Glypican 3-specific Chimeric Antigen Receptor Expressed in T Cells for Patients With Pediatric Solid Tumors (GAP)

Summary

This study enrolls patients who have GPC3-positive solid tumors currently. Patients may be considered if the cancer has come back, has not gone away after standard treatment or the patient cannot receive standard treatment. This research study uses special immune system cells called GAP T cells, a new experimental treatment.

The body has different ways of fighting infection and disease. No single way seems perfect for fighting cancers. This research study combines two different ways of fighting cancer: antibodies and T cells. Antibodies are types of proteins that protect the body from infectious diseases and possibly cancer. T cells, also called T lymphocytes, are special infection-fighting blood cells that can kill other cells, including cells infected with viruses and tumor cells. Both antibodies and T cells have been used to treat patients with cancers. They have shown promise, but have not been strong enough to cure most patients.

Investigators have found from previous research that they can put a new gene into T cells that will make them recognize cancer cells and kill them. In preclinical studies, the investigators made several genes called a chimeric antigen receptor (CAR), from an antibody called GC33 that recognizes glypican-3, a proteoglycan found on solid tumors including pediatric liver cancers (GPC3-CAR). This study will test T cells genetically engineered with a GPC3-CAR (GAP T cells) in patients with GPC3-positive solid tumors (currently only enrolling liver tumors).

The GAP T cells are an investigational product not approved by the Food and Drug Administration.

The purpose of this study is to find the biggest dose of GAP T cells that is safe, to see how long they last in the body, to learn what the side effects are and to see if the GAP T cells will help people with GPC3-positive solid tumors. This study enrolls patients who have GPC3-positive solid tumors (currently only enrolling liver tumors).

Conditions

• Liver Cancer

Interventions

GENETIC

GAP T cells

Five different dosing schedules will be evaluated. Three to six patients will be evaluated on each dosing schedule. The following dose levels will be evaluated: DL1: 1x10\^7/m2 DL2: 3x10\^7/m2 DL3: 1x10\^8/m2 DL4: 3x10\^8/m2 DL5: 1x10\^9/m2 The doses are calculated according to the actual number of GPC3-CAR transduced T cells.

DRUG

Cytoxan

Cyclophosphamide will be given at a dose of 500 mg/m2/day for 3 days given intravenously.

DRUG

Fludara

Fludarabine will be given at a dose of 30 mg/m2/day for 3 days given intravenously.

Sponsors & Collaborators

• Center for Cell and Gene Therapy, Baylor College of Medicine

  collaborator OTHER

• Cancer Prevention Research Institute of Texas

  collaborator OTHER

• The V Foundation

  collaborator OTHER

• Cookies for Kids' Cancer

  collaborator OTHER

• Curing Kids' Cancer Foundation

  collaborator OTHER

• Baylor College of Medicine

  lead OTHER

Principal Investigators

• David Steffin, M.D. · Baylor College of Medicine

Study Design

Allocation

NA

Purpose

TREATMENT

Masking

NONE

Model

SINGLE_GROUP

Eligibility

Min Age

1 Year

Max Age

21 Years

Sex

ALL

Healthy Volunteers

No

Timeline & Regulatory

Start

2018-12-17

Primary Completion

2021-09-27

Completion

2037-02-28

FDA Drug

Yes

Countries

• United States

Study Locations