Study of PULSAR-ICI +/- IMSA101 in Patients With Oligoprogressive Solid Tumor Malignancies

Stopped early · Phase 2

Conditions studied: Oligoprogressive

In brief

Phase 2, open-label, multicenter, randomized study comparing the safety and efficacy of personalized ultra-fractionated stereotactic adaptive radiotherapy (PULSAR) combined with immune checkpoint inhibitor (ICI) immunotherapy (PULSAR-ICI) + IMSA101 and PULSAR-ICI alone in patients with oligoprogressive solid tumor malignancies after prior anti-cancer therapy.

Key facts

Study ID

NCT05846659

Run by

ImmuneSensor Therapeutics Inc.

People needed

16

Starts

2023-07-07

Expected to finish

2024-11-20

Last updated by the study team

2026-05-15

Who can join

Age: 18 and older. Sex: any. Healthy volunteers: not accepted.

You may qualify if…

• Male or female patients ≥ 18 years of age
• Signed informed consent and mental capability to understand the informed consent
• Histologically or cytologically documented solid tumor malignancies demonstrating new progression through prior anti-cancer therapy, with a prior 2 months of clinical stability (with at least Stable Disease), with radiographically documented presence of ≤ 6 metastatic lesions consistent with the diagnosis of "oligoprogressive" disease that are technically amenable to PULSAR
• Patient's disease must be evaluable per RECIST Version 1.1
• All metastatic lesions amenable to administration of radiotherapy, at the discretion of the investigator
• Must have at least one single pre-defined progressing lesion/lesion site (longest diameter ≥ 10 mm and ≤ 50 mm) suitable for intra-tumoral injection
• Eastern Cooperative Oncology Group (ECOG) performance status of ≤ 1
• Electrocardiogram (ECG) without evidence of clinically meaningful conduction abnormalities or active ischemia as determined by the investigator
• Acceptable organ and marrow function as defined below:
• Absolute neutrophil count (ANC) > 1,500 cells/μL
• Platelets > 50,000 cells/μL
• Total bilirubin ≤ 1.5 times (×) the upper limit of normal (ULN)
• Aspartate aminotransferase (AST)/alanine aminotransaminase (ALT) ≤ 2.5 × ULN. If liver metastases are present, AST/ALT < 5 × ULN
• Serum creatinine < 1.5 mg/dL and a measured creatinine clearance ≥ 50 mL/min using the Cockcroft-Gault formula
• Prothrombin time (PT)/partial thromboplastin time (PTT) ≤ 1.5 × ULN
• Women of child-bearing potential (defined as a female who has experienced menarche and who has not undergone successful surgical sterilization [hysterectomy, bilateral salpingectomy, or bilateral oophorectomy]) or is not postmenopausal (defined as amenorrhea for at least 12 consecutive months with an appropriate clinical profile at the appropriate age, eg, greater than 45 years) must have a negative serum pregnancy test prior to first dose of study treatment
• Male and female patients with reproductive potential must agree to use two forms of highly effective contraception throughout the study

You may not qualify if…

• Prior receipt of stimulator of interferon genes (STING) agonist
• Prior receipt of therapeutic radiotherapy to all progressive lesions intended for PULSAR treatment
• Anti-cancer therapy, except pembrolizumab and nivolumab, within 4 weeks or < 5 half-lives of the first dose of study treatment
• Existence of primary tumor that requires therapeutic treatment beyond the provided immune checkpoint inhibitor drug
• Failure to recover, to Grade 1 or less, from clinically significant AEs due to prior anti-cancer therapy, as judged by the investigator
• Previous life-threatening (Grade 4) immune-related adverse event (irAE)
• Known untreated brain metastases or treated brain metastases that have not been stable (scan showing no worsening of central nervous system [CNS] lesion[s] and no requirement of corticosteroids) ≥ 4 weeks prior to study enrollment
• Existence of actionable mutations that are eligible for a mutation-targeting drug that represents standard-of-care
• Baseline prolongation of QT/corrected QT (QTc) interval (QTc interval > 470)
• Uncontrolled intercurrent illness (including, but not limited to, ongoing or active infection, symptomatic congestive heart failure, unstable angina pectoris, cardiac arrhythmia, or psychiatric illness/social situations) that in the opinion of the investigator would limit compliance with study requirements
• Women who are pregnant or breastfeeding
• Sponsor reserves the right to exclude any patient from the study on the basis of pre-study medical histories, physical examination findings, clinical laboratory results, prior medications, or other entrance criteria

Where it is running

• City of Hope Orange County Lennar Foundation Cancer Center — Irvine, California, United States
• USC/Norris Comprehensive Cancer Center — Los Angeles, California, United States
• UCLA — Los Angeles, California, United States
• Northwestern Memorial Hospital — Chicago, Illinois, United States
• University of Chicago Medical Center — Chicago, Illinois, United States
• Brigham and Women's Hospital/Dana Farber Cancer Institute — Boston, Massachusetts, United States
• Washington University School of Medicine — St Louis, Missouri, United States
• Laura & Isaac Perlmutter Cancer Center at NYU Langone Health — New York, New York, United States
• Montefiore Medical Center — The Bronx, New York, United States
• Louis Stokes Cleveland VA Medical Center — Cleveland, Ohio, United States
• MetroHealth Medical Center — Cleveland, Ohio, United States
• UT Southwestern Medical Center — Dallas, Texas, United States
• Baylor College of Medicine Medical Center — Houston, Texas, United States
• University of Wisconsin Hospital and Clinics — Madison, Wisconsin, United States

Full record on ClinicalTrials.gov

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