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Study of CRS-207, Pembrolizumab, Ipilimumab, and Tadalafil in Metastatic Pancreatic Cancer

A Phase 2 Study of the Safety, Efficacy, and Immune Response of CRS-207, Pembrolizumab, Ipilimumab, and Tadalafil in Patients With Previously Treated Metastatic Pancreatic Adenocarcinoma

Status
Active, not recruiting
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT05014776
Enrollment
17
Registered
2021-08-20
Start date
2022-08-22
Completion date
2026-04-03
Last updated
2026-02-24

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

Conditions

Pancreatic Cancer

Keywords

Pancreatic cancer, Pembrolizumab, Ipilimumab, CRS-207, Tadalafil, Immunotherapy, Anti-PD-1, Anti-CTLA-4, Adenocarcinoma, Carcinoma

Brief summary

The purpose of this study is to evaluate the safety and clinical activity of tadalafil, pembrolizumab, ipilimumab, and CRS-207 in subjects with metastatic pancreatic adenocarcinoma who have progressed after at least 1 prior chemotherapy regimen.

Interventions

DRUGTadalafil

Patients will receive treatment every 3 weeks for 6 cycles of treatment within a course (total of 18 weeks). Tadalafil (20 mg) will be administered orally every day on days 3-21 for cycles 1-6.

DRUGPembrolizumab

Patients will receive treatment every 3 weeks for 6 cycles of treatment within a course (total of 18 weeks). Pembrolizumab (200 mg) will be administered IV on Day 1 of cycles 1-6.

DRUGIpilimumab

Patients will receive treatment every 3 weeks for 6 cycles of treatment within a course (total of 18 weeks). Ipilimumab (50mg) will be administered IV on Day 1 of Cycles 1, 3, and 5.

Patients will receive treatment every 3 weeks for 6 cycles of treatment within a course (total of 18 weeks). CRS-207 \[1 × 10\^9 colony forming units (CFU) in 100ml NS\] will be administered IV on Day 2 of Cycles 1-6.

Sponsors

Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
Lead SponsorOTHER
Lustgarten Foundation
CollaboratorOTHER
National Cancer Institute (NCI)
CollaboratorNIH

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

* Age ≥18 years. * Have histologically or cytologically proven adenocarcinoma of the pancreas. * Have previously treated metastatic disease. * Have radiographic disease progression. * Patients with the presence of at least one measurable tumor lesion. * Patient's acceptance to have a tumor biopsy at baseline and on * Eastern Cooperative Oncology Group (ECOG) performance status 0 or 1 * Patients must have adequate organ and marrow function defined by study-specified laboratory tests. * For both Women and Men, must use acceptable form of birth control while on study. * Ability to understand and willingness to sign a written informed consent document.

Exclusion criteria

* Known history or evidence of brain metastases. * Had chemotherapy, radiation, or biological cancer therapy within the last 14 days. * Have received an investigational agent or device within the last 28 days. * Had surgery within the last 28 days. * Expected to require any other form of systemic or localized cancer therapy while on study. * Have received a vaccine within the last 14 days (7 days for the COVID vaccine) or received a live vaccine within the last 30 days. * Have received steroids within the last 14 days. * Use more than 4 g/day of acetaminophen. * Use of organic nitrates. * Use of guanylate cyclase (GC) stimulators such as riociguat. * Consumption of substantial amounts of alcohol (≥5 units/day) * Use of strong or moderate cytochrome P450 3A4 (CYP3A4) inhibitor or inducer. * Patients on immunosuppressive agents within the last 7 days * Known allergy to both penicillin and sulfa. * Severe hypersensitivity reaction to any monoclonal antibody. * History of severe hypersensitivity to tadalafil. * Have implant(s) or device(s) that has not and cannot be easily removed. * Have artificial joints or implanted medical devices that cannot be easily removed. * Have any evidence of clinical or radiographic ascites. * Have significant and/or malignant pleural effusion * Uncontrolled intercurrent illness. * Subjects with active, known or suspected autoimmune disease. * Have a tissue or organ allograft, including corneal allograft. * Have been diagnosed HIV, Hepatitis B or C positive. * Is on supplemental home oxygen. * Has an unhealed surgical wound or ulcer, or a bone fracture considered non-healing. * Has clinically significant heart disease * Prior history of non-arterial ischemic optic retinopathy. * History of significant hypotensive episode requiring hospitalization within 6 months. * Has insufficient peripheral vein access. * Is unwilling or unable to follow the study schedule for any reason. * Is pregnant or breastfeeding.

