Science2016globalhigh confidence

In 2016, a baby boy became the first child known to inherit DNA from three parents, with most of his DNA from his mother and father and a third donor providing healthy mitochondrial DNA.

Notes on verification

Confirmed by multiple independent, reputable sources (STAT News, MIT Technology Review, CBS News, New Scientist) with consistent details about the 2016 birth, the mitochondrial donation technique, and the medical rationale (avoiding Leigh syndrome). [tier=silver indep_score=0.883 clusters=3 claim_tier=notable]

Sources