  We derive the O(p6) Chiral Perturbation Theory Lagrangian in the massless
quark limit for a class of gravity dual models of Quantum Chromodynamics with
the chiral symmetry broken through boundary conditions. The odd O(p6) couplings
are related to the O(p4) low-energy constants (LEC's) in the even-parity
sector. Some combinations of even O(p6) couplings are found to be universal and
independent of the peculiarities of the model. These relations turn out to be
the manifestation at low energies of a broader relation between anomalous and
even-parity amplitudes.
