Skip to content

A Trial Evaluating the Efficacy and Safety of Prophylactic Administration of Concizumab in Haemophilia A and B Patients With Inhibitors

A Multi-Centre, Randomised, Open-Label, Controlled Trial Evaluating the Efficacy and Safety of Prophylactic Administration of Concizumab in Haemophilia A and B Patients With Inhibitors

Status
Completed
Phases
Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT03196284
Acronym
explorer™4
Enrollment
26
Registered
2017-06-22
Start date
2017-08-10
Completion date
2020-01-31
Last updated
2021-10-22

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

Conditions

Congenital Bleeding Disorder, Haemophilia A With Inhibitors, Haemophilia B With Inhibitors

Brief summary

This trial is conducted in Africa, Asia, Europe and North America. 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 haemophilia A and B patients with inhibitors.

Interventions

A loading dose of 0.5 mg/kg will be given as the first dose, followed by 0.15 mg/kg (with potential stepwise dose escalation to 0.25 mg/kg) administered daily s.c. (subcutaneously, under the skin). Treatment duration is 24 weeks in the main trial, and up to 52 weeks in the extension phase

A single dose of 90 μg/kg eptacog alfa one week after dosing with concizumab. On-demand treatment during bleeding episodes in both treatment arms

Sponsors

Novo Nordisk A/S
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
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 haemophilia A or B patients with inhibitors aged 18 years or older at the time of signing informed consent - Patients currently in need of treatment with bypassing agents

Exclusion criteria

- Known or suspected hypersensitivity to trial product(s) or related products - Known inherited or acquired bleeding disorder other than haemophilia - Ongoing or planned immune tolerance induction therapy or prophylaxis with FVIII or FIX

Design outcomes

Primary

MeasureTime frameDescription
The Number of Bleeding EpisodesDuring at least 24 weeks from treatment onset (week 0)The number of bleeding episodes that were treated during at least 24 weeks from treatment onset (week 0) are presented.

Secondary

MeasureTime frameDescription
The Number of Spontaneous Bleeding EpisodesDuring at least 24 weeks from treatment onset (week 0)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 (week 0) are presented. The data is presented per the last dose level which the participants have reached at the time of assessment.
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 the dose level which the participants have reached at the time of 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 the dose level which the participants have reached at the time of event.
Number of Treatment-emergent Adverse Events (TEAEs) Within 24 Hours After Eptacog Alfa AdministrationWithin 24 hours after eptacog alfa administrationAn 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 within 24 hours after eptacog alfa administration are presented. This outcome measure is applicable only for 'Eptacog alfa' treatment arm.
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. This outcome measure is applicable for only 'Concizumab' treatment arm.
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. This outcome measure is applicable for only 'Concizumab' treatment arm.
Change in FibrinogenDuring at least 24 weeks from treatment onset (week 0)Change in fibrinogen 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-dimerDuring at least 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.
The Number of Bleeding EpisodesDuring at least 76 weeks from treatment onset (week 0)The number of bleeding episodes that were treated during at least 76 weeks from treatment onset (week 0) are presented. This outcome measure is applicable for only 'Concizumab' treatment arm.
Change in Prothrombin Time (PT)During at least 24 weeks from treatment onset (week 0)Change in PT 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 Activated Partial Thromboplastin Time (APTT)During at least 24 weeks from treatment onset (week 0)Change in APTT 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 Anti-thrombin (AT)During at least 24 weeks from treatment onset (week 0)Change in AT 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.
Concentration of ConcizumabPrior 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.
Free Tissue Factor Pathway Inhibitor (TFPI) Concentration ValuePrior 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.
Peak Thrombin GenerationPrior 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.
Endogenous Thrombin PotentialPrior to the last dose administration at 24 weeksEndogenous 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.
Thrombin Generation Velocity IndexPrior to the last dose administration at 24 weeksThrombin 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.
Change in Prothrombin Fragment 1 + 2 (F1 + 2)During at least 24 weeks from treatment onset (week 0)Change in F1 + 2 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.

