A consortium including Elliott Investment Management L.P. is in advanced talks to acquire Syneos Health, Inc. (NasdaqGS:SYNH), according to people familiar with the matter. The investor group, which also includes former KKR & Co. Inc. (NYSE:KKR) dealmaker Jim Momtazee's Patient Square Capital, LP and Veritas Capital Fund Management, L.L.C, could announce a deal for the drug-research services company as soon as this week, the people said.