The First Child Saved By DNA SequencingSince he was a toddler, six-year-old Nicholas Volker's intestine had been dangerously inflamed, necessitating a hundred surgeries including the removal of his colon. No one knew the cause, but it seemed certain that the boy was dying. In a desperate attempt to figure out what was wrong, doctors at the Medical College of Wisconsin did something desperate and unproven: they sequenced his DNA. The do
