Independent directory Public ClinicalTrials.gov records United States
ClinicalTrials.gov record
Completed No phase listed Observational

AAV Gene Therapy Screening/Observational Protocol (ECLIPSE)

ClinicalTrials.gov ID: NCT04272554

Public ClinicalTrials.gov record NCT04272554. Field values are reproduced from the official study page; the official ClinicalTrials.gov record remains the source of truth for eligibility, enrollment, and contact information.

ClinicalTrials.gov public records Last synced Nov 5, 2026, 2:42 AM EST

All trial information on this site comes from the official ClinicalTrials.gov public API (clinicaltrials.gov/api/v2), run by the U.S. National Library of Medicine. We only display that public information; we do not add opinions, endorsements, or any other intent. Always review the official ClinicalTrials.gov record for the latest information.

Official title

Screening/Observational Protocol to Determine Patient Eligibility for Inclusion in AAV Gene Therapy Clinical Trials (ECLIPSE)

Brief summary

Reproduced verbatim from the official ClinicalTrials.gov record. Not medical advice.

Freeline is developing adeno-associated virus (AAV) vector based gene therapies for a number of diseases and is actively advancing a programme in Haemophilia B (HB). This study aims to collect prospective data to characterise bleeding events and Factor IX (FIX) concentrate consumption in HB patients that can be used as baseline for participants who elect to participate in a subsequent Freeline gene therapy study. The study will also screen participants for antibodies to a novel AAV vector to assess their suitability for inclusion in a Freeline gene therapy treatment study.

Study identification

NCT ID
NCT04272554
Recruitment status
Completed
Study type
Observational
Phase
Not listed
Lead sponsor
Spur Therapeutics
Industry
Enrollment
37 participants

Conditions and interventions

Eligibility (public fields only)

Age range
16 Years and older
Sex
Male
Healthy volunteers
Healthy volunteers not accepted

This page does not interpret eligibility. Detailed inclusion and exclusion criteria are on the official ClinicalTrials.gov record.

Study timeline

Start date
Feb 14, 2020 (Actual)
Primary completion
Oct 10, 2022 (Actual)
Completion
Oct 10, 2022 (Actual)
Last update posted
Nov 4, 2022

2020 – 2022

United States locations

U.S. sites
17
U.S. states
13
U.S. cities
17
Facility City State ZIP Site status
Phoenix Childrens Hospital Phoenix Arizona 85016 —
Children's Hospital of Los Angeles Los Angeles California 90027 —
University of California - Davis Sacramento California 95817 —
University of South Florida Tampa Florida 33612 —
Rush University Medical Center Chicago Illinois 60612 —
Indiana Hemophilia and Thrombosis Center Indianapolis Indiana 46260 —
University of Michigan Ann Arbor Michigan 48109 —
University of Nebraska Medical Center Omaha Nebraska 68198 —
Hemophilia Center of Western New York Buffalo New York 14209 —
University of North Carolina (UNC) Chapel Hill North Carolina 27599 —
East Carolina University Greenville North Carolina 27599 —
University Hospitals Cleveland Medical Center Cleveland Ohio 44106 —
Nationwide Childrens Hospital Columbus Ohio 43205 —
St. Jude Children's Research Hospital Memphis Tennessee 38105 —
Vanderbilt University Medical Center Nashville Tennessee 37212 —
Lombardi Comprehensive Cancer Center at Georgetown University Georgetown Washington 20057 —
Blood Center of Wisconsin Milwaukee Wisconsin 53226 —

Site contact phone numbers, emails, and investigator names are intentionally not displayed here. Open the official ClinicalTrials.gov record for site contact information.

Non-U.S. locations

This page focuses on the U.S. directory. The official record also lists 39 non-U.S. sites.

About this trial record page

What this page shows
Public field values for ClinicalTrials.gov record NCT04272554, including study identification, conditions, interventions, eligibility (age, sex, healthy volunteer), timeline, and U.S. site list.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, study quality scoring, or AI-generated medical summaries. No site contact phone numbers, emails, or investigator names.
Where the data comes from
Sourced from the official ClinicalTrials.gov public API. The official record is the source of truth.
Last refresh
Last update posted Nov 4, 2022 · Synced Nov 5, 2026

Related: full search, browse by condition, browse by drug or therapy, browse by sponsor, browse by U.S. city.

Open the official record

The complete public registry record, listed eligibility criteria, and available contact information for NCT04272554 live on ClinicalTrials.gov.

View official ClinicalTrials.gov record →