Vitor BelfortUFC middleweight Vitor Belfort has taken to the Octagon four times since he last fought in Las Vegas. Though an appearance in Sin City is overdue for the seasoned veteran, it actually appears “The Phenom” may never throw down in the organization’s backyard again after Nevada Athletic Commission executive Keith Kizer recently revealed the State was not on board with Belfort undergoing testosterone replacement therapy based on a past infraction involving PED use.

Belfort, who only admitted to the controversial treatment after his January bout with Michael Bisping, failed a screening in 2006 for a banned substance. As a result, Kizer feels the NAC needs to set a precedent when it comes to certain matters since drug use could have caused the testosterone deficiency Belfort is currently dealing with.

“I don’t see Vitor Belfort getting a TRT exemption from us. I really don’t and I feel kind of bad for him in some ways because if he has learned from his mistakes and now he’s trying to do it the right way…his levels are low, the treatment is good for him and I hope he is doing that,” said Kizer to The Bleacher Report before adding, “The rules are the rules and you have to draw the line somewhere.”

Kizer also explained the difference between Belfort and a fighter like Chael Sonnen involves the use of steroids versus testosterone (such as Sonnen was suspended for in 2010 when TRT first showed up on MMA enthusiasts’ radar).

Belfort’s next bout is scheduled to take place in Brazil where he’ll face Luke Rockhold at UFC on FX 8.