Countries

Austria, Canada, Croatia, Denmark, Greece, Israel, Italy, Japan, Malaysia, Spain, Sweden, Ukraine, United Kingdom, United States

Participant flow

Recruitment details

The trial was conducted at 17 sites in 12 countries as follows: Austria (1), Croatia (1), Denmark (1), Italy (2), Spain (2), Sweden (1), the United Kingdom (1), Israel (1), Malaysia (2), Ukraine (1), Japan (2) and the United States (2). In addition to these sites, 4 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 24 weeks for participants randomised to eptacog alfa and at least 24 weeks for participants randomised to concizumab, and an extension part which lasted up to 94 weeks.

Participants by arm

ArmCount
Concizumab
Participants were to receive subcutaneous (s.c.) injection of concizumab once daily. In main 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 who completed the main part of the study continued their treatment in the extension part for 52-94 weeks. A loading dose of 0.5 mg/kg was given as the first concizumab dose. A single injection of 90 micrograms per kilogram (μg/kg) eptacog alfa (rFVIIa) was administered in a non-bleeding state one week after dosing with concizumab had initiated.
17
Eptacog Alfa
Participants were to receive eptacog alfa on-demand treatment for 24 weeks in main part. All participants were then switched to concizumab treatment in the extension part.
9
Total26

Withdrawals & dropouts

PeriodReasonFG000FG001FG002
Extension PartLack of Efficacy001
Extension PartPhysician Decision001
Extension PartWithdrawal by Subject001
Main PartWithdrawal by Subject010

Baseline characteristics

CharacteristicEptacog AlfaTotalConcizumab
Age, Continuous41.1 Years
STANDARD_DEVIATION 15
36.5 Years
STANDARD_DEVIATION 12.7
34.1 Years
STANDARD_DEVIATION 11.1
Ethnicity (NIH/OMB)
Hispanic or Latino
0 Participants1 Participants1 Participants
Ethnicity (NIH/OMB)
Not Hispanic or Latino
9 Participants25 Participants16 Participants
Ethnicity (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Asian
4 Participants6 Participants2 Participants
Race (NIH/OMB)
Black or African American
0 Participants0 Participants0 Participants
Race (NIH/OMB)
More than one race
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants0 Participants0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants0 Participants0 Participants
Race (NIH/OMB)
White
5 Participants20 Participants15 Participants
Sex: Female, Male
Female
0 Participants0 Participants0 Participants
Sex: Female, Male
Male
9 Participants26 Participants17 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 / 90 / 170 / 20 / 230 / 130 / 4
other
Total, other adverse events
7 / 913 / 172 / 213 / 239 / 132 / 4
serious
Total, serious adverse events
3 / 91 / 170 / 23 / 231 / 130 / 4

Outcome results

Primary

The Number of Bleeding Episodes

The number of bleeding episodes that were treated during at least 24 weeks from treatment onset (week 0) are presented.

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

Population: The FAS included all randomised participants.

ArmMeasureValue (NUMBER)
Concizumab- Main PartThe Number of Bleeding Episodes47 episodes
Eptacog Alfa- Main PartThe Number of Bleeding Episodes77 episodes
Secondary

Change in Activated Partial Thromboplastin Time (APTT)

Change in APTT 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 at least 24 weeks from treatment onset (week 0)

Population: The SAS included all randomised participants. Overall number of participants analysed = number of participants available for analysis.

ArmMeasureValue (MEAN)Dispersion
Concizumab- Main PartChange in Activated Partial Thromboplastin Time (APTT)-2.6 secStandard Deviation 12.1
Eptacog Alfa- Main PartChange in Activated Partial Thromboplastin Time (APTT)0.9 secStandard Deviation 2.3
Eptacog Alfa- Main PartChange in Activated Partial Thromboplastin Time (APTT)5.9 secStandard Deviation 15.2
Secondary

Change in Activated Partial Thromboplastin Time (APTT)

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 randomised participants. Overall number of participants analysed = number of participants available for the analysis.

