PRIMUS002: Looking at 2 Neo-adjuvant Treatment Regimens for Resectable and Borderline Resectable Pancreatic Cancer

Judith Dixon-Hughes

Status and phase: Terminated; Phase 2

Conditions: Neoplasms Pancreatic

Treatments: Drug: AG; Drug: FOLFOX-A

Study type: Interventional

Funder types: Other

Identifiers

NCT04176952

PRIMUS0022016

Details and patient eligibility

About

PRIMUS 002 is looking at 2 different chemotherapy regimens in the neo-adjuvant setting for pancreatic cancer. Each treatment will be given for 3 months prior to surgery

Full description

This is an integrated, open label, non-randomised, phase II trial of 2 neo-adjuvant regimens (FOLFOX-A and AG) assessing efficacy and toxicity with integrated translational work. The study is powered on testing a proposed DNA damage response deficient biomarker for responsiveness in patients treated with FOLFOX-A; patients being treated with AG are recruited concurrently. The study has a prospective safety assessment of neo-adjuvant chemotherapy and neo-adjuvant chemotherapy followed by chemoradiotherapy consisting of conventional radiotherapy with concomitant capecitabine. This safety assessment will include all patients (FOLFOX-A and AG)

Enrollment: 31 patients

Sex: All

Ages: 16+ years old

Volunteers: No Healthy Volunteers

Inclusion criteria

1. Patient has been enrolled in the Precision-Panc Master Protocol and their tissue has been deemed suitable for Next Generation Sequencing analysis (a Precision-Panc Master Protocol identifier will be required at the time of study enrolment)

2. Signed informed consent given for PRIMUS 002 study

3. Age ≥ 16 years

4. Resectable or borderline resectable pancreatic cancer as defined by National Comprehensive Cancer Network criteria following discussion at the Multi Disciplinary Team

5. Measurable Disease as per RECIST 1.1

6. Histological or cytologically proven pancreatic ductal adenocarcinoma (including variants)

7. Able to undergo biliary drainage using a covered or partially covered self-expanding metal stent if jaundiced

8. Eastern Cooperative Oncology Group performance status 0 and 1

9. Adequate liver/bone marrow function as defined by:

   1. Neutrophils (ANC) ≥ 1.5 x 109/l
   2. Platelets ≥ 100 x 109/l
   3. Haemoglobin ≥ 9.0g/dL
   4. White Blood Cells (WBC) ≥ 3 x 109/l
   5. Total bilirubin ≤ 1.5 x institutional upper limit of normal (ULN) unless bilirubin rise is due to Gilbert's syndrome
   6. Aspartate transaminase (AST) and alanine aminotransferase (ALT) ≤ 2.5 x ULN (or <5 x ULN in the presence of liver metastases)
   7. Estimated creatinine clearance ≥ 60 mL/min (as calculated by Cockcroft and Gault or Wright formula or measured by EDTA clearance)

10. Negative serum Human Chorionic Gonadotropin (HCG) test for females with child bearing potential. Postmenopausal women must have been amenorrhoeic for at least 12 months to be considered of non-childbearing potential

11. Woman of child bearing potential, and men with female partners of child bearing potential, must agree to use adequate contraceptive measures (see section 7.1.11.1) for the duration of the study and for up to 6 months after the completion of study treatment.

12. Able to comply with protocol requirements and deemed fit for surgical resection, chemotherapy and CRT

Exclusion criteria

1. Distant metastatic disease
2. History of previous or concurrent malignancy diagnosis (except curatively treated basal cell carcinoma of skin or carcinoma in situ of cervix) in the last 3 years
3. Prior chemotherapy or CRT for pancreatic cancer
4. Known hypersensitivity for any component of any study drug
5. Active infection including Herpes Zoster and chickenpox
6. Uncontrolled congestive heart failure (CHF), or history of myocardial ischemia (MI), unstable angina, stroke, or transient ischemia within previous 6 months.
7. Serious medical or psychological condition precluding neo-adjuvant treatment and surgical resection
8. New York Heart Association Classification Grade III or IV
9. Liver cirrhosis (except for Child-Pugh A)
10. Major surgery within 28 days prior to trial entry
11. Any patients receiving treatment with brivudin, sorivudin and analogues or patients who have not stopped these drugs at least 4 weeks prior to the start of study treatment
12. Any patient with severe diarrhoea (defined as ≥grade 3 diarrhoea despite maximum supportive measures and exclusion of underlying infection)
13. Patients with known malabsorption
14. Patients with known or suspected dihydropyrimidine dehydrogenase (DPD) deficiency
15. Grade ≥ 2 peripheral neuropathy
16. Administration of any investigational drug within 28 days or 5 half-lives, whichever is longer, prior to receiving the first dose of trial treatment

Trial design

Primary purpose: Treatment

Allocation: Non-Randomized

Interventional model: Parallel Assignment

Masking: None (Open label)

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31 participants in 2 patient groups

FOLFOX-A

Experimental group

Description:

FOLFOX A arm (14-day cycle) * nab-paclitaxel: 150mg/m2 IV over 30 minutes, day 1 (administered first). * Oxaliplatin: 85mg/m2, IV over 2 hours, day 1. * Folinic acid: 350mg flat dose, IV over 2 hours, day 1. * Fluorouracil infusion:1200mg/m2/day, as a continuous IV infusion over 2 days, day 1 and day 2 (for a total dose of 2400mg/m2 over 46 hours or 48 hours as per local practice.) Patients will also receive daily G-CSF as primary prophylaxis against neutropenic events for all cycles. This should be given as per local policy for chemotherapy regimens given every 14 days e.g. it may be started on day 4 for 7 days (preparation and dose should be given as per local policy).

Treatment:

Drug: FOLFOX-A

Abraxane and Gemcitabine

Active Comparator group

Description:

Nab-Paclitaxel + Gemcitabine (AG) arm (28-day cycle) * nab-paclitaxel: 125mg/m2 IV over 30 minutes on days 1, 8 and 15 (administered first). * Gemcitabine 1000mg/m2 IV over 30 minutes on days 1, 8 and 15 (immediately following nab-paclitaxel).

Treatment:

Drug: AG