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Post-Marketing Surveillance To Observe Safety And Efficacy Of Xyntha Solofuse Prefilled Syringe

POST-MARKETING SURVEILLANCE TO OBSERVE SAFETY AND EFFICACY OF XYNTHA SOLOFUSE PREFILLED SYRINGE

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT03034044
Enrollment
106
Registered
2017-01-27
Start date
2017-01-31
Completion date
2018-01-17
Last updated
2023-11-13

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

Conditions

Autosomal Hemophilia A, Classic Hemophilia, Factor 8 Deficiency, Congenital, Factor VIII Deficiency, Congenital, Hemophilia A, Congenital

Brief summary

This study aims to observe the safety and efficacy of the Xyntha Solofuse prefilled syringe in the setting of routine practice. The primary objective is to detect medically significant events (factor VIII inhibitor). The secondary objective is to observe the overall efficacy and safety of the Xyntha Solofuse prefilled syringe including serious adverse events. In this open-label, non-comparative, observational, non-interventional, retrospective and multi-center study, post-marketing surveillance data will be collected retrospectively for up to 6 months from the initial administration day of the Xyntha Solofuse prefilled syringe injected into patients who have been administered the Xyntha Solofuse prefilled syringe. As specified in the product approval issued by the Ministry of Food and Drug Safety, the study will be conducted for 4 years from the approval date. At least 600 study subjects will be enrolled in this study to meet the MFDS requirements. Although 600 is the assigned number of study subjects, the number of cases will be adjusted considering the actual number of enrolled subjects after the study start day.

Interventions

None listed

Sponsors

Pfizer
Lead SponsorINDUSTRY

Study design

Observational model
CASE_ONLY
Time perspective
RETROSPECTIVE

Eligibility

Sex/Gender
ALL
Healthy volunteers
No

Inclusion criteria

-. Inclusion criteria To be eligible to enroll in this study, the study subjects will have to meet all the following inclusion criteria: 1. Hemophilia A (congenital factor VIII deficiency) patients who have been administered according to the indication of the product 1) Control and prevention of bleeding episodes and for routine and surgical prophylaxis in patients with hemophilia A (congenital factor VIII deficiency) 2) This drug does not contain von Willebrand factor and, therefore, is not indicated in von Willebrand's disease 2. Those who have been administered the Xyntha Solofuse prefilled syringe at least once -

Exclusion criteria

Patients who satisfy the following criteria are not included in the study according to the local labeling: 1. Patients who have a history of hypersensitivity to the Xyntha Solofuse prefilled syringe or the ingredients of this drug. 2. Patients who have a history of hypersensitivity to hamster proteins. 3. Patients who have bleeding disorders other than hemophilia A. 4. Patients who have a history of FVIII inhibitors, or currently have or are suspected of having FVIII inhibitors. In case inhibitor titers quantified in Bethesda Units in the laboratory test results are within the normal laboratory range or at least 0.6 BU/mL. If laboratory tests cannot be performed, the investigator will determine whether or not inhibitors exist based on the clinical assessment results that show a decrease in efficacy of the replacement of FVIII (e.g. bleeding at least once, if the replacement of anti-bleeding agents is needed to be administered, and if frequency or dosage of replacement FVIII therapy needs to be increased). 5. Use of immunomodulatory therapy. (e.g. intravenous injection of immunoglobulin, use of regular systemic corticosteroids, cyclosporine, and mediators of anti-TNF-α)