Design outcomes

Primary

MeasureTime frameDescription
Objective Response Rate (ORR) Using Response Evaluation Criteria for Solid Tumors (RECIST 1.1)9 monthsObjective Response Rate (ORR) is defined as the number of patients achieving a complete response (CR) or partial response (PR) based on RECIST 1.1 criteria. CR = disappearance of all target lesions, PR is =\>30% decrease in sum of diameters of target lesions. Participants who discontinue due to toxicity or clinical progression prior to post-baseline tumor assessments will be considered as non-responders. Participants who discontinue for other reasons prior to their first dose of study drug will not included in the analysis.

Secondary

MeasureTime frame
Number of Participants Experiencing Drug-Related Adverse Events (AEs) Requiring Treatment Discontinuation9 months

Countries

United States

Contacts

PRINCIPAL_INVESTIGATORKatherine Bever, MD

Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins Medical Institution

Participant flow

Participants by arm

ArmCount
Arm A - Tadalafil, Pembrolizumab, Ipilimumab, CRS-207
Tadalafil: Patients will receive treatment every 3 weeks for 6 cycles of treatment within a course (total of 18 weeks). Tadalafil (20 mg) will be administered orally every day on days 3-21 for cycles 1-6. Pembrolizumab: Patients will receive treatment every 3 weeks for 6 cycles of treatment within a course (total of 18 weeks). Pembrolizumab (200 mg) will be administered IV on Day 1 of cycles 1-6. Ipilimumab: Patients will receive treatment every 3 weeks for 6 cycles of treatment within a course (total of 18 weeks). Ipilimumab (50mg) will be administered IV on Day 1 of Cycles 1, 3, and 5. CRS-207: Patients will receive treatment every 3 weeks for 6 cycles of treatment within a course (total of 18 weeks). CRS-207 \[1 × 10\^9 colony forming units (CFU) in 100ml NS\] will be administered IV on Day 2 of Cycles 1-6.
17
Total17

Baseline characteristics

CharacteristicArm A - Tadalafil, Pembrolizumab, Ipilimumab, CRS-207
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
10 Participants
Age, Categorical
Between 18 and 65 years
7 Participants
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
17 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
2 Participants
Race (NIH/OMB)
Black or African American
5 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
1 Participants
Race (NIH/OMB)
White
9 Participants
Region of Enrollment
United States
17 Participants
Sex: Female, Male
Female
8 Participants
Sex: Female, Male
Male
9 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
16 / 17
other
Total, other adverse events
17 / 17
serious
Total, serious adverse events
12 / 17

Outcome results

Primary

Objective Response Rate (ORR) Using Response Evaluation Criteria for Solid Tumors (RECIST 1.1)

Objective Response Rate (ORR) is defined as the number of patients achieving a complete response (CR) or partial response (PR) based on RECIST 1.1 criteria. CR = disappearance of all target lesions, PR is =\>30% decrease in sum of diameters of target lesions. Participants who discontinue due to toxicity or clinical progression prior to post-baseline tumor assessments will be considered as non-responders. Participants who discontinue for other reasons prior to their first dose of study drug will not included in the analysis.

Time frame: 9 months

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Arm A - Tadalafil, Pembrolizumab, Ipilimumab, CRS-207Objective Response Rate (ORR) Using Response Evaluation Criteria for Solid Tumors (RECIST 1.1)0 Participants
Secondary

Number of Participants Experiencing Drug-Related Adverse Events (AEs) Requiring Treatment Discontinuation

Time frame: 9 months

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
Arm A - Tadalafil, Pembrolizumab, Ipilimumab, CRS-207Number of Participants Experiencing Drug-Related Adverse Events (AEs) Requiring Treatment Discontinuation0 Participants

Source: ClinicalTrials.gov · Data processed: Feb 25, 2026