El primer ensayo en Estados Unidos de una herramienta de edición genética llamada CRISPR contra el cáncer parece ir bien en tres pacientes hasta ahora, pero es demasiado pronto para saber si mejorará sus probabilidades de supervivencia, informaron los médicos.
Los doctores tomaron células del sistema inmunológico de los pacientes y las alteraron genéticamente para instruirlas a reconocer el cáncer y combatirlo, con efectos secundarios mínimos y manejables.
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