Engineered T cells directed at tumors with defined allelic loss.
Agnes E Hamburger, Breanna DiAndreth, Jiajia Cui...
https://pubmed.ncbi.nlm.nih.gov/33012527/Actively Recruiting
Led by A2 Biotherapeutics Inc. · Updated on 2026-06-02
200
Participants Needed
16
Research Sites
17 weeks
Total Duration
Researchers are studying how often solid tumor cancers lose a protein called Human Leukocyte Antigen HLA by using next generation sequencing. The study focuses on participants with solid tumors who have a high risk of relapse and incurable disease. This observational study does not provide treatment but collects important information that may help in managing participants disease and preparing for future therapy options. Participants will first be screened for their HLA type and tumor characteristics through next generation sequencing of archived tumor tissue. Those with specific tumor changes involving HLA loss will undergo a procedure called apheresis to collect their white blood cells, mainly T cells. These collected cells will be stored for potential use in manufacturing CAR T-cell therapy if their cancer relapses. The study includes screening, enrollment for apheresis, a safety follow-up a week later, and a two-year long-term follow-up. During the study, participants will provide tumor samples and blood for testing and cell collection. Researchers will monitor how many participants qualify for future CAR T-cell therapy studies and how often HLA loss occurs in tumors. They will also watch for any adverse events related to the apheresis procedure within seven days. Follow-up will continue for up to two years to observe participants outcomes and safety.
CONDITIONS
Solid Tumor Analysis for HLA Loss of Heterozygosity (LOH) and Apheresis for CAR T- Cell Manufacturing
C
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A2 Biotherapeutics Inc.
Lead Sponsor
Tempus AI
Collaborating Sponsor
You may qualify if you...
You will not qualify if you...
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 visit (in-person) for HLA typing and eligibility assessment
Duration - Up to 2 years
Participants who pass screening have their archived tumor tissue tested by next generation sequencing (NGS) to assess tumor markers and loss of heterozygosity (LOH).
Follow-up visits for tumor tissue testing and monitoring as needed
Duration - Single procedure
Participants identified with LOH on their tumors undergo apheresis to collect peripheral blood mononuclear cells (PBMCs) for CAR T-cell therapy manufacturing.
1 visit (in-person) for apheresis procedure
Duration - 7 days
Participants are monitored for safety following the apheresis procedure.
1 follow-up visit (in-person) approximately 7 days after apheresis
Duration - Up to 2 years
Participants are followed for up to 2 years to observe outcomes related to tumor progression and CAR T-cell therapy preparation.
Periodic follow-up visits for up to 2 years
Study Type
OBSERVATIONAL
Masking
N/A
Allocation
N/A
Model
N/A
Primary Purpose
N/A
Number of Arms
0
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https://pubmed.ncbi.nlm.nih.gov/33532112/A2 Biotherapeutics Inc.
Lead Sponsor
Tempus AI
Collaborating Sponsor