[en] The Inetracting Boson Model - 2 (IBM-2) has been applied to a wide variety of nuclei covering from vibrational to rotational. There are four essential parameters in the IBM-2 phenomenology. The systematics of these parameters as functions of the neutron and the proton numbers has been clarified considerably well. Thus, it became possible to make predictions based on the systematics. Such predictions are mainly for nuclei far from stability. The Xe-Ba-Ce region is taken as an example. There are IBM-2 predictions for exciation energies, B(E2)'s, etc. The B(E2;0₁⁺ → 2₁⁺) calculated as a function of the neutron number shows a distinct peak at the middle of the N = 50 - 82 shell. This B(E2) value has not been measured around the predicted peak. If the position of the peak is found at a different position, the guiding principle of the IBM-2 phenomenology should be modified in the relation to the particle-hole transformation. (author)