  We stress that specific texture zeros of lepton mass matrices, which might
dynamically arise from a new kind of flavor symmetry, can help us to establish
simple and testable relations between the lepton flavor mixing parameters and
lepton mass ratios. We present a brief review of one-zero, two-zero and
three-zero textures of the neutrino mass matrix. Their phenomenological
consequences on neutrino mixing and CP violation are also discussed.
