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Receptor Occupancy of LB-102 Using Positron Emission Tomography (PET) in Healthy Volunteers

Primary Purpose

Schizophrenia

Status
Completed
Phase
Phase 1
Locations
United States
Study Type
Interventional
Intervention
LB-102
Sponsored by
LB Pharmaceuticals Inc.
About
Eligibility
Locations
Arms
Outcomes
Full info

About this trial

This is an interventional basic science trial for Schizophrenia

Eligibility Criteria

18 Years - 55 Years (Adult)All SexesAccepts Healthy Volunteers

Inclusion Criteria:

Body Mass Index (BMI) ≥ 18 and ≤ 30 kg/m2 at screening visit. Competent to provide informed consent.

Subjects must be in good general health as determined by medical history and physical examination with no clinically significant medical findings and no history of significant medical disease (e.g., cardiovascular, pulmonary, renal, etc.) or acute condition with the past 30 days, as determined by the study investigators.

Have normal clinical laboratory test results and ECG, which are not considered to be clinically significant by the Investigator.

Exclusion Criteria:

  1. Are pregnant or lactating.
  2. Have a history or presence of significant cardiovascular, respiratory, hepatic, renal, gastrointestinal, endocrine, neurological or psychological/psychiatric disorders which, in the opinion of the Investigator, increases the risk of the study drug or may confound the interpretation of study measures.
  3. Clinically significant abnormal findings on physical examination or vital signs as determined by Investigator.
  4. Individuals with pacemakers, aneurysm clips, shrapnel, or other restricted implanted metallic devices will be excluded from study. All subjects complete the standard MRI screening questionnaire prior to MRI.
  5. History or presence of psychiatric or neurological disease or condition, as determined by the Investigator.
  6. History of seizures.
  7. Subject with any history or current evidence of suicidal behavior.
  8. Unwilling to complete any planned study assessments.
  9. Have a history of blood donation in excess of 500 mL of blood within 30 days prior to Screening.
  10. Have received treatment with an investigational drug or device within 30 days prior to Screening.
  11. Have a positive test for Human Immunodeficiency Virus (HIV) antibodies 1 and 2, Hepatitis B Surface Antigen (HBsAg) or Hepatitis C Virus (HCV) antibody.
  12. Any subject who is known to be allergic to the study drug or any components of the study drug.
  13. The subject has a fasting blood glucose ≥ 126 mg/dL or hemoglobin A1c (HbA1c) ≥ 6.5% at Screening.
  14. The subject has a history of QT prolongation or dysrhythmia or a family history of prolonged QT interval or sudden death.
  15. Clinically significant abnormal finding on ECG (electrocardiogram) and/or evidence of any of the following cardiac conduction abnormalities at Screening:

    1. Heart rate < 40 bpm and > 100 bpm (based on the ECG reading)
    2. QTcF interval > 450 msec for males and females
    3. PR interval ≥ 200 msec
    4. Intraventricular conduction delay with QRS duration > 120 msec
    5. Evidence of second- or third-degree atrioventricular block (AVB)
    6. Electrocardiographic evidence of complete left bundle branch block (LBBB), complete right bundle branch block (RBBB), or incomplete LBBB

Sites / Locations

  • Washington University School of Medicine

Arms of the Study

Arm 1

Arm 2

Arm 3

Arm 4

Arm Type

Experimental

Experimental

Experimental

Experimental

Arm Label

LB-102 50 mg, single dose Cohort 1

LB-102 100 mg, single dose Cohort 2

LB-102 75 mg, single dose Cohort 3

LB-102 100 & 50 mg, multiple dose Cohort 4

Arm Description

LB-102 (N-Methyl amisulpride) formulated capsule will be administered orally once daily for one day in 4 subjects.

LB-102 (N-Methyl amisulpride) formulated capsule will be administered orally once daily for one day in 4 subjects.

LB-102 (N-Methyl amisulpride) formulated capsule will be administered orally once daily for one day in 4 subjects.

LB-102 (N-Methyl amisulpride) formulated capsule will be administered orally once daily for four days in 4 subjects: 2 subjects @ 100 mg and 2 subjects @ 50 mg.

