Latham & Watkins and Wachtell, Lipton, Rosen & Katz are advising on the multi-billion dollar tie-up between healthcare giants Siemens Healthineers and Varian Medical Systems.

Siemens Healthineers, which spun off from German parent company Siemens in 2018, is set to acquire U.S. rival Varian for $16.4 billion in what is one of the largest M&A deals of the year to date.