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OpenTrials
Completed

NCT Number: NCT05899829

Evaluation of the Effect of Rifampin and Rabeprazole on the Pharmacokinetics of Camlipixant

This is a phase 1, 2-part, open-label, fixed-sequence study evaluating the effect of rifampin (part 1) and rabeprazole (part 2) on the pharmacokinetics of a single dose of camlipixant (BLU-5937) 50 mg tablet in healthy participants under fasting conditions.

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Key information

Age range

18 year–55 year

Sex eligibility

All sexes

Study type

Interventional

Phase

Phase 1

Primary location

GSK Investigational Site

Québec, Quebec, G1P 0A2, Canada

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Healthy males or non-pregnant, non-lactating healthy females

Exclusion criteria

  • History of clinically significant history of neurological, endocrine, cardiovascular, respiratory, hematological, immunological, psychiatric, gastrointestinal, renal, hepatic, and metabolic disorder, as judged by the investigator.

Treatment and study plan

Camlipixant

Drug

Camlipixant will be administered

rabeprazole

Drug

Rabeprazole will be administered

Rifampin

Drug

Rifampin will be administered.

Primary outcomes

  1. Part 1: Area Under the Plasma Concentration-time Curve From Time Zero to Infinity (AUC[0-Infinity]) of Camlipixant

    Time frame: Pre-dose, 0.16, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 15, 18, 24, 36, and 48 hours post-dose on Day 1 and Day 11

    Blood samples were collected at indicated time points for pharmacokinetic (PK) analysis of Camlipixant. PK analysis was conducted using standard non-compartmental methods.

  2. Part 2: AUC(0-Infinity) of Camlipixant

    Time frame: Pre-dose, 0.16, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 15, 18, 24, 36, and 48 hours post-dose on Day 1 and Day 10

    Blood samples were collected at indicated time points for PK analysis of Camlipixant. PK analysis was conducted using standard non-compartmental methods.

  3. Part 1: Area Under the Plasma Concentration-time Curve From Time Zero Until the Last Observed Concentration (AUC[0-t]) of Camlipixant

    Time frame: Pre-dose, 0.16, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 15, 18, 24, 36, and 48 hours post-dose on Day 1 and Day 11

    Blood samples were collected at indicated time points for PK analysis of Camlipixant. PK analysis was conducted using standard non-compartmental methods.

  4. Part 2: AUC(0-t) of Camlipixant

    Time frame: Pre-dose, 0.16, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 15, 18, 24, 36, and 48 hours post-dose on Day 1 and Day 10

    Blood samples were collected at indicated time points for PK analysis of Camlipixant. PK analysis was conducted using standard non-compartmental methods.

  5. Part 1: Maximum Observed Concentration (Cmax) of Camlipixant

    Time frame: Pre-dose, 0.16, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 15, 18, 24, 36, and 48 hours post-dose on Day 1 and Day 11

    Blood samples were collected at indicated time points for PK analysis of Camlipixant. PK analysis was conducted using standard non-compartmental methods.

  6. Part 2: Cmax of Camlipixant

    Time frame: Pre-dose, 0.16, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 15, 18, 24, 36, and 48 hours post-dose on Day 1 and Day 10

    Blood samples were collected at indicated time points for PK analysis of Camlipixant. PK analysis was conducted using standard non-compartmental methods.

Secondary outcomes

  1. Part 1: Time to Reach Maximum Observed Concentration (Tmax) of Camlipixant

    Time frame: Pre-dose, 0.16, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 15, 18, 24, 36, and 48 hours post-dose on Day 1 and Day 11

    Blood samples were collected at indicated time points for PK analysis of Camlipixant. PK analysis was conducted using standard non-compartmental methods.

  2. Part 2: Tmax of Camlipixant

    Time frame: Pre-dose, 0.16, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 15, 18, 24, 36, and 48 hours post-dose on Day 1 and Day 10

    Blood samples were collected at indicated time points for PK analysis of Camlipixant. PK analysis was conducted using standard non-compartmental methods.

