This excerpt taken from the TPTX DEF 14A filed Jun 19, 2009.
The methods used by the Board of Directors and management in estimating the values of our assets are inexact and may not approximate values actually realized. The Board of Directors assessment assumes that estimates of our liabilities and
operating costs are accurate, but those estimates are subject to numerous uncertainties beyond our control and also do not reflect any contingent or unmature liabilities that may materialize or mature. For all these reasons, actual net proceeds distributed to stockholders in liquidation may be significantly less than the estimated amount discussed in this proxy statement. Moreover, no assurance can be given that any amounts to be received by our stockholders in liquidation will equal or exceed the price or prices at which our common stock has recently traded or may trade in the future.