ArmMeasureValue (MEAN)Dispersion
Concizumab- Main PartChange in Activated Partial Thromboplastin Time (APTT)-6.6 secStandard Deviation 9
Eptacog Alfa- Main PartChange in Activated Partial Thromboplastin Time (APTT)3.7 secStandard Deviation 6.9
Eptacog Alfa- Main PartChange in Activated Partial Thromboplastin Time (APTT)20.9 secStandard Deviation 17.3
Secondary

Change in Anti-thrombin (AT)

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: After at least 76 weeks from treatment onset (week 0)

Population: The SAS included all randomised participants. Overall number of participants analysed = number of participants available for the analysis.

ArmMeasureValue (MEAN)Dispersion
Concizumab- Main PartChange in Anti-thrombin (AT)-3 Percentage point of ATStandard Deviation 15
Eptacog Alfa- Main PartChange in Anti-thrombin (AT)-5 Percentage point of ATStandard Deviation 11
Eptacog Alfa- Main PartChange in Anti-thrombin (AT)-1 Percentage point of ATStandard Deviation 14
Secondary

Change in Anti-thrombin (AT)

Change in AT 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 at least 24 weeks from treatment onset (week 0)

Population: The SAS included all randomised participants. Overall number of participants analysed = number of participants available for analysis.

ArmMeasureValue (MEAN)Dispersion
Concizumab- Main PartChange in Anti-thrombin (AT)-1 Percentage point of ATStandard Deviation 11
Eptacog Alfa- Main PartChange in Anti-thrombin (AT)8 Percentage point of ATStandard Deviation 4
Eptacog Alfa- Main PartChange in Anti-thrombin (AT)1 Percentage point of ATStandard Deviation 10
Secondary

Change in D-dimer

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 randomised participants. Overall number of participants analysed = number of participants available for the analysis.

ArmMeasureValue (MEAN)Dispersion
Concizumab- Main PartChange in D-dimer308 ng/mLStandard Deviation 601
Eptacog Alfa- Main PartChange in D-dimer193 ng/mLStandard Deviation 912
Eptacog Alfa- Main PartChange in D-dimer340 ng/mLStandard Deviation 887
Secondary

Change in D-dimer

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 at least 24 weeks from treatment onset (week 0)

Population: The SAS included all randomised participants. Overall number of participants analysed = number of participants available for analysis.

ArmMeasureValue (MEAN)Dispersion
Concizumab- Main PartChange in D-dimer227 Nanograms per milliliter (ng/mL)Standard Deviation 239
Eptacog Alfa- Main PartChange in D-dimer550 Nanograms per milliliter (ng/mL)Standard Deviation 608
Eptacog Alfa- Main PartChange in D-dimer-48 Nanograms per milliliter (ng/mL)Standard Deviation 614
Secondary

Change in Fibrinogen

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 randomised participants. Overall number of participants analysed = number of participants available for the analysis.

ArmMeasureValue (MEAN)Dispersion
Concizumab- Main PartChange in Fibrinogen-0.14 g/LStandard Deviation 0.51
Eptacog Alfa- Main PartChange in Fibrinogen-0.56 g/LStandard Deviation 0.72
Eptacog Alfa- Main PartChange in Fibrinogen-1.51 g/LStandard Deviation 1.44
Secondary

Change in Fibrinogen

Change in fibrinogen 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 at least 24 weeks from treatment onset (week 0)

Population: The SAS included all randomised participants. Overall number of participants analysed = number of participants available for analysis.

ArmMeasureValue (MEAN)Dispersion
Concizumab- Main PartChange in Fibrinogen-0.24 Grams per liter (g/L)Standard Deviation 0.45
Eptacog Alfa- Main PartChange in Fibrinogen-1.24 Grams per liter (g/L)Standard Deviation 1.61
Eptacog Alfa- Main PartChange in Fibrinogen0.13 Grams per liter (g/L)Standard Deviation 0.48
Secondary

Change in Prothrombin Fragment 1 + 2 (F1 + 2)

Change in F1 + 2 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 randomised participants. Overall number of participants analysed = number of participants available for the analysis.