  3. Part 1: Terminal Elimination Half-Life (T1/2) Following Administration of Camlipixant

    Time frame: Pre-dose, 0.16, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 15, 18, 24, 36, and 48 hours post-dose on Day 1 and Day 11

    Blood samples were collected at indicated time points for PK analysis of Camlipixant. PK analysis was conducted using standard non-compartmental methods.

  4. Part 2: T1/2 Following Administration of Camlipixant

    Time frame: Pre-dose, 0.16, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 15, 18, 24, 36, and 48 hours post-dose on Day 1 and Day 10

    Blood samples were collected at indicated time points for PK analysis of Camlipixant. PK analysis was conducted using standard non-compartmental methods.

  5. Part 1: Percentage of AUC0-Infinity Due to Extrapolation From the Time of the Last Observed Concentration to Infinity (% AUC Extrapolation) of Camlipixant

    Time frame: Pre-dose, 0.16, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 15, 18, 24, 36, and 48 hours post-dose on Day 1 and Day 11

    Blood samples were collected at indicated time points for PK analysis of Camlipixant. PK analysis was conducted using standard non-compartmental methods. Percentage of AUC extrapolation was calculated as [1 - (AUC0-t/AUC0-inf)] * 100.

  6. Part 2: % AUC Extrapolation of Camlipixant

    Time frame: Pre-dose, 0.16, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 15, 18, 24, 36, and 48 hours post-dose on Day 1 and Day 10

    Blood samples were collected at indicated time points for PK analysis of Camlipixant. PK analysis was conducted using standard non-compartmental methods. Percentage of AUC extrapolation was calculated as [1 - (AUC0-t/AUC0-inf)] * 100.

  7. Part 1: Terminal Elimination Rate Constant of Camlipixant

    Time frame: Pre-dose, 0.16, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 15, 18, 24, 36, and 48 hours post-dose on Day 1 and Day 11

    Blood samples were collected at indicated time points for PK analysis of Camlipixant. PK analysis was conducted using standard non-compartmental methods.

  8. Part 2: Terminal Elimination Rate Constant of Camlipixant

    Time frame: Pre-dose, 0.16, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 15, 18, 24, 36, and 48 hours post-dose on Day 1 and Day 10

    Blood samples were collected at indicated time points for PK analysis of Camlipixant. PK analysis was conducted using standard non-compartmental methods.

  9. Part 1: Apparent Clearance (CL/F) of Camlipixant

    Time frame: Pre-dose, 0.16, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 15, 18, 24, 36, and 48 hours post-dose on Day 1 and Day 11

    Blood samples were collected at indicated time points for PK analysis of Camlipixant. PK analysis was conducted using standard non-compartmental methods.

  10. Part 2: CL/F of Camlipixant

    Time frame: Pre-dose, 0.16, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 15, 18, 24, 36, and 48 hours post-dose on Day 1 and Day 10

    Blood samples were collected at indicated time points for PK analysis of Camlipixant. PK analysis was conducted using standard non-compartmental methods.

  11. Part 1: Apparent Oral Volume of Distribution (Vz/F) of Camlipixant

    Time frame: Pre-dose, 0.16, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 15, 18, 24, 36, and 48 hours post-dose on Day 1 and Day 11

    Blood samples were collected at indicated time points for PK analysis of Camlipixant. PK analysis was conducted using standard non-compartmental methods.

  12. Part 2: Vz/F of Camlipixant

    Time frame: Pre-dose, 0.16, 0.25, 0.5, 0.75, 1, 1.5, 2, 2.5, 3, 4, 6, 8, 10, 12, 15, 18, 24, 36, and 48 hours post-dose on Day 1 and Day 10

    Blood samples were collected at indicated time points for PK analysis of Camlipixant. PK analysis was conducted using standard non-compartmental methods.

