ClinicalTrials.gg
CompletedNCT02690714Updated Aug 2, 2021Results posted

A Study of Prometic Plasminogen IV Infusion in Subjects With Hypoplasminogenemia

A Phase 2/3 interventional study of Plasminogen (Human) intravenous in Hypoplasminogenemia and Congenital Plasminogen Deficiency, sponsored by Prometic Biotherapeutics, Inc.. Completed at 2 sites in 2 countries. Open to participants aged 2 Years to 80 Years. Per ClinicalTrials.gov, last updated 2021-08-02.

Sponsored by Prometic Biotherapeutics, Inc. · Phase 2/3, Interventional, and Treatment

Phase
Phase 2/3
Study type
Interventional
Enrollment
15
Allocation
Not applicable
Ages
2 Years to 80 Years
Sex
All
01

Study summary

This is a Phase 2/3 pivotal study to evaluate pharmacokinetics (PK), efficacy, and safety of Prometic Plasminogen (Human) Intravenous Lyophilized Solution, the investigational medicinal product (IMP), in pediatric and adult subjects with hypoplasminogenemia.

Read the detailed description

This is a Phase 2/3, open-label, repeat-dose study of the PK, efficacy, and safety of the IMP, in pediatric and adult subjects with hypoplasminogenemia. The study consists of a screening period and 3 treatment segments (Segment 1,2, and 3). Subjects who have documented individual PK profiles do not need to undergo Segment 1 and can proceed directly to Segment 2. Subjects in Segment 1 will receive a single dose of 6.6 mg/kg IMP infusion. Blood samples for PK analysis will be drawn prior to infusion and subsequently through 96 hours after the infusion to establish individual PK profiles. The sample drawn prior to infusion will be used to measure the subject's baseline anti-plasminogen antibody, plasminogen activity and antigen as well as D-dimer levels. The resulting PK profile will be used to determine each subject's dosing interval in Segment 2.

Based on individual PK profiles from Segment 1 subjects will receive 6.6 mg/kg IMP infusion every second, third, or fourth day for 12 weeks in Segment 2. For subjects who directly enter Segment 2, baseline assessments will be conducted before the first dose of IMP, including a blood sample to measure the baseline anti-plasminogen antibody, plasminogen activity and antigen as well as D-dimer levels. Subjects will visit the study sites on Week 1 and subsequently every 4 weeks, and receive the IMP infusion at the study site. Blood samples will be obtained at each study visit at Weeks 4, 8 and 12 and by a home health nurse at Weeks 2, 6 and 10. Subjects will undergo clinical assessments of the disease, including but not limited to: photographic measurements of visible lesions, spirometry for subjects with pulmonary involvement, and imaging study of nonvisible lesions, as applicable. Plasma samples will be drawn before IMP administration every 2 weeks to measure the trough levels of plasminogen activity and antigen, and D-dimer.

At the end of Segment 2, subjects will have the option to participate in Segment 3 where they will continue to receive IMP for an additional 36 weeks in Norway, and until product licensing or study termination by the sponsor for subjects in the United States. Subjects will return to the study sites for assessments every 3 months to monitor subjects' clinical status and plasminogen trough levels. Subjects at the Norway site in Segment 3 should return to the study site for a safety follow-up visit 30 days after the final IMP dose. Due to the delay in product approval, subjects at the US site in Segment 3 will be allowed to enroll in treatment protocol 2002C018G and continue ongoing IMP treatment without any break in treatment. If subjects decide to not enter treatment protocol 2002C018G, then they will stop IMP and return to the study site for a safety follow-up visit 30 days after the final IMP dose.

The primary objective of this study is to achieve an increase of individual trough plasminogen activity by at least an absolute 10% (i.e., 10 U/dL) from baseline during the 12 weeks of plasminogen replacement therapy in Segment 2; and to evaluate the efficacy of plasminogen replacement therapy on clinically evident or visible symptoms of hypoplasminogenemia during the 48 weeks of dosing in Segments 2 and 3.

