A Screening Study Targeting Tumor-specific Antigens

NCT ID: NCT05158621

Last Updated: 2022-10-18

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

22 participants

Study Classification

OBSERVATIONAL

Study Start Date

2021-12-14

Study Completion Date

2022-08-15

Brief Summary

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The purpose of this study is to identify patients who may be eligible to participate in a separate Phase 2/3 treatment study evaluating an individualized neoantigen vaccine GRANITE for first line (1L) maintenance treatment of metastatic, microsatellite-sable colorectal cancer (MSS-CRC) sponsored by Gritstone bio. This may include the manufacturing of an individualized vaccine, which involves neoantigen prediction and generating a vaccine targeting neoantigens.

Detailed Description

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The screening study can enroll multiple tumor types in multiple treatment settings for the potential inclusion in a treatment study. Patient's tumors are analyzed to determine if the patient's tumor contains sufficient mutations. This screening study is currently enrolling patients with localized colon cancer or metastatic colorectal cancer for the development of an individualized neoantigen-based cancer vaccine that requires a manufacturing period for each patient.

The process of generating an individualized neoantigen cancer vaccine involves multiple steps, including collection of patient tumor and blood specimens, performing next-generation sequencing (NGS), predicting the neoantigens to be included in the individualized vaccine, and the manufacture and release of the individualized vaccine.

Study participants will not receive any investigational treatment as part of this trial. Patients screened in this study may be able to enroll in a separate investigational treatment study sponsored by Gritstone bio, provided that the patient meets the specified eligibility criteria for that treatment study.

Conditions

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Metastatic Colorectal Cancer Stage II/III Colon Cancer

Study Design

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Observational Model Type

CASE_ONLY

Study Time Perspective

PROSPECTIVE

Study Groups

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Advanced/Metastatic Colorectal Cancer

Eligible patients include those with newly-diagnosed or recurrent advanced/metastatic CRC who are initiating fluoropyrimidine and oxaliplatin (FOLFOX or CAPEOX) in combination with bevacizumab. Patients will then be assessed to determine if sufficient neoantigens are identified using Gritstone's proprietary prediction algorithm, EDGE(TM), to warrant manufacturing of an individualized vaccine. Patients with sufficient neoantigens will have vaccine manufactured while receiving FOLFOX or CAPEOX/bevacizumab.

blood collection for research (next generation sequencing [NGS])

Intervention Type PROCEDURE

participants will have whole blood collected for NGS

blood collection for research (HLA typing)

Intervention Type PROCEDURE

participants will have whole blood collected for HLA typing

Localized Colon Cancer

Eligible patients include those with high-risk Stage II or Stage III colon cancer who have MRD based on the presence of ctDNA following surgical resection. Patients with MRD will then be assessed to determine if sufficient neoantigens are identified using Gritstone's proprietary prediction algorithm, EDGE(TM), to warrant manufacturing of an individualized vaccine.

blood collection for research (next generation sequencing [NGS])

Intervention Type PROCEDURE

participants will have whole blood collected for NGS

blood collection for research (HLA typing)

Intervention Type PROCEDURE

participants will have whole blood collected for HLA typing

blood collection for research (circulating tumor DNA [ctDNA])

Intervention Type PROCEDURE

participants will have whole blood collected for ctDNA detection

Interventions

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blood collection for research (next generation sequencing [NGS])

participants will have whole blood collected for NGS

Intervention Type PROCEDURE

blood collection for research (HLA typing)

participants will have whole blood collected for HLA typing

Intervention Type PROCEDURE

blood collection for research (circulating tumor DNA [ctDNA])

participants will have whole blood collected for ctDNA detection

Intervention Type PROCEDURE

Eligibility Criteria

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Inclusion Criteria

* signed and dated ICF prior to initiation of study-specific procedures
* histologically confirmed metastatic CRC who are planned for or who have received no more than one cycle of first-line treatment in the advanced/metastatic setting with a fluoropyrimidine and oxaliplatin in combination with bevacizumab
* measurable and unresectable disease according to RECIST v1.1
* known KRAS status
* availability of FFPE tumor specimens from biopsy within the previous 12 months for sequencing and neoantigen prediction
* ≥ 12 years of age
* ECOG performance status of 0 or 1 or equivalent for patients of 12-17 years of age
* adequate organ function (further defined in protocol)


* signed and dated ICF prior to initiation of study-specific procedures
* high-risk stage II or stage III colon cancer planned for or have completed surgical resection and have not initiated or received more than 4 weeks of adjuvant chemotherapy and be known ctDNA-positive via the Signatera assay
* availability of FFPE tumor specimens for sequencing, determination of mutations for detecting and monitoring ctDNA to identify patients with minimal residual disease, and neoantigen prediction
* ≥ 12 years of age
* ECOG performance status of 0 or 1 or equivalent for patients of 12-17 years of age
* adequate organ function (further defined in protocol)

Exclusion Criteria

* known microsatellite instability (MSI)hi disease based on institutional standard
* known tumor mutation burden \<1 nonsynonymous mutations/MB
* patients with BRAF V600E mutations

LOCALIZED COLON CANCER


* known microsatellite instability (MSI)hi disease based on institutional standard
* known tumor mutation burden \<1 nonsynonymous mutations/MB
Minimum Eligible Age

12 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Gritstone bio, Inc.

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Miami Cancer Institute

Miami, Florida, United States

Site Status

Advanced Research

Tamarac, Florida, United States

Site Status

Astera Cancer Care

East Brunswick, New Jersey, United States

Site Status

The Christ Hospital

Cincinnati, Ohio, United States

Site Status

Sarah Cannon

Nashville, Tennessee, United States

Site Status

Virginia Cancer Specialists

Fairfax, Virginia, United States

Site Status

Countries

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United States

Other Identifiers

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GO-007

Identifier Type: -

Identifier Source: org_study_id

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