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Von Willebrand DiseasesPhase 3NCT04052698

Clinical Study to Investigate the Efficacy and Safety of Wilate During Prophylaxis in Previously Treated Patients With VWD

A Phase 3 study testing Wilate in people with Von Willebrand Diseases, run by Octapharma at 14 sites in 8 countries.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This is a prospective, non-controlled, international, multi-center phase 3 study investigating the efficacy and safety of Wilate in previously treated adult patients with VWD, to obtain additional data on the safety and efficacy of Wilate in previously treated patients with VWD undergoing regular prophylaxis. Read more about this study

Who is it for?
Ages 6 years and older
Conditions the study is for
Von Willebrand Diseases
What is being tested?
Wilate
Type of treatment
Injection or infusion
Could I receive a placebo?
No, everyone receives an active treatment
How many people
43 participants
Where
14 sitesin 8 countries
Study dates
18 Jun 2020to 23 Apr 2022
Phase
Phase 3
Are there results?
Yes, posted in the registrySummary in the doctors' view

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 6 years and older
  • All sexes
  • No healthy volunteers
  • Child, Adult, Older adult

Who may be able to join

  • Patients who meet all of the following criteria are eligible for the study:
  • Aged ≥6 years at the time of screening
  • VWD type 1 (baseline von Willebrand factor activity [VWF:Ristocetin Co-factor (RCo)] <30 IU/dL, 2A, 2B, 2M, or 3 according to medical history requiring substitution therapy with a VWF-containing product to control bleeding
  • Currently receiving on-demand treatment with a VWF-containing product with at least 1, and an average of ≥2, documented spontaneous BEs per month in the last 6 months, with at least 2 of these BEs requiring treatment with a VWF-containing product
  • Availability of records to reliably evaluate type, frequency, and treatment of BEs for at least 6 months of on-demand treatment before screening
  • Female patients of child-bearing potential must have a negative urine pregnancy test at screening and agree to use adequate birth control measures; in case hormonal contra-ception is used, the medication class should remain unchanged for the duration of the study
  • All patients to provide voluntarily given, fully informed written and signed consent obtained before any study-related procedures are conducted

Who cannot join

  • Patients who meet any of the following criteria are not eligible for the study:
  • Having received on-demand or prophylactic treatment with a VWF-containing product but having no records available to reliably evaluate the type, frequency, and treatment of BEs over a period of at least 6 months of on-demand treatment
  • History, or current suspicion, of VWF or FVIII inhibitors
  • Medical history of a thromboembolic event within 1 year before enrolment
  • Severe liver or kidney diseases (alanine aminotransferase [ALAT] and aspartate trans-aminase [ASAT] levels >5 times of upper limit of normal, creatinine >120 µmol/L)
  • Platelet count <100,000/µL at screening (except for VWD type 2B)
Show all 13Show fewer
  • Body weight <20 kg at screening
  • Patients receiving, or scheduled to receive, immunosuppressant drugs (other than an-tiretroviral chemotherapy), such as prednisone (equivalent to >10 mg/day), or similar drugs
  • Pregnant or breast-feeding at the time of enrolment
  • Cervical or uterine conditions causing abnormal uterine bleeding (including infection, dysplasia)
  • Treatment with any IMP in another interventional clinical study currently or within 4 weeks before enrolment
  • Other coagulation disorders or bleeding disorders due to anatomical reasons
  • Known hypersensitivity to any of the components of the study drug

Trial locations and contacts

14 sites in 8 countries.