02

Conditions studied

  • Hypoplasminogenemia
  • Congenital Plasminogen Deficiency
03

In context

Lead sponsor

Prometic Biotherapeutics, Inc. is the lead sponsor of 5 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
2 Years to 80 Years
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Subject is a male or female between the ages of 2 and 80 years (inclusive), is able to provide or assent, and agrees to use methods during the study (unless documented as biologically or surgically sterile or has not reached reproductive age).
  • Subject has documented history of hypoplasminogenemia and has plasminogen activity level ≤ 45%.
  • Subject had a documented history of lesions and symptoms consistent with a diagnosis of congenital plasminogen deficiency.
  • Subject has documented vaccination to hepatitis A virus (HAV) and virus (HBV), or has received the first dose of HAV and HBV vaccine prior to the first dose of IMP and is scheduled to receive the second vaccine dose.

Exclusion criteria

Exclusion Criteria:

  • Subject has uncontrolled hypertension; clinical or laboratory evidence of an intercurrent infection; a within 3 years, except for basal or squamous cell skin cancer; a psychiatric disorder; chronic or acute inter-current illness; or evidence of renal and hepatic dysfunction.
  • Subject is pregnant or lactating
  • Subject has a history of anaphylactic reactions to blood or blood products that may interfere with participation in study in the opinion of the investigator.
  • Subject is a previous organ transplant recipient; has received exogenous plasminogen within 2 weeks of the screening; has a history of anaphylactic reactions to blood or blood products; or has received another IRB-approved interventional clinical trial of a drug, biologic, or device within 30 days before the first dose of the IMP.
Terms in these criteria, in plain language(5)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

Clinically significant

Judged by the study doctor to matter for your health or for the study. It is a doctor’s decision, so ask the study team if you are unsure whether something counts.

05

Study design

Phase
Phase 2 / Phase 3
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
15 participants (actual)

Study arms

  • Experimental
    6.6 mg/kg Plasminogen (Human) Intravenous

    6.6 mg/kg Plasminogen (Human) Intravenous given every 2 to 4 days by a 10- to 30-minute intravenous infusion

    Biological: Plasminogen (Human) intravenous

Interventions

  • Prometic Plasminogen (Human) intravenous infusion given as single dose of 6.6 mg/kg in Segment 1 and repeat doses in Segments 2 and 3.

06

What researchers measure

Primary outcomes

  1. Overall Clinical Success in Number and Size of Lesions as Measured by Photographic or Other Imaging Modality Depending on the Organ System Affected or Change in Affected Organ Functionality at 48 Weeks.

    Overall clinical success was defined as 50% of participants with visible or other measurable lesions achieving at least a 50% improvement in lesion number/size or functionality impact from baseline. Visible lesions were defined as lesions that could be imaged and analyzed with digital photography. Non-visible lesions were defined as lesions whose dimensions could have been assessed by medical imaging studies (eg, computed tomography, magnetic resonance imaging, ultrasound, etc) or functional assessments (eg, spirometry, audiogram, oximetry, etc).Visible lesions that had both a length and width as measured by the 1mm scale, were referred to as "measurable lesions", and visible lesions that were too small to measure by the 1mm scale (length and/or width could not have been measured) were referred to as "non-measurable lesions".

    Time frame: 48 weeks

  2. Number and Percentage of Particpants Who Achieved the Target Plasminogen Activity Trough Levels for at Least 3 Measurements in 12 Weeks During Segment 2

    Plasminogen activity is a measurement of functional plasminogen levels and is therefore the most accurate and specific method to quantify active Plasminogen (Human) Intravenous concentration in participants' plasma. Primary endpoint success was defined as at least 80% of evaluable participants (ie, 8 or more) achieving the target trough levels for at least 3 measurements in 12 weeks. The target trough level was defined as an increase in plasminogen activity level of at least an absolute 10% (10 U/dL) from the participant's individual baseline level.

