Thirteen months after Illumina Inc. and Grail Inc. merged, prior to regulatory approval, the deal has taken a turn for the worse. The prognosis looked better following an administrative law judge’s ruling Sept. 1 against the U.S. Federal Trade Commission’s lawsuit seeking to block the transaction, but the European Commission (EC) issued a decision Sept. 6 prohibiting the deal based on the likelihood that a merger would stifle innovation and limit choices in the early cancer detection liquid biopsy market.