Design outcomes

Primary

MeasureTime frameDescription
Number of Participants With Treatment-Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs)From the first administration of Xyntha up to 6 monthsAn AE was any untoward medical occurrence in participants who received Xyntha without regard to possibility of causal relationship. SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Treatment Emergent Adverse Event (TEAE) was adverse event that started or worsened in severity after first administration of Xyntha Solofuse up to 6 months. AEs included both serious and non-serious adverse event.
Number of Participants With Adverse Events (AEs) by SeverityFrom the first administration of Xyntha up to 6 monthsAn AE was any untoward medical occurrence in participants who received Xyntha without regard to possibility of causal relationship. SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. AEs were classified according to the severity in 3 categories a) mild - AEs does not interfere with participant's usual function b) moderate - AEs interferes to some extent with participant's usual function c) severe - AEs interferes significantly with participant's usual function, and was determined based on investigator's discretion.
Number of Participants Who Discontinued Due to Adverse EventsFrom the first administration of Xyntha up to 6 monthsAn AE was any untoward medical occurrence in participants who received study drug without regard to possibility of causal relationship.
Number of Participants With Treatment-Related Adverse Events (AEs) and Serious Adverse EventsFrom the first administration of Xyntha up to 6 monthsTreatment-related AE was any untoward medical occurrence attributed to Xyntha in a participant who received study drug. SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Relatedness to treatment was assessed by investigator. AEs included both serious and non-serious AEs.
Number of Participants Who Died Due to Adverse EventsFrom the first administration of Xyntha up to 6 monthsAn AE was any untoward medical occurrence in participants who received Xyntha without regard to possibility of causal relationship.
Number of Participants With Overall Responses on a 4-Point Scale to the Injections Used to Treat Bleeding: On-Demand Treatment According to SurgeryFrom the first administration of Xyntha up to 6 monthsOn-demand treatment according to surgery: treatment to increase factor in preparation for surgery. Overall responses to all injection of Xyntha Solofuse prefilled syringe used to treat bleeding in on-demand treatment (administration of an unscheduled dose of Xyntha Solofuse prefilled syringe to stop bleeding) according to surgery was assessed on 4 point scale of 1=excellent, 2=good, 3=moderate and 4=no response, higher score = better response. Excellent= Definite pain relief and/or improvement in signs of bleeding within 8 hours after an infusion, with no additional infusion, good= Definite pain relief and/or improvement in signs of bleeding within 8 hours after an infusion, with 1 additional infusion, moderate= Probable/slight improvement starting after 8 hours following infusion, with \>=1 additional infusion administered for complete resolution of bleeding episode and no response= No improvement at all between infusions/during 24 hour interval following an infusion/condition worsens
Number of Participants With Overall Responses on a 4-Point Scale to the Injections Used to Treat Bleeding: On-Demand Treatment According to BleedingFrom the first administration of Xyntha up to 6 monthsOn-demand treatment according to bleeding: treatment administered for spontaneous bleeding/abrasion; not requiring surgery. Overall responses to all injection of Xyntha used to treat bleeding in on-demand treatment (administration of an unscheduled dose of Xyntha Solofuse prefilled syringe to stop bleeding) according to bleeding was assessed on 4 point scale of 1=excellent, 2=good, 3=moderate,4=no response, higher score=better response. Excellent= Definite pain relief and/or improvement in signs of bleeding within 8 hours after an infusion, with no additional infusion, good= Definite pain relief and/or improvement in signs of bleeding within 8 hours after an infusion, with 1 additional infusion, moderate= Probable/slight improvement after 8 hours following infusion, with \>=1 additional infusion administered for complete resolution of bleeding episode and no response= No improvement at all between infusions/during 24 hour interval following an infusion, or condition worsens.
