Four weeks of paritaprevir/ritonavir/ombitasvir plus dasabuvir encountering dengue fever resulted in sustained virological response in an HCV patient: A case report.

BACKGROUND: Direct antiviral agent (DAA) has been the standard of care for patients with hepatitis C virus (HCV) infection. Twelve weeks of paritaprevir/ritonavir/ombitasvir plus dasabuvir (PROD) with or without ribavirin has shown to have a sustained virological response at post-treatment 12 weeks (SVR12) rate of >90% in HCV genotype 1 (HCV-1) patients.

METHODS: We report a HCV-1b patient who received only 25 days of PROD treatment.

RESULTS: The patient early terminated treatment due to dengue fever but eventually achieved SVR12. It may attribute to low baseline viral loads and extraordinarily rapid suppression of HCV after treatment day1.

CONCLUSIONS: The finding may shed light for possible response-guided-therapy for so-called ultra-super-responders in the DAA era. Whether the dengue virus, the Flaviviridae family as with HCV, enhanced the HCV clearance remains unclear and needs further exploration.