Take a look at the link for Hepatitis C Acronyms/Abbreviations at the bottom right corner.
RVR: Rapid viral response - Undetected virus at 4 wks. Tx
cEVR: Complete Early Viral Response: PCR Und at Week 12 (P/R Tx)
EVR: Early Virological Response: >2 Log Drop at Wk. 12
eRVR - Extended Rapid Viral Response - Und virus @ Wk.4 - Wk. 12
Und : Undetected virus
SVR: Sustained Viral Response: Und after 6 months EOT