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A Trial Evaluating Efficacy and Safety of Prophylactic Administration of Concizumab in Patients With Severe Haemophilia A Without Inhibitors

A Multi-Centre Trial Evaluating Efficacy and Safety of Prophylactic Administration of Concizumab in Patients With Severe Haemophilia A Without Inhibitors

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03196297
Acronym
explorer™5
Enrollment
36
Registered
2017-06-22
Start date
2017-08-16
Completion date
2020-06-03
Last updated
2021-11-16

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Haemophilia A, Haemostasis

Brief summary

This trial is conducted in Asia, Europe and the United States of America (USA). The aim of the trial is to assess the efficacy of concizumab administered s.c. (subcutaneously, under the skin) once daily in preventing bleeding episodes in patients with severe haemophilia A without inhibitors.

Interventions

0.15 mg/kg (with potential stepwise dose administration to 0.25 mg/kg) administered daily s.c (subcutaneously, under the skin). Treatment duration is 24 weeks in the main phase, and 52 weeks in the extension phase

Breakthrough bleeding episodes will be treated by the patients at home with turoctocog alfa at the discretion of the study doctor, who will also choose dose levels

Sponsors

Novo Nordisk A/S
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
MALE
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

- Informed consent obtained before any trial-related activities. Trial-related activities are any procedures that are carried out as part of the trial, including activities to determine the suitability for the trial - Male patients aged 18 years or older at the time of signing informed consent, diagnosed with severe haemophilia A (FVIII activity below 1%), based on medical records or results at screening

Exclusion criteria

- Known or suspected hypersensitivity to trial product(s) or related products - Known inherited or acquired bleeding disorder other than haemophilia A - Presence of inhibitors (neutralising antibodies) to Factor VIII (equal to or above 0.6 Bethesda Units) at screening measured by the Nijmegen method

Design outcomes

Primary

MeasureTime frameDescription
The Number of Bleeding Episodes During at Least 24 Weeks From Treatment OnsetDuring at least 24 weeks from treatment onsetThe number of bleeding episodes that were treated during at least 24 weeks from treatment onset are presented. The data is presented while on last dose level when the bleed occurred.

