Baby is healed with first personalized gene-editing treatment

>KJ has made medical history. The baby, now 9 ½ months old, became the first patient of any age to have a custom gene-editing treatment, according to his doctors.

This is _not_ the first human to be treated with a treatment under the wide umbrella of gene therapy based on their own edited genes. There probably is a more narrow first here but the technical details get lost in journalism which is a shame.

Okay, I'll bite: Who then was the first patient of any age to have a custom gene-editing treatment?

Ah yes, the "neutral" tone of AI generated content. "significant controversy and ethical concerns," sure.