14 sites in 8 countries

Lebanon3 sites
  • Hotel Dieu de France Hospital

    Beirut, BP166830

  • American University of Beirut Medical Center

    Beirut

  • Nini Hospital

    Tripoli

Other trials in Lebanon

Bulgaria2 sites
  • "Specialized Hospital for Active Treatment of Haematological Diseases" EAD, Sofia

    Sofia

  • Pediatric Clinic of Haematology and Oncology

    Varna, 9010

Other trials in Bulgaria

Hungary2 sites
  • Medical Centre Hungarian Defence Forces

    Budapest, 1134

  • Debreceni Egyetem Klinikai Központ, Regionális Haemophilia és Thrombophilia Központ

    Debrecen, 4032

Other trials in Hungary

Russia2 sites
  • Federal State Budgetary Scientific Institution Kirov Scientific-Research Institute of Hematology and Blood Transfusion of Federal

    Kirov, 610027

  • Morosovskaya Children Clinical Hospital, Moscow Health Department, Department of General Hematology with the Pathology of Hemostasis

    Moscow, 119049

Other trials in Russia

Ukraine2 sites
  • State Institution "National Children's Specialized Hospital "OKHMATDYT" of the Ministry of Health of Ukraine," Center of Hemostasis Pathology

    Kyiv, 01135

  • Communal Nonprofit Enterprise "Western Ukrainian Specialized Children's Medical Center"of Lviv Regional Council

    Lviv, 79035

Other trials in Ukraine

United States1 site
  • Children's Healthcare of Atlanta

    Atlanta, Georgia, 30329

Other trials in United States

Belarus1 site
  • Republican Research Center for Radiation Medicine and Human Ecology

    Homyel, 290

Other trials in Belarus

Croatia1 site
  • University Hospital Centre Zagreb

    Zagreb, 10000

Other trials in Croatia

About this study

Official title: Clinical Study to Investigate the Efficacy and Safety of Wilate During Prophylaxis in Previously Treated Patients With Von Willebrand Disease (VWD)

This is a prospective, non-controlled, international, multi-center phase 3 study investigating the efficacy and safety of Wilate in previously treated adult patients with VWD, to obtain additional data on the safety and efficacy of Wilate in previously treated patients with VWD undergoing regular prophylaxis.

Being tested
Wilate
Medical subject headings
von Willebrand Diseases

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • WilateDrug

    Also called von Willebrand factor / Factor VIII (plasma derived)

    Produced from the plasma of human donors, Wilate is presented as a powder or solvent for intravenous injection containing normally 500 IU or 1000 IU human VWF and human FVIII per vial. The ratio between VWF ristocetin co-factor activity (VWF:RCo) and FVIII:C is 1:1. The product contains approximately 100 IU/ml human VWF when reconstituted with 5ml/10mL water for injection with 0.1% polysorbate 80.

    The specific activity of Wilate is ≥67 IU VWF:RCo/mg protein. The injection or infusion rate should not exceed 2-3mL per minute.

Study groups in NCT04052698
Study groupRoleWhat they receive
All patientsExperimentalPatients with type 3, type 2 (except 2N), or severe type 1 VWD aged ≥6 years at screening receiving Wilate for prophylactic treatment.
Receives: Drug: Wilate

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Total Annualized Bleeding Rate (TABR)

    The TABR was calculated as the total number of spontaneous bleeds, traumatic bleeds, and other bleeds (except menstrual bleeds) occurring in the time period between first dose of the investigational medicinal product (IMP) and the Study Completion Visit, divided by the duration (in years) between first dose of IMP and the Study Completion Visit.

    Measured: 12 months

  2. Comparison of Total Annualized Bleeding Rates (TABR) During Prophylaxis Treatment in Study WIL-31 to On-demand Treatment in the Same Patient Population in the Preceding Study WIL-29

    Estimated TABR number calculated using a negative binomial counting regression model. Comparison between this number calculated for studies WIL-29 (NCT04053699) and WIL-31. For the comparison of results from WIL-31 to WIL-29 an estimated total annualized bleeding rate was calculated for each cohort, and compared with a negative binomial counting model. As these were estimated rates, there is only one value for each cohort with no measure of spread

    Measured: 12 Months

Secondary outcomes (7)
  1. Spontaneous Annualized Bleeding Rate (SABR)

    Spontaneous annualized bleeding rate (SABR) calculated in analogy with TABR

    Measured: 12 months

  2. Comparison of Spontaneous Annualized Bleeding Rates (SABR) During Prophylaxis Treatment in Study WIL-31 to On-demand Treatment in the Same Patient Population in the Preceding Study WIL-29.

