CRISPR gene editing can sometimes cause off-target effects, where the DNA is cut in the wrong place.

One challenge with CRISPR is that the guide RNA can occasionally lead Cas9 to similar, but incorrect DNA sequences. This can result in unintended cuts or edits, which might cause unexpected effects. Scientists are actively working on improving the precision of CRISPR by designing better guide RNAs and using modified versions of Cas9 that reduce off-target activity. Managing these risks is crucial for safe gene editing, especially in medical applications.