This study employs a modified continual reassessment method (mCRM) design to estimate the maximum tolerated dose (MTD) of PF-05230907, defined as a target toxicity rate of 15% based on treatment emergent thromboembolic and/or ischemic events (TIEs). The mCRM design utilizes Bayesian methodology to continuously learn the dose-toxicity relationship, which is characterized by a parametric model. Subjects with a diagnosis of ICH (determined by computed tomography) will be enrolled in cohorts of 3. The total length of time planned for study participation is approximately 3 months; 6.0 hours for screening, a single dose administration with a 4-day minimum hospital confinement period and follow-up visits through Day 91. Severity of adverse events (AEs) and serious adverse events (SAEs) will be graded according to the National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) version 4.03. All subjects who receive PF-05230907 are evaluable for TIEs. The determination of MTD using mCRM modeling will be based on TIEs which occur through 7 days post-dose (Day 8).
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
21
PF-05230907 IV bolus injection
Barnes Jewish Hospital
St Louis, Missouri, United States
Washington University,
St Louis, Missouri, United States
James Cancer Hospital and Solove Research Institute
Columbus, Ohio, United States
The Ohio State University Wexner Medical Center
Columbus, Ohio, United States
Martha Morehouse Medical Plaza
Columbus, Ohio, United States
The Ottawa Hospital
Ottawa, Ontario, Canada
Montreal Neurological Institute and Hospital
Montreal, Quebec, Canada
Hospital Universitari Germans Trias i Pujol
Badalona, Barcelona, Spain
Hospital Clínico Universitario de Santiago de Compostela, Area Neurovascular-Neurologia
Santiago de Compostela, LA Coruna, Spain
Hospital Vall d'Hebron, Unidad de Ictus
Barcelona, Spain
...and 3 more locations
Number of Participants With Treatment-Emergent Thromboembolic and/or Ischemic Events (TIEs)
Thromboembolic and/or ischemic events (TIEs) were defined as any of the following events: disseminated intravascular coagulation (Grade \[Gr\]\>=3); acute coronary syndrome (Gr \>=3); cardiac arrest (Gr \>=4); myocardial infarction (Gr \>=3); Cardiac troponin I increased (Gr 3); ischemia cerebrovascular (Gr \>=1 and associated with lesion\[s\]); portal vein thrombosis (Gr \>=2); ischemic stroke (Gr \>=1 and associated with lesion\[s\]); transient ischemic attacks (Gr 2); purpura (Gr \>=2); superior vena cava syndrome (Gr \>=1); thromboembolic event (Gr \>=2); visceral arterial ischemia (Gr \>=2); peripheral arterial ischemia (Gr \>=3). TIEs were graded based on Common Terminology Criteria for Adverse Events (CTCAE) version 4.03. For the respective event to count as a treatment-emergent TIE, onset or worsening of the event must have occurred following treatment with PF-05230907 and during the interval between Day 1 dosing through Day 8.
Time frame: Day 1 through day of discharge (Day 8)
Number of Participants With Treatment-Emergent Serious Adverse Events (SAEs)
A serious adverse event (SAE) was any untoward medical occurrence at any dose that: resulted in death; or was life threatening (immediate risk of death); or required inpatient hospitalization or prolongation of existing hospitalization; or resulted in persistent or significant disability/incapacity (substantial disruption of the ability to conduct normal life functions); or resulted in congenital anomaly/birth defect. Any such events occurring following the start of treatment or increasing in severity were counted as treatment-emergent.
Time frame: Day 1 through follow-up visit (Day 43)
Number of Participants With Treatment-Emergent Adverse Events (AEs)
An adverse event (AE) was any untoward medical occurrence in a participant who received study treatment without regard to possibility of causal relationship. For the respective event to count as a treatment-emergent AE, onset or worsening of the event must have occurred following treatment with PF-05230907 and during the interval between Day 1 dosing through Day 8.
Time frame: Day 1 through day of discharge (Day 8)
Number of Participants With Treatment-Emergent Laboratory Abnormalities
Laboratory safety parameters included hematology, blood chemistry, prothrombin time/international normalized ratio (PT/INR), fibrinogen, antithrombin III (ATIII), Protein S level, Protein C activity, cardiac troponin I, D-dimer, and urinalysis. The number of participants with laboratory test abnormalities meeting specified criteria without regard to baseline abnormality was assessed. Any abnormalities occurring after the administration of treatment and increasing in severity from baseline value were counted as treatment-emergent.
