After recent works of Gianluca Pacienza in collaboration with François Charles and Giovanni Mongardi, it seems possible to prove the existence of rational curves on irreducible symplectic varieties (IVS) of a fixed deformation type, starting from special points of their moduli spaces and using the parallel transport operators group. I will introduce this approach, used by Charles, Mongardi and Pacienza in the case of IVS that are deformation equivalent to one of the examples introduced by Arnaud Beauville, and I will tackle the open case of IVS deformation equivalent to the dimension 10 example due to Kieran O'Grady. Furthermore, I will explain some important consequence on the Chow group of 0-cycles of the variety.