Nivolumab Ipilimumab and Chemoradiation in Treating Patients With Locally Advanced Pancreatic Cancer.

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Herlev Hospital

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Updated on 19 February 2024

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cancer

platelet count

gemcitabine

gilbert's syndrome

neutrophil count

nivolumab

treatment regimen

paclitaxel

chemotherapy regimen

adenocarcinoma

immunosuppressive agents

chemoradiotherapy

carcinoma

cancer chemotherapy

pdac

ipilimumab

experimental drug

celiac disease

serum bilirubin level

immunosuppressant

tumor burden

pancreatic ductal adenocarcinoma

pancreatic cancer

teratogenicity

Summary

Pancreatic ductal adenocarcinoma (PDAC) remains a dreadful disease due to its often advanced stage at diagnosis and poor sensitivity to chemotherapy. A locally unresectable tumor (locally advanced pancreatic cancer (LAPC)) is present in 30% of the cases and is defined as a surgically unresectable tumor encasing the adjacent arteries [celiac axis, superior mesenteric artery (SMA)]. In these patients, chemotherapy has been the standard treatment for decades, optionally combined with radiotherapy. The results of small randomized trials comparing chemoradiotherapy with chemotherapy of patients with LAPC are divergent. Considering the emerging role of the tumor microenvironment (TME), the combination of checkpoint blocking antibodies with agents that target the inhibitory effects of the TME could lead to better responses in tumor historically resistant to checkpoint blocking antibody approaches. Furthermore, the addition of standard-of-care chemotherapy could further potentiate the anti-tumor effects of immunotherapy approaches by reducing the tumor burden, exposing antigens, and directly affecting the immunosuppressive TME compartment.

To explore the safety and synergy of the proposed combinatorial approach, participants with locally advanced PC will receive nivolumab and ipilimumab administered in combination with gemcitabine and nab-paclitaxel followed by immune-chemoradiation.

Description

Patients receive nivolumab and ipilimumab. Nivolumab 3 mg/kg will be given on Day 1 ( 3 days) of each 28-day treatment cycle. Ipilimumab 1 mg/kg will be given only on day 1 in cycle

Nivolumab will be administered as an IV infusion over 30 ( 5) minutes and then, after a 30 minutes rest period, ipilimumab will be administered as an IV infusion over 30 ( 5) minutes.

Pre-medication for chemotherapy (based on standard-of-care and local institutional standards) and chemotherapy will then be administered after a further 30 minutes rest period. The recommended dose of nab-paclitaxel is 100 mg/m2 administered as an IV infusion over 30 to 40 minutes on Days 1, 8, and 15 of each 28-day cycle. Gemcitabine 800 mg/m2 will be adminestered over 30 to 40 minutes immediately after nab-paclitaxel on Days 1, 8, and 15 of each 28-day cycle.

At the beginning of cycle 3, patients also undergo concurrent MRI-guided adaptive SBRT (8 Gy x 3 fractions) delivered by ViewRay MR-Linear Accelerator.

Cycles repeats every 4 weeks for 4 courses (16 weeks) in the absence of disease progression, unacceptable toxicity, withdrawal of consent, or study closure.

Once 4 cycles of study treatment have been completed, subjects without disease progression or unacceptable toxicity may continue as per Investigator's Choice to either:

Continuation of treatment with nivolumab, nab-paclitaxel and gemcitabine or surgery. Nivolumab can be continued until progressive disease (PD), unacceptable toxicity, withdrawal of consent, or up to 12 cycles in total. Patients will receive chemotherapy until PD, unacceptable toxicity or withdrawal of consent, according to investigator's judgment
If tumor response allows for surgical intervention, the subject will be eligible for that treatment as deemed appropriate by the investigators. Surgical intervention may not occur prior to completing the planned 4 cycles of nivolumab, nab-paclitaxel, gemcitabine and SBRT regardless the patient demonstrates a major response to therapy. Patients after PC resection will receive treatment until recurrence, unacceptable toxicity, withdrawal of consent, clear clinical deterioration, or for a maximum of 6 cycles, according to investigator's judgment Patients who discontinue without PD (stable disease (SD), partial response (PR), or complete response (CR)) will have both the safety follow-up period and survival follow-up period to occur simultaneously during the 2-year follow-up period. The duration of this follow-up is up to 2 years following the last dose of study treatment, although a longer follow-up period could be considered in selected cases if an efficacy signal is apparent. Patients will receive follow-up CT/MRI scans every 2 months (14 days) until documented progression of disease, withdrawal of consent from active participation in the study, lost to follow-up, or for at least 2 years after start of treatment, whichever is earliest. Tumor evaluations will be assessed by the investigators and response to be determined according to response evaluation criteria in solid tumors (RECIST) v1.1 guidelines. Tumor assessment scans, for participants who have ongoing clinical benefit beyond the 2-year period from start of treatment, may continue to be collected as part of standard-of-care treatment. Subsequent therapies will also be recorded in this survival follow-up period.

All subjects who discontinue treatment for any reason will have a safety follow-up visit about 30, 60 and 100 days after treatment discontinuation and will be followed for OS and post-study anticancer therapies approximately every 90 days by phone or review of medical records until death, withdrawal of consent, or lost to follow-up.