Outcomes

Primary Outcome Measures

Brain Receptor Occupancy as Measured by Positron Emission Tomography
PET scan of D2/D3 receptor occupancy using raclopride as a tracer
Brain Receptor Occupancy as Measured by Positron Emission Tomography
PET scan of D2/D3 receptor occupancy using raclopride as a tracer
Brain Receptor Occupancy as Measured by Positron Emission Tomography
PET scan of D2/D3 receptor occupancy using raclopride as a tracer

Secondary Outcome Measures

Safety and Tolerability as Measured by Reported Adverse Events
Measurement of clinical events as determined by medical staff reporting

Full Information

First Posted
October 6, 2020
Last Updated
April 28, 2022
Sponsor
LB Pharmaceuticals Inc.
Collaborators
Washington University School of Medicine
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1. Study Identification

Unique Protocol Identification Number
NCT04588129
Brief Title
Receptor Occupancy of LB-102 Using Positron Emission Tomography (PET) in Healthy Volunteers
Official Title
An Open Label Positron Emission Tomography (PET) Study to Evaluate Dopamine Receptor Occupancy of LB-102 Administered Orally to Healthy Subjects
Study Type
Interventional

2. Study Status

Record Verification Date
April 2022
Overall Recruitment Status
Completed
Study Start Date
January 5, 2021 (Actual)
Primary Completion Date
September 17, 2021 (Actual)
Study Completion Date
November 15, 2021 (Actual)

3. Sponsor/Collaborators

Responsible Party, by Official Title
Sponsor
Name of the Sponsor
LB Pharmaceuticals Inc.
Collaborators
Washington University School of Medicine

4. Oversight

Studies a U.S. FDA-regulated Drug Product
Yes
Studies a U.S. FDA-regulated Device Product
No
Data Monitoring Committee
No

5. Study Description

Brief Summary
This is an open label study in 4 cohort of 4 healthy volunteers each designed to evaluate the dopamine receptor occupancy of LB-102 at various doses and timepoints.
Detailed Description
This is a Phase 1, open label study designed to evaluate the dopamine receptor occupancy in healthy subjects. There will be 4 cohorts consisting of 4 subjects each. Eligible subjects will receive 1 or 2 doses of LB-102 on Day 1: subjects in the final cohort will be dosed for 5 days BID (ie twice/day) on an inpatient basis. This will be an open label study. Blood samples for pharmacokinetic (PK) and safety assessments will be collected at screening, immediately pre-dose, and during/before/after PET scan. Subjects enrolled in the inpatient cohort will be monitored daily. Follow-up after discharge will consist of a phone call the evening of discharge and the next day to check on subjects. This will be an adaptive study and doses in cohorts 2-4 will be determined after PET data from Cohort 1 are obtained.

6. Conditions and Keywords

Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Schizophrenia

7. Study Design

Primary Purpose
Basic Science
Study Phase
Phase 1
Interventional Study Model
Single Group Assignment
Masking
None (Open Label)
Allocation
Randomized
Enrollment
16 (Actual)

8. Arms, Groups, and Interventions

Arm Title
LB-102 50 mg, single dose Cohort 1
Arm Type
Experimental
Arm Description
LB-102 (N-Methyl amisulpride) formulated capsule will be administered orally once daily for one day in 4 subjects.
Arm Title
LB-102 100 mg, single dose Cohort 2
Arm Type
Experimental
Arm Description
LB-102 (N-Methyl amisulpride) formulated capsule will be administered orally once daily for one day in 4 subjects.
Arm Title
LB-102 75 mg, single dose Cohort 3
Arm Type
Experimental
Arm Description
LB-102 (N-Methyl amisulpride) formulated capsule will be administered orally once daily for one day in 4 subjects.
Arm Title
LB-102 100 & 50 mg, multiple dose Cohort 4
Arm Type
Experimental
Arm Description
LB-102 (N-Methyl amisulpride) formulated capsule will be administered orally once daily for four days in 4 subjects: 2 subjects @ 100 mg and 2 subjects @ 50 mg.
Intervention Type
Drug
Intervention Name(s)
LB-102
Intervention Description
(N-Methyl amisulpride)
Primary Outcome Measure Information:
Title
Brain Receptor Occupancy as Measured by Positron Emission Tomography
Description
PET scan of D2/D3 receptor occupancy using raclopride as a tracer
Time Frame
2.5 hours post LB-102 dose
Title
Brain Receptor Occupancy as Measured by Positron Emission Tomography
Description
PET scan of D2/D3 receptor occupancy using raclopride as a tracer
Time Frame
7.5 hours post LB-102 dose
Title
Brain Receptor Occupancy as Measured by Positron Emission Tomography
Description
PET scan of D2/D3 receptor occupancy using raclopride as a tracer
Time Frame
23.5 hours post LB-102 dose
Secondary Outcome Measure Information:
Title
Safety and Tolerability as Measured by Reported Adverse Events
Description
Measurement of clinical events as determined by medical staff reporting
Time Frame
Up to 14 days

