UPDATE 1-Illumina files registration statement for potential Grail divestiture

Illumina said on Monday it had filed a registration statement with the U.S. securities regulator related to a potential divestiture of Grail, even as it challenges a European Union order to divest the cancer test maker in court. Submission of the registration statement "is an important next step in evaluating divestiture options for GRAIL", Illumina said.