancerPercentage of Patients With Objective Response Rate According to Response Evaluation Criteria In Solid Tumors Version 1.1 (RECIST 1.1)33.3 percentage of participants
Cutaneous Squamous Cell CarcinomaPercentage of Patients With Objective Response Rate According to Response Evaluation Criteria In Solid Tumors Version 1.1 (RECIST 1.1)27.3 percentage of participants
Hepatocellular CarcinomaPercentage of Patients With Objective Response Rate According to Response Evaluation Criteria In Solid Tumors Version 1.1 (RECIST 1.1)0 percentage of participants
Metastatic Castration-resistant Prostate CancerPercentage of Patients With Objective Response Rate According to Response Evaluation Criteria In Solid Tumors Version 1.1 (RECIST 1.1)10.0 percentage of participants
Ovarian CancerPercentage of Patients With Objective Response Rate According to Response Evaluation Criteria In Solid Tumors Version 1.1 (RECIST 1.1)11.4 percentage of participants
Secondary

Duration of Response According to iRECIST

Time frame: Day 1 up to approximately 2 years and 2 months

ArmMeasureValue (MEDIAN)
Non-small Cell Lung CancerDuration of Response According to iRECIST3.6 months
Colorectal CancerDuration of Response According to iRECISTNA months
Cutaneous Squamous Cell CarcinomaDuration of Response According to iRECISTNA months
Hepatocellular CarcinomaDuration of Response According to iRECISTNA months
Metastatic Castration-resistant Prostate CancerDuration of Response According to iRECIST13.9 months
Ovarian CancerDuration of Response According to iRECIST3.0 months
Secondary

Duration of Response According to Prostate Cancer Clinical Trials Working Group 3 Modified RECIST 1.1

Time frame: Day 1 up to approximately 2 years and 2 months

ArmMeasureValue (MEDIAN)
Non-small Cell Lung CancerDuration of Response According to Prostate Cancer Clinical Trials Working Group 3 Modified RECIST 1.1NA months
Secondary

Duration of Response According to RECIST 1.1

Time frame: Day 1 up to approximately 2 years and 2 months

ArmMeasureValue (MEDIAN)
Non-small Cell Lung CancerDuration of Response According to RECIST 1.13.6 months
Colorectal CancerDuration of Response According to RECIST 1.1NA months
Cutaneous Squamous Cell CarcinomaDuration of Response According to RECIST 1.1NA months
Hepatocellular CarcinomaDuration of Response According to RECIST 1.1NA months
Metastatic Castration-resistant Prostate CancerDuration of Response According to RECIST 1.1NA months
Ovarian CancerDuration of Response According to RECIST 1.13.0 months
Secondary

Nanrilkefusp Alfa Concentration Profile, Cycle 1 Day 1, 2 Hours (+/-15 Minutes) After Nanrilkefusp Alfa Administration

Time frame: Cycle 1 Day 1, 2 hours (+/-15 minutes) after nanrilkefusp alfa administration

ArmMeasureValue (MEDIAN)
Non-small Cell Lung CancerNanrilkefusp Alfa Concentration Profile, Cycle 1 Day 1, 2 Hours (+/-15 Minutes) After Nanrilkefusp Alfa Administration3.6800 ng/mL
Colorectal CancerNanrilkefusp Alfa Concentration Profile, Cycle 1 Day 1, 2 Hours (+/-15 Minutes) After Nanrilkefusp Alfa Administration3.6700 ng/mL
Cutaneous Squamous Cell CarcinomaNanrilkefusp Alfa Concentration Profile, Cycle 1 Day 1, 2 Hours (+/-15 Minutes) After Nanrilkefusp Alfa Administration3.4250 ng/mL
Hepatocellular CarcinomaNanrilkefusp Alfa Concentration Profile, Cycle 1 Day 1, 2 Hours (+/-15 Minutes) After Nanrilkefusp Alfa Administration2.5600 ng/mL
Metastatic Castration-resistant Prostate CancerNanrilkefusp Alfa Concentration Profile, Cycle 1 Day 1, 2 Hours (+/-15 Minutes) After Nanrilkefusp Alfa Administration3.4500 ng/mL
Ovarian CancerNanrilkefusp Alfa Concentration Profile, Cycle 1 Day 1, 2 Hours (+/-15 Minutes) After Nanrilkefusp Alfa Administration3.1300 ng/mL
Secondary

