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Trial record 1 of 1 for:    NCT03619863
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ATHN 7: Hemophilia Natural History Study (ATHN 7)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT03619863
Recruitment Status : Active, not recruiting
First Posted : August 8, 2018
Last Update Posted : May 16, 2022
Genentech, Inc.
Information provided by (Responsible Party):
American Thrombosis and Hemostasis Network

Brief Summary:
This is a real-world study of the safety of the treatments used for people with hemophilia. The study will follow people with hemophilia A or B from across the country for about 4 years as they receive treatment. The hemophilia treatment center (HTC) physician and participant will decide on the FDA-approved treatment to be used which may include non-factor products, bypassing agents, or clotting factor replacement products. The goal of this research is to study the use of hemophilia treatment products and their outcomes.

Condition or disease
Hemophilia A With Inhibitor Haemophilia A Without Inhibitor Hemophilia B With Inhibitor Haemophilia B Without Inhibitor

Detailed Description:

This non-interventional, minimal risk cohort study will enroll and follow patients with hemophilia A or B as they receive hemophilia treatment for 4 years. This is a pragmatic study of real-world practices across a wide range of patients which will be ongoing as new treatment products receive FDA approval and will be advantageous to the entire hemophilia community. The total study duration is planned for 6 years.

The patients are seen at baseline, annually, and at study exit. Patients will also receive routine quarterly follow-up phone calls from HTC staff to review medical history, bleed events, and product treatment history. Other visits for unplanned events or for the change of treatment product will be scheduled as necessary. All required study visits will be planned to coincide with routine clinical care whenever possible. Co-enrollment in the ATHNdataset by patients is required to participate in the study.

Please note - the treatment regimen will be at the discretion of the patients' hemophilia caregivers. No treatment products are being provided by the study nor will the participants be paid. However, inhibitor titer testing will be provided at no cost to patients by the Center for Disease Control and Prevention (CDC).

The primary objective is to determine the safety of non-factor products, bypassing agents or clotting factor replacement products when used for people with hemophilia with or without inhibitors. Safety will be measured by those events listed in the European Haemophilia Safety Surveillance (EUHASS).

Data collected will include eligibility, demographics, medical history, hemophilia history (genotype and family history), inhibitor history and immune tolerance induction (ITI) treatment regimen (if applicable), co-morbidities at baseline (i.e., HIV, Hepatitis C), detailed treatment product(s) usage, bleeding events, surgical procedures, and EUHASS adverse events and other adverse events of special interest. Data collection will also include patient-reported outcome questionnaires regarding health-related quality of life, treatment use and patient perceptions of treatment products.


A number of sub-studies are planned with pharmaceutical sponsors to collect information from patients about their specific product use. Participation in these sub-studies (Product Specific Modules) is optional and sub-study visits will be planned to coincide with HTC visits. The modules will collect information from patients about their perception and use of treatment products, physical activity levels and other general health questions. This data will be collected via questionnaire.

Data Collection System

All data collected will be entered into electronic case report forms (eCRFs) within the secure ATHN System by HTC site personnel. All participating study sites will have in place a current, executed Data Use and Business Associate Agreement (DUBAA) with ATHN.

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Study Type : Observational [Patient Registry]
Actual Enrollment : 395 participants
Observational Model: Cohort
Time Perspective: Prospective
Target Follow-Up Duration: 4 Years
Official Title: A Natural History Cohort Study of the Safety, Effectiveness, and Practice of Treatment for People With Hemophilia
Actual Study Start Date : October 24, 2018
Estimated Primary Completion Date : September 2023
Estimated Study Completion Date : December 2023

Resource links provided by the National Library of Medicine

Primary Outcome Measures :
  1. Safety of treatment products used for hemophilia care will be assessed based on the number of reportable European Haemophilia Safety Surveillance (EUHASS) events documented on the ATHN Adverse Event Module Form. [ Time Frame: 6 years ]
    All treatment-related reportable adverse events will be documented on the ATHN Adverse Event Module Form based on EUHASS reportable events which include: death, factor inhibitor development, venous thrombosis, allergic reactions, treatment-emergent side effects, new malignancies, cardiovascular events, and blood-borne infections. Other treatment-related events to be documented on the ATHN Adverse Event Module Form including thrombotic microangiopathies, injection site reactions, drug-induced liver injury and anti-drug antibodies.

