For the first time, researchers at Boston Children’s Hospital have created a drug for one person. In 2016, a six-year-old patient was diagnosed with Batten’s disease, a neurological problem without cure.

An analysis of the DNA revealed that the cause was the mutation of a gene called Cln7. Once the defect was isolated, the researchers devised a small DNA fragment that could “mask” the defect.

Boston: For the first time created a drug for a single patient, Unravel MaltaOnce tested on animals the drug, which was called “milasen”, was infused into the baby, after the FDA approval for the test, with positive results.