conditional mutual information

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I have a question about mutual information

$$I(Z ; T/X,Y) = I(T/X,Y ; Z)$$ $T,X,Y,Z$ are random variables

is this statement accurate? if it is true and I know that I(Z;T/X,Y) = H(Z/X,Y) - H(Z/T,X,Y) how can I analyze I(T/X,Y ; Z) ?