Nanrilkefusp Alfa Concentration Profile, Cycle 1 Day 1, 30 (+/-5) Minutes After Nanrilkefusp Alfa Administration

Time frame: Cycle 1 Day 1, 30 (+/-5) minutes after nanrilkefusp alfa administration

ArmMeasureValue (MEDIAN)
Non-small Cell Lung CancerNanrilkefusp Alfa Concentration Profile, Cycle 1 Day 1, 30 (+/-5) Minutes After Nanrilkefusp Alfa Administration1.0900 ng/mL
Colorectal CancerNanrilkefusp Alfa Concentration Profile, Cycle 1 Day 1, 30 (+/-5) Minutes After Nanrilkefusp Alfa Administration0.5890 ng/mL
Cutaneous Squamous Cell CarcinomaNanrilkefusp Alfa Concentration Profile, Cycle 1 Day 1, 30 (+/-5) Minutes After Nanrilkefusp Alfa Administration0.7200 ng/mL
Hepatocellular CarcinomaNanrilkefusp Alfa Concentration Profile, Cycle 1 Day 1, 30 (+/-5) Minutes After Nanrilkefusp Alfa Administration0.9470 ng/mL
Metastatic Castration-resistant Prostate CancerNanrilkefusp Alfa Concentration Profile, Cycle 1 Day 1, 30 (+/-5) Minutes After Nanrilkefusp Alfa Administration0 ng/mL
Ovarian CancerNanrilkefusp Alfa Concentration Profile, Cycle 1 Day 1, 30 (+/-5) Minutes After Nanrilkefusp Alfa Administration0.9020 ng/mL
Secondary

Number of Patients With an Adverse Event of Special Interest

Time frame: Day 1 up to approximately 2 years and 2 months

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Non-small Cell Lung CancerNumber of Patients With an Adverse Event of Special Interest0 Participants
Colorectal CancerNumber of Patients With an Adverse Event of Special Interest1 Participants
Cutaneous Squamous Cell CarcinomaNumber of Patients With an Adverse Event of Special Interest0 Participants
Hepatocellular CarcinomaNumber of Patients With an Adverse Event of Special Interest0 Participants
Metastatic Castration-resistant Prostate CancerNumber of Patients With an Adverse Event of Special Interest0 Participants
Ovarian CancerNumber of Patients With an Adverse Event of Special Interest0 Participants
Secondary

Number of Patients With Anti-drug Antibodies, Cycle 4 Day 1

Time frame: Cycle 4 Day 1, approximately 9 weeks

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Non-small Cell Lung CancerNumber of Patients With Anti-drug Antibodies, Cycle 4 Day 15 Participants
Colorectal CancerNumber of Patients With Anti-drug Antibodies, Cycle 4 Day 13 Participants
Cutaneous Squamous Cell CarcinomaNumber of Patients With Anti-drug Antibodies, Cycle 4 Day 13 Participants
Hepatocellular CarcinomaNumber of Patients With Anti-drug Antibodies, Cycle 4 Day 10 Participants
Metastatic Castration-resistant Prostate CancerNumber of Patients With Anti-drug Antibodies, Cycle 4 Day 14 Participants
Ovarian CancerNumber of Patients With Anti-drug Antibodies, Cycle 4 Day 15 Participants
Secondary

