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Baby Walks After Groundbreaking CRISPR Gene Therapy Success

12/21/2025

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Summary

Story summary

KJ Muldoon, a baby with a rare genetic disorder, began walking after CRISPR gene-editing therapy at the Children's Hospital of Philadelphia.
The treatment targeted his condition and helped him survive a life-threatening illness.
He spent ten months in the hospital and was discharged in June.
He has since celebrated his first birthday and prepared for Christmas at home.
The case has prompted discussion on personalized therapies for rare diseases.

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Story summary

KJ Muldoon, a baby with a rare genetic disorder, began walking after CRISPR gene-editing therapy at the Children's Hospital of Philadelphia.
The treatment targeted his condition and helped him survive a life-threatening illness.
He spent ten months in the hospital and was discharged in June.
He has since celebrated his first birthday and prepared for Christmas at home.
The case has prompted discussion on personalized therapies for rare diseases.