  13. Part 1: Number of Participants With Treatment-emergent Adverse Events (TEAEs), Treatment-emergent Serious Adverse Events (TESAEs) and Treatment-emergent Adverse Events of Medical Interest (TEAEMIs)

    Time frame: Up to Day 22 for Part1 (Day1 post-dose until Day4 pre-dose of rifampin [Camlipixant 50mg];From Day4 dosing until Day11 pre-dose of camlipixant [Rifampin 600mg];From camlipixant dosing on Day11 until end of study [Day 22] [Camlipixant 50mg+Rifampin 600mg]

    An adverse event (AE) is defined as any untoward medical occurrence in a participant who is administered a pharmaceutical product and which does not necessarily have a causal relationship with the treatment. Serious adverse events (SAEs) are defined as any untoward medical occurrence that; at any dose: results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/birth defect, other situations judged by physician, is associated with liver injury and impaired liver function. Adverse events of medical interest (AEMIs) are AEs of scientific interest specific to the drug class. Treatment-emergent events (i.e., TEAEs, TESAEs and TEAEMIs) were defined as events that commence on or after the time of first study drug administration.

  14. Part 2: Number of Participants With TEAEs, TESAEs and TEAEMIs

    Time frame: Upto Day21 for Part2(Day1 postdose until Day4 predose of rabeprazole [Camlipixant 50mg];From Day4 dosing until Day10 predose of camlipixant [Rabeprazole 20mg];From camlipixant dosing on Day10 until end of study[Day21] [Camlipixant 50mg+Rabeprazole 20mg]

    An adverse event (AE) is defined as any untoward medical occurrence in a participant who is administered a pharmaceutical product and which does not necessarily have a causal relationship with the treatment. Serious adverse events (SAEs) are defined as any untoward medical occurrence that; at any dose: results in death, is life-threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/birth defect, other situations judged by physician, is associated with liver injury and impaired liver function. Adverse events of medical interest (AEMIs) are AEs of scientific interest specific to the drug class. Treatment-emergent events (i.e., TEAEs, TESAEs and TEAEMIs) were defined as events that commence on or after the time of first study drug administration.

  15. Part 1: Number of Participants With Abnormal Clinically Significant Changes in 12-Lead Electrocardiogram (ECG) Findings

    Time frame: Day 4, Day 11, and Day 13

    A 12-lead ECG was recorded with the participant in a semi-recumbent or supine position, after 5 minutes of rest using an ECG machine. Clinically significant abnormal findings are those which are not associated with the underlying disease, unless judged by the investigator to be more severe than expected for the participant's condition. Data for the number of participants with abnormal clinically significant 12-Lead ECG findings have been presented.

  16. Part 2: Number of Participants With Abnormal Clinically Significant Changes in 12-Lead ECG Findings

    Time frame: Day 4, Day 10, and Day 12

    A 12-lead ECG was recorded with the participant in a semi-recumbent or supine position, after 5 minutes of rest using an ECG machine. Clinically significant abnormal findings are those which are not associated with the underlying disease, unless judged by the investigator to be more severe than expected for the participant's condition. Data for the number of participants with abnormal clinically significant 12-Lead ECG findings have been presented.

  17. Part 1: Number of Participants With Abnormal Clinically Significant Changes in Vital Signs: Diastolic Blood Pressure (DBP), Systolic Blood Pressure (SBP), and Heart Rate

    Time frame: Day 11 and Day 13

    Vital signs including diastolic blood pressure (DBP), systolic Blood Pressure (SBP), and heart rate were measured in a sitting position after resting for at least 5 minutes. Clinically significant abnormal findings are those which are not associated with the underlying disease, unless judged by the investigator to be more severe than expected for the participant's condition. Data for the number of participants with abnormal clinically significant changes for vital signs have been presented.

