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Active, not recruitingNCT05506254Updated Feb 5, 2026

Long-term Follow-up Study of Patients Who Received hLB-001 Gene Therapy

An observational study in Methylmalonic Acidemia, sponsored by Alexion Pharmaceuticals, Inc.. Active, not recruiting at 4 sites in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-02-05.

Sponsored by Alexion Pharmaceuticals, Inc. · Observational

Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
4
Ages
18 Years and older
Sex
All
01

Study summary

This is a non-interventional long-term follow-up study of patients who have participated in LogicBio studies for the treatment of MMA and received hLB-001

Read the detailed description

Patients will be followed for a period of 15 years which includes the duration of time that the patient was in the treatment study.

02

Conditions studied

  • Methylmalonic Acidemia
03

In context

Lead sponsor

Alexion Pharmaceuticals, Inc. is the lead sponsor of 249 studies on the registry; 25 are open to participants now.

Of its 98 completed or terminated interventional studies of FDA-regulated products, 70 (71%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

This is a non-interventional long-term follow-up study of participants who have participated in LogicBio studies for the treatment of MMA and received hLB-001.

Inclusion criteria

  • Participant has previously participated in a LogicBio clinical trial and received hLB-001.

Exclusion criteria

Exclusion Criteria:

  • None
05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
4 participants (actual)
Patient registry
No

Groups and cohorts

  • Patients who have previously received hLB-001

    Drug: hLB-001

Interventions

  • DrughLB-001

    hLB-001 gene therapy

06

What researchers measure

Primary outcomes

  1. Incidence of treatment emergent adverse events

    Time frame: 15 years

07

Study locations

4 sites
  • Clinical Trial Site
    Atlanta, Georgia 30322, United States
  • Clinical Trial Site
    Pittsburgh, Pennsylvania 15224, United States
  • Clinical Trial Site
    Nashville, Tennessee 37232, United States
  • Clinical Trial Site
    Seattle, Washington 98105, United States
08

References and documents

Individual participant data

Plan to share: Undecided

No publications or documents are linked to this record.

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 5, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05506254
Lead sponsor
Alexion Pharmaceuticals, Inc.
Responsible party
Sponsor
First posted
Aug 18, 2022
Start date
Jul 15, 2022
Primary completion
Jan 1, 2037 (estimated)
Completion
Jan 1, 2037 (estimated)
Last update
Feb 5, 2026

Oversight

Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is active, not recruiting, as verified in Feb 2026. You cannot join it, but the record below documents what was studied.

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