Task & Purpose: This Massive Veteran Health Project Just Became The Largest DNA Database In The World. Now Its Future Is Uncertain. “The Million Veteran Program was designated the largest genomic database in the world when it reached 500,000 participants last August. Project leaders plan to use the information to research conditions such as diabetes, cancer, Gulf War illness, heart disease, kidney disease, schizophrenia, bipolar disorder and post-traumatic stress disorder. But the project could face an uncertain future based on President Donald Trump’s proposed 2018 VA budget, veterans with the American Legion said.”