ArmMeasureValue (MEAN)Dispersion
Concizumab- Main PartChange in Prothrombin Fragment 1 + 2 (F1 + 2)159 pmol/LStandard Deviation 202
Eptacog Alfa- Main PartChange in Prothrombin Fragment 1 + 2 (F1 + 2)457 pmol/LStandard Deviation 458
Eptacog Alfa- Main PartChange in Prothrombin Fragment 1 + 2 (F1 + 2)349 pmol/LStandard Deviation 452
Secondary

Change in Prothrombin Fragment 1 + 2 (F1 + 2)

Change in F1 + 2 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 at least 24 weeks from treatment onset (week 0)

Population: The SAS included all randomised participants. Overall number of participants analysed = number of participants available for analysis.

ArmMeasureValue (MEAN)Dispersion
Concizumab- Main PartChange in Prothrombin Fragment 1 + 2 (F1 + 2)154 Picomoles per liter (pmol/L)Standard Deviation 256
Eptacog Alfa- Main PartChange in Prothrombin Fragment 1 + 2 (F1 + 2)164 Picomoles per liter (pmol/L)Standard Deviation 1
Eptacog Alfa- Main PartChange in Prothrombin Fragment 1 + 2 (F1 + 2)0 Picomoles per liter (pmol/L)Standard Deviation 33
Secondary

Change in Prothrombin Time (PT)

Change in PT 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 at least 24 weeks from treatment onset (week 0)

Population: The SAS included all randomised participants. Overall number of participants analysed = number of participants available for analysis.

ArmMeasureValue (MEAN)Dispersion
Concizumab- Main PartChange in Prothrombin Time (PT)0.2 Seconds (sec)Standard Deviation 0.4
Eptacog Alfa- Main PartChange in Prothrombin Time (PT)-1.0 Seconds (sec)Standard Deviation 1
Eptacog Alfa- Main PartChange in Prothrombin Time (PT)0.0 Seconds (sec)Standard Deviation 0.5
Secondary

Change in Prothrombin Time (PT)

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 randomised participants. Overall number of participants analysed = number of participants available for the analysis.

ArmMeasureValue (MEAN)Dispersion
Concizumab- Main PartChange in Prothrombin Time (PT)-0.4 secStandard Deviation 0.6
Eptacog Alfa- Main PartChange in Prothrombin Time (PT)0.4 secStandard Deviation 0.6
Eptacog Alfa- Main PartChange in Prothrombin Time (PT)0.3 secStandard Deviation 0.5
Secondary

Concentration of Concizumab

Concentration of concizumab prior to the last dose administration after atleast 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 atleast 76 weeks

Population: The FAS included all randomised participants. Overall number of participants analysed = number of participants available for the analysis.

ArmMeasureValue (MEAN)Dispersion
Concizumab- Main PartConcentration of Concizumab205.5 ng/mLStandard Deviation 254.5
Eptacog Alfa- Main PartConcentration of Concizumab1354.7 ng/mLStandard Deviation 1004.3
Eptacog Alfa- Main PartConcentration of Concizumab941.7 ng/mLStandard Deviation 943.1
Secondary

Concentration of Concizumab

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 randomised participants.

ArmMeasureValue (MEAN)Dispersion
Concizumab- Main PartConcentration of Concizumab350.6 ng/mLStandard Deviation 316.8
Eptacog Alfa- Main PartConcentration of Concizumab517.5 ng/mLStandard Deviation 309
Secondary

Endogenous Thrombin Potential

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 randomised participants. Overall number of participants analysed = number of participants available for analysis.

ArmMeasureValue (MEAN)Dispersion
Concizumab- Main PartEndogenous Thrombin Potential901.5 Nanomolar*minute (nM*min)Standard Deviation 347.6
Eptacog Alfa- Main PartEndogenous Thrombin Potential1589.5 Nanomolar*minute (nM*min)Standard Deviation 133.6
Eptacog Alfa- Main PartEndogenous Thrombin Potential228.0 Nanomolar*minute (nM*min)
Secondary

Endogenous Thrombin Potential

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 atleast 76 weeks

Population: The FAS included all randomised participants. Overall number of participants analysed = number of participants available for the analysis.

