AdV-tk Therapy With Surgery and Chemoradiation for Pancreas Cancer (PaTK01)

NCT ID: NCT00638612

Last Updated: 2023-08-25

Basic Information

• Recruitment Status: COMPLETED
• Clinical Phase: PHASE1
• Total Enrollment: 27 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2008-08-31
• Study Completion Date: 2015-06-30

Brief Summary

The purpose of this Phase 1 study is to evaluate the safety and potential efficacy of Gene Mediated Cytotoxic Immunotherapy for pancreatic cancer. The approach uses an adenoviral vector (disabled virus) engineered to express the Herpes thymidine kinase gene (AdV-tk), followed by an antiherpetic prodrug, valacyclovir.

Detailed Description

The AdV-tk vector is injected into the tumor or tumor bed at the time of biopsy or standard tumor surgery after which valacyclovir pills are taken for 14 days. Two courses of AdV-tk, each followed by valacyclovir, are given as adjuvant to standard of care therapies (surgery and/or chemoradiation) which have been shown to work cooperatively with AdV-tk to kill tumor cells. Arm A is for resectable tumors in which the first course is given prior to surgery and the second is at the time of surgery. Arm B is for locally advanced disease in which both AdV-tk injections are administered by needle injection into the tumor before and during chemoradiation. The hypothesis is that this combination therapy can be safely delivered and will lead to improvement in the clinical outcome for patients with pancreatic cancer.

Conditions

Pancreatic Adenocarcinoma; Pancreatic Cancer

Study Design

• Allocation Method: NON_RANDOMIZED
• Intervention Model: SINGLE_GROUP
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

A resectable

Arm A is for resectable tumors. The first AdV-tk course is given prior to surgery by CT or EUS guided injection into the tumor followed by 14 days of valacyclovir. The second AdV-tk injection is into the tumor bed at the time of surgery again followed by 14 days of valacyclovir.

Group Type: EXPERIMENTAL

AdV-tk

Intervention Type: BIOLOGICAL

Four dose levels of AdV-tk with a fixed dose level of valacyclovir are evaluated independently in the two arms of the study due to differences in the concomitant standard of care treatments. The first AdV-tk course is given prior to surgery or radiation by CT or EUS guided injection into the tumor followed by 14 days of valacyclovir. The second AdV-tk injection is into the tumor bed at the time of surgery in Arm A or same as the first injection in Arm B again followed by 14 days of valacyclovir. The AdV-tk dose levels are: Level 1= 3x10e10 vector particles (vp), Level 2= 1x10e11 vp, Level 3= 3x10e11 vp, Level 4= 1x10e12 vp

Valacyclovir

Intervention Type: DRUG

Valacyclovir caplets at a dose of 2 grams orally three times per day is administered for 14 days starting 1-3 days after each of the two AdV-tk injections in both arms.

B locally advanced

Arm B is for locally advanced tumors for which chemoradiation is the planned standard of care treatment. AdV-tk is delivered by CT or EUS guided injection into the tumor. The first AdV-tk injection is given prior to starting chemoradiation and the second in week 3 of chemoradiation. Both injections are followed by 14 days of valacyclovir.

Enrollment has been completed for Arm B.

Group Type: EXPERIMENTAL

AdV-tk

Intervention Type: BIOLOGICAL

Four dose levels of AdV-tk with a fixed dose level of valacyclovir are evaluated independently in the two arms of the study due to differences in the concomitant standard of care treatments. The first AdV-tk course is given prior to surgery or radiation by CT or EUS guided injection into the tumor followed by 14 days of valacyclovir. The second AdV-tk injection is into the tumor bed at the time of surgery in Arm A or same as the first injection in Arm B again followed by 14 days of valacyclovir. The AdV-tk dose levels are: Level 1= 3x10e10 vector particles (vp), Level 2= 1x10e11 vp, Level 3= 3x10e11 vp, Level 4= 1x10e12 vp

Valacyclovir

Intervention Type: DRUG

Valacyclovir caplets at a dose of 2 grams orally three times per day is administered for 14 days starting 1-3 days after each of the two AdV-tk injections in both arms.

Interventions

AdV-tk

Four dose levels of AdV-tk with a fixed dose level of valacyclovir are evaluated independently in the two arms of the study due to differences in the concomitant standard of care treatments. The first AdV-tk course is given prior to surgery or radiation by CT or EUS guided injection into the tumor followed by 14 days of valacyclovir. The second AdV-tk injection is into the tumor bed at the time of surgery in Arm A or same as the first injection in Arm B again followed by 14 days of valacyclovir. The AdV-tk dose levels are: Level 1= 3x10e10 vector particles (vp), Level 2= 1x10e11 vp, Level 3= 3x10e11 vp, Level 4= 1x10e12 vp

Intervention Type: BIOLOGICAL

Valacyclovir

Valacyclovir caplets at a dose of 2 grams orally three times per day is administered for 14 days starting 1-3 days after each of the two AdV-tk injections in both arms.

Intervention Type: DRUG

Other Intervention Names

Valtrex

Eligibility Criteria

Inclusion Criteria

• Must have presumed pancreatic adenocarcinoma based on clinical and radiologic evaluation with identifiable tumor accessible for injection (pathologic diagnosis of pancreatic adenocarcinoma must be made prior to AdV-tk injection
• For Arm A, resectable disease. Arm B for locally advanced disease has completed accrual.
• Performance status must be ECOG 0-2
• SGOT (AST)<3x upper limit of normal
• Serum creatinine<2mg/dl and calculated creatinine clearance >10ml/min
• Platelets>100,000/mm3 and WBC>3000/mm3 and ANC>1500/mm3
• Must give study specific informed consent prior to enrollment

Exclusion Criteria

• Primary hepatic dysfunction including active hepatitis but not to exclude patients due to obstructive jaundice. If obstructive jaundice is clinically significant, bilirubin should be stable or decreasing prior to enrollment.
• Evidence of clinically significant pancreatitis as determined by the investigator.
• Patients on corticosteroids or other immunosuppressive drugs
• Known HIV+ patients
• Patients with acute infections (viral, bacterial or fungal infections requiring therapy)
• Pregnant or breast-feeding patients. Female patients of childbearing age must have negative serum or urine pregnancy test within 1 week of beginning therapy
• Evidence of distant metastatic disease at the time of enrollment or other malignancy (except squamous or basal cell skin cancers) and no prior abdominal radiation therapy or prior treatment for pancreatic cancer
• Other serious co-morbid illness or compromised organ function

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

Candel Therapeutics, Inc.

INDUSTRY

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Principal Investigators

Mark Bloomston, MD

Role: PRINCIPAL_INVESTIGATOR

Ohio State University

Locations

City of Hope Medical Center

Duarte, California, United States

Scripps Green Hospital/Scripps Cancer Center

La Jolla, California, United States

The Ohio State University

Columbus, Ohio, United States

Countries

United States

References

Aguilar LK, Shirley LA, Chung VM, Marsh CL, Walker J, Coyle W, Marx H, Bekaii-Saab T, Lesinski GB, Swanson B, Sanchez D, Manzanera AG, Aguilar-Cordova E, Bloomston M. Gene-mediated cytotoxic immunotherapy as adjuvant to surgery or chemoradiation for pancreatic adenocarcinoma. Cancer Immunol Immunother. 2015 Jun;64(6):727-36. doi: 10.1007/s00262-015-1679-3. Epub 2015 Mar 21.

Reference Type: RESULT

PMID: 25795132 (View on PubMed)

Other Identifiers

PaTK01

Identifier Type: -

Identifier Source: org_study_id