Secondary

MeasureTime frameDescription
The Number of Spontaneous Bleeding Episodes During at Least 24 Weeks From Treatment OnsetDuring at least 24 weeks from treatment onsetBleeds that were not linked to a specific, known action or event are called spontaneous bleeding episodes. The number of spontaneous bleeding episodes that were treated during at least 24 weeks from treatment onset are presented. The data is presented while on last dose level when the bleed occurred.
The Number of Spontaneous Bleeding Episodes During at Least 76 Weeks From Treatment OnsetDuring at least 76 weeks from treatment onsetBleeds that were not linked to a specific, known action or event are called spontaneous bleeding episodes. The number of spontaneous bleeding episodes that were treated during at least 76 weeks from treatment onset are presented. The data is presented while on last dose level when the bleed occurred.
Number of Treatment-emergent Adverse Events (TEAEs) During at Least 24 Weeks From Treatment OnsetDuring at least 24 weeks from treatment onset (week 0)An adverse event (AE) was any untoward medical occurrence in a participant administered a medicinal product, and which does not necessarily had a causal relationship with this treatment. A TEAE was defined as an event that had onset from the first exposure to treatment until the last visit in the trial. Number of TEAEs that occurred during at least 24 weeks from treatment onset (week 0) are presented. The data is presented per dose level participants were on at the time of onset of the adverse event.
Number of Treatment-emergent Adverse Events (TEAEs) During at Least 76 Weeks From Treatment OnsetDuring at least 76 weeks from treatment onset (week 0)An adverse event (AE) was any untoward medical occurrence in a participant administered a medicinal product, and which does not necessarily had a causal relationship with this treatment. A TEAE was defined as an event that had onset from the first exposure to treatment until the last visit in the trial. Number of TEAEs that occurred during at least 76 weeks from treatment onset (week 0) are presented. The data is presented per dose level participants were on at the time of onset of the adverse event.
Occurrence of Anti-concizumab Antibodies During at Least 24 Weeks From Treatment OnsetDuring at least 24 weeks from treatment onset (week 0)Occurrence of anti-concizumab antibodies during at least 24 weeks from treatment onset (week 0) is presented. In the reported data, 'Yes' infers number of participants who showed positive anti-concizumab antibody tests whereas 'No' infers number of participants who showed negative anti-concizumab antibody tests.
Occurrence of Anti-concizumab Antibodies During at Least 76 Weeks From Treatment OnsetDuring at least 76 weeks from treatment onset (week 0)Occurrence of anti-concizumab antibodies during at least 76 weeks from treatment onset (week 0) is presented. In the reported data, 'Yes' infers number of participants who showed positive anti-concizumab antibody tests whereas 'No' infers number of participants who showed negative anti-concizumab antibody tests.
Change in Fibrinogen During 24 Weeks From Treatment OnsetDuring 24 weeks from treatment onset (week 0)Change in fibrinogen during 24 weeks from treatment onset (week 0) is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.
Change in Fibrinogen During at Least 76 Weeks From Treatment OnsetDuring at least 76 weeks from treatment onset (week 0)Change in fibrinogen during at least 76 weeks from treatment onset (week 0) is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.
Change in D-dimer During 24 Weeks From Treatment OnsetDuring 24 weeks from treatment onset (week 0)Change in D-dimer during at least 24 weeks from treatment onset (week 0) is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.
Change in D-dimer During at Least 76 Weeks From Treatment OnsetDuring at least 76 weeks from treatment onset (week 0)Change in D-dimer during at least 76 weeks from treatment onset (week 0) is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.
Change in Prothrombin Fragment 1 + 2 (F1 + F2) During 24 Weeks From Treatment OnsetDuring 24 weeks from treatment onset (week 0)Change in F1 + F2 during 24 weeks from treatment onset (week 0) is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.
Change in Prothrombin Fragment 1 + 2 (F1 + F2) During at Least 76 Weeks From Treatment OnsetDuring at least 76 weeks from treatment onset (week 0)Change in F1 + F2 during at least 76 weeks from treatment onset (week 0) is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.
Change in Prothrombin Time (PT) During 24 Weeks From Treatment OnsetDuring 24 weeks from treatment onset (week 0)Change in PT during 24 weeks from treatment onset (week 0) is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.
Change in Prothrombin Time (PT) During at Least 76 Weeks From Treatment OnsetDuring at least 76 weeks from treatment onset (week 0)Change in PT during at least 76 weeks from treatment onset (week 0) is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.
The Number of Bleeding Episodes During at Least 76 Weeks From Treatment OnsetDuring at least 76 weeks from treatment onsetThe number of bleeding episodes that were treated during at least 76 weeks from treatment onset are presented. The data is presented while on last dose level when the bleed occurred.
Change in Activated Partial Thromboplastin Time (APTT) During at Least 76 Weeks From Treatment OnsetDuring at least 76 weeks from treatment onset (week 0)Change in APTT during at least 76 weeks from treatment onset (week 0) is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.
Change in Anti-thrombin (AT) During 24 Weeks From Treatment OnsetDuring 24 weeks from treatment onset (week 0)Change in AT during 24 weeks from treatment onset (week 0) is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.
Change in Anti-thrombin (AT) After at Least 76 Weeks From TreatmentDuring at least 76 weeks from treatment onset (week 0)Change in AT after at least 76 weeks from treatment onset (week 0) is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.
Concentration of Concizumab Prior to the Last Dose Administration at 24 WeeksPrior to the last dose administration at 24 weeksConcentration of concizumab prior to the last dose administration at 24 weeks is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.
Concentration of Concizumab Prior to the Last Dose Administration After at Least 76 WeeksPrior to the last dose administration after at least 76 weeksConcentration of concizumab prior to the last dose administration after at least 76 weeks is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.
Free Tissue Factor Pathway Inhibitor (TFPI) Concentration Value Prior to the Last Dose Administration at 24 WeeksPrior to the last dose administration at 24 weeksFree TFPI (TFPI not bound to concizumab) concentration value prior to the last dose administration at 24 weeks is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.
Free Tissue Factor Pathway Inhibitor (TFPI) Concentration Value Prior to the Last Dose Administration After at Least 76 WeeksPrior to the last dose administration after at least 76 weeksFree TFPI concentration value prior to the last dose administration after at least 76 weeks is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.
Peak Thrombin Generation Prior to the Last Dose Administration at 24 WeeksPrior to the last dose administration at 24 weeksPeak thrombin generation is the maximal concentration of thrombin formed at a given point in time. Peak thrombin generation prior to the last dose administration at 24 weeks is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.
Peak Thrombin Generation Prior to the Last Dose Administration After at Least 76 WeeksPrior to the last dose administration after at least 76 weeksPeak thrombin generation is the maximal concentration of thrombin formed at a given point in time. Peak thrombin generation prior to the last dose administration after at least 76 weeks is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.
Endogenous Thrombin Potential Prior to the Last Dose Administration at 24 WeeksPrior to the last dose administration at 24 weeksThe endogenous thrombin potential (ETP), defined as the amount of thrombin which can be generated after the in vitro activation of coagulation with tissue factor as trigger and phospholipids as platelet substitute. Endogenous thrombin potential prior to the last dose administration at 24 weeks is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.
Endogenous Thrombin Potential Prior to the Last Dose Administration After at Least 76 WeeksPrior to the last dose administration after at least 76 weeksThe endogenous thrombin potential (ETP), defined as the amount of thrombin which can be generated after the in vitro activation of coagulation with tissue factor as trigger and phospholipids as platelet substitute. Endogenous thrombin potential prior to the last dose administration after at least 76 weeks is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.
Thrombin Generation Velocity Index Prior to the Last Dose Administration at 24 WeeksPrior to the last dose administration at 24 weeksThrombin generation velocity index represents the effective rate of thrombin generation between lag time and time to peak. Thrombin generation velocity index prior to the last dose administration at 24 weeks is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.
Thrombin Generation Velocity Index Prior to the Last Dose Administration After at Least 76 WeeksPrior to the last dose administration after at least 76 weeksThrombin generation velocity index represents the effective rate of thrombin generation between lag time and time to peak. Thrombin generation velocity index prior to the last dose administration after at least 76 weeks is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.
Change in Activated Partial Thromboplastin Time (APTT) During 24 Weeks From Treatment OnsetDuring 24 weeks from treatment onset (week 0)Change in APTT during 24 weeks from treatment onset (week 0) is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.

Countries

France, Germany, Italy, Japan, Spain, Sweden, Thailand, Turkey (Türkiye), Ukraine, United Kingdom, United States

Participant flow

Recruitment details

The trial was conducted at 26 sites in 11 countries as follows: France (3), Germany (2), Italy (1), Japan (3), Spain (3), Sweden (2), Thailand (1), Turkey (3), the United Kingdom (4), Ukraine (1) and the United States (3). In addition to these sites, 5 sites were approved by the IRB/IEC and/or local health authority but did not screen or assign any participants to treatment.

