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Long-Term Follow-Up of Subjects Treated With Seattle Children's Therapeutics Gene Therapy Products

Long-Term Follow-Up of Subjects Treated With Seattle Children's Therapeutics Gene Therapy Products

Status
Recruiting
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT07424157
Acronym
LTFU-01
Enrollment
500
Registered
2026-02-20
Start date
2026-06-15
Completion date
2041-03-31
Last updated
2026-06-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

CAR T Cell, CAR T Cell Therapy

Brief summary

Subjects exposed to gene therapy products (GTPs) may be at risk for delayed or long-term adverse events. This is a long-term follow-up (LTFU) protocol designed to evaluate the long-term safety of Seattle Children's Therapeutics (SCTx) GTPs and incorporates in monitoring guidance from the U.S. Food and Drug Administration (FDA). Subjects will be followed for up to 15 years starting from the date of the most recent infusion of an SCTx GTP. Subjects planning to receive, or who have received, at least one infusion of an SCTx GTP will be offered participation in this LTFU study. Subjects enrolled in this study will have safety assessments and laboratory evaluations performed at scheduled intervals for each unique SCTx GTP received. No treatment is administered in this LTFU study.

Interventions

OTHERLong term follow up in all patients who received an SCTx gene therapy product

Participants will be followed for 15 years following the receipt of their final infusion on a separate SCTx gene therapy protocol to monitor for the long term effects of CAR T cell therapy

Sponsors

Seattle Children's Hospital
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Healthy volunteers
No

Inclusion criteria

1. Enrolled in an SCTx GTP clinical trial; 2. Received or planned to receive an SCTx GTP; 3. Subject and/or legally authorized representative have provided consent/assent for study participation.

Design outcomes

Primary

MeasureTime frameDescription
Incidence of delayed adverse events15 years post-final infusion of SCTx GTPThe type, frequency, severity, and duration of adverse events considered related to the SCTx gene therapy product (GTP) the participant received.
Long-term persistence of SCTx Gene Therapy Products15 years post-final infusionMonitor for long-term persistence of SCTx GTPs.
Long-term clinical outcomes following treatment with SCTx GTP15 years post-final infusionDeath from any cause and first relapse following an initial remission

Countries

United States

Contacts

CONTACTAdam Lamble
CBDCIntake@seattlechildrens.org206-987-2106

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Jun 26, 2026