ArmMeasureValue (MEAN)Dispersion
Concizumab- Main PartEndogenous Thrombin Potential1056.5 nM*minStandard Deviation 438.5
Eptacog Alfa- Main PartEndogenous Thrombin Potential1356.9 nM*minStandard Deviation 223.9
Eptacog Alfa- Main PartEndogenous Thrombin Potential1178.0 nM*minStandard Deviation 184.3
Secondary

Free Tissue Factor Pathway Inhibitor (TFPI) Concentration Value

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 randomised participants. Overall number of participants analysed = number of participants available for analysis.

ArmMeasureValue (MEAN)Dispersion
Concizumab- Main PartFree Tissue Factor Pathway Inhibitor (TFPI) Concentration Value29.9 ng/mLStandard Deviation 9.6
Eptacog Alfa- Main PartFree Tissue Factor Pathway Inhibitor (TFPI) Concentration Value4.8 ng/mLStandard Deviation 0
Eptacog Alfa- Main PartFree Tissue Factor Pathway Inhibitor (TFPI) Concentration Value94.3 ng/mLStandard Deviation 13.8
Secondary

Free Tissue Factor Pathway Inhibitor (TFPI) Concentration Value

Free TFPI concentration value prior to the last dose administration after atleast 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 atleast 76 weeks

Population: The FAS included all randomised participants. Overall number of participants analysed = number of participants available for the analysis.

ArmMeasureValue (MEAN)Dispersion
Concizumab- Main PartFree Tissue Factor Pathway Inhibitor (TFPI) Concentration Value30.3 ng/mLStandard Deviation 28.2
Eptacog Alfa- Main PartFree Tissue Factor Pathway Inhibitor (TFPI) Concentration Value8.3 ng/mLStandard Deviation 4.9
Eptacog Alfa- Main PartFree Tissue Factor Pathway Inhibitor (TFPI) Concentration Value12.2 ng/mLStandard Deviation 12.9
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 the dose level which the participants have reached at the time of event.

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

Population: The safety analysis set (SAS) included all randomised participants.

ArmMeasureValue (NUMBER)
Concizumab- Main PartNumber of Treatment-emergent Adverse Events (TEAEs) During at Least 24 Weeks From Treatment Onset39 events
Eptacog Alfa- Main PartNumber of Treatment-emergent Adverse Events (TEAEs) During at Least 24 Weeks From Treatment Onset4 events
Eptacog Alfa- Main PartNumber of Treatment-emergent Adverse Events (TEAEs) During at Least 24 Weeks From Treatment Onset18 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 the dose level which the participants have reached at the time of event.

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

Population: The SAS included all randomised participants. Overall number of participants analysed = number of participants contributed to the analysis at the particular dose level.

ArmMeasureValue (NUMBER)
Concizumab- Main PartNumber of Treatment-emergent Adverse Events (TEAEs) During at Least 76 Weeks From Treatment Onset104 events
Eptacog Alfa- Main PartNumber of Treatment-emergent Adverse Events (TEAEs) During at Least 76 Weeks From Treatment Onset24 events
Eptacog Alfa- Main PartNumber of Treatment-emergent Adverse Events (TEAEs) During at Least 76 Weeks From Treatment Onset3 events
Secondary

Number of Treatment-emergent Adverse Events (TEAEs) Within 24 Hours After Eptacog Alfa Administration

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 within 24 hours after eptacog alfa administration are presented. This outcome measure is applicable only for 'Eptacog alfa' treatment arm.

Time frame: Within 24 hours after eptacog alfa administration

Population: The SAS included all randomised participants.

ArmMeasureValue (NUMBER)
Concizumab- Main PartNumber of Treatment-emergent Adverse Events (TEAEs) Within 24 Hours After Eptacog Alfa Administration0 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. This outcome measure is applicable for only 'Concizumab' treatment arm.

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

Population: The FAS included all participants who received concizumab.