Pre-assignment details

The trial consisted of two treatment periods: main part which lasted at least 24 weeks for all participants in the trial and an extension part which was up to 102 weeks.

Participants by arm

ArmCount
Concizumab
Participants were to receive subcutaneous (s.c.) injection of concizumab once daily for up to 126 weeks (24 weeks main part + 52-102 weeks extension part). The initial dose was 0.15 milligrams per kilogram (mg/kg) and then the dose was escalated to 0.20 and 0.25 mg/kg based on the number of spontaneous bleeding episodes. Participants continued the extension phase at the same dose of concizumab once daily they have reached at the end of main part for 52-102 weeks with the potential dose escalation based on the number of spontaneous bleeding episodes. Breakthrough bleeding episodes occurring to the participants during the trial were treated with turoctocog at home.
36
Total36

Withdrawals & dropouts

PeriodReasonFG000
Extension PeriodLack of Efficacy2
Extension PeriodWithdrawal by Subject1
Main PeriodWithdrawal by Subject4

Baseline characteristics

CharacteristicConcizumab
Age, Continuous36.9 Years
STANDARD_DEVIATION 12.9
Ethnicity (NIH/OMB)
Hispanic or Latino
3 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
30 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
3 Participants
Race/Ethnicity, Customized
Asian
8 Participants
Race/Ethnicity, Customized
Not applicable
3 Participants
Race/Ethnicity, Customized
Other
1 Participants
Race/Ethnicity, Customized
White
24 Participants
Sex: Female, Male
Female
0 Participants
Sex: Female, Male
Male
36 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
EG002
affected / at risk
EG003
affected / at risk
EG004
affected / at risk
EG005
affected / at risk
deaths
Total, all-cause mortality
0 / 360 / 150 / 80 / 190 / 140 / 10
other
Total, other adverse events
26 / 367 / 153 / 816 / 199 / 147 / 10
serious
Total, serious adverse events
0 / 360 / 150 / 82 / 191 / 142 / 10

Outcome results

Primary

The Number of Bleeding Episodes During at Least 24 Weeks From Treatment Onset

The number of bleeding episodes that were treated during at least 24 weeks from treatment onset are presented. The data is presented while on last dose level when the bleed occurred.

Time frame: During at least 24 weeks from treatment onset

Population: The FAS included all participants who took al least one dose of the study drug.

ArmMeasureValue (NUMBER)
Concizumab 0.15 mg/kg- Main PartThe Number of Bleeding Episodes During at Least 24 Weeks From Treatment Onset43 Episodes
Concizumab 0.20 mg/kg- Main PartThe Number of Bleeding Episodes During at Least 24 Weeks From Treatment Onset13 Episodes
Concizumab 0.25 mg/kg- Main PartThe Number of Bleeding Episodes During at Least 24 Weeks From Treatment Onset14 Episodes
Secondary

Change in Activated Partial Thromboplastin Time (APTT) During 24 Weeks From Treatment Onset

Change in APTT during 24 weeks from treatment onset (week 0) is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.

Time frame: During 24 weeks from treatment onset (week 0)

Population: The SAS included all participants who took al least one dose of the study drug. Overall number of participants analysed = number of participants with available data at the last dose level.

ArmMeasureValue (MEAN)Dispersion
Concizumab 0.15 mg/kg- Main PartChange in Activated Partial Thromboplastin Time (APTT) During 24 Weeks From Treatment Onset1.5 secStandard Deviation 10.2
Concizumab 0.20 mg/kg- Main PartChange in Activated Partial Thromboplastin Time (APTT) During 24 Weeks From Treatment Onset3.1 secStandard Deviation 6.1
Concizumab 0.25 mg/kg- Main PartChange in Activated Partial Thromboplastin Time (APTT) During 24 Weeks From Treatment Onset6.5 secStandard Deviation 6.9
Secondary

Change in Activated Partial Thromboplastin Time (APTT) During at Least 76 Weeks From Treatment Onset

Change in APTT during at least 76 weeks from treatment onset (week 0) is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.

Time frame: During at least 76 weeks from treatment onset (week 0)

Population: The SAS included all participants who took al least one dose of the study drug. Overall number of participants analysed = number of participants with available data at the last dose level.

ArmMeasureValue (MEAN)Dispersion
Concizumab 0.15 mg/kg- Main PartChange in Activated Partial Thromboplastin Time (APTT) During at Least 76 Weeks From Treatment Onset3.1 secStandard Deviation 4.3
Concizumab 0.20 mg/kg- Main PartChange in Activated Partial Thromboplastin Time (APTT) During at Least 76 Weeks From Treatment Onset9.2 secStandard Deviation 8.8
Concizumab 0.25 mg/kg- Main PartChange in Activated Partial Thromboplastin Time (APTT) During at Least 76 Weeks From Treatment Onset2.1 secStandard Deviation 9.4
Secondary

Change in Anti-thrombin (AT) After at Least 76 Weeks From Treatment

Change in AT after at least 76 weeks from treatment onset (week 0) is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.

Time frame: During at least 76 weeks from treatment onset (week 0)

Population: The SAS included all participants who took al least one dose of the study drug. Overall number of participants analysed = number of participants with available data at the last dose level.

