After the FDA granted orphan drug designation to its Factor IX gene-editing product candidate, SB-FIX, as a treatment for hemophilia B, Wells Fargo analyst Jim Birchenough calls Sangamo BioSciences an "attractive new investment opportunity." Along with validating a commercial opportunity in hemophilia, SB-FIX could provide "even more valuable validation of targeting and coopting the albumin gene locus for gene insertion that may apply to a wide variety of genetic diseases," Birchenough tells investors in a research note. He keeps an Outperform rating on the shares.