The CD2-like African swine fever virus (ASFV) gene 8DR, (also known as EP402R) encodes for a structural transmembrane glycoprotein that has been shown to mediate hemadsorption and be involved in host immunomodulation as well as the induction of protective immune response. In addition, several natural ASFV isolates showing decreased virulence in swine has been shown to be non-hemadsorbing suggesting an association between altered or deleted forms of 8DR and virus attenuation. Here we demonstrate that deletion of 8DR gene from the genome of ASFV Georgia2010 isolate (ASFV-G-Δ8DR) does not significantly alter the virulence of the virus. ASFV-G-Δ8DR inoculated intramuscularly or intranasally (in a range of 10 2 to 10 4 tciD 50) produced a clinical disease in domestic pigs indistinguishable from that induced by the same doses of the virulent parental ASFV Georgia2010 isolate. In addition, viremia values in ASFV-G-Δ8DR do not differ from those detected in animals infected with parental virus. Therefore, deletion of 8DR gene is not associated with a noticeable decrease in virulence of the ASFV Georgia isolate. African swine fever virus (ASFV) a large double stranded DNA virus and etiological agent that causes African swine fever (ASF). Depending on the isolate, swine infected with ASFV can have disease that ranges from sub-clinical to disease in which can be highly lethal 1. ASF has been endemic in several sub-Saharan African countries and also in Sardinia (Italy). Recently, outbreaks of ASF have occurred in Eastern Europe and southeast Asia. These outbreaks have all originated with from an outbreak in the Caucasus region that occurred in 2007 2. The isolate that is involved in the current outbreak called Georgia/2007 is highly contagious and lethal in domestic pigs. This high rate of lethality has the potential to cause large losses of domestic pigs 3. There are no vaccines currently available to prevent ASF (1). Development of experimental live-attenuated ASF vaccines, have mainly relied on the production of recombinant field isolates by genetic manipulation, in which one or more genes have been deleted from the field isolate 4-6. Therefore, understanding the role of viral genes in virulence and their possible manipulation to develop attenuated virus strains to produce experimental vaccines is a critical issue. Since its original description, the CD2-like African swine fever virus (ASFV) gene (8DR) has been the focus of intense research. 8DR protein has been shown to be responsible for mediating hemadsorption 7,8 , being critical in virus replication in tick cells 9 , immunomodulate the host response 10 , and is actively involved in the induction of protective immune response 11,12 .