As safe­ty looms larg­er in CAR-T re­search, study high­lights how small tweaks can make it eas­i­er to use

For all the promis­es of CAR-T ther­a­py, sig­nif­i­cant side ef­fects — no­tably life-threat­en­ing episodes of cy­tokine re­lease syn­drome and neu­ro­tox­i­c­i­ty — have lim­it­ed its use in close­ly mon­i­tored set­tings. As re­searchers seek new ap­proach­es to tamp down safe­ty con­cerns, a small clin­i­cal tri­al pub­lished in Na­ture Med­i­cine has of­fered the first glimpse of hope that small tweaks on ex­ist­ing mol­e­cules can make CAR-T safer while main­tain­ing its can­cer killing abil­i­ty.

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