Grazoprevir and Elbasvir Without Ribavirin for 12 Weeks in Patients With HCV-related Cryoglobulinemic Nephropathy

Study Overview
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Brief Summary
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CryoKid is a no-profit, multi-center, single-arm, open-label, pilot study. The study aims to evaluate the tolerability of MK-8742 (Elbasvir) / MK-5172 (Grazoprevir) administrated for 12 weeks without Ribavirin in patients with HCV chronic hepatitis (G1b and G4) and cryoglobulinemic nephropathy.

Official Title
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A Multicenter, Open Label, Pilot Study of MK-5172 (Grazoprevir)/MK-8742 (Elbasvir) Without Ribavirin for 12 Weeks in G1b and G4 Patients With HCV-related Cryoglobulinemic Nephropathy

Conditions
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Hepatitis C, Cryoglobulinaemic Glomerulonephritis

Intervention / Treatment
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* Drug: Elbasvir/Grazoprevir


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Informed consent form signed, Male or female at least 18 years of age at time of Screening. Chronic infection with Hepatitis C virus G1b Chronic infection with Hepatitis C virus G4 naïve, and experienced with baseline HCV RNA level <800,000 IU/ml Metavir score ranging between F0-F4 (with Child-Pugh score ranging from A5 to A6) Diagnosis of mixed cryoglobulinemia MC (type III or II) according to standard criteria Chronic renal impairment due to cryoglobulinemic nephropathy. Subjects with renal impairment will include CKD Stage 5 (eGFR < 15mL/min or dialysis dependent), CKD Stage 4 (eGFR 15-29 mL/min), CKD Stage 3 eGFR (30-59 mL/min) and CKD Stage 2 (60-89 mL/min) HCV patients. Albumin level ≥ 3.0 g/dl, Platelet count ≥ 75 x 103/μL. Exclusion Criteria: Age <18 years Chronic infection with Hepatitis C virus G4 experienced with baseline HCV RNA level >800,000 IU/ml Patients with HCV genotype 1a, 2, 3, 5, 6, Coexistence of life-threatening condition(s) unrelated to MC Diagnosis of malignancy Pregnancy or breast feeding. Child-Pugh score > A6 Decompensated cirrhosis or previous decompensation Platelet count < 75 x 103/μL Albumin level < 3 g/l Co-infection with more than one HCV genotype. Any serious or active medical illness which, in the opinion of the investigator, would interfere with subject treatment, assessment, or compliance HIV or chronic hepatitis B virus (HBV) infection (HBsAg positive) Known hypersensitivity to Grazoprevir, Elbasvir or any of its components

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Intervention/Treatment |
| --- |
|Drug: Elbasvir/Grazoprevir|Administration of MK-8742 (Elbasvir)/MK-5172 (Grazoprevir) for 12 weeks|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| SVR12 | Percentage of participants achieving sustained virologic response 12 weeks after completing treatment (SVR12) | march 2018-october 2018 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| SVR24 | Percentage of participants achieving Sustained Virologic Response 24 weeks after ending study treatment (SVR 24) | march 2018-december 2018 | 
| Clinical response: improvement or disappearance of MC clinical and biochemical stigmata | Clinical response: improvement or disappearance of MC clinical and biochemical stigmata at the EOT, at week 12 and week 24 of follow-up. Improvement of the renal function at week 4, week 8, EOT at week 12 and week 24 of follow-up. | march 2018-december 2018 | 
| Tolerability: Number of participants experiencing an adverse event (AE) | Tolerability: Number of participants experiencing an adverse event (AE) | march 2018-may 2018 |