ArmMeasureValue (MEAN)Dispersion
Concizumab 0.15 mg/kg- Main PartChange in Anti-thrombin (AT) After at Least 76 Weeks From Treatment0 secondStandard Deviation 12
Concizumab 0.20 mg/kg- Main PartChange in Anti-thrombin (AT) After at Least 76 Weeks From Treatment11 secondStandard Deviation 23
Concizumab 0.25 mg/kg- Main PartChange in Anti-thrombin (AT) After at Least 76 Weeks From Treatment15 secondStandard Deviation 25
Secondary

Change in Anti-thrombin (AT) During 24 Weeks From Treatment Onset

Change in AT during 24 weeks from treatment onset (week 0) is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.

Time frame: During 24 weeks from treatment onset (week 0)

Population: The SAS included all participants who took al least one dose of the study drug. Overall number of participants analysed = number of participants with available data at the last dose level.

ArmMeasureValue (MEAN)Dispersion
Concizumab 0.15 mg/kg- Main PartChange in Anti-thrombin (AT) During 24 Weeks From Treatment Onset7 Percentage pointStandard Deviation 13
Concizumab 0.20 mg/kg- Main PartChange in Anti-thrombin (AT) During 24 Weeks From Treatment Onset17 Percentage pointStandard Deviation 31
Concizumab 0.25 mg/kg- Main PartChange in Anti-thrombin (AT) During 24 Weeks From Treatment Onset7 Percentage pointStandard Deviation 18
Secondary

Change in D-dimer During 24 Weeks From Treatment Onset

Change in D-dimer during at least 24 weeks from treatment onset (week 0) is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.

Time frame: During 24 weeks from treatment onset (week 0)

Population: The SAS included all participants who took al least one dose of the study drug. Overall number of participants analysed = number of participants with available data at the last dose level.

ArmMeasureValue (MEAN)Dispersion
Concizumab 0.15 mg/kg- Main PartChange in D-dimer During 24 Weeks From Treatment Onset184.5 Nanograms per milliliter (ng/mL)Standard Deviation 404.5
Concizumab 0.20 mg/kg- Main PartChange in D-dimer During 24 Weeks From Treatment Onset272.9 Nanograms per milliliter (ng/mL)Standard Deviation 684.4
Concizumab 0.25 mg/kg- Main PartChange in D-dimer During 24 Weeks From Treatment Onset703.8 Nanograms per milliliter (ng/mL)Standard Deviation 693.6
Secondary

Change in D-dimer During at Least 76 Weeks From Treatment Onset

Change in D-dimer during at least 76 weeks from treatment onset (week 0) is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.

Time frame: During at least 76 weeks from treatment onset (week 0)

Population: The SAS included all participants who took al least one dose of the study drug. Overall number of participants analysed = number of participants with available data at the last dose level.

ArmMeasureValue (MEAN)Dispersion
Concizumab 0.15 mg/kg- Main PartChange in D-dimer During at Least 76 Weeks From Treatment Onset265.4 Nanograms per milliliter (ng/mL)Standard Deviation 405.3
Concizumab 0.20 mg/kg- Main PartChange in D-dimer During at Least 76 Weeks From Treatment Onset506.7 Nanograms per milliliter (ng/mL)Standard Deviation 369.9
Concizumab 0.25 mg/kg- Main PartChange in D-dimer During at Least 76 Weeks From Treatment Onset1109.3 Nanograms per milliliter (ng/mL)Standard Deviation 818.5
Secondary

Change in Fibrinogen During 24 Weeks From Treatment Onset

Change in fibrinogen during 24 weeks from treatment onset (week 0) is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.

Time frame: During 24 weeks from treatment onset (week 0)

Population: The SAS included all participants who took al least one dose of the study drug. Overall number of participants analysed = number of participants with available data at the last dose level.

ArmMeasureValue (MEAN)Dispersion
Concizumab 0.15 mg/kg- Main PartChange in Fibrinogen During 24 Weeks From Treatment Onset-0.08 gram per litre (g/L)Standard Deviation 0.61
Concizumab 0.20 mg/kg- Main PartChange in Fibrinogen During 24 Weeks From Treatment Onset-0.19 gram per litre (g/L)Standard Deviation 0.47
Concizumab 0.25 mg/kg- Main PartChange in Fibrinogen During 24 Weeks From Treatment Onset-0.27 gram per litre (g/L)Standard Deviation 0.29
Secondary

Change in Fibrinogen During at Least 76 Weeks From Treatment Onset

Change in fibrinogen during at least 76 weeks from treatment onset (week 0) is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.

Time frame: During at least 76 weeks from treatment onset (week 0)

Population: The SAS included all participants who took al least one dose of the study drug. Overall number of participants analysed = number of participants with available data at the last dose level.

ArmMeasureValue (MEAN)Dispersion
Concizumab 0.15 mg/kg- Main PartChange in Fibrinogen During at Least 76 Weeks From Treatment Onset-0.05 gram per litre (g/L)Standard Deviation 0.39
Concizumab 0.20 mg/kg- Main PartChange in Fibrinogen During at Least 76 Weeks From Treatment Onset-0.35 gram per litre (g/L)Standard Deviation 0.56
Concizumab 0.25 mg/kg- Main PartChange in Fibrinogen During at Least 76 Weeks From Treatment Onset-0.23 gram per litre (g/L)Standard Deviation 0.63
Secondary

Change in Prothrombin Fragment 1 + 2 (F1 + F2) During 24 Weeks From Treatment Onset

Change in F1 + F2 during 24 weeks from treatment onset (week 0) is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.

