Tenofovir Monotherapy in Patients With Chronic Hepatitis B Patients Who Had Achieved Complete Viral Suppression on Entecavir Plus Tenofovir

Investigation of Efficacy of Tenofovir Monotherapy in Comparison With Entecavir Plus Tenofovir in Patients With Chronic Hepatitis B Patients Who Had Achieved Complete Viral Suppression on Entecavir Plus Tenofovir Combination Therapy-Multicenter Randomized Open-label Controlled Trial

Little is known about efficacy of switching to tenofovir monotherapy for multidrug-resistant chronic ehpatitis B patients who achieved a complete virological response to entecavir and tenofovir. This study aimed to investigate the efficacy of switching to tenofovir monotherapy for multidrug-resistant chronic hepatitis B patients with undetectable heaptitis B virus DNA while on tenofovir plus entecavir combination therapy.

Inclusion Criteria:

• HBsAg (+) for > 6 months age >19 years antiviral resistance to LAM(rtL180M and/or M204V/I) & ADV (rtA181V/T and/or rtN236T) or ETV (rtT184A/C/F/G/I/L/S, rtS202G, or rtM250L/V, in addition to rtM204V/I) HBV DNA levels <20 IU/ml on two consecutive tests of 3-month interval currently receiving TDF+ETV for more than 12 months

Exclusion Criteria:

• Cr ≥1.5 mg/dL Evidence of decompensated liver disease Malignant neoplasm Coinfection with HIV, HCV