This three-year study (participants with chronic kidney disease [CKD] or cirrhosis will be followed for five years) multicenter study is being done to follow participants who received at least one dose of grazoprevir (MK-5172) in a previous study to determine if they remain hepatitis C virus (HCV)-RNA negative over time, and to determine if they have developed antiviral resistance. The study will also evaluate long-term adverse events in this population.
Visit ClinicalTrials.gov for more information.
Study Coordinators and Research Nurses cannot give medical advice over the phone. Telephone numbers and email addresses are provided for obtaining additional information on specific clinical research trials only. If you have specific questions which require clinical expertise, please call your primary care physician.