    Time frame: 12 weeks

Secondary outcomes

  1. Overall Clinical Success in Number and Size of Lesions as Measured by Photographic or Other Imaging Modality Depending on the Organ System Affected or Change in Affected Organ Functionality at 12 Weeks

    Overall clinical success was defined as 50% of participants with visible or other measurable lesions achieving at least a 50% improvement in lesion number/size or functionality impact from baseline. Visible lesions were defined as lesions that could be imaged and analyzed with digital photography. Non-visible lesions were defined as lesions whose dimensions could have been assessed by medical imaging studies (eg, computed tomography, magnetic resonance imaging, ultrasound, etc) or functional assessments (eg, spirometry, audiogram, oximetry, etc).Visible lesions that had both a length and width as measured by the 1mm scale, were referred to as "measurable lesions", and visible lesions that were too small to measure by the 1mm scale (length and/or width could not have been measured) were referred to as "non-measurable lesions".

    Time frame: 12 Weeks

  2. Clinical Global Impression-Global Improvement (CGI-I) Scores at Week 12

    CGI-I scores are measured at 12 and 48 weeks after study drug treatment. The CGI-I Scale is a single, clinician completed scale designed to capture the clinician's impression of the participant's disease improvement over time. For this scale, clinicians were asked to consider their experience in this population and rate the change relative to the participant's state at Baseline using a 7-point scale (1 = very much improved, 7 = very much worse).

    Time frame: 12 weeks

  3. Clinical Global Impression-Global Improvement (CGI-I) Scores at Week 48

    CGI-I scores are measured at 12 and 48 weeks after study drug treatment. The CGI-I Scale is a single, clinician completed scale designed to capture the clinician's impression of the participant's disease improvement over time. For this scale, clinicians were asked to consider their experience in this population and rate the change relative to the participant's state at Baseline using a 7-point scale (1 = very much improved, 7 = very much worse).

    Time frame: 48 Weeks

  4. Number of Participants With Improved Quality of Life (QOL) Score After 12 Weeks of Study Treatment

    Quality of life score (QOL) was measured at baseline and at 12 and 48 weeks after study drug treatment. For the QOL assessment, participants were asked to rate their overall QOL using an 11-point scale (0 = non-functioning, 10 = normal; The QOL scale was adapted from a scale developed by the American Chronic Pain Association.

    Time frame: 12 weeks

  5. Number of Participants With Improved Quality of Life (QOL) Score After 48 Weeks of Study Treatment

    Quality of life score (QOL) was measured at baseline and at 12 and 48 weeks after study drug treatment. For the QOL assessment, participants were asked to rate their overall QOL using an 11-point scale (0 = non-functioning, 10 = normal; The QOL scale was adapted from a scale developed by the American Chronic Pain Association.

    Time frame: 48 weeks

  6. Plasminogen Activity Trough Levels Between Week 2 and Week 120

    Plasminogen activity trough levels were measured at Weeks 2, 4, 6, 8, 10, 12, 24, 36, 48, 60, 72, 84, 96, 108, and 120.

    Time frame: Week 2 to Week 120

  7. Plasminogen Antigen Trough Levels Between Week 2 and Week 120

    Plasminogen antigen trough levels were measured at Weeks 2, 4, 6, 8, 10, 12, 24, 36, 48, 60, 72, 84, 96, 108, and 120.

    Time frame: Week 2 to Week 120

  8. Half-life (t1/2) of Plasminogen Activity After First Dose and at Week 12

    t1/2 is time required for the plasma concentration of Plasminogen to decrease 50% in the final stage of its elimination

    Time frame: First dose and 12 weeks

  9. AUClast of Plasminogen Activity After the First Dose and at Week 12

    AUCLast is the area under the plasma concentration-curve of Plasminogen from time 0 to the last measured concentration.

