Related Party - Additional Information (Detail) (USD $)	9 Months Ended		12 Months Ended	65 Months Ended				9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011	Sep. 30, 2012	Sep. 30, 2012 Clinical Trials	Jun. 30, 2012 Clinical Trials	Jun. 30, 2012 Technology Licenses	Sep. 30, 2012 MD Anderson Cancer Center Research and Development Expense	Sep. 30, 2011 MD Anderson Cancer Center Research and Development Expense	Jun. 30, 2012 MD Anderson Cancer Center Research and Development Expense	Sep. 30, 2012 MD Anderson Cancer Center Research and Development Expense Clinical Trials
Related Party Transaction [Line Items]
Cash paid to MD Anderson Cancer Center for expenses								$ 47,582	$ 50,000
Technology impairment charge	345,000		345,000	690,000
Accounts payable - related party	8,582		67,971	8,582						22,588
Accrued expense - related party	39,000		41,000	39,000	39,000						100,000
Accrued license payments - related party	$ 50,000		$ 39,538	$ 50,000		$ 52,700	$ 50,000