The main aim of this study is to learn about changes in the lowest blood levels of Factor VIII in men and boys when upgraded from standard prophylaxis with Advate to individualized prophylaxis with Advate. No study medicines will be provided to participants in this study. The study sponsor will not be involved in how participants are treated but will provide instructions on how the clinics will record what happens during the study. Participants will need to visit the study doctor 3 times in total during the study. During these visits, study data will be collected by the study doctor.
Local, Multicenter, Non-interventional, Ambispective Study in Severe Hemophilia A Patients on Standard and PK-tailored Prophylaxis With Octocog Alfa (Advate®) in the Russian Federation
Study Type
OBSERVATIONAL
Enrollment
94
City Children's Hospital No. 1
Kazan', Tatarstan Republic, Russia
Chelyabinsk Regional Children's Clinical Hospital
Chelyabinsk, Russia
Children's Regional Clinical Hospital
Khabarovsk, Russia
Krasnoyarsk Regional Clinical Center for Maternal and Child Health
Krasnoyarsk, Russia
Morozovskaya Children's City Clinical Hospital of the Department of Healthcare of the city of Moscow
Moscow, Russia
State Budgetary Institution of Healthcare "Republican children's clinical hospital" of the Ministry of Health of the Kabardino-Balkar Republic
Nal'chik, Russia
State Novosibirsk Regional Clinical Hospital
Novosibirsk, Russia
Regional Children's Clinical Hospital
Rostov-on-Don, Russia
City Polyclinic No. 37
Saint Petersburg, Russia
Regional Children's Clinical Hospital No. 1
Vladivostok, Russia
...and 3 more locations
Time per Week Spent With Factor VIII (FVIII) Trough Level Below 1 Percent (%) on the Standard Prophylaxis and After Pharmacokinetic (PK) -tailored Prophylaxis
PK-tailoring prophylaxis is defined as FVIII replacement prophylactic therapy based on PK parameters of each particular participant. Time per week spent with Through FVIII level below 1% on standard and PK-tailored prophylaxis will be reported.
Time frame: From 12 months prior to study enrollment up to Visit 3 (Month 12)
Percentage of Participants With More Than 19 Hours per Week Spent With FVIII Trough Level Below 1% on Standard Prophylaxis Versus on PK-tailored Prophylaxis
Percentage of participants with more than 19 hours per week with FVIII trough level below 1% on standard and PK-tailored prophylaxis will be reported.
Time frame: From 12 months prior to study enrollment up to Visit 3 (Month 12)
Percentage of Participants With Upgraded Dosing Regimen Based on PK-assessment
Upgraded dosing regimen includes dose upgrade, dosing intervals modification, and/or FVIII trough level upgrade to above 1%. Percentage of participants with upgraded dosing regimen based on PK-assessment will be reported.
Time frame: Baseline up to Visit 3 (Month 12)
Percentage of Time per Week Spent With FVIII Trough Level Below 1%, 1 to less than (<) 3%, and Greater Than or Equal to (>=) 3% While on Standard and Individualized Prophylaxis
Individualized prophylaxis is defined as prophylactic therapy based on PK parameters of each individual participant. Percentage of time per week spent with FVIII through level below 1%, 1- \<3%, and \>=3% while on standard and individualized prophylaxis will be reported.
Time frame: From 12 months prior to study enrollment up to Visit 3 (Month 12)
Percentage of Participants With FVIII Trough Level Permanently Above 1% on Standard Prophylaxis vs on PK-tailored Prophylaxis
Percentage of participants with FVIII trough level permanently above 1% on standard and PK-tailored prophylaxis will be reported.
Time frame: From 12 months prior to study enrollment up to Visit 3 (Month 12)
Correlation Between the Time per Week Spent With FVIII Trough Level Below 1% and Spontaneous Annualized Bleeding Rate (ABR) on Standard Prophylaxis
Correlation between the time per week spent with FVIII trough level below 1% and spontaneous ABR on standard prophylaxis will be assessed using Pearson's correlation coefficient.
Time frame: From 12 months prior to study enrollment up to Visit 3 (Month 12)
Correlation Between the Time per Week Spent With FVIII Trough Level Below 1% and Spontaneous Annualized Joint Bleeding Rate (AJBR) on Standard Prophylaxis
Correlation between the time per week spent with FVIII trough level below 1% and spontaneous AJBR on standard prophylaxis will be assessed using Pearson's correlation coefficient.
Time frame: From 12 months prior to study enrollment up to Visit 3 (Month 12)
Total Consumption of FVIII Before and After PK-tailored Prophylaxis in Participants With Upgraded Dosing Regimen
Total consumption of FVIII before and after PK-tailored prophylaxis in participants with upgraded dosing regimen will be reported.
Time frame: From 12 months prior to study enrollment up to Visit 3 (Month 12)
Percentage of Participants With Positive Dynamics of Body Status After Transfer From Standard to Individualized Prophylaxis
Positive dynamics of body status is related with increased physical activity (change in body mass index \[BMI\], waist: hip ratio \[WHR\]. Percentage of participants with positive dynamics of body status after transfer from standard to individualized prophylaxis will be reported.
Time frame: Baseline up to Visit 3 (Month 12)
Percentage of Participants Categorized Based on Number of Hospitalizations due to Insufficient Bleeding Control Before and After PK-tailored Prophylaxis
Percentage of participants categorized based on number of hospitalization due to insufficient bleeding control before and after PK-tailored Prophylaxis will be reported.
Time frame: From 12 months prior to study enrollment up to Visit 3 (Month 12)
Percentage of Participants Categorized Based on Number of Days Away From Work and School/Institute Due to Insufficient Bleeding Control Before and After PK-tailored Prophylaxis
Percentage of participants categorized based on number of days away from work and school/institute due to insufficient bleeding control before and after PK-tailored prophylaxis will be reported.
Time frame: From 12 months prior to study enrollment up to Visit 3 (Month 12)
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