A Health Service Research Study to Investigate Survival of Metastatic Pancreatic Cancer Patients After Sequential Chemotherapy

Study Overview
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Brief Summary
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The aim of the study is to assess the efficacy of second and third line therapies (OFF vs. FOLFIRI) in a sequential cross-over design in patients pretreated with nab-paclitaxel/gemcitabine first line.

Detailed Description
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Secondary objectives are assessment of safety and feasibility of the sequential cross-over treatment approach for advanced treatment lines in PDAC. 204 patients will be randomized into the treatments arms. Cross-over will take place after progress during second line therapy.

Official Title
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A Health Service Research Study to Investigate Survival of Metastatic Pancreatic Cancer Patients After Sequential Chemotherapy: An AIO Phase II Cross Over Trial (PANTHEON)

Conditions
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Metastatic Pancreatic Ductal Adenocarcinoma

Intervention / Treatment
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* Drug: OFF
* Drug: FOLFIRI Protocol


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Written informed consent and any locally-required authorization (EU Data Privacy Directive in the EU) obtained from the subject prior to performing any protocol-related procedures, including screening evaluations Age ≥ 18 years at time of study entry Unresectable adenocarcinoma of the pancreas previously treated in the palliative setting with gemcitabine and nabpaclitaxel (Abraxane®) Adequately documented recurrence and disease status after/under 1st line (Best response, duration of treatment, time to progression, preexisting PNP and other side effects) Radiologically confirmed disease progression during 1st-line therapy and measurable reference cancer site(s) as defined by RECIST1.1 Randomization and start of 2nd-line treatment possible within 4 weeks after radiologically documented disease progression during 1st-line therapy ECOG performance status 0-2 No prior radiotherapy Adequate blood count, liver-enzymes, and renal function: Absolute neutrophil count (ANC) ≥ 1.5 x 109/L (> 1500 per mm3) Platelet count ≥ 100 x 109/L (>100,000 per mm3) AST (SGOT)/ALT (SGPT) < 2.5 x institutional upper limit of normal unless liver metastases are present, in which case it must be < 5x ULN Serum creatinine CL ≥ 60 mL/min calculations according to local standard Bilirubin < 3 ULN Female subjects must either be of non-reproductive potential (ie, post-menopausal by history: ≥ 60 years old and no menses for ≥ 1 year without an alternative medical cause; OR history of hysterectomy, OR history of bilateral tubal ligation, OR history of bilateral oophorectomy) or must have a negative serum pregnancy test upon study entry Subject is willing and able to comply with the protocol for the duration of the study including undergoing treatment and scheduled visits and examinations including follow up Exclusion Criteria: Serious cardiovascular disease (eg, unstable coronary artery disease or myocardial infarction within 3 months prior to study start) Preexisting polyneuropathy (PNP) ≥ grade 3 [National Cancer Institute Common Toxicity Criteria grade 3 or 4 sensory or motor neuropathy] Prior or concurrent malignancy (other than pancreatic cancer) which either progresses or requires active treatment. Exceptions are: basal cell cancer of the skin History of DPD deficiency Morbus Gilbert History of hypersensitivity to any of the study drugs or any of the constituents of the products Medication that is known to interfere with any of the agents applied in the trial Female subjects who are pregnant, breast-feeding or male or female patients of reproductive potential who are not employing an effective method of birth control (failure rate of less than 1% per year) Any condition that, in the opinion of the investigator, would interfere with evaluation of study treatment or interpretation of patient safety or study results Any medical condition that contraindicates dosing with any of the IMPs or constitutes a safety risk for the patient including but not limited to: chronic inflammatory bowel disease and/or bowel obstruction. active uncontrolled infection clinically significant bleeding or bleeding diathesis clinically significant stomatitis active ulceration of the gastrointestinal tract Previous enrollment or randomization in the present study (does not include screening failure) Patient who has been incarcerated or involuntarily institutionalized by court order or by the authorities § 40 Abs. 1 S. 3 Nr. 4 AMG Patients who are unable to consent because they do not understand the nature, significance and implications of the clinical trial and therefore cannot form a rational intention in the light of the facts [§ 40 Abs. 1 S. 3 Nr. 3a AMG]

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Crossover Assignment
Masking: Single


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: OFF<br> | Drug: OFF<br>* OFF: 5-FU 2000 mg/m2 as 24 hour infusion + Na folinic acid 200 mg/m2 on D1, 8, 15, 22 Oxaliplatin 85 mg/m2 on D8, 22 3 weeks rest after D22; Cycle q42d<br>|
| Experimental: FOLFIRI<br> | Drug: FOLFIRI Protocol<br>* Irinotecan 180 mg /m2 5-FU 400 mg/m2 (bolus) + 2400 mg/m2 as 46 hour infusion Na folinic acid 200 mg/m2 Cycle q2w<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Progression-free survival during 2nd line therapy (PFS2) | Progression-free survival time from randomization till progress during second line therapy. | 49 months |