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Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT02507583
Other study ID # 14G.96
Secondary ID
Status Completed
Phase Phase 1
First received
Last updated
Start date September 1, 2015
Est. completion date August 17, 2020

Study information

Verified date October 2020
Source Thomas Jefferson University
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

This human Phase 1 trial is a continuation of a Phase 1 trial which enrolled patients with recurrent gliomas (#TJU-14379-101) and which was designed after a previously conducted Phase 1 human trial at our institution. With certain modifications, it is intended to reproduce the safety results of the recurrent glioma previous trials as well as explore any objective clinical responses in newly diagnosed patients. Protocol 14379-101 is closed to accrual and Abbreviated Clinical Report is prepared for FDA submission. The safety profile for this protocol was quite favorable.

This treatment involves taking the patient's own tumor cells at surgery, treating them with an investigational new drug (an antisense molecule) designed to shut down a targeted surface receptor protein, and re-implanting the cells, now encapsulated in small diffusion chambers the size of a nickel in the patient's abdomen within 24 hours after the surgery. Loss of the surface receptor causes the tumor cells to die in a process called apoptosis. As the tumor cells die, they release small particles called exosomes, each full of tumor antigens. The investigators believe that these exosomes as well as the presence of the antisense molecule work together to activate the immune system against the tumor as they slowly diffuse out of the chamber. Immune cells are immediately available for activation outside of the chamber because a wound was created to implant these tumor cells and a foreign body (the chamber) is present in the wound. In this trial, a dose escalation of the therapeutic agent will involve an increase in both biodiffusion chamber number as well as the time the biodiffusion chambers remain implanted. The wound and the chamber fortify the initial immune response which eventually leads to the activation of immune system T cells that attack and eliminate the tumor. By training the immune system to recognize the tumor, the patient is also protected through immune surveillance from later tumor growth should the tumor recur. Compared to treatment alternatives for tumor recurrence, including a boost of further radiation and more chemotherapy, this treatment represents potentially greater benefit with fewer risks.


Description:

This trial will be an adaptation of Protocol 101 which recently closed after rapid and complete accrual, now with an escalation of the induction vaccination in four cohorts. For practical purposes, a standard dose-escalation study is not possible with the current paradigm. Although the investigators may have identified a distinct bioactive byproduct of Insulin-like growth factor receptor-1 Antisense Oligodeoxynucleotide (IGF-1R/AS ODN)-induced tumor cell apoptosis (exosomes), it is difficult to perform a dose escalation in a typical fashion. Also, antigen concentration can affect immune response in a biphasic manner: too little or too much can dampen an immune response, so even if the antigen or antigens were known, a typical pharmacologic dose escalation would not follow typical pharmacokinetics. For these reasons, in Protocol 102, 32 patients will have therapy at initial surgery followed by implantation of 20 chambers for a duration of 48 hours. There was a documented increase in tumor infiltrating lymphocytes after treatment in our original trial, this observation provided preliminary supporting evidence that this therapeutic vaccine will elicit an adaptive immune response. Protocol 102 has been designed to further elucidate an immune response with a quantitative assessment of tumor specific T cells as well as circulating M2 macrophages before and after treatment. The design of the Phase 1 trial will allow a statistical analysis of both antigen dose (number of chambers) and time of exposure (chamber dwell time) as either variable may relate to any toxicity or treatment response.

A summary of the treatment paradigm includes: Pre-operative plasma leukopheresis, then surgery with tissue harvest and implantation of 20 diffusion chambers in the rectus sheath with IGF-1R/AS ODN as previously reported within 24 hours of craniotomy, implanted for 48 hours. All patients who meet the eligibility criteria and agree to participate in this study will be potential candidates for therapy.


Recruitment information / eligibility

Status Completed
Enrollment 33
Est. completion date August 17, 2020
Est. primary completion date March 6, 2018
Accepts healthy volunteers No
Gender All
Age group 18 Years and older
Eligibility Inclusion Criteria:

- Documentation by MR of a gadolinium-enhancing intraparenchymal mass consistent with malignant glioma.

- Frozen section diagnosis of WHO Grade IV glioma, confirmed with permanent section and immunopositive for IGF-1R.