Time frame: During 24 weeks from treatment onset (week 0)

Population: The SAS included all participants who took al least one dose of the study drug. Overall number of participants analysed = number of participants with available data at the last dose level.

ArmMeasureValue (MEAN)Dispersion
Concizumab 0.15 mg/kg- Main PartChange in Prothrombin Fragment 1 + 2 (F1 + F2) During 24 Weeks From Treatment Onset134 Picomoles per liter (pmol/L)Standard Deviation 156
Concizumab 0.20 mg/kg- Main PartChange in Prothrombin Fragment 1 + 2 (F1 + F2) During 24 Weeks From Treatment Onset257 Picomoles per liter (pmol/L)Standard Deviation 524
Concizumab 0.25 mg/kg- Main PartChange in Prothrombin Fragment 1 + 2 (F1 + F2) During 24 Weeks From Treatment Onset580 Picomoles per liter (pmol/L)Standard Deviation 741
Secondary

Change in Prothrombin Fragment 1 + 2 (F1 + F2) During at Least 76 Weeks From Treatment Onset

Change in F1 + F2 during at least 76 weeks from treatment onset (week 0) is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.

Time frame: During at least 76 weeks from treatment onset (week 0)

Population: The SAS included all participants who took al least one dose of the study drug. Overall number of participants analysed = number of participants with available data at the last dose level.

ArmMeasureValue (MEAN)Dispersion
Concizumab 0.15 mg/kg- Main PartChange in Prothrombin Fragment 1 + 2 (F1 + F2) During at Least 76 Weeks From Treatment Onset128 pmol/LStandard Deviation 183
Concizumab 0.20 mg/kg- Main PartChange in Prothrombin Fragment 1 + 2 (F1 + F2) During at Least 76 Weeks From Treatment Onset211 pmol/LStandard Deviation 207
Concizumab 0.25 mg/kg- Main PartChange in Prothrombin Fragment 1 + 2 (F1 + F2) During at Least 76 Weeks From Treatment Onset889 pmol/LStandard Deviation 423
Secondary

Change in Prothrombin Time (PT) During 24 Weeks From Treatment Onset

Change in PT during 24 weeks from treatment onset (week 0) is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.

Time frame: During 24 weeks from treatment onset (week 0)

Population: The SAS included all participants who took al least one dose of the study drug. Overall number of participants analysed = number of participants with available data at the last dose level.

ArmMeasureValue (MEAN)Dispersion
Concizumab 0.15 mg/kg- Main PartChange in Prothrombin Time (PT) During 24 Weeks From Treatment Onset-0.0 Seconds (sec)Standard Deviation 0.4
Concizumab 0.20 mg/kg- Main PartChange in Prothrombin Time (PT) During 24 Weeks From Treatment Onset-0.3 Seconds (sec)Standard Deviation 0.9
Concizumab 0.25 mg/kg- Main PartChange in Prothrombin Time (PT) During 24 Weeks From Treatment Onset0.3 Seconds (sec)Standard Deviation 0.7
Secondary

Change in Prothrombin Time (PT) During at Least 76 Weeks From Treatment Onset

Change in PT during at least 76 weeks from treatment onset (week 0) is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.

Time frame: During at least 76 weeks from treatment onset (week 0)

Population: The SAS included all participants who took al least one dose of the study drug. Overall number of participants analysed = number of participants with available data at the last dose level.

ArmMeasureValue (MEAN)Dispersion
Concizumab 0.15 mg/kg- Main PartChange in Prothrombin Time (PT) During at Least 76 Weeks From Treatment Onset0.0 secStandard Deviation 0.4
Concizumab 0.20 mg/kg- Main PartChange in Prothrombin Time (PT) During at Least 76 Weeks From Treatment Onset0.8 secStandard Deviation 2.7
Concizumab 0.25 mg/kg- Main PartChange in Prothrombin Time (PT) During at Least 76 Weeks From Treatment Onset0.4 secStandard Deviation 0.4
Secondary

Concentration of Concizumab Prior to the Last Dose Administration After at Least 76 Weeks

Concentration of concizumab prior to the last dose administration after at least 76 weeks is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.

Time frame: Prior to the last dose administration after at least 76 weeks

Population: The FAS included all participants who took al least one dose of the study drug. Overall number of participants analysed = number of participants with available data at the last dose level.

ArmMeasureValue (MEAN)Dispersion
Concizumab 0.15 mg/kg- Main PartConcentration of Concizumab Prior to the Last Dose Administration After at Least 76 Weeks195.1 ng/mLStandard Deviation 161.7
Concizumab 0.20 mg/kg- Main PartConcentration of Concizumab Prior to the Last Dose Administration After at Least 76 Weeks392.3 ng/mLStandard Deviation 427.9
Concizumab 0.25 mg/kg- Main PartConcentration of Concizumab Prior to the Last Dose Administration After at Least 76 Weeks4015.1 ng/mLStandard Deviation 2902
Secondary

Concentration of Concizumab Prior to the Last Dose Administration at 24 Weeks

Concentration of concizumab prior to the last dose administration at 24 weeks is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.

Time frame: Prior to the last dose administration at 24 weeks

Population: The FAS included all participants who took al least one dose of the study drug. Overall number of participants analysed = number of participants with available data at the last dose level.