    Time frame: First dose and 12 weeks

  10. Cmax of Plasminogen Activity After First Dose and at Week 12

    Cmax is the maximum plasma concentration of Plasminogen

    Time frame: First dose and 12 weeks

  11. Cl of Plasminogen Activity After First Dose and at Week 12

    Cl is the volume of plasma cleared of Plasminogen per unit time

    Time frame: First dose and 12 weeks

  12. AUCinf of Plasminogen Activity After First Dose and at Week 12

    AUCinf is the area under the plasma concentration-curve of Plasminogen from time 0 extrapolated to infinity

    Time frame: First dose and 12 weeks

  13. MRTlast for Plasminogen Activity After First Dose and at Week 12

    MRTLast is the mean residence time of Plasminogen from time 0 to the last measured concentration

    Time frame: First dose and 12 weeks

  14. Vss for Plasminogen Activity After First Dose and at Week 12

    Vss is the apparent volume of distribution at steady state of Plasminogen

    Time frame: First dose and 12 weeks

07

Results

Posted Apr 19, 2021

Participant flow

This study was conducted at 2 sites, 1 in the United States (US) and 1 in Norway. The first participant was screened in May 2016 and the last participant visit was in October 2018.

Segment 1: Single-dose Day -4 to Day 0
Participant flow — Segment 1: Single-dose Day -4 to Day 0
Milestone6.6 mg/kg Plasminogen (Human) Intravenous
Started9
Completed9
Not completed0
Segment 2: Multi-dose Day 0 to Week 12
Participant flow — Segment 2: Multi-dose Day 0 to Week 12
Milestone6.6 mg/kg Plasminogen (Human) Intravenous
Started15
Completed15
Not completed0
Segment 3: Extended Treatment Wks 12-48
Participant flow — Segment 3: Extended Treatment Wks 12-48
Milestone6.6 mg/kg Plasminogen (Human) Intravenous
Started15
Completed15
Not completed0
Post-Wk 48: Safety Week 48 to EoS Visit
Participant flow — Post-Wk 48: Safety Week 48 to EoS Visit
Milestone6.6 mg/kg Plasminogen (Human) Intravenous
Started12
Completed10
Not completed2
Withdrew: Physician decision1
Withdrew: Withdrawal by subject1

Outcome measures

PrimaryOverall Clinical Success in Number and Size of Lesions as Measured by Photographic or Other Imaging Modality Depending on the Organ System Affected or Change in Affected Organ Functionality at 48 Weeks.

Overall clinical success was defined as 50% of participants with visible or other measurable lesions achieving at least a 50% improvement in lesion number/size or functionality impact from baseline. Visible lesions were defined as lesions that could be imaged and analyzed with digital photography. Non-visible lesions were defined as lesions whose dimensions could have been assessed by medical imaging studies (eg, computed tomography, magnetic resonance imaging, ultrasound, etc) or functional assessments (eg, spirometry, audiogram, oximetry, etc).Visible lesions that had both a length and width as measured by the 1mm scale, were referred to as "measurable lesions", and visible lesions that were too small to measure by the 1mm scale (length and/or width could not have been measured) were referred to as "non-measurable lesions".

Time frame:
48 weeks
Reported as:
Count of units · Lesions
Overall Clinical Success in Number and Size of Lesions as Measured by Photographic or Other Imaging Modality Depending on the Organ System Affected or Change in Affected Organ Functionality at 48 Weeks.
LesionsPlasminogen (Human) Intravenous
Total Visible/Non-Visible lesions resolved (%)34
Total Visible/Non-Visible lesions improved (%)10
Not applicable (not assessed)3
PrimaryNumber and Percentage of Particpants Who Achieved the Target Plasminogen Activity Trough Levels for at Least 3 Measurements in 12 Weeks During Segment 2

Plasminogen activity is a measurement of functional plasminogen levels and is therefore the most accurate and specific method to quantify active Plasminogen (Human) Intravenous concentration in participants' plasma. Primary endpoint success was defined as at least 80% of evaluable participants (ie, 8 or more) achieving the target trough levels for at least 3 measurements in 12 weeks. The target trough level was defined as an increase in plasminogen activity level of at least an absolute 10% (10 U/dL) from the participant's individual baseline level.