To minimize the risks of adding or nivolumab + ipilimumab followed by nivolumab and chemo-radiation, safety will be monitored by a Bayesian stopping rule for the rate of treatment-related AEs leading to discontinuation greater than 30% (summarized baseline toxicity rate). For example, if 3 patients out of the first 6 or 4 out of the first 7 evaluable patients experience treatment-related AEs leading to discontinuation, accrual to the trial will be temporarily suspended and the principle investigator and study team will review the toxicity data and recommend either modification or termination of the trial.

Details

Condition	Locally Advanced Pancreatic Cancer (LAPC)
Age	18-100 years
Treatment	nab-paclitaxel, Gemcitabine, Nivolumab, Ipilimumab, SBRT
Clinical Study Identifier	NCT04247165
Sponsor	Herlev Hospital
Last Modified on	19 February 2024

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Eligibility		Yes	No	Not Sure
Inclusion Criteria
	Signed informed consent
	Subjects must have signed and dated an IRB/IEC approved written informed consent form in accordance with regulatory and institutional guidelines. This must be obtained before the performance of any protocol related procedures that are not part of normal subject care
	Subjects must be willing and able to comply with scheduled visits, treatment schedule, laboratory testing, and other requirements of the study
	Histological or cytological confirmation of locally advanced pancreatic carcinoma prior to entering this study
	No prior chemotherapy regimens received for PC
	Age 18 years or older
	Life expectancy greater than 6 months
	ECOG/WHO Performance Status (PS) 0-1
	All participants will be required to undergo mandatory pre- and on-treatment biopsies at acceptable clinical risk as judged by the investigator. An archival pre-treatment sample is acceptable
	Patients must have normal organ and marrow function as defined below
	Absolute neutrophil count (ANC) 1.5 x 10/L
	Platelet count 100 x 10/L
	Serum bilirubin 1.5 x upper limit of normal (ULN) (patients with Gilbert's Syndrome must have a total bilirubin 50 mmol/L)
	AST/ALT 5 x ULN
	Serum creatinine 1.5 x ULN or CrCl 40 mL/min (using the Cockcroft-Gault formula)
	Women of child bearing potential (WOCBP) must use method(s) of contraception as indicated in Appendix 3. For a teratogenic study drug and/or when there is insufficient information to assess teratogenicity (preclinical studies have not been done), a highly effective method(s) of contraception (failure rate of less than 1% per year) is required. The individual methods of contraception and duration should be determined in consultation with the investigator. WOCBP must follow instructions for birth control when the half-life of the investigational drug is greater than 24 hours, contraception should be continued for a period of 30 days plus the time required for the investigational drug to undergo five half-lives. The half-life of nivolumab and ipilimumab is up to 25 days and 18 days, respectively. WOCBP should therefore use an adequate method to avoid pregnancy for 23 weeks (30 days plus the time required for nivolumab to undergo five half-lives) after the last dose of investigational drug
	Men who are sexually active with WOCBP must use any contraceptive method with a failure rate of less than 1% per year (Appendix 3). The investigator shall review contraception methods and the time period that contraception must be followed. Men that are sexually active with WOCBP must follow instructions for birth control when the half-life of the investigational drug is greater than 24 hours, contraception should be continued for a period of 90 days plus the time required for the investigational drug to undergo five half-lives. The half-life of nivolumab is up to 25 days. Men who are sexually active with WOCBP must continue contraception for 31 weeks (90 days plus the time required for nivolumab to undergo five half-lives) after the last dose of investigational drug. Women who are not of childbearing potential (ie, who are postmenopausal or surgically sterile as well as azoospermic men do not require contraception
	Subjects must have signed and dated a BIOPAC approved written informed consent form in accordance with regulatory and institutional guidelines
Exclusion Criteria
	Metastatic disease
	Prior treatment with an anti-PD-1, anti-PD-L1, anti-PD-L2, anti-CD137, or anti-CTLA-4 antibody, or any other antibody or drug specifically targeting T-cell co-stimulation or checkpoint pathways
	Any serious or uncontrolled medical disorder that, in the opinion of the investigator, may increase the risk associated with study participation or study drug administration, impair the ability of the subject to receive protocol therapy, or interfere with the interpretation of study results
	Participants with active, known or suspected autoimmune disease. Participants with vitiligo, type I diabetes mellitus, residual hypothyroidism due to autoimmune condition only requiring hormone replacement, psoriasis not requiring systemic treatment, or conditions not expected to recur in the absence of an external trigger are permitted to enroll
	Participants with a condition requiring systemic treatment with either corticosteroids (>10 mg daily prednisone equivalents) or other immunosuppressive medications. Inhaled or topical steroids and adrenal replacement doses > 10 mg daily prednisone equivalents are permitted in the absence of active autoimmune disease
	Patients should be excluded if they have known history of testing positive for human immunodeficiency virus (HIV) or known acquired immunodeficiency syndrome (AIDS)
	Allergies and adverse drug reaction
	History of allergy to study drug components
	History of severe hypersensitivity reaction to any monoclonal antibody
	WOCBP who are pregnant or breastfeeding

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Nivolumab Ipilimumab and Chemoradiation in Treating Patients With Locally Advanced Pancreatic Cancer.