Study Of Personalized Tumor Vaccines (PCVs) And A PD-L1 Blocker In Patients With Pancreatic Cancer That Can Be Treated With Surgery

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

Study Registration Dates	Results Reporting Dates	Study Record Updates
First Submitted 2019-11-12	Results First Submitted N/A	Last Update Submitted that met QC Criteria 2025-01-02
First Submitted that Met QC Criteria 2019-11-12	Results First Submitted that Met QC Criteria N/A	Last Update Posted (ACTUAL) 2025-01-03
First Posted (ACTUAL) 2019-11-13	Results First Posted N/A	Last Verified 2025-01

Design Details

Primary Purpose:
Treatment

Allocation:
Na

Interventional Model:
Single Group

Masking:
None

Arms and Interventions

Participant Group/Arm	Intervention/Treatment
EXPERIMENTAL: Pancreatic Cancer Radiologically resectable primary pancreatic tumors	DRUG: Atezolizumab Atezolizumab will be administered 6 weeks post-tumor resection (+/- 2 weeks) BIOLOGICAL: RO7198457 RO7198457 will be administered 9 weeks post-tumor resection (+/- 2 weeks) DRUG: mFOLFIRINOX mFOLFIRINOX regimen will be administered 21 weeks post-tumor resection (+/- 2 weeks)

Participant Group/Arm

Intervention/Treatment

EXPERIMENTAL: Pancreatic Cancer

Radiologically resectable primary pancreatic tumors

DRUG: Atezolizumab

Atezolizumab will be administered 6 weeks post-tumor resection (+/- 2 weeks)

BIOLOGICAL: RO7198457

RO7198457 will be administered 9 weeks post-tumor resection (+/- 2 weeks)

DRUG: mFOLFIRINOX

mFOLFIRINOX regimen will be administered 21 weeks post-tumor resection (+/- 2 weeks)

Primary Outcome Measures	Measure Description	Time Frame
Drug related toxicity	The primary objective of this trial is to evaluate the safety of a personalized tumor vaccine combined with atezolizumab and mFOLFIRINOX	2 years

Secondary Outcome Measures	Measure Description	Time Frame

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person’s general health condition or prior treatments.

Ages Eligible for Study:
ALL

Sexes Eligible for Study:
18 Years

Accepts Healthy Volunteers:

Subjects must be >/= 18 years of age at time of informed consent
Able to comply with the study protocol, in the investigator's judgment
Subjective with radiographically resectable primary pancreatic tumors with radiographic features consistent with adenocarcinoma will be evaluated for surgical resection
Tumors must be radiographically resectable, defined as:

A clear fat plane around the celiac and superior mesenteric arteries
patent superior mesenteric and portal veins without primary tumor involvement
No encasement of the superior mesenteric vein or portal veins
No encasement of the superior mesenteric or hepatic arteries
No metastatic disease
No extra-regional nodal disease
Subjects with histologically confirmed resected ductal pancreatic adenocarcinoma with macroscopic complete resection (R0 and R1) will be selected for neoantigen vaccine creation. Subjects with neuroendocrine (and mixed type) tumors are excluded
Pancreatic cancer surgical staging: T 1-3, N0-2, M0

Performance status of 0 or 1 on Eastern Cooperative Oncology Group (ECOG) Scale of Performance Status (Section 20.0 APPENDICES, Appendix1)
Subjects must not have had prior chemotherapy, radiation therapy, or immunotherapy for PDAC
Subjects must be able to read, understand, and sign informed consent
Women of childbearing potential must have a negative serum or urine pregnancy test within 14 days prior to study initiation
For women of childbearing potential: agreement to remain abstinent (refrain from heterosexual intercourse) or use contraceptive measures that result in a failure rate of less than (<) 1% per year during the treatment period and for at least 5 months after the last dose of atezolizumab and for at least 90 days after the last dose of RO7198457. A woman is considered to be of childbearing potential if she is postmenarcheal, has not reached a postmenopausal state (>/= 12 continuous months of amenorrhea with no identified cause other than menopause), and has not undergone surgical sterilization (removal of ovaries and/or uterus)
For men: agreement to remain abstinent (refrain from heterosexual intercourse) or use a condom during the entire study period and up to 90 days after last administration of RO7198457. Male participants should not donate sperm for 90 days after the last dose of RO7198457
Examples of contraceptive methods with a failure rate of <1% per year include bilateral tubal ligation, male sterilization and established proper use of hormonal contraceptives that inhibit ovulation, hormone-releasing intrauterine devices and copper intrauterine devices
Hormonal contraceptive methods must be supplemented by a barrier method plus spermicide
The reliability of sexual abstinence should be evaluated in relation to the duration of the clinical trial and the preferred and usual lifestyle of the patient. Periodic abstinence (e.g., calendar, ovulation, symptothermal, or postovulation methods) and withdrawal are not acceptable methods of contraception

