CI

At a glance

ClinicalIndex Comparison Record
Phase 3Completed· 212 enrolled
Drug / intervention
Standard of Care FIX Replacement therapy +1 moredrug
Likely dose
Not stated in record
Structured eligibility isn't available for this trial yet — see the full criteria in the Eligibility tab below.

Standardized by ClinicalIndex from the ClinicalTrials.gov record · verify against the source.

Search/NCT03587116
NCT03587116Phase 3Completed

AN OPEN-LABEL, NON-INVESTIGATIONAL PRODUCT, LEAD-IN STUDY TO EVALUATE AT LEAST 6 MONTHS OF PROSPECTIVE EFFICACY AND SAFETY DATA OF FACTOR IX OR FACTOR VIII PROPHYLAXIS REPLACEMENT THERAPY IN THE USUAL CARE SETTING OF MODERATELY SEVERE TO SEVERE ADULT HEMOPHILIA B SUBJECTS (FIX:C≤2%) WHO ARE NEGATIVE FOR nAb TO AAV VECTOR-SPARK100 AND MODERATELY SEVERE TO SEVERE HEMOPHILIA A ADULT SUBJECTS (FVIII:C≤1%) WHO ARE NEGATIVE FOR nAb TO AAV VECTOR SB-525 CAPSID (AAV6), PRIOR TO THE RESPECTIVE THERAPEUTIC PH 3 GENE THERAPY STUDIES (See Detailed Description Section for Official Protocol Title)

Pfizer·interventional·Posted Jul 16, 2018·Updated Nov 6, 2025

In Brief

A Phase 3 clinical trial evaluating Standard of Care FIX Replacement therapy and Standard of Care FVIII Replacement therapy for Hemophilia B and Hemophilia A. Completed, enrolled 212 participants across 75 sites in 18 countries.

Detailed Summary

To establish baseline prospective efficacy data of current FIX prophylaxis replacement therapy in the usual care setting of hemophilia B subjects, who are negative for nAb to AAV-Spark100, prior to the Phase 3 gene therapy study. To establish baseline prospective efficacy data of current FVIII prophylaxis replacement therapy in the usual care setting of hemophilia A subjects, who are negative for nAb to AAV6, prior to the Phase 3 gene therapy study. The enrollment for hemophilia A participants is completed. At this time participants are only being enrolled for hemophilia B cohort.

Study Details

Study Typeinterventional
Allocation--
Masking--
Primary Purpose--
CountriesAustralia, Belgium, Brazil, Canada, France, Germany, Greece, Israel, Italy, Japan, Saudi Arabia, South Korea, Spain, Sweden, Taiwan, Turkey (Türkiye), United Kingdom, United States
Collaborators--

Timeline

Phase 3CompletedFinished
20192020202120222023202420252026
First PostedJul 16, 2018
Enrollment StartJul 26, 2018
Primary CompletionDec 13, 2024
TodayJul 2, 2026
Enrollment to primary: 6.4 yearsPosted 8.0 years ago

Interventions

Standard of Care FIX Replacement therapydrug

There is no investigational product being administered. Subjects will be administering their own standard of care FIX replacement therapy.

Standard of Care FVIII Replacement therapydrug

There is no investigational product being administered. Subjects will be administering their own standard of care FVIII replacement therapy.