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property, changing our business, including changing the composition of our executive team or board of directors, incurring additional indebtedness, engaging in mergers or acquisitions, paying
dividends or making other distributions, making investments and creating other liens on our assets and other financial covenants, in each case subject to customary exceptions. If we default under the
terms of the loan agreement, including failure to satisfy our operating covenants, the lender may accelerate all of our repayment obligations and take control of our pledged assets, potentially
requiring us to renegotiate our agreement on terms less favorable to us or to immediately cease operations. Further, if we are liquidated, the lender's right to repayment would be senior to the rights
of the holders of our common stock. The lender could declare a default upon the occurrence of any event that they interpret as a material adverse change as defined under the loan agreement. Any
declaration by the lender of an event of default could significantly harm our business and prospects and could cause the price of our common stock to decline. If we raise any additional debt
financing, the terms of such additional debt could further restrict our operating and financial flexibility.
Our ability to use net operating loss and tax credit carryforwards and certain built-in losses to reduce future tax payments may be limited by provisions of the Internal
Revenue Code, and may be subject to further limitation as a result of the transactions contemplated by this offering.
Under Section 382 of the Internal Revenue Code of 1986, as amended, if a corporation undergoes an "ownership change" (generally
defined as a greater than 50% change (by value) in its equity ownership over a three year period), the corporation's ability to use its pre-change net operating loss carryforwards and other pre-change
tax attributes to offset its post-change income may be limited. We believe that, as a result of this offering, our preferred stock financings and other transactions, we have experienced, or may upon
completion of this offering experience, an "ownership change." We may also experience ownership changes in the future as a result of subsequent shifts in our stock ownership. As of December 31,
2013, we had federal and state net operating loss carryforwards of approximately $66.4 million and $61.6 million, respectively, and federal research and development credits of
approximately $5.1 million, which could be limited if we experience an "ownership change." Any such limitations would generally be equal to our equity value at the time of the ownership change
multiplied by a risk-free rate of return published monthly by the IRS, which may result in greater tax liabilities than we would incur in the absence of such limitation. Such an increased liability
could adversely affect our business, results of operations, financial condition and cash flow.
Unstable market and economic conditions may have serious adverse consequences on our business, financial condition and stock price.
As has been widely reported, global credit and financial markets have been experiencing extreme disruptions over the past several
years, including severely diminished liquidity and credit availability, declines in consumer confidence, declines in economic growth, increases in unemployment rates and uncertainty about economic
stability. There can be no assurance that further deterioration in credit and financial markets and confidence in economic conditions will not occur. Our general business strategy may be compromised
by economic downturns, a volatile business environment and unpredictable and unstable market conditions. If the current equity and credit markets deteriorate, or do not improve, it may make any
necessary equity or debt financing more difficult to secure, more costly or more dilutive. Failure to secure any necessary financing in a timely manner and on favorable terms could harm our growth
strategy, financial performance and stock price and could require us to delay or abandon plans with respect to our business, including clinical development plans. In addition, there is a risk that one
or more of our current service providers, manufacturers or other third parties with which we conduct business may not survive difficult economic times, which could directly affect our ability to
attain our operating goals on schedule and on budget.