Ben Birchall, AP
In this Aug. 11, 2008 file photo, a scientist works during an IVF process.

LONDON — British lawmakers in the House of Commons have voted to approve letting scientists create babies from the DNA of three people.

The move would prevent some children from inheriting potentially fatal diseases from their mothers and would make Britain the first country in the world to allow embryos to be genetically modified.

The vote Tuesday in the House of Commons was 382-128 in favor. The bill must next be approved by the House of Lords before becoming law.

Defects in the mitochondria can result in diseases including muscular dystrophy, heart, kidney and liver failure and severe muscle weakness.