Time frame:
12 weeks
Reported as:
Count of participants · Participants
Number and Percentage of Particpants Who Achieved the Target Plasminogen Activity Trough Levels for at Least 3 Measurements in 12 Weeks During Segment 2
ParticipantsPlasminogen (Human) Intravenous
Number and Percentage of Particpants Who Achieved the Target Plasminogen Activity Trough Levels for at Least 3 Measurements in 12 Weeks During Segment 215
SecondaryOverall Clinical Success in Number and Size of Lesions as Measured by Photographic or Other Imaging Modality Depending on the Organ System Affected or Change in Affected Organ Functionality at 12 Weeks

Overall clinical success was defined as 50% of participants with visible or other measurable lesions achieving at least a 50% improvement in lesion number/size or functionality impact from baseline. Visible lesions were defined as lesions that could be imaged and analyzed with digital photography. Non-visible lesions were defined as lesions whose dimensions could have been assessed by medical imaging studies (eg, computed tomography, magnetic resonance imaging, ultrasound, etc) or functional assessments (eg, spirometry, audiogram, oximetry, etc).Visible lesions that had both a length and width as measured by the 1mm scale, were referred to as "measurable lesions", and visible lesions that were too small to measure by the 1mm scale (length and/or width could not have been measured) were referred to as "non-measurable lesions".

Time frame:
12 Weeks
Reported as:
Count of units · Number of Lesions
Overall Clinical Success in Number and Size of Lesions as Measured by Photographic or Other Imaging Modality Depending on the Organ System Affected or Change in Affected Organ Functionality at 12 Weeks
Number of LesionsPlasminogen (Human) Intravenous
Total Visible/Non-Visible lesions resolved26
Total Visible/Non-Visible lesions improved14
Total Visible/Non-visible unchanged2
Not applicable/Not assessed5
SecondaryClinical Global Impression-Global Improvement (CGI-I) Scores at Week 12

CGI-I scores are measured at 12 and 48 weeks after study drug treatment. The CGI-I Scale is a single, clinician completed scale designed to capture the clinician's impression of the participant's disease improvement over time. For this scale, clinicians were asked to consider their experience in this population and rate the change relative to the participant's state at Baseline using a 7-point scale (1 = very much improved, 7 = very much worse).

Time frame:
12 weeks
Reported as:
Count of participants · Participants
Clinical Global Impression-Global Improvement (CGI-I) Scores at Week 12
ParticipantsPlasminogen (Human) Intravenous
CGI score 0 = Not assessed: Week 120
CGI score 1 = Very much improved: Week 1211
CGI score 2 = Much improved : Week 124
CGI score 3 = Minimally improved : Week 120
CGI score 4= No change : Week 120
CGI score 5 = Minimally worse : Week 120
CGI score 6 = Much worse : Week 120
CGI score 7 = Very much worse : Week 120
SecondaryClinical Global Impression-Global Improvement (CGI-I) Scores at Week 48

CGI-I scores are measured at 12 and 48 weeks after study drug treatment. The CGI-I Scale is a single, clinician completed scale designed to capture the clinician's impression of the participant's disease improvement over time. For this scale, clinicians were asked to consider their experience in this population and rate the change relative to the participant's state at Baseline using a 7-point scale (1 = very much improved, 7 = very much worse).

Time frame:
48 Weeks
Reported as:
Count of participants · Participants
Clinical Global Impression-Global Improvement (CGI-I) Scores at Week 48
ParticipantsPlasminogen (Human) Intravenous
CGI Score 0= Not assessed: Week 480
CGI Score 1= Very much improved: Week 4813
CGI Score 2= Much improved: Week 482
CGI Score 3= Minimally improved: Week 480
CGI Score 4= No change: Week 480
CGI Score 5= Minimally worse: Week 480
CGI Score 6= Much worse: Week 480
CGI Score 7= Very much worse: Week 480
SecondaryNumber of Participants With Improved Quality of Life (QOL) Score After 12 Weeks of Study Treatment

Quality of life score (QOL) was measured at baseline and at 12 and 48 weeks after study drug treatment. For the QOL assessment, participants were asked to rate their overall QOL using an 11-point scale (0 = non-functioning, 10 = normal; The QOL scale was adapted from a scale developed by the American Chronic Pain Association.