Number of Patients With a Treatment-emergent Adverse Event

Time frame: Day 1 up to approximately 2 years and 2 months

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Non-small Cell Lung CancerNumber of Patients With a Treatment-emergent Adverse Event40 Participants
Colorectal CancerNumber of Patients With a Treatment-emergent Adverse Event8 Participants
Cutaneous Squamous Cell CarcinomaNumber of Patients With a Treatment-emergent Adverse Event12 Participants
Hepatocellular CarcinomaNumber of Patients With a Treatment-emergent Adverse Event12 Participants
Metastatic Castration-resistant Prostate CancerNumber of Patients With a Treatment-emergent Adverse Event54 Participants
Ovarian CancerNumber of Patients With a Treatment-emergent Adverse Event39 Participants
Secondary

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

Time frame: Day 1 up to approximately 2 years and 2 months

Population: All patients exposed to the combination therapy for at least one treatment cycle. This is defined as patients with 4 doses of SOT101 and 1 dose of pembrolizumab in Cycle 1, or patients exposed to both SOT101 and pembrolizumab in Cycle 1 who started Cycle 2. Only patients with measurable disease at baseline were included.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Non-small Cell Lung CancerNumber of Patients With Best Overall Response According to iRECIST: Complete Response0 Participants
Colorectal CancerNumber of Patients With Best Overall Response According to iRECIST: Complete Response0 Participants
Cutaneous Squamous Cell CarcinomaNumber of Patients With Best Overall Response According to iRECIST: Complete Response1 Participants
Hepatocellular CarcinomaNumber of Patients With Best Overall Response According to iRECIST: Complete Response0 Participants
Metastatic Castration-resistant Prostate CancerNumber of Patients With Best Overall Response According to iRECIST: Complete Response0 Participants
Ovarian CancerNumber of Patients With Best Overall Response According to iRECIST: Complete Response0 Participants
Secondary

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

Time frame: Day 1 up to approximately 2 years and 2 months

Population: All patients exposed to the combination therapy for at least one treatment cycle. This is defined as patients with 4 doses of SOT101 and 1 dose of pembrolizumab in Cycle 1, or patients exposed to both SOT101 and pembrolizumab in Cycle 1 who started Cycle 2. Only patients with measurable disease at baseline were included.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Non-small Cell Lung CancerNumber of Patients With Best Overall Response According to iRECIST: Confirmed Progressive Disease3 Participants
Colorectal CancerNumber of Patients With Best Overall Response According to iRECIST: Confirmed Progressive Disease1 Participants
Cutaneous Squamous Cell CarcinomaNumber of Patients With Best Overall Response According to iRECIST: Confirmed Progressive Disease2 Participants
Hepatocellular CarcinomaNumber of Patients With Best Overall Response According to iRECIST: Confirmed Progressive Disease1 Participants
Metastatic Castration-resistant Prostate CancerNumber of Patients With Best Overall Response According to iRECIST: Confirmed Progressive Disease2 Participants
Ovarian CancerNumber of Patients With Best Overall Response According to iRECIST: Confirmed Progressive Disease8 Participants
Secondary

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

Time frame: Day 1 up to approximately 2 years and 2 months

Population: All patients exposed to the combination therapy for at least one treatment cycle. This is defined as patients with 4 doses of SOT101 and 1 dose of pembrolizumab in Cycle 1, or patients exposed to both SOT101 and pembrolizumab in Cycle 1 who started Cycle 2. Only patients with measurable disease at baseline were included.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Non-small Cell Lung CancerNumber of Patients With Best Overall Response According to iRECIST: Partial Response3 Participants
Colorectal CancerNumber of Patients With Best Overall Response According to iRECIST: Partial Response2 Participants
Cutaneous Squamous Cell CarcinomaNumber of Patients With Best Overall Response According to iRECIST: Partial Response3 Participants
Hepatocellular CarcinomaNumber of Patients With Best Overall Response According to iRECIST: Partial Response0 Participants
Metastatic Castration-resistant Prostate CancerNumber of Patients With Best Overall Response According to iRECIST: Partial Response5 Participants
Ovarian CancerNumber of Patients With Best Overall Response According to iRECIST: Partial Response4 Participants
Secondary

