Role of different direct-acting antiviral drugs on hepatitis C virus-associated mixed cryoglobulinemia in Egyptian patients

Background Several extrahepatic manifestations have been reported and mixed cryoglobulinemia is a clonal disorder of B cells which is strongly associated with hepatitis C virus (HCV). New regimens of direct-acting antiviral agents (DAAs) have recently been approved for the treatment of genotype 4 HCV which offer improved results of sustained virologic response (SVR) in the treatment-naive and previously treated patients. Aim To assess the prevalence of cryoglobulinemia for evaluating the efficacy of DAA therapy on it. Patients and methods Patients received one of the following regimens: sofosbuvir, daclatasvir±ribavirin, or sofosbuvir plus ledipasvir±ribavirin follow-up for 24 weeks after treatment. Results A total of 132 patients were involved in our study: 65 men and 67 women. Cryocrit-positive patients clinically presented with clinical manifestations in 32 (53.3%) patients out of the 60 patients. After 12 weeks of DAAs treatment, there was a significant reduction in cryoprecipitate level and rheumatoid factor (RF) level with improvement of glomerular filtration rate, basal C4, and clinical improvement of purpura, Raynaud’s phenomenon, and this was the same when 38 patients continued treatment for 24 weeks. However, comparing 12 and 24-week therapy showed significant improved difference in cryoprecipitate level but improved glomerular filtration rate, basal C4, and decreased level of RF, proteinuria, purpura, and peripheral neuropathy although it did not reach statistical significance Conclusion Cryocrit-positive patients were old age, cirrhotics with long duration of HCV. There is significant improvement of both laboratory and clinical parameters of cryoglobulinemia after SVR12 and more significant after SVR24. There is no significant difference in using different DDA regimen with or without ribavirin on the SVR at either 12 or 24 weeks. So, we advise basal laboratory and clinical parameters of mixed cryoglobulinemia before designing treatment regimens of HCV patients in Egypt.

Abstract licence: CC BY-NC-ND

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