A Nature Communications randomized trial of 355 lung and colorectal cancer charts finds research coordinators aided by a neurosymbolic language model beat unaided staff on eligibility prescreening. Chart-level accuracy rose to about 76 percent from about 71 percent, with the largest gains on biomarkers, staging, and outcomes. Average time per chart stayed near 37 minutes, so accuracy improved without a speed win under a full twelve-criteria review. AI alone scored about 60 percent overall. Caveat: the study used one closed-source model on retrospective PDFs, so enrollment lift and fairness across subgroups remain unproven.