Number of Participants With Less Than Expected Therapeutic Effect (LETE): On-Demand Treatment According to SurgeryWithin 24 hours of on-demand treatment (anytime within the observation period of 6 months)LETE for on-demand treatment (administration of an unscheduled dose of Xyntha Solofuse prefilled syringe to stop bleeding) was defined as no response rated after each infusion of 2 consecutive infusions within 24 hours after on-demand treatment.
Number of Participants With Less Than Expected Therapeutic Effect (LETE): On-Demand Treatment According to BleedingWithin 24 hours of on-demand treatment (anytime within the observation period of up to 6 months)LETE for on-demand treatment ((administration of an unscheduled dose of Xyntha Solofuse prefilled syringe to stop bleeding) was defined as no response rated after each infusion of 2 consecutive infusions within 24 hours after on-demand treatment) was defined as no response rated after each infusion of 2 consecutive infusions within 24 hours after on-demand treatment.
Number of Infusions Required to Treat Each New Bleeding EpisodeFrom the first administration of Xyntha up to 6 monthsIt was calculated as total number of injections given throughout the study divided by total number of bleeding events.
Average Dose of Infusions Per Bleeding Event: On-Demand Treatment According to SurgeryFrom the first administration of Xyntha up to 6 monthsThe average dose of Xyntha per bleeding event according to surgery in on-demand treatment was calculated as total dose of Xyntha (in IU) throughout the study divided by total number of bleeding event. On-demand treatment (administration of an unscheduled dose of Xyntha Solofuse prefilled syringe to stop bleeding) according to surgery means treatment to increase factor in preparation for surgery.
Average Dose of Infusions Per Bleeding Event: On-Demand Treatment According to BleedingFrom the first administration of Xyntha up to 6 monthsThe average dose of Xyntha per bleeding event was calculated as total dose of Xyntha throughout the study (in International Units \[IU\]) divided by total number of bleeding incidence. On-demand treatment (administration of an unscheduled dose of Xyntha Solofuse prefilled syringe to stop bleeding) according to bleeding means treatment administered due to spontaneous bleeding or abrasion.
Percentage of Participants With Bleeding EventFrom the first administration of Xyntha up to 6 months
Annualized Bleeding Rates (ABRs)Within 48 hours after the prophylactic administration of Xyntha (within the duration of 6 months)Annualized bleeding rate defined as number of bleeds under prophylactic setting (defined as bleeding occurred after 48 hours of prophylactic therapy \[administration of Xyntha not for the treatment of a bleed but for the prevention of bleeding\]) divided by (/) \[(number of prophylactic therapy participants)\*0.5)\]
Number of Participants With Less Than Expected Therapeutic Effect (LETE): Prophylactic TherapyFrom the first administration of Xyntha up to 6 monthsLess than expected therapeutic effect for prophylaxis therapy defined as breakthrough (spontaneous/non-traumatic) bleeding occurred within 48 hours of prophylaxis infusion (defined as: administration of Xyntha not for the treatment of a bleed but for the prevention of bleeding).
Average Dose of Infusions Per Bleeding Event: Prophylactic TherapyFrom the first administration of Xyntha up to 6 monthsThe average dose of Xyntha per bleeding event according to prophylaxis therapy treatment was calculated as total dose of Xyntha (in IU) throughout the study divided by total number of bleeding event. Prophylaxis therapy defined as breakthrough (spontaneous/non-traumatic) bleeding occurred within 48 hours of prophylaxis infusion (defined as administration of Xyntha not for the treatment of a bleed but for the prevention of bleeding).
Total Factor VIII Consumption6 monthsTotal factor VIII consumption for each participant was calculated by sum of the total amount of Xyntha Solofuse (in IU) infused for each Xyntha Solofuse infusion.