Time frame:
12 weeks
Reported as:
Count of participants · Participants
Number of Participants With Improved Quality of Life (QOL) Score After 12 Weeks of Study Treatment
ParticipantsPlasminogen (Human) Intravenous
QOL score 0 : Week 120
QOL score = 1 : Week 120
QOL score = 2 : Week 120
QOL score = 3 : Week 120
QOL score = 4 : Week 120
QOL score = 5 : Week 121
QOL score = 6 : Week 120
QOL score = 7 : Week 120
QOL score = 8 : Week 120
QOL score = 9 : Week 121
QOL score = 10 : Week 1213
SecondaryNumber of Participants With Improved Quality of Life (QOL) Score After 48 Weeks of Study Treatment

Quality of life score (QOL) was measured at baseline and at 12 and 48 weeks after study drug treatment. For the QOL assessment, participants were asked to rate their overall QOL using an 11-point scale (0 = non-functioning, 10 = normal; The QOL scale was adapted from a scale developed by the American Chronic Pain Association.

Time frame:
48 weeks
Reported as:
Count of participants · Participants
Number of Participants With Improved Quality of Life (QOL) Score After 48 Weeks of Study Treatment
ParticipantsPlasminogen (Human) Intravenous
QOL Score 0: Week 480
QOL Score 1: Week 480
QOL Score 2: Week 480
QOL Score 3: Week 480
QOL Score 4: Week 480
QOL Score 5: Week 481
QOL Score 6: Week 480
QOL Score 7: Week 480
QOL Score 8: Week 480
QOL Score 9: Week 481
QOL Score 10: Week 4813
SecondaryPlasminogen Activity Trough Levels Between Week 2 and Week 120

Plasminogen activity trough levels were measured at Weeks 2, 4, 6, 8, 10, 12, 24, 36, 48, 60, 72, 84, 96, 108, and 120.

Time frame:
Week 2 to Week 120
Reported as:
Mean · percentage of activity
Plasminogen Activity Trough Levels Between Week 2 and Week 120
percentage of activityPlasminogen (Human) Intravenous
Week 245.1 ± 15.05
Week 448.9 ± 14.56
Week 652.4 ± 11.45
Week 848.3 ± 17.43
Week 1050.2 ± 12.39
Week 1251.0 ± 12.01
Week 2445.0 ± 12.88
Week 3645.5 ± 13.18
Week 4841.7 ± 16.99
Week 6049.0 ± 8.88
Week 7246.7 ± 10.97
Week 8451.7 ± 20.76
Week 9650.1 ± 20.08
Week 10845.0 ± 25.19
Week 12036.5 ± 12.02
SecondaryPlasminogen Antigen Trough Levels Between Week 2 and Week 120

Plasminogen antigen trough levels were measured at Weeks 2, 4, 6, 8, 10, 12, 24, 36, 48, 60, 72, 84, 96, 108, and 120.

Time frame:
Week 2 to Week 120
Reported as:
Mean · mg/dL
Plasminogen Antigen Trough Levels Between Week 2 and Week 120
mg/dLPlasminogen (Human) Intravenous
Week 26.550 ± 3.0457
Week 47.800 ± 3.8813
Week 67.268 ± 3.3155
Week 86.607 ± 3.0046
Week 109.460 ± 7.1543
Week 127.340 ± 2.9342
Week 245.913 ± 2.2181
Week 366.667 ± 2.7336
Week 486.973 ± 3.1299
Week 606.415 ± 1.7578
Week 726.083 ± 2.2851
Week 847.183 ± 3.8129
Week 967.656 ± 4.2030
Week 1086.529 ± 4.0852
Week 1206.550 ± 6.2933
SecondaryHalf-life (t1/2) of Plasminogen Activity After First Dose and at Week 12

t1/2 is time required for the plasma concentration of Plasminogen to decrease 50% in the final stage of its elimination