10. Eligibility

Sex
All
Minimum Age & Unit of Time
18 Years
Maximum Age & Unit of Time
55 Years
Accepts Healthy Volunteers
Accepts Healthy Volunteers
Eligibility Criteria
Inclusion Criteria: Body Mass Index (BMI) ≥ 18 and ≤ 30 kg/m2 at screening visit. Competent to provide informed consent. Subjects must be in good general health as determined by medical history and physical examination with no clinically significant medical findings and no history of significant medical disease (e.g., cardiovascular, pulmonary, renal, etc.) or acute condition with the past 30 days, as determined by the study investigators. Have normal clinical laboratory test results and ECG, which are not considered to be clinically significant by the Investigator. Exclusion Criteria: Are pregnant or lactating. Have a history or presence of significant cardiovascular, respiratory, hepatic, renal, gastrointestinal, endocrine, neurological or psychological/psychiatric disorders which, in the opinion of the Investigator, increases the risk of the study drug or may confound the interpretation of study measures. Clinically significant abnormal findings on physical examination or vital signs as determined by Investigator. Individuals with pacemakers, aneurysm clips, shrapnel, or other restricted implanted metallic devices will be excluded from study. All subjects complete the standard MRI screening questionnaire prior to MRI. History or presence of psychiatric or neurological disease or condition, as determined by the Investigator. History of seizures. Subject with any history or current evidence of suicidal behavior. Unwilling to complete any planned study assessments. Have a history of blood donation in excess of 500 mL of blood within 30 days prior to Screening. Have received treatment with an investigational drug or device within 30 days prior to Screening. Have a positive test for Human Immunodeficiency Virus (HIV) antibodies 1 and 2, Hepatitis B Surface Antigen (HBsAg) or Hepatitis C Virus (HCV) antibody. Any subject who is known to be allergic to the study drug or any components of the study drug. The subject has a fasting blood glucose ≥ 126 mg/dL or hemoglobin A1c (HbA1c) ≥ 6.5% at Screening. The subject has a history of QT prolongation or dysrhythmia or a family history of prolonged QT interval or sudden death. Clinically significant abnormal finding on ECG (electrocardiogram) and/or evidence of any of the following cardiac conduction abnormalities at Screening: Heart rate < 40 bpm and > 100 bpm (based on the ECG reading) QTcF interval > 450 msec for males and females PR interval ≥ 200 msec Intraventricular conduction delay with QRS duration > 120 msec Evidence of second- or third-degree atrioventricular block (AVB) Electrocardiographic evidence of complete left bundle branch block (LBBB), complete right bundle branch block (RBBB), or incomplete LBBB
Overall Study Officials:
First Name & Middle Initial & Last Name & Degree
Dean Wong, PhD
Organizational Affiliation
Washington University School of Medicine
Official's Role
Principal Investigator
Facility Information:
Facility Name
Washington University School of Medicine
City
Saint Louis
State/Province
Missouri
ZIP/Postal Code
63110
Country
United States

12. IPD Sharing Statement

Plan to Share IPD
No
Links:
URL
http://www.LBPharma.us
Description
Corporate Website

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Receptor Occupancy of LB-102 Using Positron Emission Tomography (PET) in Healthy Volunteers

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