About this trial
The purpose of this study is to determine the safety, blood concentrations and treatment effect of CRB-601 in combination with immunotherapy in patients who have advanced solid tumors (cancer) and have exhausted other therapeutic options.CRB-601 targets a protein called avb8 integrin which is expressed by some cancers and not others. This study will focus on tumor types which are know to highly or moderately express this protein.
Researchers will evaluate the side effects caused by treatment, levels of CRB-601 in the blood, and the effect on the participant cancer. This will help researchers understand the right dose of CRB-601 to use for treatment and whether it is an effective treatment to combine with standard of care treatments such as immunotherapy. It will also help the researchers understand whether combining CRB-601 with standard-of-care immunotherapy and immune-priming radiotherapy is a safe and effective approach to treat cancer.
Participants in the study will receive CRB-601 via an infusion every two weeks either alone or in combination with immunotherapy.
There will be assessments to check on the participants general health status (including blood tests) and adverse effects. Participants will also receive regular CT or MRI scans to evaluate the effect of CRB-601 on their cancer. Participants will continue to visit the clinic every two weeks while they are receiving benefit from treatment. If their cancer progresses, participants will be asked to continue to be followed-up by the researchers to understand long-term outcomes, even if they receive other treatments.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Confirmed diagnosis of select locally advanced or metastatic solid tumors that have progressed after at least one line of therapy or have no other standard therapy with proven clinical benefit available.
Measurable disease on imaging as assessed by RECIST 1.1 Eastern Cooperative Oncology Group (ECOG) performance status (PS) greater or equal to 2.
Life expectancy of more than 12 weeks.
Adequate hematologic and end-organ function.
Disqualifiers
History of solid tumor malignancies other than the disease under study within 3 years of study enrollment
History of and/or current cardiovascular events or conditions
Chronic severe liver disease or liver cirrhosis
Systemic autoimmune disease
Trial design
Factorial
Treatments tested in this trial
CRB-601 monoclonal antibody
DrugCRB-601
Anti-PD-1 monoclonal antibody
DrugAnti-PD(L)-1 used as per label
Treatment groups
8
Treatment groupsSee each treatment group below.
Trial outcomes
Primary outcomes
Occurance of Dose-limiting toxicities
Characterize the safety of CRB-601 in combination anti-PD(L)1 therapy
Incidence of treatment emergent adverse events and clinically significant changes in laboratory parameters, ECG, vital signs and physical exam findings over treatment duration
To evaluate the efficacy of CRB-601 in terms of DCR when administered in combination with anti-PD(L)-1
Disease Control Rate (Complete Responses plus Partial Responses plus Stable Disease for at least 4 months as determined by the Investigator using RECIST 1.1.
Secondary outcomes
To evaluate the preliminary antitumor activity of CRB-601 in combination with anti-PD(L)1 therapy
Calculation of the Overall Response Rate (CR + PR + SD as determined by the Investigator using RECIST 1.1)
To characterize the PK profile of CRB-601
Serum concentrations of CRB-601 expressed as Area under the curve (AUC)
To characterize the PK profile of CRB-601
Serum concentrations of CRB-601 expressed as Concentration max (Cmax)
Sponsors and contacts
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