The purpose of this study is to evaluate safety, tolerability, pharmacokinetics (explores what the body does to the drug) and pharmacodynamics (the study of the action or effects a drug has on the body) of JNJ-17299425 in participants with traumatic brain injury (acute and chronic injuries to the brain, including the cerebral hemispheres, cerebellum, and brain stem).
This is an open-label (all people know the identity of the intervention), multi-center (conducted in more than one center), and exploratory study of single and repeat, escalating, intravenous (injection of a substance into a vein) doses of JNJ-17299425 in participants with traumatic brain injury. The study consists of 2 parts (Part 1 and Part 2), and each part will have 2 stages (Stage 1 and Stage 2). In Stage 1 of each part only standard care will be given, through sedation, analgesia and ventilation. If Intra cranial pressure (ICP) rises to greater than 20 millimeter of mercury (mmHG) after ventricular drainage, participants will enter Stage 2 of each part and will receive JNJ-17299425 (single dose in Part 1 and repeated dose in Part 2). During Part 1, safety and efficacy of JNJ-17299425 will be evaluated and during Part 2, safety, tolerability, pharmacokinetics and pharmacodynamics of repeated doses will be evaluated. Efficacy will primarily be evaluated by reduction in ICP. Blood samples will be collected for pharmacokinetic evaluation at pre and post administration of study treatment. Participants' safety will be monitored throughout the study.
Study Type
INTERVENTIONAL
Allocation
NA
Purpose
TREATMENT
Masking
NONE
Enrollment
7
JNJ-17299425 will be administered at a starting dose of 1 milligram (10 milliliter of a 0.1 mg/ml solution) as intravenous bolus injection over 2 minutes in central vein.
Unnamed facility
Aalst, Belgium
Unnamed facility
Brussels, Belgium
Unnamed facility
Edegem, Belgium
Unnamed facility
Genk, Belgium
Percentage Reduction in Intracranial Pressure (ICP)
The ICP is defined as the pressure within the cranial cavity. It is influenced by brain mass, the circulatory system, cerebrospinal fluid dynamics, and skull rigidity. Percentage reduction in ICP and reduction in ICP below 20 millimeter of mercury (mmHG) and a reduction of at least 15 percent ICP will be evaluated. Percentage reduction in ICP means ICP value at Baseline minus ICP value post administration of JNJ-17299425, divided by 100.
Time frame: 30 minutes post administration of JNJ-17299425
Absolute Intracranial Pressure (ICP) Reduction
Absolute ICP reduction is defined as difference between pre dose ICP and lowest ICP value achieved where ICP is pressure within cranial cavity.
Time frame: 30 minutes post administration of JNJ-17299425
Duration To Achieve ICP Reduction
Duration to achieve ICP reduction will assess the time at which ICP value is less than 20mmHg, and the time to achieve 50 percent and below 50 percent of absolute ICP reduction, and time at which lowest ICP value is achieved. Percentage reduction in ICP means ICP value at Baseline minus ICP value post administration of JNJ-17299425, divided by 100 and absolute ICP reduction is defined as difference between pre dose ICP and lowest ICP value achieved where ICP is pressure within cranial cavity.
Time frame: 30 minutes post administration of JNJ-17299425
JNJ-17299425 Plasma Concentration
Plasma concentration of JNJ-17299425 will be determined by collecting venous blood samples at the defined time points.
Time frame: Pre dose and 2, 5, 10, 30 minutes and 1, 2, 3, 4, 6, 9, 12, 24, 36, 48 and 72 hours post administration of JNJ-17299425
Area Under the Plasma Concentration-Time Curve From Time 0 to 24 Hours Post Dose (AUC [0-24])
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Unnamed facility
Ghent, Belgium
Unnamed facility
Kortrijk, Belgium
Unnamed facility
Leuven, Belgium
Unnamed facility
Liège, Belgium
Unnamed facility
Roeselare, Belgium
Unnamed facility
Turnhout, Belgium
...and 1 more locations
The AUC (0-24) is the area under the plasma concentration-time curve from 0 to 24 hours post dosing.
Time frame: Pre dose and 2, 5, 10, 30 minutes and 1, 2, 3, 4, 6, 9, 12, 24, 36, 48 and 72 hours post administration of first dose of JNJ-17299425, and at pre dose and 0.5, 1, 2, 3 and 12 hours post administration of second dose of JNJ-17299425
Area Under the Plasma Concentration-Time Curve (AUC) From Time Zero to Last Quantifiable Concentration (AUC[0-t]) and AUC From Time 0 to Infinite time (AUC ([0-infinity])
The AUC (0-infinity) calculated by trapezoidal summation (time t is the time of the last quantifiable concentration C\[last\]) and AUC (infinity) is the area under the plasma concentration-time curve from time 0 to infinite time, calculated as the sum of AUC(last) and C(last)/l(z), in which C(last) is the last observed quantifiable concentration.
Time frame: Pre dose and 2, 5, 10, 30 minutes and 1, 2, 3, 4, 6, 9, 12, 24, 36, 48 and 72 hours post administration of first dose of JNJ-17299425, and at pre dose and 0.5, 1, 2, 3 and 12 hours post administration of second dose of JNJ-17299425
Clearance
Clearance is a quantitative measure of the rate at which a drug substance is removed from the body.
Time frame: Pre dose and 2, 5, 10, 30 minutes and 1, 2, 3, 4, 6, 9, 12, 24, 36, 48 and 72 hours post administration of first dose of JNJ-17299425, and at pre dose and 0.5, 1, 2, 3 and 12 hours post administration of second dose of JNJ-17299425
Volume of Distribution (V[d])
Volume of distribution is defined as the theoretical volume in which the total amount of drug would need to be uniformly distributed to produce the desired blood concentration of a drug.
Time frame: Pre dose and 2, 5, 10, 30 minutes and 1, 2, 3, 4, 6, 9, 12, 24, 36, 48 and 72 hours post administration of first dose of JNJ-17299425, and at pre dose and 0.5, 1, 2, 3 and 12 hours post administration of second dose of JNJ-17299425
Elimination Rate Constant (Lambda[z])
Lambda(z) determined by linear regression of the terminal points of the log-linear plasma concentration-time curve
Time frame: Pre dose and at 2, 5, 10, 30 minutes and at 1, 2, 3, 4, 6, 9, 12, 24, 36, 48 and 72 hours after first dose and at pre dose and post administration of second dose, at 0.5, 1, 2, 3 and 12 hours after second dose of JNJ-17299425
Terminal Half-Life (t[1/2])
Terminal half-life (t\[(1/2\]) is defined as 0.693/Lambda(z).
Time frame: Pre dose and 2, 5, 10, 30 minutes and 1, 2, 3, 4, 6, 9, 12, 24, 36, 48 and 72 hours post administration of first dose of JNJ-17299425, and at pre dose and 0.5, 1, 2, 3 and 12 hours post administration of second dose of JNJ-17299425