CRISPR Hits a Snag: Our Immune Systems May Attack the Treatment

January 8, 2018

(STAT News) – A new paper points to a previously unknown hurdle for scientists racing to develop therapies using the revolutionary genome-editing tool CRISPR-Cas9: the human immune system. In a study posted Friday on the preprint site bioRxiv, researchers reported that many people have existing immune proteins and cells primed to target the Cas9 proteins included in CRISPR complexes. That means those patients might be immune to CRISPR-based therapies or vulnerable to dangerous side effects — the latter being especially concerning as CRISPR treatments move closer to clinical trials.

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