- Positive one-year results show SB4 etanercept and SB2 infliximab investigational biosimilar candidates sustained comparable safety profiles observed in previously announced primary results 24-week results for SB5 adalimumab investigational biosimilar candidate demonstrate equivalent efficacy and comparable safety to Humira(R) SB4, SB2 and SB5 study results to be presented at 2015 ACR/ARHP Annual Meeting Samsung Bioepis Co., Ltd. announced that SB4 etanercept and SB2 infliximab investigational