    Estimated SABR number calculated using a negative binomial counting regression model. Comparison between this number calculated for studies WIL-29 (NCT04053699) and WIL-31. For the comparison of results from WIL-31 to WIL-29 an estimated total annualized bleeding rate was calculated for each cohort, and compared with a negative binomial counting model. As these were estimated rates, there is only one value for each cohort with no measure of spread

    Measured: 12 Months

  3. Wilate Consumption for Prophylaxis (mFAS Population)

    Data on the consumption of Wilate (VWF/FVIII IU/kg per month and per week per patient) for prophylactic treatment

    Measured: 12 months

  4. Incremental In Vivo Recovery (IVR) of Von Willebrand Factor Activity (VWF:RCo)

    Incremental VWF:RCo IVR of Wilate over time (at baseline and at 1, 2, 3, 6, 9, and 12 months of treatment)

    Measured: From baseline and 12-month visit

  5. Incremental In Vivo Recovery (IVR) of FVIII

    FVIII:C of Wilate in pediatric patients (at baseline PK visit) measured by chromogenic assay

    Measured: Baseline and 12-month visit

  6. Efficacy of Wilate in the Treatment of Breakthrough Bleeding Events (BEs)

    Treatment efficacy will be assessed at the end of a BE by the patient using predefined criteria of 'Excellent', 'Good', 'Moderate' or 'None'. All effectiveness ratings assessed as either "excellent" or "good" will be considered "successfully treated".

    Measured: 12 months

  7. Wilate Exposure for Prophylaxis (mFAS Population)

    Data on the exposure days of Wilate prophylactic treatment

    Measured: 12 months

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted12 Aug 2019
  2. Study start18 Jun 2020
  3. Primary completion23 Apr 2022
  4. Study completion23 Apr 2022

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Interventional
Phase
Phase 3
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrolment
43 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT04052698
Sponsor's protocol ID
WIL-31
Status last verified
Sep 2023
First submitted
9 Aug 2019
Last updated
25 Oct 2023
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
Undecided

Publications

  • Bodo I, Eikenboom J, Montgomery R, Patzke J, Schneppenheim R, Di Paola J; von Willebrand factor Subcommittee of the Standardization and Scientific Committee of the International Society for Thrombosis and Haemostasis. Platelet-dependent von Willebrand factor activity. Nomenclature and methodology: communication from the SSC of the ISTH. J Thromb Haemost. 2015 Jul;13(7):1345-50. doi: 10.1111/jth.12964. Epub 2015 May 9. No abstract available.

    PubMed 25858564
  • Sadler JE. A revised classification of von Willebrand disease. For the Subcommittee on von Willebrand Factor of the Scientific and Standardization Committee of the International Society on Thrombosis and Haemostasis. Thromb Haemost. 1994 Apr;71(4):520-5.

    PubMed 8052974
  • Rodeghiero F, Castaman G, Tosetto A. How I treat von Willebrand disease. Blood. 2009 Aug 6;114(6):1158-65. doi: 10.1182/blood-2009-01-153296. Epub 2009 May 27.

    PubMed 19474451
  • Castaman G, Goodeve A, Eikenboom J; European Group on von Willebrand Disease. Principles of care for the diagnosis and treatment of von Willebrand disease. Haematologica. 2013 May;98(5):667-74. doi: 10.3324/haematol.2012.077263.

    PubMed 23633542
  • U. S. Department of Health and Human Services. Health Measures. Available at http://www.healthmeasures.net/explore-measurement-systems/promis.

  • Cella D, Yount S, Rothrock N, Gershon R, Cook K, Reeve B, Ader D, Fries JF, Bruce B, Rose M; PROMIS Cooperative Group. The Patient-Reported Outcomes Measurement Information System (PROMIS): progress of an NIH Roadmap cooperative group during its first two years. Med Care. 2007 May;45(5 Suppl 1):S3-S11. doi: 10.1097/01.mlr.0000258615.42478.55.