Participant flow

Participants by arm

ArmCount
Xyntha
Participants who were prescribed with Xyntha Solofuse prefilled syringe, as part of routine treatment, were observed in this study for up to 6 months from the initial administration of Xyntha Solofuse.
105
Total105

Withdrawals & dropouts

PeriodReasonFG000
Overall StudyEnrolled, but not received Xyntha1

Baseline characteristics

CharacteristicXyntha
Age, Customized
30- 39 years
29 Participants
Age, Customized
< 30 years
19 Participants
Age, Customized
40- 49 years
39 Participants
Age, Customized
50- 59 years
11 Participants
Age, Customized
>= 60 years
7 Participants
Concomitant therapy
No
103 Participants
Concomitant therapy
Yes
2 Participants
Concomitant treatments
No
69 Participants
Concomitant treatments
Yes
36 Participants
Disease severity
Mild
13 Participants
Disease severity
Moderate
8 Participants
Disease severity
Severe
80 Participants
Disease severity
Unknown
4 Participants
Duration of the disease, Continuous32.4 Years
STANDARD_DEVIATION 16.9
Family history of allergic reactions to factor VIII products
No
105 Participants
Family history of allergic reactions to factor VIII products
Yes
0 Participants
Family history of factor VIII inhibitors
No
105 Participants
Family history of factor VIII inhibitors
Yes
0 Participants
Family history of hemophilia A
No
82 Participants
Family history of hemophilia A
Yes
23 Participants
Genetic mutation of factor VIII
No
36 Participants
Genetic mutation of factor VIII
Unknown
69 Participants
Genetic mutation of factor VIII
Yes
0 Participants
Hepatic Disorder
No
88 Participants
Hepatic Disorder
Yes
17 Participants
Medical history
No
60 Participants
Medical history
Yes
45 Participants
Personal history of allergic reactions to factor VIII products
No
105 Participants
Personal history of allergic reactions to factor VIII products
Yes
0 Participants
Personal History of Allergic Reactions to Factor VIII Products (within 12 months)
No
103 Participants
Personal History of Allergic Reactions to Factor VIII Products (within 12 months)
Yes
2 Participants
Previous exposure to plasma-derived factor VIII
No
34 Participants
Previous exposure to plasma-derived factor VIII
Unknown
20 Participants
Previous exposure to plasma-derived factor VIII
Yes
51 Participants
Previous used factor VIII therapy
No
12 Participants
Previous used factor VIII therapy
Yes
93 Participants
Race and Ethnicity Not Collected— Participants
Renal Disorder
No
103 Participants
Renal Disorder
Yes
2 Participants
Sex: Female, Male
Female
0 Participants
Sex: Female, Male
Male
105 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
22 / 105
other
Total, other adverse events
15 / 105
serious
Total, serious adverse events
0 / 105

Outcome results

Primary

Annualized Bleeding Rates (ABRs)

Annualized bleeding rate defined as number of bleeds under prophylactic setting (defined as bleeding occurred after 48 hours of prophylactic therapy \[administration of Xyntha not for the treatment of a bleed but for the prevention of bleeding\]) divided by (/) \[(number of prophylactic therapy participants)\*0.5)\]

Time frame: Within 48 hours after the prophylactic administration of Xyntha (within the duration of 6 months)

Population: The efficacy analysis set included all participants who received at least one dose of Xyntha Solofuse prefilled syringe. Here, Overall Number of Participants Analyzed signifies those participants who were evaluable for this outcome measure.

ArmMeasureValue (NUMBER)
XynthaAnnualized Bleeding Rates (ABRs)13.33 bleeds per participant
Primary

Average Dose of Infusions Per Bleeding Event: On-Demand Treatment According to Bleeding

The average dose of Xyntha per bleeding event was calculated as total dose of Xyntha throughout the study (in International Units \[IU\]) divided by total number of bleeding incidence. On-demand treatment (administration of an unscheduled dose of Xyntha Solofuse prefilled syringe to stop bleeding) according to bleeding means treatment administered due to spontaneous bleeding or abrasion.

Time frame: From the first administration of Xyntha up to 6 months

Population: The efficacy analysis set included all participants who received at least one dose of Xyntha Solofuse prefilled syringe. Here, Overall Number of Participants Analyzed signifies those participants who were evaluable for this outcome measure.

ArmMeasureValue (MEAN)Dispersion
XynthaAverage Dose of Infusions Per Bleeding Event: On-Demand Treatment According to Bleeding2140.08 IU/eventStandard Deviation 640.32
Primary

Average Dose of Infusions Per Bleeding Event: On-Demand Treatment According to Surgery

The average dose of Xyntha per bleeding event according to surgery in on-demand treatment was calculated as total dose of Xyntha (in IU) throughout the study divided by total number of bleeding event. On-demand treatment (administration of an unscheduled dose of Xyntha Solofuse prefilled syringe to stop bleeding) according to surgery means treatment to increase factor in preparation for surgery.

Time frame: From the first administration of Xyntha up to 6 months

Population: The efficacy analysis set included all participants who received at least one dose of Xyntha Solofuse prefilled syringe. Here, Overall Number of Participants Analyzed signifies those participants who were evaluable for this outcome measure.