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

Time frame: Day 1 up to approximately 2 years and 2 months

Population: All patients exposed to the combination therapy for at least one treatment cycle. This is defined as patients with 4 doses of SOT101 and 1 dose of pembrolizumab in Cycle 1, or patients exposed to both SOT101 and pembrolizumab in Cycle 1 who started Cycle 2. Only patients with measurable disease at baseline were included.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Non-small Cell Lung CancerNumber of Patients With Best Overall Response According to iRECIST: Stable Disease15 Participants
Colorectal CancerNumber of Patients With Best Overall Response According to iRECIST: Stable Disease3 Participants
Cutaneous Squamous Cell CarcinomaNumber of Patients With Best Overall Response According to iRECIST: Stable Disease2 Participants
Hepatocellular CarcinomaNumber of Patients With Best Overall Response According to iRECIST: Stable Disease5 Participants
Metastatic Castration-resistant Prostate CancerNumber of Patients With Best Overall Response According to iRECIST: Stable Disease15 Participants
Ovarian CancerNumber of Patients With Best Overall Response According to iRECIST: Stable Disease4 Participants
Secondary

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

Time frame: Day 1 up to approximately 2 years and 2 months

Population: All patients exposed to the combination therapy for at least one treatment cycle. This is defined as patients with 4 doses of SOT101 and 1 dose of pembrolizumab in Cycle 1, or patients exposed to both SOT101 and pembrolizumab in Cycle 1 who started Cycle 2. Only patients with measurable disease at baseline were included.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Non-small Cell Lung CancerNumber of Patients With Best Overall Response According to iRECIST: Unconfirmed Progressive Disease13 Participants
Colorectal CancerNumber of Patients With Best Overall Response According to iRECIST: Unconfirmed Progressive Disease0 Participants
Cutaneous Squamous Cell CarcinomaNumber of Patients With Best Overall Response According to iRECIST: Unconfirmed Progressive Disease3 Participants
Hepatocellular CarcinomaNumber of Patients With Best Overall Response According to iRECIST: Unconfirmed Progressive Disease4 Participants
Metastatic Castration-resistant Prostate CancerNumber of Patients With Best Overall Response According to iRECIST: Unconfirmed Progressive Disease14 Participants
Ovarian CancerNumber of Patients With Best Overall Response According to iRECIST: Unconfirmed Progressive Disease15 Participants
Secondary

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

Time frame: Day 1 up to approximately 2 years and 2 months

Population: All patients exposed to the combination therapy for at least one treatment cycle. This is defined as patients with 4 doses of SOT101 and 1 dose of pembrolizumab in Cycle 1, or patients exposed to both SOT101 and pembrolizumab in Cycle 1 who started Cycle 2. Only patients with measurable disease at baseline were included.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Non-small Cell Lung CancerNumber of Patients With Best Overall Response According to RECIST 1.1: Complete Response0 Participants
Colorectal CancerNumber of Patients With Best Overall Response According to RECIST 1.1: Complete Response0 Participants
Cutaneous Squamous Cell CarcinomaNumber of Patients With Best Overall Response According to RECIST 1.1: Complete Response1 Participants
Hepatocellular CarcinomaNumber of Patients With Best Overall Response According to RECIST 1.1: Complete Response0 Participants
Metastatic Castration-resistant Prostate CancerNumber of Patients With Best Overall Response According to RECIST 1.1: Complete Response0 Participants
Ovarian CancerNumber of Patients With Best Overall Response According to RECIST 1.1: Complete Response0 Participants
Secondary

