  Lorentz and CPT violation can affect the rates for $t$-$\ol t$ production and
decay. The Lorentz-violating coefficients in the Standard-Model Extension
responsible for modifying the top-quark events have recently been bounded by
the D0 Collaboration. To extend the analysis to the LHC the calculations need
to be extended to include the gluon fusion production mechanism. Some of the
first results of this program were presented at the Meeting.
