The Referral Filter: How Britain's Gene-Editing Trials Find Their Patients — and Who Never Gets the Letter
Recruitment maps for UK CRISPR studies cluster around a small number of teaching hospitals, and the same communities recur in cohort after cohort. The explanation lies less in patient preference than in referral routes: who knows a trial exists, which clinicians think to mention it, and what happens to families outside those networks. This is a practical look at the infrastructure Britain would need to find the second, third and hundredth patient as reliably as the first.