Prior neoadjuvant treatment or radiation therapy for PDAC
Prior therapy with uPD-1 antibody or any other immune therapy
Borderline resectable, locally unresectable or metastatic PDAC
Pancreas tumor histology other than PDAC
Pregnancy, breastfeeding, or intending to become pregnant during the study or within 90 days after the last dose of study treatment
Life expectancy less than 12 weeks
Inability to comply with study and/or follow-up procedures
Any other malignancy for which the patient is undergoing active treatment which will be concurrent with the investigational agent in this study.
Patients with unresolved Clavien-Dindo >/= Grade 3 (Section 20.0 APPENDICES ,Appendix 2) postoperative complications
Actie, uncontrolled bacterial, viral, or fungal infection(s) requiring systemic therapy, defined as ongoing signs/symptoms related to the infection without improvement despite appropriate antibiotics, antiviral therapy, and/or other treatment
Active tuberculosis
Known infection with hepatitis B or C, or history of human immunodeficiency virus (HIV) infection or subjects receiving immunosuppressive or myelosuppressive medications that would, in the opinion of the investigator, increase the risk of serious neutropenic complications
Known hypersensitivity or allergy to the active substance or to any of the excipients of RO7198457, atezolizumab, oxaliplatin, leucovorin, irinotecan, or fluorouracil
Serious medical risk factors involving any of the major organ systems, or serious psychiatric disorders, which could compromise the subject's safety or the study data integrity. These include, but are not limited to:

History of connective tissue disorders (e.g., lupus, scleroderma, arteritis nodosa)
History of interstitial lung disease, slowly progressive dyspnea and unproductive cough, sarcoidosis, silicosis, idiopathic pulmonary fibrosis, pulmonary hypersensitivity pneumonitis, or multiple allergies
History of the following within 6 months prior to RO7198457 administration: a myocardial infarction, severe/unstable angina pectoris, coronary/peripheral artery bypass graft, New York Heart Association (NYHA) Class III-IV heart failure, uncontrolled hypertension, clinically significant cardiac dysthythmia, or electrocardiogram (ECG) abnormality (exceptions: atrial fibrillation, paroxysmal supraventricular tachycardia), cerebrovascular accident, transient ischemic attack,, or seizure disorder
History or autoimmune disease, including but not limited to systemic lupus erythematosus, rheumatoid arthritis, inflammatory bowel disease, vascular thrombosis associated with antiphospholipid syndrome Wegener's granulomatosis, Sjogren's syndrome, Bell's palsy, Guillain-Barre syndrome, multiple sclerosis, vasculitis, or glomerulonephritis with the following caveats:

Patients with a history of autoimmune hypothyroidism on a stable dose of thyroid replacement hormone may be eligible
Patient with controlled type 1 diabetes mellitus on a stable insulin regimen may be eligible
Patients type 2 diabetes mellitus may be eligible

Rash must cover less than 10% of the body surface area (BSA)
Disease is well controlled at baseline and only requires low potency topical steroids
No acute exacerbations of underlying condition within the last 12 months (e.g., not requiring psorlen and ultraviolet A (PUVA) radiation, methotrexate retinoids, biologic agents, oral calcineurin inhibitors, high potency, or oral steroids)
Treatment with systemic immunosuppressive medication (including but not limited to prednisone >10mg/day, cyclophosphamide, azathioprine, methotrexate, thalidomide, and TNF-x antagonists) within 2 weeks prior to RO7198457 administration. Patients who have received acute, low-dose, systemic immunosuppressant medication (e.g., a one-time dose of dexamethasone for nausea) may be enrolled in the study after discussion with and approval by the PI and Co-PI. The use of inhaled corticosteroids (e.g., fluticasone for chronic obstructive pulmonary disease) is allowed. The use of oral mineralocorticoids (e.g., flurocortisone for patients with orthostatic hypotension) is allowed. Physiologic doses of corticosteroids for adrenal insufficiency are allowed.
Subjects with allergies to IV contrast agents requiring pretreatment with corticosteroids will be excluded. Corticosteroids are immunosuppressive and may interfere with RO7198457 tolerability and efficacy. Given that there are serial contrast agent-dependent follow-up imaging studies built into the study which will overlap with vaccination, subjects who require pretreatment with corticosteroids prior to IV contrast administration will be excluded
History of idiopathic pulmonary fibrosis, pneumonitis (including drug induced), organizing pneumonia (i.e., bronchioloitis obliterans, cryptogenic organizing pneumonia, etc.), or evidence of active pneumonitis on screening chest CT scan. History of radiation pneumonitis in the radiation field (fibrosis) is permitted
Known primary immunodeficiencies, either cellular (e.g., DiGeorge syndrome, T-negative severe combined immunodeficiency [SCID]) or combined T- and B-cell immunodeficiencies (e.g., T- and B-negative SCID, Wiskott-Aldrich syndrome, ataxia telangiectasia, common variable immunodeficiency)
Prior allogeneic bone marrow transplantation or prior solid organ transplantation
Any other disease, metabolic dysfunction, physical examination finding, or clinical laboratory finding giving reasonable suspicion of a disease or condition that would contraindicate the use of an investigational drug
Known clinically significant liver disease, including active viral, alcoholic, or other hepatitis, cirrhosis, and inherited liver disease or current alcohol abuse
Previous splenectomy
Administration of a live, attenuated vaccine within 4 weeks before RO7198457 administration or anticipation that such a live attenuated vaccine will be required during the study. Influenza vaccination should be given during influenza season only. Patients must not receive live, attenuated influenza vaccine (e.g., FluMist) within 4 weeks prior to RO7198457 administration or at any time during the study, and for 90 days following the last study treatment

Collaborators and Investigators

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Clinical Trial Record