A Phase 1/2 Study to Evaluate TRX319 in Subjects with Progressive Multiple Sclerosis

UCI Specialty Area: Neurology

Principal Investigator: Michael Sy

Official Title: A Phase 1/2a, Open-Label, Dose-Escalation Study to Evaluate the Safety and Preliminary Efficacy of TRX319 in Subjects with Primary or Secondary Progressive Multiple Sclerosis

A Study On:

Multiple Sclerosis MS

Study Description

The goal of this clinical trial is to treat male and female participants with two types of Multiple Sclerosis (MS) called primary progressive or secondary progressive MS.

The main questions the trial aims to answer are the following:

Is TRX319 safe when administered to patients with progressive forms of MS?

At what dose does TRX319 work the best to treat participants with primary and or secondary progressive MS?

Is pre-conditioning (with Bendamustine) needed to allow TRX319 to better treat participants with primary and/or secondary progressive MS?

Participants will be asked to be on study for up 1 year and may receive up to 3 total administrations of TRX319. While on study, participants will have blood tests and other assessments (MRI scans and lumbar punctures) done to understand the safety of TRX319 and how it may benefit their multiple sclerosis.

Eligibility

Clinical Trials Search

Last Updated: 2026/10/20

Contact Our Study Team

OPEN TO ACCRUAL

Age Group: Adults

Sponsor: Tr1X, Inc

UCI Protocol ID: ASCC-25-15

ID: NCT07477639

Phase: I/II

Study Type: INT - Gene transfer/stem cell/recombinant DNA

Scope: National

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University of California, Irvine - Study Information Sheet

UCI Center for Clinical Research Potential Participant Database

Lead Researcher
Eric Vilain, MD, PhD
UCI Center for Clinical Research

In the instance of parental permission, “You” refers to “Your child.”

Please read the information below and ask questions about anything that you do not understand. A
researcher listed above will be available to answer your questions.

You are being asked to participate in a clinical research potential participant database to identify
potential clinical research studies you may be eligible for. Participation in this database is voluntary.
You may choose to skip any question. You may refuse to participate or discontinue your involvement
at any time without penalty or loss of benefits. You are free to withdraw from this database at any
time. If you decide to withdraw from this database you should notify the research team
immediately.

You are eligible to participate in this study if you may be interested in participating in a research trial at UCI Health

We would like to interview you to learn more about your eligibility for current clinical research studies at UCI. The interview will last about 5-30 minutes, depending on the extent of your medical history.

Possible risks/discomforts associated with the database are hearing about potential clinical research studies that may not be of interest to you, invasion of your privacy, or a potential breach of confidentiality.

There are no direct benefits from participation in the database. However, this database may help inform you on clinical research studies that you may be eligible for. Participation in UCI clinical research studies help us gain important data and knowledge that may lead to improved treatment options for people with similar conditions to you in the future.

There are no alternative procedures available. The only alternative is not to participate in this study.

There is no compensation for your participation in this database.

There is no cost to you for participation in this database.

All information collected will be stored confidentially in a world-class securely-hosted application, “RealTime CTMS,” with robust data protections and encryption. This application has HIPAA compliant architecture and application rules to ensure data privacy and regulatory compliance.

Researchers will use your information to assess your eligibility for current and future clinical research studies at UCI. You may opt out at any time.

The research team, authorized UCI personnel, and regulatory entities, may have access to your study records to protect your safety and welfare.

While the research team will make every effort to keep your personal information confidential, it is possible that an unauthorized person might see it. We cannot guarantee total privacy.

Future Research Use
Researchers will use your information to conduct this study. Once the study is done using your information, we may share them with other researchers so they can use them for other studies in the future. We will not share your name or any other private identifiable information that would let the researchers know who you are. We will not ask you for additional permission to share this de-identified information

Data Retention - In accordance with UC Office of the President policy, information will be retained for 10 years after the end of the calendar year in which the research is completed.

If, during the course of this study, significant new information becomes available that may relate to your willingness to continue to participate, this information will be provided to you by the research team listed at the top of the form.

If you have any comments, concerns, or questions regarding the conduct of this research please contact the researchers listed at the top of this form

Please contact the UCI Institutional Review Board by phone, (949) 824-8170, by e-mail at IRB@research.uci.edu or at 160 Aldrich Hall, Irvine, CA 92697-7600 if you are unable to reach the researchers listed at the top of the form and have general questions; have concerns or complaints about the research; have questions about your rights as a research subject; or have general comments or suggestions.

What is an IRB?

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