Time frame:
First dose and 12 weeks
Reported as:
Mean · Hours
Half-life (t1/2) of Plasminogen Activity After First Dose and at Week 12
HoursPlasminogen (Human) Intravenous
Mean (SD) t1/2 of plasminogen after the first dose34 ± 11.73
Mean (SD) t1/2 of plasminogen at week 1239.2 ± 6.22
SecondaryAUClast of Plasminogen Activity After the First Dose and at Week 12

AUCLast is the area under the plasma concentration-curve of Plasminogen from time 0 to the last measured concentration.

Time frame:
First dose and 12 weeks
Reported as:
Mean · hr*%
AUClast of Plasminogen Activity After the First Dose and at Week 12
hr*%Plasminogen (Human) Intravenous
Mean (SD) AUClast after first dose of plasminogen3063.6 ± 778.67
Mean (SD) AUClast at Week 124656.0 ± 1012.66
SecondaryCmax of Plasminogen Activity After First Dose and at Week 12

Cmax is the maximum plasma concentration of Plasminogen

Time frame:
First dose and 12 weeks
Reported as:
Mean · % plasminogen activity
Cmax of Plasminogen Activity After First Dose and at Week 12
% plasminogen activityPlasminogen (Human) Intravenous
Mean (SD) Cmax of plasminogen after first dose95 ± 23.5
Mean (SD) Cmax of plasminogen at Week 12125 ± 23.3
SecondaryCl of Plasminogen Activity After First Dose and at Week 12

Cl is the volume of plasma cleared of Plasminogen per unit time

Time frame:
First dose and 12 weeks
Reported as:
Mean · mL/hr/kg
Cl of Plasminogen Activity After First Dose and at Week 12
mL/hr/kgPlasminogen (Human) Intravenous
Mean (SD) Cl of plasminogen after first dose1.44 ± 0.460
Mean (SD) Cl of plasminogen at Week 120.92 ± 0.257
SecondaryAUCinf of Plasminogen Activity After First Dose and at Week 12

AUCinf is the area under the plasma concentration-curve of Plasminogen from time 0 extrapolated to infinity

Time frame:
First dose and 12 weeks
Reported as:
Mean · hr*%
AUCinf of Plasminogen Activity After First Dose and at Week 12
hr*%Plasminogen (Human) Intravenous
Mean (SD) AUCinf of plasminogen after first dose3605.8 ± 1023.88
Mean (SD) AUCinf of plasminogen at Week 125731.8 ± 1431.70
SecondaryMRTlast for Plasminogen Activity After First Dose and at Week 12

MRTLast is the mean residence time of Plasminogen from time 0 to the last measured concentration

Time frame:
First dose and 12 weeks
Reported as:
Mean · hours
MRTlast for Plasminogen Activity After First Dose and at Week 12
hoursPlasminogen (Human) Intravenous
Mean (SD) MRTlast of plasminogen after first dose30.6 ± 3.22
Mean (SD) MRTlast of plasminogen at Week 1233.5 ± 1.60
SecondaryVss for Plasminogen Activity After First Dose and at Week 12

Vss is the apparent volume of distribution at steady state of Plasminogen

Time frame:
First dose and 12 weeks
Reported as:
Mean · mL/kg
Vss for Plasminogen Activity After First Dose and at Week 12
mL/kgPlasminogen (Human) Intravenous
Mean (SD) Vss of plasminogen after first dose63.3 ± 11.44
Mean (SD) Vss of plasminogen at Week 1249.3 ± 10.36