  18. Part 2: Number of Participants With Abnormal Clinically Significant Changes in Vital Signs: DBP, SBP, and Heart Rate

    Time frame: Day 10 and Day 12

    Vital signs including DBP, SBP, and heart rate were measured in a sitting position after resting for at least 5 minutes. Clinically significant abnormal findings are those which are not associated with the underlying disease, unless judged by the investigator to be more severe than expected for the participant's condition. Data for the number of participants with abnormal clinically significant changes for vital signs have been presented.

  19. Part 1: Number of Participants With Abnormal Clinically Significant Changes in Vital Signs: Respiratory Rate and Oral Temperature

    Time frame: Day 13

    Vital signs including respiratory rate and oral temperature were measured after resting for at least 5 minutes in a sitting position. Clinically significant abnormal findings are those which are not associated with the underlying disease, unless judged by the investigator to be more severe than expected for the participant's condition. Data for the number of participants with abnormal clinically significant changes for vital signs have been presented.

  20. Part 2: Number of Participants With Abnormal Clinically Significant Changes in Vital Signs: Respiratory Rate and Oral Temperature

    Time frame: Day 12

    Vital signs including respiratory rate and oral temperature were measured after resting for at least 5 minutes in a sitting position. Clinically significant abnormal findings are those which are not associated with the underlying disease, unless judged by the investigator to be more severe than expected for the participant's condition. Data for the number of participants with abnormal clinically significant changes for vital signs have been presented.

  21. Part 1: Number of Participants With Abnormal Clinically Significant Changes in Physical Examination

    Time frame: Up to Day 13

    Physical examination included assessment of the head, eyes, ears, nose, throat, neck, chest, lungs, abdomen, musculoskeletal, dermatological, cardiovascular/peripheral vascular, and general neurological examination. Clinically significant abnormal findings are those which are not associated with the underlying disease, unless judged by the investigator to be more severe than expected for the participant's condition. Data for the number of participants with abnormal clinically significant changes in physical examination has been presented.

  22. Part 2: Number of Participants With Abnormal Clinically Significant Changes in Physical Examination

    Time frame: Up to Day 12

    Physical examination included assessment of the head, eyes, ears, nose, throat, neck, chest, lungs, abdomen, musculoskeletal, dermatological, cardiovascular/peripheral vascular, and general neurological examination. Clinically significant abnormal findings are those which are not associated with the underlying disease, unless judged by the investigator to be more severe than expected for the participant's condition. Data for the number of participants with abnormal clinically significant changes in physical examination has been presented.

  23. Part 1: Number of Participants With Abnormal Clinically Significant Changes in Hematology Parameters

    Time frame: Up to Day 13

    Blood samples were collected to analyze hematology parameters: Basophils, Eosinophils, Lymphocytes, Monocytes, Neutrophils, Hematocrit, Hemoglobin, Platelets, and Erythrocytes. Clinically significant abnormal findings are those which are not associated with the underlying disease, unless judged by the investigator to be more severe than expected for the participant's condition. Number of participants with abnormal clinically significant changes in hematology parameters were reported.

  24. Part 2: Number of Participants With Abnormal Clinically Significant Changes in Hematology Parameters

    Time frame: Up to Day 12

    Blood samples were collected to analyze hematology parameters: Basophils, Eosinophils, Lymphocytes, Monocytes, Neutrophils, Hematocrit, Hemoglobin, Platelets, and Erythrocytes. Clinically significant abnormal findings are those which are not associated with the underlying disease, unless judged by the investigator to be more severe than expected for the participant's condition. Number of participants with abnormal clinically significant changes in hematology parameters were reported.

  25. Part 1: Number of Participants With Abnormal Clinically Significant Changes in Clinical Chemistry Parameters

    Time frame: Up to Day 13

    Blood samples were collected to analyze clinical chemical parameters: albumin, alkaline phosphatase, alanine aminotransferase, aspartate aminotransferase, calcium, chloride, creatinine kinase, creatinine, gamma glutamyl transferase, glucose, phosphate, potassium, sodium, total, direct, and indirect bilirubin, protein, urea, and urate. Clinically significant abnormal findings are those which are not associated with the underlying disease, unless judged by the investigator to be more severe than expected for the participant's condition. Number of Participants with abnormal clinically significant changes in clinical chemistry parameters were reported.

