MedTrace Logo

Safety Study of Adenovirus/PNP Coupled With Fludarabine Phosphate to Treat Solid Tumors

NCT01310179 · Status: COMPLETED · Phase: PHASE1 · Type: INTERVENTIONAL · Enrollment: 12

Last updated 2015-06-10

Study results available
· View outcomes & findings →

Summary

This study will test whether it is possible to introduce new genetic material into a small portion of a tumor and have the product of the new gene not only kill those tumor cells that were infected initially, but also the surrounding tumor cells as well with limited or no harm to the patient. The desired effects of this approach are achieved by focusing potent chemotherapies directly within the tumor itself and, as a result, avoiding injury to the remainder of the body. In this study, we will use two components, the first of which is a virus, known as an adenovirus, that has been crippled (i.e., it cannot make more of itself) and loaded with a bacterial gene called E. coli purine nucleoside phosphorylase (PNP). Adenoviruses are considered to be relatively safe vehicles for gene delivery and are presently being used in numerous human trials and therapies worldwide, including a head and neck cancer therapy approved for use outside the United States. The loaded adenovirus will be used to deliver the PNP gene directly into a tumor in patients. This gene is not expected to have an effect itself. However, the gene produces PNP inside the tumor and this protein will activate the second component of the therapy, a drug called fludarabine phosphate, which is approved by the FDA for certain types of blood-cell cancers, but has not been shown to be effective against most solid tumors. The proposed therapy gives the patient several infusions of fludarabine following the injection of the virus carrying the PNP gene and, as the fludarabine enters the tumor, it will be converted by PNP into a second compound, fluoroadenine. Numerous studies in mice and rats have shown that fluoroadenine is a very potent anti-cancer agent and that it will kill the tumor cells where it is made as well as those in the immediately surrounding area.

Conditions

Interventions

GENETIC

Ad/PNP and fludarabine monophosphate

Subjects in the first 3 cohorts will receive 3x10e11 VP for 3 injections and escalating dose levels of F-araAMP (15, 45, and 75 mg/m2 in each sequential cohort) daily for 3 days. The fourth cohort will receive 3x10e12 for 3 injections and 75 mg/m2 fludarabine daily for 3 days.

Sponsors & Collaborators

  • PNP Therapeutics, Inc.

    lead INDUSTRY

Principal Investigators

  • Eben Rosenthal, MD · University of Alabama at Birmingham

Study Design

Allocation
NA
Purpose
TREATMENT
Masking
NONE
Model
SINGLE_GROUP

Eligibility

Min Age
19 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2011-02-28
Primary Completion
2014-06-30
Completion
2014-07-31

Countries

  • United States

Study Locations

More Related Trials

Entities

Diseases

Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT01310179 on ClinicalTrials.gov