Undefeated IBF and WBO middleweight champion Janibek Alimkhanuly has failed a Voluntary Anti-Doping Agency drug test and his unification bout with WBA champ Erislandy Lara is off. Alimkhanuly and Lara were set to fight on Saturday in San Antonio on the undercard of Lamont Roach Jr. vs Isaac "Pitbull" Cruz.

News of Alimkhanuly's failed test broke on Tuesday afternoon and was confirmed when veteran boxing journalist Dan Rafael shared the VADA adverse analytical finding. In the VADA letter, the agency identified the presence of meldonium as the cause for the failed test.

The United States Anti-Doping Agency's substance profile on meldonium states, "In sport, evidence indicates that meldonium may increase endurance, improve rehabilitation following exercise, and enhance activations of the ce

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