Safety and Tolerability of PNT001 in Patients With Acute Traumatic Brain Injury (TBI)

• ClinicalTrials.gov Identifier: NCT04677829
• Recruitment Status: Terminated
• First Posted: December 21, 2020
• Last Update Posted: June 29, 2022
• Sponsor: Pinteon Therapeutics, Inc
• Collaborator: United States Department of Defense
• Information provided by (Responsible Party): Pinteon Therapeutics, Inc

Study Description

Brief Summary:

This is a Phase 1, multi-center, randomized, double-blind, placebo-controlled, multiple-ascending- dose trial to evaluate the safety, tolerability, immunogenicity, and pharmacokinetics of intravenous PNT001 in hospitalized patients with traumatic brain injury.

Condition or disease	Intervention/treatment	Phase
Traumatic Brain Injury	Biological: PNT001; Biological: %5 dextrose for infusion	Phase 1

Detailed Description:

The Phase 1 study is a double-blind, multiple ascending dose trial evaluating a total of 64 patients across two dose cohort groups. Each cohort will include 32 patients (24 active; 8 placebo) who will be randomized to receive three doses of either PNT001 or placebo. Doses studied will be 1000mg and 4000mg.

Patients admitted to the trauma center who meet entrance criteria will receive their first dose of study drug within 24 hours of documented TBI. They will remain in the facility for at least 24 hours after initial dose. Baseline biomarker collection and cognitive assessments will be completed. Study medication will be administered as an IV infusion over 30 minutes (for 1000mg cohort) or 60 minutes (for 4000mg cohort) followed by collection of safety, tolerability, pharmacokinetic, biomarker, imaging, and cognitive data over 12 weeks. Subsequent dosing visits will be at Days 28 and 56. All visits after initial discharge will be on an outpatient basis.

Study Design

• Study Type: Interventional (Clinical Trial)
• Actual Enrollment: 1 participants
• Allocation: Randomized
• Intervention Model: Sequential Assignment
• Intervention Model Description: Escalating dose level cohorts; each cohort with an active and a placebo arm
• Masking: Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
• Masking Description: Study drug will be administered and assessed in double-blinded fashion.
• Primary Purpose: Treatment
• Official Title: Phase 1, Randomized, Double-blind, Placebo-controlled, Multiple-ascending-dose Trial to Evaluate the Safety, Tolerability, Immunogenicity, and Pharmacokinetics of Intravenous PNT001 in Hospitalized Patients With Traumatic Brain Injury (TBI)
• Actual Study Start Date: March 29, 2021
• Actual Primary Completion Date: April 12, 2021
• Actual Study Completion Date: April 12, 2021

Arms and Interventions

Arm	Intervention/treatment
Experimental: PNT001 1000mg; PNT001 diluted in 5% dextrose for infusion	Biological: PNT001; 30 minute infusion for PNT001 1000mg; 60 minute infusion for PNT001 4000mg
Experimental: PNT001 4000mg; PNT001 diluted in 5% dextrose for infusion	Biological: %5 dextrose for infusion; 30 min placebo infusion for 1000mg; 60 minute placebo infusion for 4000mg
Placebo Comparator: Placebo; 5% dextrose for infusion	Biological: PNT001; 30 minute infusion for PNT001 1000mg; 60 minute infusion for PNT001 4000mg; Biological: %5 dextrose for infusion; 30 min placebo infusion for 1000mg; 60 minute placebo infusion for 4000mg

Outcome Measures

Primary Outcome Measures :

1. Incidence of Treatment Emergent Adverse Events [ Time Frame: 84 day study duration ]
   assess adverse events
2. Incidence of Treatment Emergent Clinical Laboratory Test Abnormalities [ Time Frame: 84 day study duration ]
   measure clinical laboratory values
3. Incidence of Treatment Emergent Abnormalities in Physical Examination Findings [ Time Frame: 84 day study duration ]
   perform physical examination
4. Incidence of Treatment Emergent Abnormalities in Neurological Examination Findings [ Time Frame: 84 day study duration ]
   perform neurological examination
5. Incidence of Treatment Emergent Abnormalities in Vital Signs [ Time Frame: 84 day study duration ]
   assess blood pressure, pulse, temperature, respiratory rate
6. Incidence of Treatment Emergent Abnormalities in 12-lead Electrocardiogram Assessment [ Time Frame: 84 day duration of study ]
   measure ECG parameters

Secondary Outcome Measures :

1. Pharmacokinetic Properties of PNT001 in Serum [ Time Frame: 84 day duration of study ]
   measure concentration of PNT001 in serum

Other Outcome Measures:

