Gene-edited CRISPR mushroom escapes US regulation A fungus engineered with the CRISPR–Cas9 technique can be cultivated and sold without further oversight.

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There has been a lot of discussion about how products developed with the new gene editing technique CRIPSPR are going to be regulated. The USDA has determined that they will not regulate a mushroom produced using gene-editing via CRISPR. This is the first CRIPSPR-edited product to receive the go-ahead from the US government. The mushroom was edited to remove genes to reduce browning.
Read article from Nature.