Study to Investigate the Influence of Hepatic Insufficiency on the Pharmacokinetics of Grazoprevir (MK-5172-013)

Study Overview
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Brief Summary
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This study will compare the pharmacokinetics (PK) of grazoprevir (MK-5172) when administered to participants with mild, moderate or severe hepatic insufficiency (assessed by the criteria of the Child-Pugh's scale) with the PK of grazoprevir when administered to healthy participants.

Official Title
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An Open-label, 3-Part, Multiple Dose Study to Investigate the Influence of Hepatic Insufficiency on the Pharmacokinetics of Grazoprevir (MK-5172)

Conditions
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Hepatitis C

Intervention / Treatment
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* Drug: Grazoprevir


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: If female, must be of non-childbearing potential or willing to use at least 2 acceptable methods of contraception from enrollment to 2 weeks after the last dose of study drug No clinically significant abnormality on electrocardiogram Hepatic Insufficiency Participants Only: Other than hepatic insufficiency with features of cirrhosis, is otherwise in good health based on medical history, physical examination, vital signs, and laboratory safety tests Chronic (>6 months), stable (no acute episodes of illness within the previous 2 months due to deterioration in hepatic function) hepatic insufficiency with features of cirrhosis due to any etiology Score on the Child-Pugh scale must range from 5 to 6 (mild hepatic insufficiency) to from 7 to 9 (moderate hepatic insufficiency) to from 10 to 15 (severe hepatic insufficiency) Matched Healthy Participants Only: - In good health based on medical history, physical examination, vital signs, and laboratory safety tests Exclusion Criteria: History of any illness that might confound the results of the study or poses an additional risk to the participant History of clinically significant endocrine, gastrointestinal (other than related to their hepatic impairment), cardiovascular, hematological, immunological, renal, respiratory, or genitourinary abnormalities or diseases Pregnancy Estimated creatinine clearance of ≤60 mL/min History of stroke, chronic seizures, or major neurological disorder History of neoplastic disease (including leukemia, lymphoma, malignant melanoma), or myeloproliferative disease, regardless of the time since treatment Unable to refrain from or anticipates the use of any medication, including prescription and non-prescription drugs or herbal remedies (such as St. John's Wort, green tea, gingko, coenzyme Q, ginseng, echinacea, etc.) or nutritional supplements (e.g., garlic supplements), beginning approximately 2 weeks (or 5 half-lives) prior to administration of the initial dose of study drug, throughout the study, until the poststudy visit Participated in another investigational study within 4 weeks History of significant multiple and/or severe allergies or has had an anaphylactic reaction or significant intolerability to prescription or non-prescription drugs or food Hepatic Insufficiency Participants Only: - Has a history of hepatitis C infection by serology, regardless of most recent viral load status. Matched Healthy Participants Only: History of any chronic and/or active hepatic disease including elevations of serum transaminases, hepatitis, biliary tract disease, or a history of any significant gastrointestinal surgery. History of hepatitis C. Participants with a history of self-limited hepatitis A with complete resolution documented at least 6 months prior to entry will be eligible for inclusion