    PubMed 17443116
  • Hays RD, Spritzer KL, Schalet BD, Cella D. PROMIS(R)-29 v2.0 profile physical and mental health summary scores. Qual Life Res. 2018 Jul;27(7):1885-1891. doi: 10.1007/s11136-018-1842-3. Epub 2018 Mar 22.

    PubMed 29569016
  • Maruish M. User's manual for the SF-36v2 Health Survey (3rd edition). Optum Incorporated; 2011.

  • Saris-Baglama, R,DeRosa, M, Raczek, A, Bjorner, J,Turner-Bowker, D, Ware, J. The SF-10™ Health Survey for Children: A User's Guide. QualityMetric Incorporated; 2007.

  • Feldman BM, Funk SM, Bergstrom BM, Zourikian N, Hilliard P, van der Net J, Engelbert R, Petrini P, van den Berg HM, Manco-Johnson MJ, Rivard GE, Abad A, Blanchette VS. Validation of a new pediatric joint scoring system from the International Hemophilia Prophylaxis Study Group: validity of the hemophilia joint health score. Arthritis Care Res (Hoboken). 2011 Feb;63(2):223-30. doi: 10.1002/acr.20353.

    PubMed 20862683
  • van Galen KPM, Timmer MA, de Kleijn P, Fischer K, Foppen W, Schutgens REG, Eikenboom J, Meijer K, Cnossen MH, Fijnvandraat K, van der Bom JG, Laros-van Gorkom BAP, Leebeek FWG, Mauser-Bunschoten EP, Win Study Group OBOT. Joint assessment in von Willebrand disease. Validation of the Haemophilia Joint Health score and Haemophilia Activities List. Thromb Haemost. 2017 Aug 1;117(8):1465-1470. doi: 10.1160/TH16-12-0967. Epub 2017 May 11.

    PubMed 28492695
  • Janssen CA, Scholten PC, Heintz AP. A simple visual assessment technique to discriminate between menorrhagia and normal menstrual blood loss. Obstet Gynecol. 1995 Jun;85(6):977-82. doi: 10.1016/0029-7844(95)00062-V.

    PubMed 7770270
  • Higham JM, O'Brien PM, Shaw RW. Assessment of menstrual blood loss using a pictorial chart. Br J Obstet Gynaecol. 1990 Aug;97(8):734-9. doi: 10.1111/j.1471-0528.1990.tb16249.x.

    PubMed 2400752
  • Djambas Khayat C, Dubey L, Inati A, Lissitchkov T, Novik D, Peteva E, Sidonio RF Jr, Taher AT, Vilchevska KV, Vdovin V, Boban A. Efficacy and Safety of Prophylaxis With a Plasma-Derived von Willebrand Factor/Factor VIII Concentrate (Wilate) in Patients With Type 3 von Willebrand Disease-A WIL-31 Study Sub-Analysis. Eur J Haematol. 2026 May;116(5):674-681. doi: 10.1111/ejh.70117. Epub 2026 Jan 30.

    PubMed 41614378
  • Sidonio RF Jr, Boban A, Lissitchkov T, Nemes L, Vdovin V, Khayat CD. Individualizing dosing frequency may improve the efficacy of prophylaxis in patients with von Willebrand disease-a WIL-31 subanalysis. Res Pract Thromb Haemost. 2025 Oct 10;9(7):103221. doi: 10.1016/j.rpth.2025.103221. eCollection 2025 Oct.

    PubMed 41278463

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Wilate in people with Von Willebrand Diseases, run by Octapharma at 14 sites in 8 countries.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 7 inclusion and 13 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 25 Oct 2023. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 14 sites in Lebanon, Bulgaria, Hungary, Russia, Ukraine and 3 more countries. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

What does this phase mean?

Phase 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 25 Oct 2023). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Total Annualized Bleeding Rate (TABR) (time frame: 12 months). The study lists 2 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT04052698, which also lists 16 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 25 Oct 2023.

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