Secondary Outcome Measures :
  1. Effectiveness of non-factor products, bypassing agents and clotting factor replacement products will be evaluated based on the participant's number of bleeding events reported as the annualized bleeding rate (ABR). [ Time Frame: 6 years ]
    Annualized bleeding rates (bleeds/year) are calculated as the number of bleeding events divided by length of time of the treatment regimen, in years. Participants will report bleeding including spontaneous bleeding, traumatic bleeding, joint related and non-joint bleeding during routine quarterly follow-up with hemophilia care providers. Participants will also have blood loss associated with surgical procedures documented through medical chart review as noted by the surgical care providers. All bleeding data will be gathered and reported.

  2. Dosing regimens for hemophilia treatment products and total amount utilized by the study participant for prophylaxis and treatment of bleeds will be assessed. [ Time Frame: 6 years ]
    The routine quarterly contact by hemophilia care providers with study participants will be used to evaluate their treatment use and will document dosing regimens of hemophilia treatment products, amount of product used, number of participants switching to a different product, number of participants switching between factor and non-factor products, and/or number of participants staying on the current treatment product and the reason for their choice of treatment.

  3. Target joint monitoring [ Time Frame: 6 years ]

    The number and location of target joints at study entry, incidence of target joint development while on study, and the number of target joints that resolve following study enrollment will be documented and analyzed.

    The number and location of target joints at study entry, incidence of target joint development while on study, and the number of target joints that resolve following study enrollment will be documented and analyzed.

  4. Efficacy of treatment is rated by health-related outcomes tools: EQ-5D-5L, Patient-Reported Outcomes Measurement Information System (PROMIS), Global Adherence Rating (GAR), and Treatment Satisfaction with Medicines Questionnaire (SATMED-Q). [ Time Frame: 6 years ]
    EuroQol Group's EQ-5D-5L assesses mobility, self-care, usual activities, pain/discomfort, and anxiety/depression. Opinions in the 5 categories can be stated as a health profile or converted to a single summary index number. Opinion on overall health is on a scale of 0 to 100 with 100 as best health imagined. PROMIS Profile 29 (adults)/ 25 (peds)/ Parent Proxy 25 assess physical function, anxiety, depression, fatigue, sleep disturbance, ability to participate in social roles/activities, and pain. Questions are ranked on a 5-point Likert Scale and one question on pain has a 11-point rating scale. GAR assesses adherence to the prescribed regimen on a scale of 0 to 10 with 10 always taken as prescribed. SATMED-Q assesses the satisfaction with the prescribed treatment based on a Likert scale and provides a total score for treatment satisfaction by summing all domains: side effects, efficacy, convenience and ease of use, impact of the medicine, medical follow-up/review and overall opinion.

  5. Real world effectiveness of treatment products assessed by the healthcare providers as measure by the number and types of medical visits and/or hospitalizations per year. [ Time Frame: 6 years ]
    Healthcare providers will document the number and types of medical visits/hospitalization per year that are related to hemophilia care and treatment.

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   Child, Adult, Older Adult
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
The study will enroll approximately 280 patients with hemophilia who meet the eligibility criteria and receiving care from one of the ATHN-affiliated Hemophilia Treatment Centers (HTC).

Inclusion Criteria:

  1. Congenital hemophilia A or B of any severity with or without inhibitors receiving a current therapy, a non-factor product, or for whom use of a non-factor product is a possibility;
  2. Able to give informed consent (by patient or parent/authorized guardian); and
  3. Co-enrollment in the ATHNdataset.

Exclusion Criteria:

  1. Presence of any known bleeding disorder other than congenital hemophilia A or B;
  2. Presence of concurrent hemophilia and a second hemostatic defect (low Von Willebrand Factor (VWF) without Von Willebrand disease (VWD) diagnosis is not excluded); and
  3. Unable or unwilling to comply with the study protocol.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT03619863

Show Show 29 study locations
Sponsors and Collaborators
American Thrombosis and Hemostasis Network
Genentech, Inc.
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Principal Investigator: Tyler Buckner, MD, MSc Hemophilia and Thrombosis Center/ University of Colorado Anschutz Medical Campus
Principal Investigator: Michael Recht, MD, PhD The Hemophilia Center at Oregon Health & Science University
Additional Information:

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Responsible Party: American Thrombosis and Hemostasis Network Identifier: NCT03619863    
Other Study ID Numbers: ATHN 7
First Posted: August 8, 2018    Key Record Dates
Last Update Posted: May 16, 2022
Last Verified: May 2022

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by American Thrombosis and Hemostasis Network:
Non-Factor Products
Bypassing Agents
Clotting Factor Replacement Products
Additional relevant MeSH terms:
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Hemophilia A
Hemophilia B
Blood Coagulation Disorders, Inherited
Blood Coagulation Disorders
Hematologic Diseases
Coagulation Protein Disorders
Hemorrhagic Disorders
Genetic Diseases, Inborn
Genetic Diseases, X-Linked