Needs Assessment of Knowledge, Beliefs, and Attitudes of Patients With Hemophilia B About Gene Therapy

November 13, 2025 updated by: St. Jude Children's Research Hospital

Needs Assessment of Knowledge, Beliefs, and Attitudes of Patients With Hemophilia B About Gene Therapy Globally

Gene therapy is a paradigm-shifting treatment for hemophilia B patients, particularly in resource-limited countries where factor availability remains low. Transparent and culturally sensitive communication around gene therapy is vital to the success of a high-quality consenting process. Current literature on knowledge, beliefs and attitudes about gene therapy in resource-limited countries is inadequate. In addition, few educational resources to explain basic gene therapy concepts exist in languages other than English. This study aims to address these gaps in knowledge and aid for the development of educational resources to assist the informed consent processes for gene therapy in resource-limited countries.

Primary Objective:

To assess baseline knowledge, beliefs, and attitudes about gene therapy held by hemophilia B patients globally

Secondary Objectives:

  1. To explore healthcare workers' (i.e., physicians, nurses, social workers, educators/academic coordinators) perspectives regarding the education needs of hemophilia B patients globally
  2. To explore healthcare workers beliefs and attitudes about gene therapy
  3. To identify preferences of patients with hemophilia B and their healthcare workers on how/by what method or pathway educational content should be provided.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

This prospective cohort study will use qualitative methods, specifically semi structured interviews to evaluate knowledge, beliefs, and attitude about gene therapy in patients 12 years and older with a diagnosis of moderate and severe hemophilia B (≤2% FIX activity only), caregivers/parents and healthcare workers who care for them at St. Jude and other global countries. Participants will be interviewed virtually using an online video-conferencing platform, phone or in person.

Interviews will be performed by experienced qualitative interviewers in the official language of each participating site. Interviews will last approximately 45-60 minutes and will be performed only once. All interviews will be audio recorded and obtained information will be analyzed using semantic content analysis to identify common themes.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
150

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Contact Backup

Study Locations

  • Nepal
      • Kathmandu, Nepal
        • Civil Service Hospital
  • Peru
      • Lima, Peru
        • Hospital Dos De Mayo
  • Sri Lanka
      • Colombo, Sri Lanka, 01000
        • National Hospital of Sri Lanka
  • Thailand
      • Bangkok, Thailand, 10400
        • Ramathibodi Hospital
  • United States
    • Tennessee
      • Memphis, Tennessee, United States, 38105
        • St. Jude Children's Research Hospital
  • Vietnam
      • Hanoi, Vietnam
        • National Institute of Hematology and Blood Transfusion

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

12 years and older (Child, Adult, Older Adult)

Accepts Healthy Volunteers

N/A

Sampling Method

Non-Probability Sample

Study Population

Participants who meet the eligibility criteria

Description

Inclusion Criteria:

  • Patients ≥12 years of age
  • Diagnosis of moderate (FIX ≥1% and ≤2%) or severe (<1%) hemophilia B
  • Parents or caregivers to patients with hemophilia 12-17 years of age

Inclusion Criteria - Healthcare worker:

- Doctors, nurses, social workers, pharmacists and educators who participate in the care of hemophilia B patients

Exclusion Criteria:

  • Diagnosis of Hemophilia A
  • Diagnosis of other non-Hemophilia B bleeding disorders

Exclusion Criteria - Healthcare worker:

  • Health care workers who do not participate in the care of hemophilia B patients
  • Healthcare worker who is conducting the interviews

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Cohort
  • Time Perspectives: Prospective

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Hemophilia B patients
Patients ≥12 years of age with a diagnosis of moderate (FIX ≥1% and ≤2%) or severe (<1%) hemophilia B
Behavioral: Interview
Semi structured interview will be conducted virtually using an online video-conferencing platform, phone or in person.
Other Names:
  • Questions
Parents or Caregivers
Parents or caregivers to patients with hemophilia 12-17 years of age
Behavioral: Interview
Semi structured interview will be conducted virtually using an online video-conferencing platform, phone or in person.
Other Names:
  • Questions
Healthcare Workers
Doctors, nurses, social workers, pharmacists and educators who participate in the care of hemophilia B patients
Behavioral: Interview
Semi structured interview will be conducted virtually using an online video-conferencing platform, phone or in person.
Other Names:
  • Questions

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Use of semi-structured interviews to qualitatively describe their attitudes, beliefs, and knowledge of gene therapy in hemophilia B
Time Frame: Day 1, or at a future visit (up to approximately 1 year)
Semi-structured interviews will be performed in patients with hemophilia B, their caregivers and healthcare workers to qualitatively describe their attitudes, beliefs, and knowledge of gene therapy in hemophilia B including concerns, expectations, and best way to receive information about gene therapy. Interviews will be audio recorded, transcribed verbatim and analyzed using semantic content analysis to identify common themes.
Day 1, or at a future visit (up to approximately 1 year)

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
St. Jude Children's Research Hospital

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Nidhi Bhatt, MD, St. Jude Children's Research Hospital

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

Helpful Links

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
January 18, 2022

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
October 14, 2025

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
October 14, 2025

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
September 9, 2021

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
September 9, 2021

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
September 16, 2021

Study Record Updates

Last Update Posted (Estimated)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
November 14, 2025

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
November 13, 2025

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
November 1, 2025

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • BINFORMED

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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