Five athletes tested positive for the stimulant bromantan and were disqualified by the IOC, but later reinstated after an appeal to the Court of Arbitration for Sport: swimmers Andrey Korneyev and Nina Zhivanevskaya , Greco-Roman wrestler Zafar Guliyev and sprinter Marina Trandenkova , all from Russia, and the Lithuanian track cyclist Rita Razmaitė . Dr. Vitaly Slionssarenko, physician to the Lithuanian cycling team and team coach Boris Vasilyev were expelled from the games.    The CAS overturned the IOC decision, because bromantan had only recently been added to the prohibited list,  and the athletes and officials were reprimanded.    The Russians had argued that bromantans wasn't a stimulant and thus not banned.  
The Oswald Commission has announced that all hearings for active athletes who could qualify for the Olympic Winter Games PyeongChang 2018 will be completed by the end of November 2017. In accordance with the World Anti-Doping Code, confidentiality has to be respected in the interests of the athletes concerned. The purpose of this work is to ensure that the International Federations (IFs) have the necessary tools to protect the qualification competitions. The outcome of the hearings will be announced as soon as possible after each individual hearing. This will allow the IFs to follow up with their own disciplinary hearings immediately, and to take the athletes concerned out of the qualification system as soon as possible.