- An Eastern Cooperative Oncology Group (ECOG) performance status of 0, 1, or 2 or a Karnofsky Performance Score (KPS) of at least 60.

- Must be 18 years of age or older.

- Must sign an approved informed consent.

- Hemodynamically stable, consistent with Standard of Care values for patients undergoing elective tumor resection.

Exclusion Criteria:

- Females who are pregnant, nursing, or not inclined to use adequate contraceptive methods if necessary to prevent pregnancy during the study.

- An active second primary malignancy with the exception of basal cell or squamous cell skin carcinoma.

- Major concomitant medical illness inclusive of severe chronic obstructive pulmonary disease, multiple sclerosis, symptomatic coronary artery disease, heart failure, recent major cerebrovascular accident, brittle diabetes, renal dialysis, end stage liver disease, labile hypertension, or any autoimmune disorder.

- A history of heparin-induced thrombocytopenia or hypersensitivity to heparin, enoxaparin, or pork products.

- An abnormal International Normalized Ratio (INR) of greater than 1.3, if repeatable and refractory to correction by routine methods.

- Documented deep venous thrombosis

Study Design


Related Conditions & MeSH terms


Intervention

Drug:
IGF-1R/AS ODN; Surgery with tissue harvest and implantation 20 diffusion chambers in the rectus sheath with IGF-1R/AS ODN within 24 hours of craniotomy, implanted for 48 hours.


Locations

Country Name City State
United States Thomas Jefferson University Hospital Philadelphia Pennsylvania

Sponsors (1)

Lead Sponsor Collaborator
david andrews

Country where clinical trial is conducted

United States, 

References & Publications (1)

Andrews DW, Resnicoff M, Flanders AE, Kenyon L, Curtis M, Merli G, Baserga R, Iliakis G, Aiken RD. Results of a pilot study involving the use of an antisense oligodeoxynucleotide directed against the insulin-like growth factor type I receptor in malignant astrocytomas. J Clin Oncol. 2001 Apr 15;19(8):2189-200. — View Citation

Outcome

Type Measure Description Time frame Safety issue
Other Measurement of Immune response After the treatment, serial measurements of cytokines, chemokines, and peripheral blood mononuclear cells will be performed from obtained blood samples as outcome measurements of immune response. 36 months
Primary Collect adverse events as a measure of safety and tolerability of IG-1R/ AS ODN Adverse events and survival outcomes will be captured as a measure of safety and tolerability of IG-1R/AS ODN administered as a treatment 4 to 6 weeks before initiation of standard of care treatment. Blood (equivalent of 8 units of mononuclear cells by plasma leukopheresis) will be collected within 3 days of craniotomy and 7 tbsp of blood on days 14, 28, 42, 56, followed by every 3 months after vaccination to measure the degree of anti-glioma Cytotoxic T lymphoctye immunity achieved. 36 months
Secondary Document any T-1 weighted MRI-based radiographic responses to treatment. T-1 weighted abnormalities include: (1) size of the enhancing area utilizing the broadest unambiguous diameter in any orthogonal plane; (2) characteristics of the enhancement (e.g. progression from linearity to nodularity or regression from nodularity to linearity) and (3) intensity of enhancing area Evaluated 3 days pre surgery, and again at day 28, day 56, and then every 3 months up to 24 months.
Secondary Document any T-2 weighted MRI-based radiographic abnormalities or responses to treatment. T-2 weighted abnormalities include: (1) local mass effect; (2) size of T-2 weighted abnormality (e.g. edema, tumor, radiation change); (3) invasion of the deep white matter tracts; and (4) distal progression. Evaluated 3 days pre surgery, and again at day 28, day 56, and then every 3 months up to 24 months.
Secondary MRI measure of tumor response Each imaging characteristic will be rated as increased, decreased, or without change. Since distal progression including invasion of the contralateral hemisphere will either be present or absent, this criterion will be scored as either absent (stable) or present utilizing FLAIR sequence. Comparisons will be made between an MRI study performed within 48 hours of craniotomy documenting residual contrast-enhancing tumor. Evaluated 3 days pre surgery, and again at day 28, day 56, and then every 3 months up to 24 months.
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