Business Description

—Competition” for additional information regarding our competitors. This competition and competition with approved therapies will reduce the number and types of patients available for clinical trials involving our product candidates, because some patients who might have opted to enroll in our trials may instead opt to pursue a treatment regimen using an approved therapy or enroll in a trial conducted by one of our competitors. Because the number of qualified clinical investigators is limited, we conduct some of our clinical trials at the same clinical trial sites that some of our competitors use, which will reduce the number of patients who are available for our clinical trials at such sites. Moreover, because our current and potential future product candidates may represent a departure from more commonly used methods for cancer treatment, potential patients and their doctors may be inclined to use conventional therapies, such as chemotherapy, rather than enroll patients in our ongoing or any future clinical trials. Delays in patient enrollment may result in increased costs or may affect the timing or outcome of clinical trials, which could prevent completion of these trials and adversely affect our ability to advance the development of our product candidates. 31 We and our collaborators are currently developing, and may in the future develop, our product candidates in combination with other therapies, which exposes us to additional risks. Some of our or our collaborators’ development efforts involve combinations of our product candidates with their own product candidates and therapeutics that have been approved for marketing by the FDA. For example, the development of our RAS(ON) inhibitors includes combinations with existing therapies, including chemotherapy agents, a PD-1/VEGF bispecific antibody, PRMT5 inhibitors, an anti-EGFR agent and a PD-1 inhibitor. In the future our product candidates may be developed in combination with one or more additional approved therapies. Even if any of our product candidates were to receive marketing approval or be commercialized for use in combination with other existing therapies, we would continue to be subject to the risks that the FDA or similar regulatory authorities outside of the United States could revoke approval of the other therapy used in combination with our product candidate, or that safety, efficacy, manufacturing or supply issues could arise with these other therapies. Combination therapies are commonly used for the treatment of cancer, and we would be subject to similar risks if we develop any of our product candidates for use in combination with other drugs or for indications other than cancer. This could result in our own products being removed from the market or being less successful commercially. In addition, developing combination therapies using approved therapeutics, which we are doing and may continue to do for our product candidates, exposes us to additional clinical risks, such as the requirement that we demonstrate the safety and efficacy of each active component of any combination regimen we may develop, including any incremental benefits associated with our product candidates, which may prove challenging. We or our collaborators may also evaluate our current or future product candidates in combination with one or more other cancer therapies that have not yet been approved for marketing by the FDA or similar regulatory authorities outside of the United States or with approved cancer therapies at an unapproved dose and/or schedule, and/or with approved cancer therapies in unapproved indications. For example, the development of our RAS(ON) inhibitors includes combinations with other product candidates in our portfolio, including other RAS(ON) inhibitors. We will not be able to market and sell any of our product candidates in combination with any such cancer therapies, outside existing approved labels that do not ultimately obtain marketing approval. If the FDA or similar regulatory authorities outside of the United States do not approve the other therapies we choose to evaluate in combination with any of our product candidates or revoke their approval of these other therapies, or if safety, efficacy, manufacturing or supply issues arise with these other therapies, we may be unable to obtain approval of or market or our product candidates.…