ArmMeasureValue (MEAN)Dispersion
Concizumab 0.15 mg/kg- Main PartConcentration of Concizumab Prior to the Last Dose Administration at 24 Weeks195.2 ng/mLStandard Deviation 147
Concizumab 0.20 mg/kg- Main PartConcentration of Concizumab Prior to the Last Dose Administration at 24 Weeks374.4 ng/mLStandard Deviation 644
Concizumab 0.25 mg/kg- Main PartConcentration of Concizumab Prior to the Last Dose Administration at 24 Weeks2640.8 ng/mLStandard Deviation 4085.6
Secondary

Endogenous Thrombin Potential Prior to the Last Dose Administration After at Least 76 Weeks

The endogenous thrombin potential (ETP), defined as the amount of thrombin which can be generated after the in vitro activation of coagulation with tissue factor as trigger and phospholipids as platelet substitute. Endogenous thrombin potential prior to the last dose administration after at least 76 weeks is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.

Time frame: Prior to the last dose administration after at least 76 weeks

Population: The FAS included all participants who took al least one dose of the study drug. Overall number of participants analysed = number of participants with available data at the last dose level.

ArmMeasureValue (MEAN)Dispersion
Concizumab 0.15 mg/kg- Main PartEndogenous Thrombin Potential Prior to the Last Dose Administration After at Least 76 Weeks1253.0 nM*minStandard Deviation 507.3
Concizumab 0.20 mg/kg- Main PartEndogenous Thrombin Potential Prior to the Last Dose Administration After at Least 76 Weeks1352.6 nM*minStandard Deviation 349.5
Concizumab 0.25 mg/kg- Main PartEndogenous Thrombin Potential Prior to the Last Dose Administration After at Least 76 Weeks1233.4 nM*minStandard Deviation 267.9
Secondary

Endogenous Thrombin Potential Prior to the Last Dose Administration at 24 Weeks

The endogenous thrombin potential (ETP), defined as the amount of thrombin which can be generated after the in vitro activation of coagulation with tissue factor as trigger and phospholipids as platelet substitute. Endogenous thrombin potential prior to the last dose administration at 24 weeks is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.

Time frame: Prior to the last dose administration at 24 weeks

Population: The FAS included all participants who took al least one dose of the study drug. Overall number of participants analysed = number of participants with available data at the last dose level.

ArmMeasureValue (MEAN)Dispersion
Concizumab 0.15 mg/kg- Main PartEndogenous Thrombin Potential Prior to the Last Dose Administration at 24 Weeks1229.1 Nanomolar*minute (nM*min)Standard Deviation 340.6
Concizumab 0.20 mg/kg- Main PartEndogenous Thrombin Potential Prior to the Last Dose Administration at 24 Weeks965.3 Nanomolar*minute (nM*min)Standard Deviation 362
Concizumab 0.25 mg/kg- Main PartEndogenous Thrombin Potential Prior to the Last Dose Administration at 24 Weeks1176.0 Nanomolar*minute (nM*min)Standard Deviation 278.8
Secondary

Free Tissue Factor Pathway Inhibitor (TFPI) Concentration Value Prior to the Last Dose Administration After at Least 76 Weeks

Free TFPI concentration value prior to the last dose administration after at least 76 weeks is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.

Time frame: Prior to the last dose administration after at least 76 weeks

Population: The FAS included all participants who took al least one dose of the study drug. Overall number of participants analysed = number of participants with available data at the last dose level.

ArmMeasureValue (MEAN)Dispersion
Concizumab 0.15 mg/kg- Main PartFree Tissue Factor Pathway Inhibitor (TFPI) Concentration Value Prior to the Last Dose Administration After at Least 76 Weeks26.9 ng/mLStandard Deviation 17.1
Concizumab 0.20 mg/kg- Main PartFree Tissue Factor Pathway Inhibitor (TFPI) Concentration Value Prior to the Last Dose Administration After at Least 76 Weeks36.1 ng/mLStandard Deviation 33.1
Concizumab 0.25 mg/kg- Main PartFree Tissue Factor Pathway Inhibitor (TFPI) Concentration Value Prior to the Last Dose Administration After at Least 76 Weeks10.1 ng/mLStandard Deviation 5.7
Secondary

Free Tissue Factor Pathway Inhibitor (TFPI) Concentration Value Prior to the Last Dose Administration at 24 Weeks

Free TFPI (TFPI not bound to concizumab) concentration value prior to the last dose administration at 24 weeks is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.

Time frame: Prior to the last dose administration at 24 weeks

Population: The FAS included all participants who took al least one dose of the study drug. Overall number of participants analysed = number of participants with available data at the last dose level.

ArmMeasureValue (MEAN)Dispersion
Concizumab 0.15 mg/kg- Main PartFree Tissue Factor Pathway Inhibitor (TFPI) Concentration Value Prior to the Last Dose Administration at 24 Weeks30.1 ng/mLStandard Deviation 15.6
Concizumab 0.20 mg/kg- Main PartFree Tissue Factor Pathway Inhibitor (TFPI) Concentration Value Prior to the Last Dose Administration at 24 Weeks64.4 ng/mLStandard Deviation 35.3
Concizumab 0.25 mg/kg- Main PartFree Tissue Factor Pathway Inhibitor (TFPI) Concentration Value Prior to the Last Dose Administration at 24 Weeks12.4 ng/mLStandard Deviation 2.2
Secondary

Number of Treatment-emergent Adverse Events (TEAEs) During at Least 24 Weeks From Treatment Onset

An adverse event (AE) was any untoward medical occurrence in a participant administered a medicinal product, and which does not necessarily had a causal relationship with this treatment. A TEAE was defined as an event that had onset from the first exposure to treatment until the last visit in the trial. Number of TEAEs that occurred during at least 24 weeks from treatment onset (week 0) are presented. The data is presented per dose level participants were on at the time of onset of the adverse event.