Adverse events

Collected over Safety was assessed during the treatment period (up to 124 weeks) and a 30-day post-treatment period.. Non-serious events are listed at a 0% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
6.6 mg/kg Plasminogen (Human) Intravenous0/15 (0%)3/15 (20%)15/15 (100%)
Most frequent serious events
Most frequent serious events
Event6.6 mg/kg Plasminogen (Human) Intravenous
IleusGastrointestinal disorders1/15
PneumoniaInfections and infestations1/15
Ear operationSurgical and medical procedures1/15
OssiculoplastySurgical and medical procedures1/15
Most frequent other events
Showing 10 of 167
Most frequent other events
Event6.6 mg/kg Plasminogen (Human) Intravenous
NasopharyngitisInfections and infestations10/15
HeadacheNervous system disorders8/15
Oropharyngeal painRespiratory, thoracic and mediastinal disorders8/15
DiarrhoeaGastrointestinal disorders7/15
CoughRespiratory, thoracic and mediastinal disorders7/15
Abdominal pain upperGastrointestinal disorders6/15
NauseaGastrointestinal disorders6/15
PyrexiaGeneral disorders6/15
RhinorrhoeaRespiratory, thoracic and mediastinal disorders6/15
Abdominal painGastrointestinal disorders5/15

Baseline characteristics

Age, Continuous
Age, Continuous(years)6.6 mg/kg Plasminogen (Human) Intravenous
Mean23.0 ± 13.05
Age, Customized
Age, Customized(Participants)6.6 mg/kg Plasminogen (Human) Intravenous
2-11 years4
12-17 years2
> 17 years9
Sex: Female, Male
Sex: Female, Male(Participants)6.6 mg/kg Plasminogen (Human) Intravenous
Female11
Male4
Race (NIH/OMB)
Race (NIH/OMB)(Participants)6.6 mg/kg Plasminogen (Human) Intravenous
American Indian or Alaska Native0
Asian0
Native Hawaiian or Other Pacific Islander0
Black or African American0
White15
More than one race0
Unknown or Not Reported0
Race/Ethnicity, Customized
Race/Ethnicity, Customized(Participants)6.6 mg/kg Plasminogen (Human) Intravenous
Hispanic/Latino1
Non-Hispanic/Latino14
Region of Enrollment
Region of Enrollment(Participants)6.6 mg/kg Plasminogen (Human) Intravenous
United States12
Norway3
Weight
Weight(Kg)6.6 mg/kg Plasminogen (Human) Intravenous
Mean60.37 ± 26.803
Visible and Non-Visible Lesions by Participant
Visible and Non-Visible Lesions by Participant(Participants)6.6 mg/kg Plasminogen (Human) Intravenous
None4
>= 1 Visible or non-visible lesion11

6 further baseline measures are reported on the registry.

08

Study locations

2 sites
  • Indiana Hemophilia and Thrombosis Center
    Indianapolis, Indiana 46260, United States
  • Oslo University Hospital HF
    Oslo, Sognsvannvejen 20 0372, Norway
09

References and documents

Publications

  • Shapiro AD, Nakar C, Parker JM, Albert GR, Moran JE, Thibaudeau K, Thukral N, Hardesty BM, Laurin P, Sandset PM. Plasminogen replacement therapy for the treatment of children and adults with congenital plasminogen deficiency. Blood. 2018 Mar 22;131(12):1301-1310. doi: 10.1182/blood-2017-09-806729. Epub 2018 Jan 10. PubMed 29321155 ↗

Study documents

PDFs hosted by the registry, ClinicalTrials.gov.

Individual participant data

Plan to share: No

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Aug 2, 2021, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
11

Registry details

Key details

Study ID
NCT02690714
Lead sponsor
Prometic Biotherapeutics, Inc.
Responsible party
Sponsor
First posted
Feb 24, 2016
Start date
May 4, 2016
Primary completion
Dec 17, 2017
Completion
Oct 8, 2018
Results posted
Apr 19, 2021
Last update
Aug 2, 2021

Study contacts

Amy Shapiro, MD
principal investigator · Indiana Hemophilia & Thrombosis Center

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Jul 2021. You cannot join it, but the record below documents what was studied.

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Discussion

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Studies of the drug tested here: Plasminogen

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