Time frame: Day 1 through Day 8 (or discharge) for D-dimer laboratory test and urinalysis; Day 1 through Day 4 for all other laboratory tests
Number of Participants With Changes From Baseline in Physical Examination
Comprehensive and targeted physical examinations included general appearance, HEENT (head, eyes, ears, nose and throat), skin, heart (auscultation), lungs (auscultation), abdomen (palpitation and auscultation), and extremities with attention to swelling, general or localized tenderness, entire leg or calf swelling, edema, and collateral superficial veins. The results of the comprehensive and targeted physical examinations were combined to evaluate the changes from baseline through Day 8 (or discharge) for each site parameter according to the categories: positive change (abnormal to normal); no change (normal to normal or abnormal to abnormal); negative change (normal to abnormal). Parameters with at least 1 participant meeting the positive/negative change from baseline criteria are presented here.
Time frame: Baseline (pre-dose), Day 2, Day 3, Day 4, Day 8/discharge
Change From Baseline for Body Temperature
Body temperature was measured by oral, tympanic, axillary or temporal method.
Time frame: Baseline (pre-dose), Day 1 (5 and 45 minutes [min] post-dose), Day 2, Day 3, Day 4, Day 8/discharge
Change From Baseline for Supine Respiratory Rate
Respiratory rate was measured after 5 minutes rest in supine position by observing and counting the respirations of the participant for 30 seconds and multiplied by 2. The use of an automated device for measuring respiratory rate was acceptable.
Time frame: Baseline (pre-dose), Day 1 (5 and 45 minutes [min] post-dose), Day 2, Day 3, Day 4, Day 8/discharge
Change From Baseline for Supine Systolic and Diastolic Blood Pressure
Supine blood pressure (BP, systolic and diastolic) was measured with the participant's arm supported at the level of the heart and recorded to the nearest milliliters of mercury (mmHg) after 5 minutes of rest whenever possible and as permitted by the participant's medical condition.
Time frame: Baseline (pre-dose), Day 1 (5 and 45 minutes [min] post-dose), Day 2, Day 3, Day 4, Day 8/discharge
Change From Baseline for Supine Pulse Rate
The use of an automated device for measuring pulse rate was acceptable, although, when done manually, pulse rate was measured in the brachial/radial artery for at least 30 seconds.
Time frame: Baseline (pre-dose), Day 1 (5 and 45 minutes [min] post-dose), Day 2, Day 3, Day 4, Day 8/discharge
Number of Participants With Electrocardiogram (ECG) Qualitative Results
The electrocardiogram (ECG) results over time were compared to baseline and assessed by the investigator as "less abnormal", "no significant change", or "more abnormal".
Time frame: Baseline (pre-dose), Day 2, Day 4, Day 8/discharge
Maximum Changes From Baseline for Activated Partial Thromboplastin Time (aPTT)
Maximum changes from baseline were calculated for activated partial thromboplastin time (aPTT) after dosing with PF-05230907 through Day 2.
Time frame: Baseline (pre-dose), Day 2
Maximum Changes From Baseline for Prothrombin Fragment 1+2 (PF1+2)
Maximum changes from baseline were calculated for prothrombin fragment 1+2 (PF1+2) after dosing with PF-05230907 through Day 2.
Time frame: Baseline (pre-dose), Day 2
Number of Participants With Anti-Drug Antibody (ADA) Production
Participants with anti-drug antibody (ADA) production were those with at least 1 positive result from Day 1 through follow-up visit (Day 43 and/or Day 91). ADA positive: titer value \>=1.88.
Time frame: Day 1 up to follow-up visit (Day 43 and/or Day 91)
Number of Participants With Neutralizing Antibody (NAb) Production
ADA positive samples were planned to be further characterized for neutralizing antibody (NAb). Participants with NAb production were those with at least 1 positive result from Day 1 through follow-up visit (Day 43 and/or Day 91). As all ADA samples were negative (titer value \<1.88), NAb analysis was not conducted.
Time frame: Day 1 up to follow-up visit (Day 43 and/or Day 91)
Number of Participants With Depletion of Coagulation Factor X
Depletion of coagulation factor X was defined as \>50% reduction relative to baseline (pre-dose).
Time frame: Baseline (pre-dose), Day 43, Day 91
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.