The region's largest nonprofit hospital system, Baptist Health South Florida, announced a high-profile partnership Wednesday with the nationally regarded Memorial Sloan Kettering Cancer Center for the new $400 million Miami Cancer Institute under construction next to Baptist Hospital Miami in Kendall and scheduled to open later this year. The alliance with Memorial Sloan Kettering, whose New York City hospital consistently ranks among the nation's top cancer treatment centers, will give Baptist Health patients access to Sloan Kettering's clinical trials, said Michael Zinner, a physician and chief executive of Miami Cancer Institute, in a written statement.