First Personalized CRISPR Treatment Gives Baby New Lease on Life

image via New Scientist

May 16, 2025, 5:00 PM

• •KJ Muldoon, a baby with a genetic disease, received a bespoke CRISPR treatment, becoming the first to undergo such therapy.
• •The treatment, designed to correct Muldoon's specific mutation, has shown promising results, but long-term effects are still under observation.
• •The rapid development of the therapy, in just six months, involved a collaborative effort and fast-tracked approval.
• •While the therapy is a milestone, its scalability and cost-effectiveness for treating other rare genetic diseases remain uncertain.

In a world first, a baby named KJ Muldoon received a personalized CRISPR gene-editing treatment to combat a rare genetic disease. This bespoke therapy, designed to address his specific mutation, has shown positive initial results, although it is still early to determine the long-term impact. The treatment's development was remarkably swift, involving a collaborative effort from various institutions and regulatory agencies. While this marks a significant advancement, the feasibility of applying such customized therapies to a broader range of ultra-rare genetic conditions remains a challenge.

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