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

Time frame: Day 1 up to approximately 2 years and 2 months

Population: All patients exposed to the combination therapy for at least one treatment cycle. This is defined as patients with 4 doses of SOT101 and 1 dose of pembrolizumab in Cycle 1, or patients exposed to both SOT101 and pembrolizumab in Cycle 1 who started Cycle 2. Only patients with measurable disease at baseline were included.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Non-small Cell Lung CancerNumber of Patients With Best Overall Response According to RECIST 1.1: Partial Response2 Participants
Colorectal CancerNumber of Patients With Best Overall Response According to RECIST 1.1: Partial Response2 Participants
Cutaneous Squamous Cell CarcinomaNumber of Patients With Best Overall Response According to RECIST 1.1: Partial Response2 Participants
Hepatocellular CarcinomaNumber of Patients With Best Overall Response According to RECIST 1.1: Partial Response0 Participants
Metastatic Castration-resistant Prostate CancerNumber of Patients With Best Overall Response According to RECIST 1.1: Partial Response4 Participants
Ovarian CancerNumber of Patients With Best Overall Response According to RECIST 1.1: Partial Response4 Participants
Secondary

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

Time frame: Day 1 up to approximately 2 years and 2 months

Population: All patients exposed to the combination therapy for at least one treatment cycle. This is defined as patients with 4 doses of SOT101 and 1 dose of pembrolizumab in Cycle 1, or patients exposed to both SOT101 and pembrolizumab in Cycle 1 who started Cycle 2. Only patients with measurable disease at baseline were included.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Non-small Cell Lung CancerNumber of Patients With Best Overall Response According to RECIST 1.1: Progressive Disease20 Participants
Colorectal CancerNumber of Patients With Best Overall Response According to RECIST 1.1: Progressive Disease1 Participants
Cutaneous Squamous Cell CarcinomaNumber of Patients With Best Overall Response According to RECIST 1.1: Progressive Disease6 Participants
Hepatocellular CarcinomaNumber of Patients With Best Overall Response According to RECIST 1.1: Progressive Disease5 Participants
Metastatic Castration-resistant Prostate CancerNumber of Patients With Best Overall Response According to RECIST 1.1: Progressive Disease18 Participants
Ovarian CancerNumber of Patients With Best Overall Response According to RECIST 1.1: Progressive Disease23 Participants
Secondary

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

Time frame: Day 1 up to approximately 2 years and 2 months

Population: All patients exposed to the combination therapy for at least one treatment cycle. This is defined as patients with 4 doses of SOT101 and 1 dose of pembrolizumab in Cycle 1, or patients exposed to both SOT101 and pembrolizumab in Cycle 1 who started Cycle 2. Only patients with measurable disease at baseline were included.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Non-small Cell Lung CancerNumber of Patients With Best Overall Response According to RECIST 1.1: Stable Disease12 Participants
Colorectal CancerNumber of Patients With Best Overall Response According to RECIST 1.1: Stable Disease3 Participants
Cutaneous Squamous Cell CarcinomaNumber of Patients With Best Overall Response According to RECIST 1.1: Stable Disease2 Participants
Hepatocellular CarcinomaNumber of Patients With Best Overall Response According to RECIST 1.1: Stable Disease5 Participants
Metastatic Castration-resistant Prostate CancerNumber of Patients With Best Overall Response According to RECIST 1.1: Stable Disease14 Participants
Ovarian CancerNumber of Patients With Best Overall Response According to RECIST 1.1: Stable Disease4 Participants
Secondary

Percentage of Patients With Circulating Tumor Cell Count Conversion as Assessed According to Prostate Cancer Clinical Trials Working Group 3 Modified RECIST 1.1

Time frame: Day 1 up to approximately 2 years

ArmMeasureValue (NUMBER)
Non-small Cell Lung CancerPercentage of Patients With Circulating Tumor Cell Count Conversion as Assessed According to Prostate Cancer Clinical Trials Working Group 3 Modified RECIST 1.13.8 percentage of participants
Secondary

