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Gilead Sciences is betting big on gene editing to improve its cell immunotherapy programs. But rather than embrace CRISPR, Gilead has partnered with Sangamo Therapeutics, a pioneer of an older gene-editing tool called the zinc finger nuclease (ZFN). Sangamo has amassed a large ZFN protein library, allowing it to link ZFNs together to target any site in the genome. Gilead will give Sangamo $150 million up front and up to $3 billion more if Gilead develops 10 or more new therapies.
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