ArmMeasureValue (MEAN)Dispersion
XynthaAverage Dose of Infusions Per Bleeding Event: On-Demand Treatment According to Surgery2619.29 IU/eventStandard Deviation 1089.07
Primary

Average Dose of Infusions Per Bleeding Event: Prophylactic Therapy

The average dose of Xyntha per bleeding event according to prophylaxis therapy treatment was calculated as total dose of Xyntha (in IU) throughout the study divided by total number of bleeding event. Prophylaxis therapy defined as breakthrough (spontaneous/non-traumatic) bleeding occurred within 48 hours of prophylaxis infusion (defined as administration of Xyntha not for the treatment of a bleed but for the prevention of bleeding).

Time frame: From the first administration of Xyntha up to 6 months

Population: The efficacy analysis set included all participants who received at least one dose of Xyntha Solofuse prefilled syringe. Here, Overall Number of Participants Analyzed signifies those participants who were evaluable for this outcome measure.

ArmMeasureValue (MEAN)Dispersion
XynthaAverage Dose of Infusions Per Bleeding Event: Prophylactic Therapy1881.33 IU/eventStandard Deviation 531.88
Primary

Number of Infusions Required to Treat Each New Bleeding Episode

It was calculated as total number of injections given throughout the study divided by total number of bleeding events.

Time frame: From the first administration of Xyntha up to 6 months

Population: The efficacy analysis set included all participants who received at least one dose of Xyntha Solofuse prefilled syringe. Here, Overall Number of Participants Analyzed signifies those participants who were evaluable for this outcome measure.

ArmMeasureValue (MEAN)Dispersion
XynthaNumber of Infusions Required to Treat Each New Bleeding Episode1.22 InfusionsStandard Deviation 0.57
Primary

Number of Participants Who Died Due to Adverse Events

An AE was any untoward medical occurrence in participants who received Xyntha without regard to possibility of causal relationship.

Time frame: From the first administration of Xyntha up to 6 months

Population: The safety population included all participants who received at least one dose of Xyntha Solofuse prefilled syringe.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
XynthaNumber of Participants Who Died Due to Adverse Events0 Participants
Primary

Number of Participants Who Discontinued Due to Adverse Events

An AE was any untoward medical occurrence in participants who received study drug without regard to possibility of causal relationship.

Time frame: From the first administration of Xyntha up to 6 months

Population: The safety population included all participants who received at least one dose of Xyntha Solofuse prefilled syringe.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
XynthaNumber of Participants Who Discontinued Due to Adverse Events0 Participants
Primary

Number of Participants With Adverse Events (AEs) by Severity

An AE was any untoward medical occurrence in participants who received Xyntha without regard to possibility of causal relationship. SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. AEs were classified according to the severity in 3 categories a) mild - AEs does not interfere with participant's usual function b) moderate - AEs interferes to some extent with participant's usual function c) severe - AEs interferes significantly with participant's usual function, and was determined based on investigator's discretion.

Time frame: From the first administration of Xyntha up to 6 months

Population: The safety population included all participants who received at least one dose of Xyntha Solofuse prefilled syringe. Here, Overall Number of Participants Analyzed signifies those participants who were evaluable for this outcome measure.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
XynthaNumber of Participants With Adverse Events (AEs) by SeverityMild10 Participants
XynthaNumber of Participants With Adverse Events (AEs) by SeverityModerate5 Participants
XynthaNumber of Participants With Adverse Events (AEs) by SeveritySevere0 Participants
Primary

Number of Participants With Less Than Expected Therapeutic Effect (LETE): On-Demand Treatment According to Bleeding

LETE for on-demand treatment ((administration of an unscheduled dose of Xyntha Solofuse prefilled syringe to stop bleeding) was defined as no response rated after each infusion of 2 consecutive infusions within 24 hours after on-demand treatment) was defined as no response rated after each infusion of 2 consecutive infusions within 24 hours after on-demand treatment.

Time frame: Within 24 hours of on-demand treatment (anytime within the observation period of up to 6 months)

Population: The efficacy analysis set included all participants who received at least one dose of Xyntha Solofuse prefilled syringe. Here, Overall Number of Participants Analyzed signifies those participants who were evaluable for this outcome measure.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
XynthaNumber of Participants With Less Than Expected Therapeutic Effect (LETE): On-Demand Treatment According to Bleeding0 Participants
Primary

Number of Participants With Less Than Expected Therapeutic Effect (LETE): On-Demand Treatment According to Surgery

LETE for on-demand treatment (administration of an unscheduled dose of Xyntha Solofuse prefilled syringe to stop bleeding) was defined as no response rated after each infusion of 2 consecutive infusions within 24 hours after on-demand treatment.

