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NCT05022459Recruiting

Prevention of Bleeding in Patients With Moderate and Severe Hemophilia A Playing Sports: A Comparison Between Factor VIII and Emicizumab Prophylaxis

Prevention of Bleeding in Patients With Moderate and Severe Hemophilia A Playing Sports: A Comparison Between Factor VIII and Emicizumab Prophylaxis -STEP: SporTs Emicizumab Prophylaxis

Source: ClinicalTrials.gov · Last updated 2 Jul 2026

Brief summary (registry, in English)

Hemophilia A (HA) is a genetic bleeding disorder resulting from a deficiency or absence of factor VIII (FVIII), which is necessary in the clotting process. This disorder occurs mostly in males and in severe cases causes frequent bleeding episodes in joints and muscles which can lead to progressive damage that affects mobility and quality of life. Prophylactic FVIII administered intravenously every other day has been the standard of care treatment for HA for the past few decades. Sports and physical activity are generally encouraged in patients with hemophilia on appropriate prophylactic treatment to increase strength, prevent or decrease obesity, accrue and maintain bone density and encourage normal socialization. To ensure safety with participation in sports in persons with hemophilia A (PWHA), timing of FVIII administration is often adjusted to maximize FVIII at the time of sports. The exact factor level that is needed to safely participate in sports and minimize bleeding risk is not yet known. Based on clinical practice, infusion of FVIII to near the lower limit of normal right before participation in sports generally works to prevent bleeding. The study is looking at how well the newly approved medication Emicizumab works compared to Factor VIII to prevent bleeding in patients with Hemophilia A who play sports. The study will enroll children and adolescents who are already on Emicizumab or Factor VIII who are currently playing sports.

Status (registry)
Recruiting
Study type
Observational
Enrollment
72 (estimated)
First submitted
23 Aug 2021
Start date
16 Aug 2023
Primary completion date
Jan 2029
Lead sponsor
Wayne State University
Diseases
Haemophilia
NCT number
NCT05022459

What you commit to

  • Study type: Observational
  • Planned participants: 72
  • From 16 Aug 2023 to the primary completion date, Jan 2029
  • 10 sites in 1 country
  • Visits and tests: ask the trial team, the registry does not list them

Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.

Who cannot take part

Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.

Other illness

  • Participants with any other bleeding disorders will be excluded

Other

  • Participant/parent/LAR unwilling to provide informed consent/assent
  • Unwilling to log or document bleeds and treatment information as per study guidelines
  • Patients who are pregnant, planning to become pregnant, or breastfeeding should not be enrolled in the study
  • Participants on concomittent FVIII replacement and emicizumab for sports participation

Who the study is looking for

  • Participant (if 18 years of age or older) or parent/LAR is willing and able to provide written informed consent; minor participant is willing and able to provide assent, if applicable based on site and local regulations
  • Males and females between 6 to ≤ 19 years of age at time of enrollment with moderate to severe Hemophilia A (FVIII activity ≤ 5%) without inhibitors are eligible for participation in this study
  • Participants must be on Emicizumab or standard FVIII prophylaxis per institutional/primary hematologist recommendations
  • Participants must be engaging in or registered to start participating in one or more sports activities with moderate to high risk of bleeding as defined by the NHF- Playing it Safe guidelines (numerical rating \>/= 2).
  • Participant must be willing to keep activity, bleed, and treatment logs for the duration of the study

Age in the registry: 6 years to 19 years · Sex: All · Does not accept healthy volunteers

Full criteria on ClinicalTrials.gov

Sites (10)

Sites in registry order. Pick your city on the disease page to sort them by distance.

SiteCityCountrySite status
Boston Children's Hospital
Coordinator of this site? Confirm its status
BostonUnited StatesRecruiting
Rush University Children's Hospital
Coordinator of this site? Confirm its status
ChicagoUnited StatesRecruiting
Cincinnati Children's Hospital Medical Center
Coordinator of this site? Confirm its status
CincinnatiUnited StatesRecruiting
Children's Hospital of Michigan
Coordinator of this site? Confirm its status
DetroitUnited StatesRecruiting
Indiana Hemophilia & Thrombosis Center
Coordinator of this site? Confirm its status
IndianapolisUnited StatesRecruiting
Arkansas Children's Hospital
Coordinator of this site? Confirm its status
Little RockUnited StatesRecruiting
Oklahoma Center for Bleeding and Clotting Disorders
Coordinator of this site? Confirm its status
Oklahoma CityUnited StatesRecruiting
Stanford University
Coordinator of this site? Confirm its status
Palo AltoUnited StatesRecruiting
Rady Children's Hospital
Coordinator of this site? Confirm its status
San DiegoUnited StatesRecruiting
Johns Hopkins All Children's Hospital
Coordinator of this site? Confirm its status
St. PetersburgUnited StatesRecruiting

This page is information, not medical advice. Discuss any trial with your doctor.