1. Anti-Drug Antibodies (ADA) [ Time Frame: 84 day duration of study ]
   number of participants with presence of anti-drug antibodies (ADA) in serum
2. Biomarker Measurements in Plasma [ Time Frame: 84 day duration of study ]
   measure concentrations of total (mid-domain) tau, NfL, GFAP, UCH-L1, pT181 tau, pT231 tau total tau in plasma
3. Effects of PNT001 on imaging parameters [ Time Frame: Day 3 through the remainder of the 84 day study ]
   measure diffusion tensor imaging parameters
4. Effects of PNT001 on cognitive measures [ Time Frame: 84 day duration of study ]
   scores on the Trails A and B assessments
5. Effects of PNT001 on health related Quality of Life [ Time Frame: 84 day duration of the study ]
   measure change in ratings across 8 categories on the NeuroQOL assessment
6. Effects of PNT001 on a Global Outcome Scale [ Time Frame: 84 day duration of the study ]
   measure disability outcome based on ratings in 8 areas of the Global Outcome Scale Extended (GOSE)
7. hsCRP Measurement in Serum [ Time Frame: 84 day duration of the study ]
   measure concentrations of hsCRP in serum

Eligibility Criteria

• Ages Eligible for Study: 18 Years to 65 Years (Adult, Older Adult)
• Sexes Eligible for Study: All
• Accepts Healthy Volunteers: No

Criteria

Inclusion Criteria:

1. Hospitalization due to documented evidence of TBI with Glasgow Coma Scale (GCS) Score 9-12 or GCS score of 13-15 with radiographic evidence of trauma.
2. Duration from documented time of TBI event to time of start of initial dose of study drug will not exceed 24 hours.
3. Signed informed consent by patient, or where applicable, patient's legally authorized representative.
4. Male and females, 18- 65 years of age at time of screening (State's legal age of majority is minimum age if higher than 18).
5. Female patients must meet protocol defined criteria for 1) non-childbearing potential, 2) post menopausal or 3) must have a negative pregnancy test and agree to contraception as outlined in the protocol.
6. Male must agree to use acceptable contraception and refrain from sperm donation during the entire study and for 200 days after dosing has been completed.
7. Has not participated in a clinical drug trial within 3 months of study start.
8. Body Mass Index (BMI) of 18.5-35.0 kg/m2 and for the 4000mg dose group only, weight greater than or equal to 44.8 kg.
9. Vision, hearing, speech, motor function, and comprehension sufficient for compliance with all testing procedures and assessments.

Exclusion Criteria:

1. TBI that does not require hospitalization.
2. TBI outside 24-hour window.
3. GCS < 9 within 2 hours of dosing.
4. History of TBI in past 12 months that resulted in patient seeking medical attention.
5. Evidence of penetrating head trauma or depressed skull fracture.
6. Clinical or radiographic evidence of mass effect, midline shift, or intracranial hypertension, requiring craniotomy/craniectomy.
7. Evidence of symptomatic cervical, thoracic, lumbar spine injury e.g. paresis, radiculopathy, that can be localized to the injury.
8. Systemic traumatic injury that would preclude participation in study or is expected to result in long-term disability.
9. Any other acute or chronic medical illness that in the judgement of the study physician results in functional impairment or impairs neuropsychiatric function.
10. Any acute intoxication that in the judgement of the study physician results in significant functional impairment or impairs neuropsychiatric function.
11. Any history of cancer within 5 years of enrollment with the exception of resected skin basal cell carcinoma.
12. Any major surgery requiring general anesthesia within 4 weeks of study drug administration.
13. Donation of blood or serum ≥500 mL to a blood bank or in a clinical study (except screening visit) within 3 months of study drug administration.
14. Known recent (within 6 months of study drug administration) drug or alcohol abuse as defined in DSM V, Diagnostic Criteria for Drug and Alcohol Abuse.
15. Evidence of any clinically significant neurological or psychiatric disorder that could interfere with study assessments as determined by investigator and sponsor.
16. Patient has history or currently has schizophrenia, schizoaffective disorder or bipolar disorder, untreated major depression (DSM-V or ICD-10 criteria).
17. Significant illness within the prior 30 days.
18. Abnormalities in creatinine, hepatic transaminases, or QT that would preclude entry into the study.

Contacts and Locations

Locations

United States, Pennsylvania

Penn Presbyterian Medical Center

Philadelphia, Pennsylvania, United States, 19104

Sponsors and Collaborators

Pinteon Therapeutics, Inc

United States Department of Defense

Investigators

• Study Director: Larry Altstiel, MD, PhD; Pinteon Therapeutics

More Information

• Responsible Party: Pinteon Therapeutics, Inc
• ClinicalTrials.gov Identifier: NCT04677829
• Other Study ID Numbers: PNT001-002
• First Posted: December 21, 2020
• Last Update Posted: June 29, 2022
• Last Verified: June 2022

Individual Participant Data (IPD) Sharing Statement:

• Plan to Share IPD: No

• Studies a U.S. FDA-regulated Drug Product: Yes
• Studies a U.S. FDA-regulated Device Product: No

Additional relevant MeSH terms:

Brain Injuries; Brain Injuries, Traumatic; Wounds and Injuries; Brain Diseases; Central Nervous System Diseases; Nervous System Diseases; Craniocerebral Trauma; Trauma, Nervous System