Time frame: Within 24 hours of on-demand treatment (anytime within the observation period of 6 months)

Population: The efficacy analysis set included all participants who received at least one dose of Xyntha Solofuse prefilled syringe. Here, Overall Number of Participants Analyzed signifies those participants who were evaluable for this outcome measure.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
XynthaNumber of Participants With Less Than Expected Therapeutic Effect (LETE): On-Demand Treatment According to Surgery0 Participants
Primary

Number of Participants With Less Than Expected Therapeutic Effect (LETE): Prophylactic Therapy

Less than expected therapeutic effect for prophylaxis therapy defined as breakthrough (spontaneous/non-traumatic) bleeding occurred within 48 hours of prophylaxis infusion (defined as: administration of Xyntha not for the treatment of a bleed but for the prevention of bleeding).

Time frame: From the first administration of Xyntha up to 6 months

Population: The efficacy analysis set included all participants who received at least one dose of Xyntha Solofuse prefilled syringe. Here, Overall Number of Participants Analyzed signifies those participants who were evaluable for this outcome measure.

ArmMeasureValue (COUNT_OF_PARTICIPANTS)
XynthaNumber of Participants With Less Than Expected Therapeutic Effect (LETE): Prophylactic Therapy6 Participants
Primary

Number of Participants With Overall Responses on a 4-Point Scale to the Injections Used to Treat Bleeding: On-Demand Treatment According to Bleeding

On-demand treatment according to bleeding: treatment administered for spontaneous bleeding/abrasion; not requiring surgery. Overall responses to all injection of Xyntha used to treat bleeding in on-demand treatment (administration of an unscheduled dose of Xyntha Solofuse prefilled syringe to stop bleeding) according to bleeding was assessed on 4 point scale of 1=excellent, 2=good, 3=moderate,4=no response, higher score=better response. Excellent= Definite pain relief and/or improvement in signs of bleeding within 8 hours after an infusion, with no additional infusion, good= Definite pain relief and/or improvement in signs of bleeding within 8 hours after an infusion, with 1 additional infusion, moderate= Probable/slight improvement after 8 hours following infusion, with \>=1 additional infusion administered for complete resolution of bleeding episode and no response= No improvement at all between infusions/during 24 hour interval following an infusion, or condition worsens.

Time frame: From the first administration of Xyntha up to 6 months

Population: The efficacy analysis set included all participants who received at least one dose of Xyntha Solofuse prefilled syringe. Here, Overall Number of Participants Analyzed signifies those participants who were evaluable for this outcome measure.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
XynthaNumber of Participants With Overall Responses on a 4-Point Scale to the Injections Used to Treat Bleeding: On-Demand Treatment According to BleedingExcellent28 Participants
XynthaNumber of Participants With Overall Responses on a 4-Point Scale to the Injections Used to Treat Bleeding: On-Demand Treatment According to BleedingGood3 Participants
XynthaNumber of Participants With Overall Responses on a 4-Point Scale to the Injections Used to Treat Bleeding: On-Demand Treatment According to BleedingModerate0 Participants
XynthaNumber of Participants With Overall Responses on a 4-Point Scale to the Injections Used to Treat Bleeding: On-Demand Treatment According to BleedingNo response0 Participants
Primary

Number of Participants With Overall Responses on a 4-Point Scale to the Injections Used to Treat Bleeding: On-Demand Treatment According to Surgery

On-demand treatment according to surgery: treatment to increase factor in preparation for surgery. Overall responses to all injection of Xyntha Solofuse prefilled syringe used to treat bleeding in on-demand treatment (administration of an unscheduled dose of Xyntha Solofuse prefilled syringe to stop bleeding) according to surgery was assessed on 4 point scale of 1=excellent, 2=good, 3=moderate and 4=no response, higher score = better response. Excellent= Definite pain relief and/or improvement in signs of bleeding within 8 hours after an infusion, with no additional infusion, good= Definite pain relief and/or improvement in signs of bleeding within 8 hours after an infusion, with 1 additional infusion, moderate= Probable/slight improvement starting after 8 hours following infusion, with \>=1 additional infusion administered for complete resolution of bleeding episode and no response= No improvement at all between infusions/during 24 hour interval following an infusion/condition worsens

