O-12 - DARPA rejected the DEFUSE proposal in 2018 citing gain-of-function biosafety concerns
The proposed work was not funded via DARPA; the leaked documents contain no direct evidence the furin-site-insertion experiments were subsequently run through another route.
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Why this is evidence
The proposed experiments went unfunded by this route, lowering the probability the specific engineered-FCS work was ever performed and so cutting against H-5 relative to H-1 and H-6. Partly offsets O-11.