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 65 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Non-Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Experimental: Part 1-Mild Hepatic Impairment (HI)<br>Participants with mild hepatic impairment will receive 200 mg of Grazoprevir once a day for 10 consecutive days during Part 1 of the study. | Drug: Grazoprevir<br>* Part 1: oral morning dose of 200 mg daily for 10 days Part 2: oral morning dose of 100 mg daily for 10 days Part 3: oral morning dose of 50 mg daily for 10 days<br>|
| Experimental: Part 1-Healthy Matched to Mild HI<br>Healthy participants will receive 200 mg of Grazoprevir once a day for 10 consecutive days during Part 1 of the study. | Drug: Grazoprevir<br>* Part 1: oral morning dose of 200 mg daily for 10 days Part 2: oral morning dose of 100 mg daily for 10 days Part 3: oral morning dose of 50 mg daily for 10 days<br>|
| Experimental: Part 2-Moderate HI<br>Participants with moderate hepatic impairment will receive 100 mg of Grazoprevir once a day for 10 consecutive days during Part 2 of the study. | Drug: Grazoprevir<br>* Part 1: oral morning dose of 200 mg daily for 10 days Part 2: oral morning dose of 100 mg daily for 10 days Part 3: oral morning dose of 50 mg daily for 10 days<br>|
| Experimental: Part 2-Healthy Matched to Moderate HI<br>Healthy participants will receive 100 mg of Grazoprevir once a day for 10 consecutive days during Part 2 of the study. | Drug: Grazoprevir<br>* Part 1: oral morning dose of 200 mg daily for 10 days Part 2: oral morning dose of 100 mg daily for 10 days Part 3: oral morning dose of 50 mg daily for 10 days<br>|
| Experimental: Part 3-Severe HI<br>Participants with severe hepatic impairment will receive 50 mg of Grazoprevir once a day for 10 consecutive days during Part 3 of the study. | Drug: Grazoprevir<br>* Part 1: oral morning dose of 200 mg daily for 10 days Part 2: oral morning dose of 100 mg daily for 10 days Part 3: oral morning dose of 50 mg daily for 10 days<br>|
| Experimental: Part 3-Healthy Matched to Severe HI<br>Healthy participants will receive 50 mg of Grazoprevir once a day for 10 consecutive days during Part 3 of the study. | Drug: Grazoprevir<br>* Part 1: oral morning dose of 200 mg daily for 10 days Part 2: oral morning dose of 100 mg daily for 10 days Part 3: oral morning dose of 50 mg daily for 10 days<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Area Under the Concentration Time-curve From 0 to 24 Hours (AUC0-24) of Grazoprevir | Blood samples were collected at pre-dose, and from 0.5 to 24 hours post-dose on Days 1 and 10 in order to determine the plasma AUC0-24 of Grazoprevir. Classification of HI based on the Child-Pugh scale, where a score of 5-6 = Mild HI; a score of 7-9 = Moderate HI; and a score of 10-15 = Severe HI. | Days 1 and 10 at the following timepoints: pre-dose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, 16 and 24 hours post-dose | 
| Maximum Concentration (Cmax) of Grazoprevir | Blood samples were collected at pre-dose, and from 0.5 to 24 hours post-dose on Days 1 and 10 in order to determine the plasma Cmax of Grazoprevir. Classification of HI based on the Child-Pugh scale, where a score of 5-6 = Mild HI; a score of 7-9 = Moderate HI; and a score of 10-15 = Severe HI. | Days 1 and 10 at the following timepoints: pre-dose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, 16 and 24 hours post-dose | 
| Time to Peak Concentration (Tmax) of Grazoprevir | Blood samples were collected at pre-dose, and from 0.5 to 24 hours post-dose on Days 1 and 10 in order to determine the plasma Tmax of Grazoprevir. Classification of HI based on the Child-Pugh scale, where a score of 5-6 = Mild HI; a score of 7-9 = Moderate HI; and a score of 10-15 = Severe HI. | Days 1 and 10 at the following timepoints: pre-dose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, 16 and 24 hours post-dose | 
| Concentrations 24 Hours Post-dose (C24) of Grazoprevir on Day 1 for Participants With Mild HI and Moderate HI and Healthy Matched to Mild HI and Moderate HI | Blood samples were collected at 24 hours post-dose on Day 1 in order to determine the plasma C24 of Grazoprevir. Classification of HI based on the Child-Pugh scale, where a score of 5-6 = Mild HI; a score of 7-9 = Moderate HI; and a score of 10-15 = Severe HI. | Day 1 at 24 hours postdose | 
| Concentrations 24 Hours Post-dose (C24) of Grazoprevir on Day 1 for Participants With Severe HI and Healthy Matched to Severe HI | Blood samples were collected at 24 hours post-dose on Day 1 in order to determine the plasma C24 of Grazoprevir. Classification of HI based on the Child-Pugh scale, where a score of 5-6 = Mild HI; a score of 7-9 = Moderate HI; and a score of 10-15 = Severe HI. | Day 1 at 24 hours postdose | 
| Concentrations 24 Hours Post-dose (C24) of Grazoprevir on Day 10 | Blood samples were collected at 24 hours post-dose on Day 10 in order to determine the plasma C24 of Grazoprevir. Classification of HI based on the Child-Pugh scale, where a score of 5-6 = Mild HI; a score of 7-9 = Moderate HI; and a score of 10-15 = Severe HI. | Days 10 at 24 hours postdose | 
| Apparent Terminal Half-life (t1/2) of Grazoprevir | Blood samples were collected at pre-dose, and from 0.5 to 24 hours post-dose on Day 10 in order to determine the plasma t1/2 of Grazoprevir. Classification of HI based on the Child-Pugh scale, where a score of 5-6 = Mild HI; a score of 7-9 = Moderate HI; and a score of 10-15 = Severe HI. | Day 10 at the following timepoints: pre-dose, 0.5, 1, 1.5, 2, 3, 4, 6, 8, 12, 16 and 24 hours post-dose |