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2018 ; 11
(ä): 895-901
Nephropedia Template TP
Hassan AM
; Osman HA
; Mahmoud HS
; Hassan MH
; Hashim AA
; Ameen HH
Infect Drug Resist
2018[]; 11
(ä): 895-901
PMID29983581
show ga
BACKGROUND AND AIMS: Hepatitis C virus (HCV) infection is associated with
extrahepatic manifestations such as cryoglobulinemia and accounts for up to 90%
of all cases of mixed cryoglobulinemia (MC). The present study aimed to evaluate
the effect of sofosbuvir-daclatasvir therapy on symptomatic HCV-related MC and
sustained virologic response (SVR) achievement. PATIENTS AND METHODS: This
prospective cohort study was carried out on 120 patients with chronic HCV
infection, clinically suspected to have MC, but only 63 of whom were positive for
cryoglobulins. HCV-MC patients were treated with sofosbuvir 400 mg and
daclatasvir 60 mg once daily for 3 months. The serum cryoglobulins levels,
complement 3 (C3), complement 4 (C4) (using ELISA assay kits) and rheumatoid
factor (RF) (using immunoturbidimetric assay kit), were measured in the included
HCV infected patients (to confirm HCV-MC diagnosis), in addition to quantitave
HCV-RNA assays, using real time PCR. All these measurements have been done before
stating therapy and 12, 24 weeks post-therapy for assessments of immunological
recovery, viral load and SVR. RESULTS: Significant increase in the serum
cryoglobulin levels and RF with significant decrease in C3 and C4 serum levels
were detected in only 63 out of 120 included HCV infected patients, upon whom the
study has been completed. They showed significant decrease in their mean
cryoglobulin levels from 41.47 µg/mL ±12.32 SD to 5.12 µg/mL ±3.59 SD then to
5.09 µg/mL ±3.02 SD, 12 to 24 weeks post-therapy respectively (p<0.001), with
significant decline in RF concentrations and rise in C3 and C4 serum levels
approaching the normal values. There were improvements in the presenting HCV-MC
clinical manifestations in variable degrees, ranging from 5 (71.42%) in patients
with glomerulonephritis to 62 (98.4%) in patients with purpura. Eighty-seven
percent of the included patients showed complete response (clinical, virological
and immunological recovery) and 13% showed partial response (virological and
immunological recovery without clinical improvement of cryoglobulinemia
associated manifestations). CONCLUSION: A combined therapy of sofosbuvir 400 mg
and daclatasvir 60 mg once daily for 3 months was associated with a significant
decrease in serum cryoglobulin levels and appears as a reasonable treatment
option for HCV-associated MC.