Roche Holding AG entered into a definitive agreement to buy Lumiradx Ltd.’s point-of-care technology platform for $350 million. The deal is part of Roche’s effort to transform its point-of-care portfolio and enable more patient-centric health care. For Lumiradx, the sale is the end of a journey to restructure and refocus the company and will result in it being delisted from Nasdaq.