 On January 20, 2015 Kaniskina was disqualified for 3 years and 2 months starting from 15 October 2012, and all her results between 15 July 2009 and 16 September 2009, as well as between 30 July 2011 and 8 November 2011 (which included two world championship golds) were annulled.The reason for the ban was anomalies in her biological passport.On March 25, 2015, the IAAF filed an appeal with the Court of Arbitration in Lausanne, Switzerland, questioning the selective disqualification of the suspension periods of the six athletes involved, including the one for Kaniskina which had allowed her to keep her Olympic silver medal.