sentences:  EXO set a limit on neutrinoless beta decay of 1.6×1025 years in 2012.A revised analysis of run 2 data with 100 kg·yr exposure, reported in the June issue of "Nature" reduced the limits on half-life to 1.1×1025 yr, and mass to 450 meV.This was used to confirm the power of the design and validate the proposed expansion.