Time frame: From the first administration of Xyntha up to 6 months

Population: The efficacy analysis set included all participants who received at least one dose of Xyntha Solofuse prefilled syringe. Here, Overall Number of Participants Analyzed signifies those participants who were evaluable for this outcome measure.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
XynthaNumber of Participants With Overall Responses on a 4-Point Scale to the Injections Used to Treat Bleeding: On-Demand Treatment According to SurgeryExcellent6 Participants
XynthaNumber of Participants With Overall Responses on a 4-Point Scale to the Injections Used to Treat Bleeding: On-Demand Treatment According to SurgeryGood0 Participants
XynthaNumber of Participants With Overall Responses on a 4-Point Scale to the Injections Used to Treat Bleeding: On-Demand Treatment According to SurgeryModerate0 Participants
XynthaNumber of Participants With Overall Responses on a 4-Point Scale to the Injections Used to Treat Bleeding: On-Demand Treatment According to SurgeryNo response0 Participants
Primary

Number of Participants With Treatment-Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs)

An AE was any untoward medical occurrence in participants who received Xyntha without regard to possibility of causal relationship. SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Treatment Emergent Adverse Event (TEAE) was adverse event that started or worsened in severity after first administration of Xyntha Solofuse up to 6 months. AEs included both serious and non-serious adverse event.

Time frame: From the first administration of Xyntha up to 6 months

Population: The safety population included all participants who received at least one dose of Xyntha Solofuse prefilled syringe.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
XynthaNumber of Participants With Treatment-Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs)AEs15 Participants
XynthaNumber of Participants With Treatment-Emergent Adverse Events (AEs) and Serious Adverse Events (SAEs)SAEs0 Participants
Primary

Number of Participants With Treatment-Related Adverse Events (AEs) and Serious Adverse Events

Treatment-related AE was any untoward medical occurrence attributed to Xyntha in a participant who received study drug. SAE was an AE resulting in any of the following outcomes or deemed significant for any other reason: death; initial or prolonged inpatient hospitalization; life-threatening experience (immediate risk of dying); persistent or significant disability/incapacity; congenital anomaly. Relatedness to treatment was assessed by investigator. AEs included both serious and non-serious AEs.

Time frame: From the first administration of Xyntha up to 6 months

Population: The safety population included all participants who received at least one dose of Xyntha Solofuse prefilled syringe.

ArmMeasureGroupValue (COUNT_OF_PARTICIPANTS)
XynthaNumber of Participants With Treatment-Related Adverse Events (AEs) and Serious Adverse EventsAEs2 Participants
XynthaNumber of Participants With Treatment-Related Adverse Events (AEs) and Serious Adverse EventsSAEs0 Participants
Primary

Percentage of Participants With Bleeding Event

Time frame: From the first administration of Xyntha up to 6 months

Population: The efficacy analysis set included all participants who received at least one dose of Xyntha Solofuse prefilled syringe. Here, Overall Number of Participants Analyzed signifies those participants who were evaluable for this outcome measure.

ArmMeasureValue (NUMBER)
XynthaPercentage of Participants With Bleeding Event6.67 percentage of participants
Primary

Total Factor VIII Consumption

Total factor VIII consumption for each participant was calculated by sum of the total amount of Xyntha Solofuse (in IU) infused for each Xyntha Solofuse infusion.

Time frame: 6 months

Population: The efficacy analysis set included all participants who received at least one dose of Xyntha Solofuse prefilled syringe. Here, Overall Number of Participants Analyzed signifies those participants who were evaluable for this outcome measure.

ArmMeasureValue (MEAN)Dispersion
XynthaTotal Factor VIII Consumption106116.16 IUStandard Deviation 55747.74

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026