Light-ray evolution equations and leading-twist parton helicity-dependent nonforward distributions

We discuss the calculation of the evolution kernels ΔWξ(X,Z) for the leading-twist nonforward parton distributions gξ(X,t) sensitive to parton helicities. We present our results for the kernels governing evolution of the relevant light-ray operators and describe a simple method allowing to obtain from them the components of the nonforward kernels ΔWξ(X,Z).