Time frame: During at least 24 weeks from treatment onset (week 0)

Population: The SAS included all participants who took al least one dose of the study drug.

ArmMeasureValue (NUMBER)
Concizumab 0.15 mg/kg- Main PartNumber of Treatment-emergent Adverse Events (TEAEs) During at Least 24 Weeks From Treatment Onset105 Events
Concizumab 0.20 mg/kg- Main PartNumber of Treatment-emergent Adverse Events (TEAEs) During at Least 24 Weeks From Treatment Onset16 Events
Concizumab 0.25 mg/kg- Main PartNumber of Treatment-emergent Adverse Events (TEAEs) During at Least 24 Weeks From Treatment Onset9 Events
Secondary

Number of Treatment-emergent Adverse Events (TEAEs) During at Least 76 Weeks From Treatment Onset

An adverse event (AE) was any untoward medical occurrence in a participant administered a medicinal product, and which does not necessarily had a causal relationship with this treatment. A TEAE was defined as an event that had onset from the first exposure to treatment until the last visit in the trial. Number of TEAEs that occurred during at least 76 weeks from treatment onset (week 0) are presented. The data is presented per dose level participants were on at the time of onset of the adverse event.

Time frame: During at least 76 weeks from treatment onset (week 0)

Population: The SAS included all participants who took al least one dose of the study drug.

ArmMeasureValue (NUMBER)
Concizumab 0.15 mg/kg- Main PartNumber of Treatment-emergent Adverse Events (TEAEs) During at Least 76 Weeks From Treatment Onset201 Events
Concizumab 0.20 mg/kg- Main PartNumber of Treatment-emergent Adverse Events (TEAEs) During at Least 76 Weeks From Treatment Onset53 Events
Concizumab 0.25 mg/kg- Main PartNumber of Treatment-emergent Adverse Events (TEAEs) During at Least 76 Weeks From Treatment Onset44 Events
Secondary

Occurrence of Anti-concizumab Antibodies During at Least 24 Weeks From Treatment Onset

Occurrence of anti-concizumab antibodies during at least 24 weeks from treatment onset (week 0) is presented. In the reported data, 'Yes' infers number of participants who showed positive anti-concizumab antibody tests whereas 'No' infers number of participants who showed negative anti-concizumab antibody tests.

Time frame: During at least 24 weeks from treatment onset (week 0)

Population: The FAS included all participants who took al least one dose of the study drug.

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Concizumab 0.15 mg/kg- Main PartOccurrence of Anti-concizumab Antibodies During at Least 24 Weeks From Treatment OnsetYes3 Participants
Concizumab 0.15 mg/kg- Main PartOccurrence of Anti-concizumab Antibodies During at Least 24 Weeks From Treatment OnsetNo33 Participants
Secondary

Occurrence of Anti-concizumab Antibodies During at Least 76 Weeks From Treatment Onset

Occurrence of anti-concizumab antibodies during at least 76 weeks from treatment onset (week 0) is presented. In the reported data, 'Yes' infers number of participants who showed positive anti-concizumab antibody tests whereas 'No' infers number of participants who showed negative anti-concizumab antibody tests.

Time frame: During at least 76 weeks from treatment onset (week 0)

Population: The FAS included all participants who took al least one dose of the study drug.

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Concizumab 0.15 mg/kg- Main PartOccurrence of Anti-concizumab Antibodies During at Least 76 Weeks From Treatment OnsetYes9 Participants
Concizumab 0.15 mg/kg- Main PartOccurrence of Anti-concizumab Antibodies During at Least 76 Weeks From Treatment OnsetNo27 Participants
Secondary

Peak Thrombin Generation Prior to the Last Dose Administration After at Least 76 Weeks

Peak thrombin generation is the maximal concentration of thrombin formed at a given point in time. Peak thrombin generation prior to the last dose administration after at least 76 weeks is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.

Time frame: Prior to the last dose administration after at least 76 weeks

Population: The FAS included all participants who took al least one dose of the study drug. Overall number of participants analysed = number of participants with available data at the last dose level.

ArmMeasureValue (MEAN)Dispersion
Concizumab 0.15 mg/kg- Main PartPeak Thrombin Generation Prior to the Last Dose Administration After at Least 76 Weeks90.8 nmol/LStandard Deviation 45.2
Concizumab 0.20 mg/kg- Main PartPeak Thrombin Generation Prior to the Last Dose Administration After at Least 76 Weeks99.1 nmol/LStandard Deviation 36.2
Concizumab 0.25 mg/kg- Main PartPeak Thrombin Generation Prior to the Last Dose Administration After at Least 76 Weeks111.6 nmol/LStandard Deviation 63.5
Secondary

Peak Thrombin Generation Prior to the Last Dose Administration at 24 Weeks

Peak thrombin generation is the maximal concentration of thrombin formed at a given point in time. Peak thrombin generation prior to the last dose administration at 24 weeks is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.

Time frame: Prior to the last dose administration at 24 weeks

Population: The FAS included all participants who took al least one dose of the study drug. Overall number of participants analysed = number of participants with available data at the last dose level.

