The American Society of Clinical Oncology (ASCO) has proposed that ethical oversight and review of cancer clinical trials be done by central review boards instead of the institutional review boards (IRB) of individual institutions. The society also announced tough new conflict of interest guidelines that expand disclosure requirements for researchers submitting abstracts and papers to ASCO meetings and publications and severely limit the financial interest leaders of trials can have in companies and products involved in the studies. The ASCO taskforce found that many local IRBs are being overwhelmed by the increasing numbers of trials and the complexity of their design. ASCO hopes to begin with centralised reviews of all trials being done by the US National Cancer Institute's (NCI) cancer cooperative group trials. In addition, people holding leadership roles, including principal investigators, members of the trial's executive committee, members of the data safety monitoring board, in trials will be prohibited from having any substantial financial conflicts of interest including holding or receiving stock in the trial sponsor, royalties or licensing fees related to the product or treatment under investigation, patents for the product or treatment, positions as an officer, board of directors' member, or employee of the trial sponsor.