  26. Part 2: Number of Participants With Abnormal Clinically Significant Changes in Clinical Chemistry Parameters

    Time frame: Up to Day 12

    Blood samples were collected to analyze clinical chemical parameters: albumin, alkaline phosphatase, alanine aminotransferase, aspartate aminotransferase, calcium, chloride, creatinine kinase, creatinine, gamma glutamyl transferase, glucose, phosphate, potassium, sodium, total, direct, and indirect bilirubin, protein, urea, and urate. Clinically significant abnormal findings are those which are not associated with the underlying disease, unless judged by the investigator to be more severe than expected for the participant's condition. Number of Participants with abnormal clinically significant changes in clinical chemistry parameters were reported.

  27. Part 1: Number of Participants With Abnormal Clinically Significant Changes in Coagulation Parameters

    Time frame: Up to Day 13

    Blood samples were collected to analyze coagulation parameters: activated partial thromboplastin time, prothrombin time international (Intl.) normalized ratio, and prothrombin time. Clinically significant abnormal findings are those which are not associated with the underlying disease, unless judged by the investigator to be more severe than expected for the participant's condition. Number of Participants with abnormal clinically significant changes in coagulation parameters were reported.

  28. Part 2: Number of Participants With Abnormal Clinically Significant Changes in Coagulation Parameters

    Time frame: Up to Day 12

    Blood samples were collected to analyze coagulation parameters: activated partial thromboplastin time, prothrombin time international (Intl.) normalized ratio, and prothrombin time. Clinically significant abnormal findings are those which are not associated with the underlying disease, unless judged by the investigator to be more severe than expected for the participant's condition. Number of Participants with abnormal clinically significant changes in coagulation parameters were reported.

  29. Part 1: Number of Participants With Abnormal Clinically Significant Changes in Urinalysis

    Time frame: Up to Day 13

    Urine samples were collected to analyze urinalysis parameters: specific gravity and potential of hydrogen (pH). Bilirubin, blood (occult), glucose, ketones, leukocyte esterase, nitrite, protein, urobilinogen were analyzed by dipstick. The dipstick test gives results in a semi-quantitative manner, and results can be read as Negative, Trace, 1+, 2+ indicating proportional concentrations in the urine sample. Clinically significant abnormal findings are those which are not associated with the underlying disease, unless judged by the investigator to be more severe than expected for the participant's condition. Number of Participants with abnormal clinically significant changes in urinalysis parameters were reported.

  30. Part 2: Number of Participants With Abnormal Clinically Significant Changes in Urinalysis

    Time frame: Up to Day 12

    Urine samples were collected to analyze urinalysis parameters: specific gravity and potential of hydrogen (pH). Bilirubin, blood (occult), glucose, ketones, leukocyte esterase, nitrite, protein, urobilinogen were analyzed by dipstick. The dipstick test gives results in a semi-quantitative manner, and results can be read as Negative, Trace, 1+, 2+ indicating proportional concentrations in the urine sample. Clinically significant abnormal findings are those which are not associated with the underlying disease, unless judged by the investigator to be more severe than expected for the participant's condition. Number of Participants with abnormal clinically significant changes in urinalysis parameters were reported.

Sponsors and collaborators

Lead sponsor

Bellus Health Inc. - a GSK company

Industry

Registry information

Official study title

A Phase 1, 2-part, Open-label, Fixed-sequence Study Evaluating the Effect of Rifampin (Part 1) and Rabeprazole (Part 2) on the Pharmacokinetics of a Single Dose of Camlipixant (BLU-5937) 50 mg Tablet in Healthy Participants Under Fasting Conditions

Important dates

Study start
2023
Primary completion
2023
Study completion
2023
First posted
Jun 12, 2023
Registry last updated
Dec 4, 2024

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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