in the forefront
In a position of highest importance or priority. The new company I work for is in the forefront of medical innovation. I think some of their new instruments are going to revolutionize the field of medicine. My kids' safety is always a concern in the forefront of my mind.
in the forefront
(of something) Go to at the forefront (of something).
at/in/to the ˈforefront (of something)
in or into an important or a leading position in a particular group or activity: The new product took the company to the forefront of the computer software market.The court case was constantly in the forefront of my mind (= I thought about it all the time).