Abstract
To investigate hepatitis C virus (HCV) and GBV-C/hepatitis G virus (HGV) genotype prevalence among HCV-infected porphyria cutanea tarda (PCT) patients, 19 HCV-infected patients with associated PCT were studied. A control group of 53 age-matched HCV-infected patients without associated PCT was selected. Eighteen of the 19 serologically positive HCV-PCT patients showed HCV RNA in serum. Genotype 1b was the most prevalent among both HCV-PCT patients (72.2%; 13/18) and age-matched HCV controls (50.9%; 27/53). Such different genotypic prevalence failed to reach statistical significance (χ<sup>2</sup> with Yates’ correction, p = 0.19). The single HCV-PCT patient without detectable HCV RNA was also infected with genogroup 3 GBV-C/HGV. This GBV-C/HGV RNA prevalence (5.3%) among HCV-PCT patients is not statistically different from that observed among Argentine blood donors (5.5%; 11/200). To our knowledge, these results show for the first time the molecular epidemiology of both HCV and GBV-C/HGV associated to PCT in America.
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