Percentage of Patients With Clinical Benefit Rate According to iRECIST

Time frame: Day 1 up to approximately 2 years and 2 months

ArmMeasureValue (NUMBER)
Non-small Cell Lung CancerPercentage of Patients With Clinical Benefit Rate According to iRECIST46.2 percentage of participants
Colorectal CancerPercentage of Patients With Clinical Benefit Rate According to iRECIST83.3 percentage of participants
Cutaneous Squamous Cell CarcinomaPercentage of Patients With Clinical Benefit Rate According to iRECIST54.5 percentage of participants
Hepatocellular CarcinomaPercentage of Patients With Clinical Benefit Rate According to iRECIST45.5 percentage of participants
Metastatic Castration-resistant Prostate CancerPercentage of Patients With Clinical Benefit Rate According to iRECIST50.0 percentage of participants
Ovarian CancerPercentage of Patients With Clinical Benefit Rate According to iRECIST22.9 percentage of participants
Secondary

Percentage of Patients With Clinical Benefit Rate According to Prostate Cancer Clinical Trials Working Group 3 Modified RECIST 1.1

Time frame: Day 1 up to approximately 2 years and 2 months

ArmMeasureValue (NUMBER)
Non-small Cell Lung CancerPercentage of Patients With Clinical Benefit Rate According to Prostate Cancer Clinical Trials Working Group 3 Modified RECIST 1.145.0 percentage of participants
Secondary

Percentage of Patients With Clinical Benefit Rate According to RECIST 1.1

Time frame: Day 1 up to approximately 2 years and 2 months

ArmMeasureValue (NUMBER)
Non-small Cell Lung CancerPercentage of Patients With Clinical Benefit Rate According to RECIST 1.135.9 percentage of participants
Colorectal CancerPercentage of Patients With Clinical Benefit Rate According to RECIST 1.183.3 percentage of participants
Cutaneous Squamous Cell CarcinomaPercentage of Patients With Clinical Benefit Rate According to RECIST 1.145.5 percentage of participants
Hepatocellular CarcinomaPercentage of Patients With Clinical Benefit Rate According to RECIST 1.145.5 percentage of participants
Metastatic Castration-resistant Prostate CancerPercentage of Patients With Clinical Benefit Rate According to RECIST 1.145.0 percentage of participants
Ovarian CancerPercentage of Patients With Clinical Benefit Rate According to RECIST 1.122.9 percentage of participants
Secondary

Percentage of Patients With Confirmed Prostate-specific Antigen Decline of ≥50% as Assessed According to Prostate Cancer Clinical Trials Working Group 3 Modified RECIST 1.1

Time frame: Day 1 up to approximately 2 years

ArmMeasureValue (NUMBER)
Non-small Cell Lung CancerPercentage of Patients With Confirmed Prostate-specific Antigen Decline of ≥50% as Assessed According to Prostate Cancer Clinical Trials Working Group 3 Modified RECIST 1.113.5 percentage of participants
Secondary

Percentage of Patients With Objective Response Rate According to RECIST for Immune-based Therapeutics (iRECIST)

Time frame: Day 1 up to approximately 2 years and 2 months

Population: All patients exposed to the combination therapy for at least one treatment cycle. This is defined as patients with 4 doses of SOT101 and 1 dose of pembrolizumab in Cycle 1, or patients exposed to both SOT101 and pembrolizumab in Cycle 1 who started Cycle 2. Only patients with measurable disease at baseline were included

ArmMeasureValue (NUMBER)
Non-small Cell Lung CancerPercentage of Patients With Objective Response Rate According to RECIST for Immune-based Therapeutics (iRECIST)7.7 percentage of participants
Colorectal CancerPercentage of Patients With Objective Response Rate According to RECIST for Immune-based Therapeutics (iRECIST)33.3 percentage of participants
Cutaneous Squamous Cell CarcinomaPercentage of Patients With Objective Response Rate According to RECIST for Immune-based Therapeutics (iRECIST)36.4 percentage of participants
Hepatocellular CarcinomaPercentage of Patients With Objective Response Rate According to RECIST for Immune-based Therapeutics (iRECIST)0 percentage of participants
Metastatic Castration-resistant Prostate CancerPercentage of Patients With Objective Response Rate According to RECIST for Immune-based Therapeutics (iRECIST)12.5 percentage of participants
Ovarian CancerPercentage of Patients With Objective Response Rate According to RECIST for Immune-based Therapeutics (iRECIST)11.4 percentage of participants
Secondary