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Concizumab- Main PartOccurrence of Anti-concizumab Antibodies During at Least 24 Weeks From Treatment OnsetYes3 Participants
Concizumab- Main PartOccurrence of Anti-concizumab Antibodies During at Least 24 Weeks From Treatment OnsetNo14 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. This outcome measure is applicable for only 'Concizumab' treatment arm.

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

Population: The FAS included all participants who received concizumab.

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
Concizumab- Main PartOccurrence of Anti-concizumab Antibodies During at Least 76 Weeks From Treatment OnsetYes6 Participants
Concizumab- Main PartOccurrence of Anti-concizumab Antibodies During at Least 76 Weeks From Treatment OnsetNo19 Participants
Secondary

Peak Thrombin Generation

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 randomised participants. Overall number of participants analysed = number of participants available for analysis.

ArmMeasureValue (MEAN)Dispersion
Concizumab- Main PartPeak Thrombin Generation57.8 Nanomoles per liter (nmol/L)Standard Deviation 28.9
Eptacog Alfa- Main PartPeak Thrombin Generation119.0 Nanomoles per liter (nmol/L)Standard Deviation 12.7
Eptacog Alfa- Main PartPeak Thrombin Generation12.0 Nanomoles per liter (nmol/L)
Secondary

Peak Thrombin Generation

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 atleast 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 atleast 76 weeks

Population: The FAS included all randomised participants. Overall number of participants analysed = number of participants available for the analysis.

ArmMeasureValue (MEAN)Dispersion
Concizumab- Main PartPeak Thrombin Generation79.5 nmol/LStandard Deviation 55.3
Eptacog Alfa- Main PartPeak Thrombin Generation98.7 nmol/LStandard Deviation 20.4
Eptacog Alfa- Main PartPeak Thrombin Generation75.7 nmol/LStandard Deviation 30.6
Secondary

The Number of Bleeding Episodes

The number of bleeding episodes that were treated during at least 76 weeks from treatment onset (week 0) are presented. This outcome measure is applicable for only 'Concizumab' treatment arm.

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

Population: The FAS included all randomised participants.

ArmMeasureValue (NUMBER)
Concizumab- Main PartThe Number of Bleeding Episodes256 episodes
Secondary

The Number of Spontaneous Bleeding Episodes

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 (week 0) are 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 FAS included all randomised participants.

ArmMeasureValue (NUMBER)
Concizumab- Main PartThe Number of Spontaneous Bleeding Episodes36 episodes
Eptacog Alfa- Main PartThe Number of Spontaneous Bleeding Episodes9 episodes
Eptacog Alfa- Main PartThe Number of Spontaneous Bleeding Episodes7 episodes
Secondary

The Number of Spontaneous Bleeding Episodes

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 (week 0) are 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 24 weeks from treatment onset (week 0)

Population: The FAS included all randomised participants.

ArmMeasureValue (NUMBER)
Concizumab- Main PartThe Number of Spontaneous Bleeding Episodes19 episodes
Eptacog Alfa- Main PartThe Number of Spontaneous Bleeding Episodes5 episodes
Eptacog Alfa- Main PartThe Number of Spontaneous Bleeding Episodes69 episodes
Secondary

Thrombin Generation Velocity Index

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 randomised participants. Overall number of participants analysed = number of participants available for analysis.

ArmMeasureValue (MEAN)Dispersion
Concizumab- Main PartThrombin Generation Velocity Index5.3 nM/minStandard Deviation 3.3
Eptacog Alfa- Main PartThrombin Generation Velocity Index14.5 nM/minStandard Deviation 3.5
Eptacog Alfa- Main PartThrombin Generation Velocity Index1.0 nM/min
Secondary

Thrombin Generation Velocity Index

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 atleast 76 weeks

Population: The FAS included all randomised participants. Overall number of participants analysed = number of participants available for the analysis.

ArmMeasureValue (MEAN)Dispersion
Concizumab- Main PartThrombin Generation Velocity Index10.0 nM/minStandard Deviation 12
Eptacog Alfa- Main PartThrombin Generation Velocity Index9.7 nM/minStandard Deviation 3.5
Eptacog Alfa- Main PartThrombin Generation Velocity Index6.7 nM/minStandard Deviation 3.2

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