ArmMeasureValue (MEAN)Dispersion
Concizumab 0.15 mg/kg- Main PartPeak Thrombin Generation Prior to the Last Dose Administration at 24 Weeks88.6 Nanomoles per liter (nmol/L)Standard Deviation 34.5
Concizumab 0.20 mg/kg- Main PartPeak Thrombin Generation Prior to the Last Dose Administration at 24 Weeks67.5 Nanomoles per liter (nmol/L)Standard Deviation 35
Concizumab 0.25 mg/kg- Main PartPeak Thrombin Generation Prior to the Last Dose Administration at 24 Weeks83.4 Nanomoles per liter (nmol/L)Standard Deviation 10.6
Secondary

The Number of Bleeding Episodes During at Least 76 Weeks From Treatment Onset

The number of bleeding episodes that were treated during at least 76 weeks from treatment onset are presented. The data is presented while on last dose level when the bleed occurred.

Time frame: During at least 76 weeks from treatment onset

Population: The FAS included all participants who took al least one dose of the study drug.

ArmMeasureValue (NUMBER)
Concizumab 0.15 mg/kg- Main PartThe Number of Bleeding Episodes During at Least 76 Weeks From Treatment Onset67 Episodes
Concizumab 0.20 mg/kg- Main PartThe Number of Bleeding Episodes During at Least 76 Weeks From Treatment Onset42 Episodes
Concizumab 0.25 mg/kg- Main PartThe Number of Bleeding Episodes During at Least 76 Weeks From Treatment Onset123 Episodes
Secondary

The Number of Spontaneous Bleeding Episodes During at Least 24 Weeks From Treatment Onset

Bleeds that were not linked to a specific, known action or event are called spontaneous bleeding episodes. The number of spontaneous bleeding episodes that were treated during at least 24 weeks from treatment onset are presented. The data is presented while on last dose level when the bleed occurred.

Time frame: During at least 24 weeks from treatment onset

Population: The FAS included all participants who took al least one dose of the study drug.

ArmMeasureValue (NUMBER)
Concizumab 0.15 mg/kg- Main PartThe Number of Spontaneous Bleeding Episodes During at Least 24 Weeks From Treatment Onset16 Episodes
Concizumab 0.20 mg/kg- Main PartThe Number of Spontaneous Bleeding Episodes During at Least 24 Weeks From Treatment Onset8 Episodes
Concizumab 0.25 mg/kg- Main PartThe Number of Spontaneous Bleeding Episodes During at Least 24 Weeks From Treatment Onset2 Episodes
Secondary

The Number of Spontaneous Bleeding Episodes During at Least 76 Weeks From Treatment Onset

Bleeds that were not linked to a specific, known action or event are called spontaneous bleeding episodes. The number of spontaneous bleeding episodes that were treated during at least 76 weeks from treatment onset are presented. The data is presented while on last dose level when the bleed occurred.

Time frame: During at least 76 weeks from treatment onset

Population: The FAS included all participants who took al least one dose of the study drug.

ArmMeasureValue (NUMBER)
Concizumab 0.15 mg/kg- Main PartThe Number of Spontaneous Bleeding Episodes During at Least 76 Weeks From Treatment Onset39 Episodes
Concizumab 0.20 mg/kg- Main PartThe Number of Spontaneous Bleeding Episodes During at Least 76 Weeks From Treatment Onset15 Episodes
Concizumab 0.25 mg/kg- Main PartThe Number of Spontaneous Bleeding Episodes During at Least 76 Weeks From Treatment Onset29 Episodes
Secondary

Thrombin Generation Velocity Index Prior to the Last Dose Administration After at Least 76 Weeks

Thrombin generation velocity index represents the effective rate of thrombin generation between lag time and time to peak. Thrombin generation velocity index prior to the last dose administration after at least 76 weeks is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.

Time frame: Prior to the last dose administration after at least 76 weeks

Population: The FAS included all participants who took al least one dose of the study drug. Overall number of participants analysed = number of participants with available data at the last dose level.

ArmMeasureValue (MEAN)Dispersion
Concizumab 0.15 mg/kg- Main PartThrombin Generation Velocity Index Prior to the Last Dose Administration After at Least 76 Weeks10.3 Nano molar/min (nM/min)Standard Deviation 6.4
Concizumab 0.20 mg/kg- Main PartThrombin Generation Velocity Index Prior to the Last Dose Administration After at Least 76 Weeks10.5 Nano molar/min (nM/min)Standard Deviation 4.8
Concizumab 0.25 mg/kg- Main PartThrombin Generation Velocity Index Prior to the Last Dose Administration After at Least 76 Weeks16.0 Nano molar/min (nM/min)Standard Deviation 17.1
Secondary

Thrombin Generation Velocity Index Prior to the Last Dose Administration at 24 Weeks

Thrombin generation velocity index represents the effective rate of thrombin generation between lag time and time to peak. Thrombin generation velocity index prior to the last dose administration at 24 weeks is presented. The data is presented per the last dose level which the participants have reached at the time of assessment.

Time frame: Prior to the last dose administration at 24 weeks

Population: The FAS included all participants who took al least one dose of the study drug. Overall number of participants analysed = number of participants with available data at the last dose level.

ArmMeasureValue (MEAN)Dispersion
Concizumab 0.15 mg/kg- Main PartThrombin Generation Velocity Index Prior to the Last Dose Administration at 24 Weeks9.3 nM/minStandard Deviation 4.8
Concizumab 0.20 mg/kg- Main PartThrombin Generation Velocity Index Prior to the Last Dose Administration at 24 Weeks7.0 nM/minStandard Deviation 5
Concizumab 0.25 mg/kg- Main PartThrombin Generation Velocity Index Prior to the Last Dose Administration at 24 Weeks8.2 nM/minStandard Deviation 1.6

Source: ClinicalTrials.gov · Data processed: Mar 1, 2026