Gene Editing's lasting impact: a 10-Year safety watch

NCT ID NCT04628871

First seen Aug 13, 2026 · Last updated Aug 14, 2026 · Updated 1 time

Summary

This study checks on people who previously received gene editing for hemophilia B or mucopolysaccharidosis (MPS) I or II. No new treatment is given; instead, participants are monitored for up to 10 years to see if any new health problems or worsening of existing conditions appear. The goal is to understand the long-term safety of these one-time gene therapies.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance
No new treatment is given; this is a long-term follow-up of people who previously received gene editing (SB-318, SB-913, or SB-FIX).
What this could lead to
If this follow-up shows the gene editing remains safe over many years, it could support the use of these one-time treatments for hemophilia B and certain metabolic disorders.
What could go wrong
This is a small, observational follow-up, not a new treatment test. It cannot prove the gene editing works, and long-term safety issues may still emerge.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Locations

  • Ann & Robert H. Lurie Children's Hospital of Chicago

    Chicago, Illinois, 60611, United States

  • Cincinnati Children's Hospital Medical Center

    Cincinnati, Ohio, 45229, United States

  • New York University Grossman School of Medicine

    New York, New York, 10016, United States

  • UCSF Benioff Children's Hospital Oakland

    Oakland, California, 94609, United States

  • University of North Carolina

    Chapel Hill, North Carolina, 27514, United States

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