House Bill 11-91 prohibits insurance companies from excluding coverage for related medical costs for patients participating in clinical cancer trials.
Many patients who qualify for the trials cannot access them because their insurance plans do not cover the routine care needed while participating.
The bill was an initiative of the Susan G. Komen Foundation.
Komen Executive Director, Linda Maricle said "today's legislative action is proof that the Race for the Cure has won one footstep at a time."
The new law takes effect January 1st of next year and will cover all forms of cancer.
Governor Quinn also signed legislation to extend the Carolyn Adams Ticket for a Cure game. The Illinois State Lottery Scratch Off Ticket has generated over $9 million, used to provide grants to non-profit organizations supporting breast cancer research and education. The ticket originally was scheduled to be discontinued at the end of 2011.