Prophylaxis Versus On-demand Therapy Through Economic Report (POTTER)

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: NCT01159587
Recruitment Status : Completed
First Posted : July 9, 2010
Last Update Posted : April 13, 2011
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Brief Summary:

The project is a controlled observational, multicenter, prospective data collection on secondary prophylaxis with Kogenate Bayer in adolescents and adults with severe haemophilia A (FVIII < 1%).

The observational period will cover at least 5 years per patient.

The long-term secondary prophylaxis group will be compared versus on-demand treatment group by the assessment of orthopedic status progression and pharmacoeconomics evaluation.

Condition or disease Intervention/treatment
Hemophilia A Drug: Recombinant Factor VIII (Kogenate FS, BAY14-2222)

Study Type : Observational
Actual Enrollment : 58 participants
Observational Model: Cohort
Time Perspective: Prospective
Official Title: Observational Study Evaluating Efficacy and Costs of Secondary Prophylaxis vs On-demand Therapy With Kogenate Bayer in Patients With Severe Haemophilia A. POTTER
Study Start Date : July 2004
Actual Primary Completion Date : December 2010
Actual Study Completion Date : December 2010

Group/Cohort Intervention/treatment
Group 1 Drug: Recombinant Factor VIII (Kogenate FS, BAY14-2222)
Long-term secondary prophylaxis with product administered 20-30 UI /kg three times weekly

Group 2 Drug: Recombinant Factor VIII (Kogenate FS, BAY14-2222)
On-demand treatment with product given only for bleeding episodes

Primary Outcome Measures :
  1. Evaluate the efficacy, safety and pharmacoeconomic of long-term secondary prophylaxis with Kogenate Bayer in comparison to on-demand treatment with Kogenate Bayer in terms of joint bleeding episodes per year [ Time Frame: Every 6 months ]

Secondary Outcome Measures :
  1. Efficacy, safety, pharmacoeconomic impact of secondary prophylaxis versus on demand group in terms of overall bleeding episodes [ Time Frame: Every 6 months ]
  2. Muscolo skeletal evaluation by Orthopedic Joint Score [ Time Frame: Every 12 months ]
  3. Radiological Evaluation by Pettersson Score [ Time Frame: Baseline and after 3-5 years ]
  4. Health related quality of life [ Time Frame: Every 12 months ]
  5. cost-effectiveness and utility, patient compliance, adverse events [ Time Frame: Every 6 months ]

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Ages Eligible for Study:   12 Years to 55 Years   (Child, Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Probability Sample
Study Population

Inclusion Criteria:

  • age ≥ 12 years and ≤ 55 years
  • severe haemophilia A (FVIII < 1%)
  • absence of inhibitors (Bethesda titre < 0.6 BU/ml)
  • Previous Treated Patients (prior exposure days > 200)
  • Kogenate Bayer administered 20-30 IU/kg -3 times a week, for the prophylaxis group
  • ≥ 6 joint bleeds requiring treatment with FVIII concentrates in the previous 6 months before enrollment, for on-demand group
  • written informed consent

Exclusion Criteria:

  • concomitant severe and chronic diseases or congenital skeletal malformation
  • unreliability of patient or likelihood of follow-up failure
  • presence of inhibitors or history of inhibitors (in the previous 2 years)
  • currently on immune tolerance treatment
  • hepatic cirrhosis or liver disease in rapid progression
  • AIDS
  • platelet count < 75,000/mm3
  • presence of conditions that influence negatively patient´s compliance
  • participation in another study

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): NCT01159587

Many Locations, Italy
Sponsors and Collaborators
Study Director: Bayer Study Director Bayer

Additional Information:
Publications automatically indexed to this study by Identifier (NCT Number):
Responsible Party: Medical Director, Bayser Schering Pharma AG Identifier: NCT01159587     History of Changes
Other Study ID Numbers: 11856
First Posted: July 9, 2010    Key Record Dates
Last Update Posted: April 13, 2011
Last Verified: April 2011

Additional relevant MeSH terms:
Hemophilia A
Blood Coagulation Disorders, Inherited
Blood Coagulation Disorders
Hematologic Diseases
Coagulation Protein Disorders
Hemorrhagic Disorders
Genetic Diseases, Inborn
Factor VIII