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Recruiting

NCT Number: NCT06798298

A Safety and Efficacy Long-Term Follow-up Study of Adult Participants Treated With Gene Modified T Cells

This is a prospective study for the Long-Term Follow-Up (LTFU) of safety and efficacy of all participants exposed to gene modified (GM) T cell therapy in accordance with Health Authorities' guidance for participants treated with gene therapy products.

Participants who received at least one infusion of gene modified T cells in a 2seventy bio (prior to April 2024) or Regeneron Pharmaceuticals sponsored study will be asked to participate in this LTFU protocol, upon either premature discontinuation from, or completion of the parent treatment protocol.

Participants enrolled in this LTFU protocol will have safety assessments, laboratory evaluations, and complete patient-reported outcome (PRO) questionnaires at scheduled intervals as applicable.

Recruiting

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Key information

Age range

18 year and older

Sex eligibility

All sexes

Study type

Observational

Primary location

Tennessee Oncology

Nashville, Tennessee, 37203, United States

Location status: Recruiting

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • All participants who received at least one GM T cell infusion in a previous 2seventy bio (prior to April 2024) or Regeneron Pharmaceuticals sponsored study, and have completed the post-treatment follow-up period on the parent treatment protocol, or discontinued follow-up on the parent protocol after completing at least 6 months of safety monitoring, as applicable.
  • Participant (and legal representative, when applicable) must understand and voluntarily sign an Informed Consent Form (ICF)/Informed Assent Form (IAF) prior to any study related assessments/procedures being conducted.

Exclusion criteria

Not applicable.

Treatment and study plan

Non-Interventional

Genetic

No study drug administered. Long-term follow-up only.

Primary outcomes

  1. Incidence of delayed adverse events considered at least possibly related to prior gene modified T cell therapy

    Time frame: Up to 15 years

  2. Persistence of gene modified T cells

    Time frame: Up to 15 years

  3. Analysis of vector integration sites

    Time frame: Up to 15 years

  4. Incidence of RCL

    Time frame: Up to 15 years

  5. Disease progression status

    Time frame: Up to 15 years

    To assess long-term efficacy following treatment with gene modified T cells

  6. Date of disease progression

    Time frame: Up to 15 years

  7. Survival status

    Time frame: Up to 15 years

Secondary outcomes

  1. Health-Related Quality of Life (HRQoL) Changes

    Time frame: Up to 5 years

    Assessed using instruments administered in the parent treatment protocol

Study contacts

Contact information is provided by the study sponsor or research team.

Clinical Trials Administrator

CONTACT

[email protected]

844-734-6643

Sponsors and collaborators

Lead sponsor

Regeneron Pharmaceuticals

Industry

Registry information

Official study title

A Long-Term Follow-up Protocol for Participants Treated With Gene Modified T Cells

Important dates

Study start
2025
Primary completion
2040
Study completion
2040
First posted
Jan 29, 2025
Registry last updated
Jul 8, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.