Progression-free Survival According to iRECIST

Time frame: Day 1 up to approximately 2 years and 2 months

ArmMeasureValue (MEDIAN)
Non-small Cell Lung CancerProgression-free Survival According to iRECIST3.0 months
Colorectal CancerProgression-free Survival According to iRECISTNA months
Cutaneous Squamous Cell CarcinomaProgression-free Survival According to iRECIST4.1 months
Hepatocellular CarcinomaProgression-free Survival According to iRECIST2.7 months
Metastatic Castration-resistant Prostate CancerProgression-free Survival According to iRECIST4.6 months
Ovarian CancerProgression-free Survival According to iRECIST1.6 months
Secondary

Progression-free Survival According to Prostate Cancer Clinical Trials Working Group 3 Modified RECIST 1.1

Time frame: Day 1 up to approximately 2 years and 2 months

ArmMeasureValue (MEDIAN)
Non-small Cell Lung CancerProgression-free Survival According to Prostate Cancer Clinical Trials Working Group 3 Modified RECIST 1.12.6 months
Secondary

Progression-free Survival According to RECIST 1.1

Time frame: Day 1 up to approximately 2 years and 2 months

ArmMeasureValue (MEDIAN)
Non-small Cell Lung CancerProgression-free Survival According to RECIST 1.11.6 months
Colorectal CancerProgression-free Survival According to RECIST 1.1NA months
Cutaneous Squamous Cell CarcinomaProgression-free Survival According to RECIST 1.11.4 months
Hepatocellular CarcinomaProgression-free Survival According to RECIST 1.12.7 months
Metastatic Castration-resistant Prostate CancerProgression-free Survival According to RECIST 1.12.6 months
Ovarian CancerProgression-free Survival According to RECIST 1.11.6 months
Secondary

Time to Confirmed Prostate-specific Antigen Progression as Assessed According to Prostate Cancer Clinical Trials Working Group 3 Modified RECIST 1.1

Time frame: Day 1 up to approximately 2 years

ArmMeasureValue (MEDIAN)
Non-small Cell Lung CancerTime to Confirmed Prostate-specific Antigen Progression as Assessed According to Prostate Cancer Clinical Trials Working Group 3 Modified RECIST 1.12.3 months
Secondary

Time to Response According to iRECIST

Time frame: Day 1 up to approximately 2 years and 2 months

ArmMeasureValue (MEDIAN)
Non-small Cell Lung CancerTime to Response According to iRECISTNA months
Colorectal CancerTime to Response According to iRECIST14.1 months
Cutaneous Squamous Cell CarcinomaTime to Response According to iRECISTNA months
Hepatocellular CarcinomaTime to Response According to iRECISTNA months
Metastatic Castration-resistant Prostate CancerTime to Response According to iRECISTNA months
Ovarian CancerTime to Response According to iRECISTNA months
Secondary

Time to Response According to RECIST 1.1

Time frame: Day 1 up to approximately 2 years and 2 months

ArmMeasureValue (MEDIAN)
Non-small Cell Lung CancerTime to Response According to RECIST 1.1NA months
Colorectal CancerTime to Response According to RECIST 1.114.1 months
Cutaneous Squamous Cell CarcinomaTime to Response According to RECIST 1.1NA months
Hepatocellular CarcinomaTime to Response According to RECIST 1.1NA months
Metastatic Castration-resistant Prostate CancerTime to Response According to RECIST 1.1NA months
Ovarian CancerTime to Response According to RECIST 1.1NA months

Source: ClinicalTrials.gov · Data processed: Feb 11, 2026