The International Germanium Experiment (IGEX) is currently operating three 2-kg enriched germanium detectors in the Canfranc Underground Laboratory (Spain) at 2450 mwe, in a search for the neutrinoless double- beta decay of 76 Ge. The detectors are equipped with Pulse Shape Analysis electronics. This implementation of Pulse Shape Discrimination results in a rejection of 60%–80% of the background in the 2.0–2.5 MeV energy interval. Analysis of 116.75 mole-years of data yields a lower bound ≥ 1.57 × 1025y (or T120ν ≥ 1.13 × 10 25y without PSD) (90% C.L.) corresponding to 〈m ν 〉 < (0.33 – 1.31) eV, depending on the theoretical nuclear matrix elements used to extract the neutrino mass parameter.