Study of Coagulation Factor VIIa Marzeptacog Alfa (Activated) in Subjects With Hemophilia A or B

December 2, 2021 updated by: Catalyst Biosciences

Phase 3 Study to Evaluate the Efficacy and Safety of Subcutaneous Marzeptacog Alfa (Activated) For On Demand Treatment and Control of Bleeding Episodes in Subjects With Hemophilia A or Hemophilia B, With Inhibitors: The Crimson 1 Study

The purpose of the trial is to evaluate the safety and efficacy of MarzAA for on-demand treatment and control of bleeding episodes in hemophilia A or B patients with inhibitors compared with their standard of care (SOC).

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Terminated

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
18

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Phase 3

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Armenia
      • Yerevan, Armenia
        • Hematology Center after Prof. R. Yeolyan
  • Georgia
      • Tbilisi, Georgia
        • JSC "K.Eristavi National Center of Experimental and Clinical Surgery"
  • Hungary
      • Budapest, Hungary
        • Magyar Honvédség Egészségügyi Központ, Országos Haemophilia Központ
  • India
      • Gujrat, India
        • Nirmal Hospital
      • Karnad, India
        • K.L.E.S Dr. Prabhakar Kore Hospital and Medical Research Centre
      • Lucknow, India
        • Sanjay Gandhi Postgraduate Institute of Medical Sciences
      • Mumbai, India
        • K.J Somaiya Hospital and Research Centre
      • Mumbai, India
        • MCGM - Comprehensive Thalassemia Care, Pediatric Hematology-Oncology & BMT Centre
      • Mumbai, India
        • Sahyadri Specialty Hospital
      • Pune, India
        • Grant Medical Foundation, Ruby Hall Clinic
      • Rishīkesh, India
        • All India Institute of Medical Sciences, Rishikesh
  • Italy
      • Firenze, Italy
        • Azienda Ospedaliero-Universitaria Careggi
      • Milan, Italy
        • Fondazione Irccs Ca' Granda Ospedale Maggiore Policlinico Di Milano
      • Napoli, Italy
        • Azienda Ospedaliera Universitaria Federico II
      • Torino, Italy
        • Citta della Salute e della Scienza di Torino - Ospedale le Molinette
  • Malaysia
      • Ampang, Malaysia
        • Hospital Ampang
      • Kota Bharu, Malaysia
        • Raja Perempuan Zainab II Hospital
      • Kota Kinabalu, Malaysia
        • Queen Elizabeth Hospital Malaysia
      • Kuala Lumpur, Malaysia
        • Hospital Tunku Azizah Kuala Lumpur
      • Sungai Petani, Malaysia
        • Tuanku Ja'afar Hospital, Seremban
  • Mexico
      • Ciudad de mexico, Mexico
        • Instituto Nacional de Pediatría
      • Durango, Mexico
        • Instituto de Investigaciones Aplicada a la Neurociencia A.C.
      • Mexico City, Mexico
        • Investigación e Innovación en Medicina Traslacional S.A.P.I. de C.V.
  • Poland
      • Rzeszów, Poland
        • Korczowski Bartosz, Gabinet Lekarski
  • Russian Federation
      • Kirov, Russian Federation
        • Kirov Research Institute of Hematology and Blood Transfusion
      • Nizhny Novgorod, Russian Federation
        • Medis, Llc
  • South Africa
      • Johannesburg, South Africa
        • Haemophilia Comprehensive Care Centre
  • Spain
      • Barcelona, Spain
        • Hospital Universitario Vall d'Hebron
      • Málaga, Spain
        • Hospital de Málaga
  • Taiwan
      • Changhua City, Taiwan
        • Changhua Christian Hospital (CCH)
      • Taichung, Taiwan
        • Taichung Veterans General Hospital
  • Turkey
      • Antalya, Turkey
        • Akdeniz University Medical Faculty Hospital
      • Istanbul, Turkey
        • Istanbul University Faculty of Medicine
      • Seyhan, Turkey
        • Özel Acibadem Adana Hastanesi
      • İzmir, Turkey
        • Ege University Medical Faculty
  • Ukraine
      • Cherkasy, Ukraine
        • "Cherkasy Regional Oncological Dispensary of Cherkasy Regional Council", Regional Treatment and Diagnostic Center of Hematology
      • Kyiv, Ukraine
        • "Kyiv City Clinical Hospital #9" of Executive Body of Kyiv City Council (Kyiv City State Administration), City Scientific-Practical Centre of Diagnostics and Treatment
      • Lviv, Ukraine
        • "Institute of Blood Pathology and Transfusion Medicine of National Academy of Medical Sciences of Ukraine", Haematology Department
  • United Kingdom
      • Birmingham, United Kingdom
        • Queen Elizabeth Hospital Birmingham
      • Liverpool, United Kingdom
        • Royal Liverpool University Hospital
      • Southampton, United Kingdom
        • University Hospital Southampton NHS Foundation Trust
  • United States
    • Arizona
      • Phoenix, Arizona, United States, 85016
        • Phoenix Children's Hospital
    • District of Columbia
      • Washington, District of Columbia, United States, 20007
        • Lombardi Comprehensive Cancer Center

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

12 years and older (Child, Adult, Older Adult)

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Description

Inclusion Criteria:

  • Diagnosis of congenital hemophilia A or B with inhibitors
  • Male or Female, age 12 or older
  • History of frequent bleeding episodes
  • Affirmation of informed consent with signature confirmation and assent for children between ages 12 to 17 before any study related activities

Exclusion Criteria:

  • Previous participation in a clinical trial evaluating a modified rFVIIa agent
  • Received an investigational drug within 30 days or 5 half-lives or absence of clinical effect
  • Known hypersensitivity to trial or related product
  • Known positive antibody to FVII or FVIIa detected by central lab at screening
  • Have a coagulation disorder other than hemophilia A or B
  • Be immunosuppressed
  • Significant contraindication to participate

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: Randomized
  • Interventional Model: Crossover Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: MarzAA
Coagulation Factor VIIa variant, 60 µg/kg by subcutaneous route, administered on-demand during bleeding episodes for a maximum of 3 doses as needed for hemostasis
Biological: MarzAA
A cross over design to assess the efficacy of a dosing regimen of 60 µg/kg of MarzAA compared with standard of care for the treatment of bleeding episodes.
Active Comparator: Standard of Care
Standard of care administered on-demand during bleeding episodes
Biological: MarzAA
A cross over design to assess the efficacy of a dosing regimen of 60 µg/kg of MarzAA compared with standard of care for the treatment of bleeding episodes.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Bleeding episode treatment success
Time Frame: 24 hours after the first administration of study drug
Proportion of bleeding events treated with MarzAA achieving hemostatic efficacy based on a four-point scale according to the Investigator's assessment compared with standard of care.
24 hours after the first administration of study drug

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Catalyst Biosciences

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
May 4, 2021

Primary Completion (Actual)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
November 15, 2021

Study Completion (Actual)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 1, 2021

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
July 24, 2020

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
July 24, 2020

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
July 28, 2020

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
December 17, 2021

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
December 2, 2021

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
December 1, 2021

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • MAA-304

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

No

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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