American Cancer Society: Clinical Research Professor Grants
url   https://www.cancer.org/research/we-fund-cancer-research/apply-research-grant/grant-types/clinical-research-professor-grant.html 
The American Cancer Society offers a limited number of grants to investigators who have had the rank of full professor for 15 years or less and made seminal contributions in the area of cancer control that have changed the direction of clinical, psychosocial, behavioral, health policy, or epidemiologic cancer research. 
Required Letter of Intent due August 1

 American Cancer Society grant opportunities:  https://www.cancer.org/research/we-fund-cancer-research/apply-research-grant.html