RL against make-on-demand catalogs lifts KRAS molecule hits from 10% to 25.5%

bravo_abad · x · 2026-11-09

Neeser et al. train a flow-matching model that generates 3D molecules for protein binding pockets with RL, using a concrete reward: exact membership in the Enamine REAL make-on-demand catalog, instead of vague "synthetic accessibility" scores. For KRAS, unique catalog matches rose from 10.0% to 25.5% of candidates; longer training increased repetition, so an earlier checkpoint yielded more distinct testable compounds. Chart shows DNFT-REAL-S/FREE-S variants well above baseline while DPO variants lag. Caveat: catalog membership doesn't guarantee synthesizability.

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