BRUSSELS, April 12 (Reuters) - The EU's executive

Commission approved Illumina's ( ILMN ) plan to unwind its

completed acquisition of cancer diagnostic test maker Grail

, it said in a statement on Friday.

The U.S. gene sequencing company Illumina ( ILMN ) had announced late

last year to divest Grail, after the companies battled both U.S.

and European antitrust enforcers for more than two years and

faced fierce opposition from activist investor Carl Icahn.

(Writing by Nette Nöstlinger, Editing by Charlotte Van

Campenhout)