Compugen (CW9) Risk Analysis

Companion or complimentary diagnostics are subject to regulation by the FDA and comparable foreign regulatory authorities and may require separate regulatory authorization prior to commercialization. We may require for our clinical trials or for certain portions of our clinical programs, companion diagnostics and/or biomarkers to correctly identify the right patients for the appropriate indications. We rely on access to patient tumor and blood samples for analysis of protein, DNA, and RNA biomarkers. We may rely on third parties for the tumor and blood samples’ handling, processing, and analysis, discovery, development, and validation of these potential biomarker candidates, biomarkers and/or companion diagnostics, as well as the application for and receipt of any required regulatory authorization. If we, or the third parties we engage for this purpose, are unable to successfully discover, validate and/or develop the required companion diagnostics and/or biomarkers for our clinical programs, or develop with altered specifications, or experience delays in doing so, the development of our clinical candidates may be adversely affected and this can harm our patient selection and our clinical outcome, as well as obtaining marketing authorization for these product candidates.

We currently have no products approved for sale and are investing a significant portion of our efforts and financial resources in the clinical development of COM701 and of COM902. Our prospects are substantially dependent on our ability, or that of any existing and future partners, to manufacture, develop, obtain marketing approval for and successfully commercialize COM701 and COM902. We have reported preliminary signals of antitumor activity in our ongoing Phase 1 trial with COM701 monotherapy and in combination with nivolumab. The triplet combination of COM701, nivolumab and BMS-986207 (anti-TIGIT antibody) was well tolerated with a favorable safety and toxicity profile. We have reported preliminary signals of antitumor activity from our Phase 1 dose escalation monotherapy trial of COM902 with a best response of stable disease. These preliminary clinical results may not predict the final results of the on-going clinical trials or future clinical trials or otherwise be sufficient to attract a partner or support a future drug approval. Many companies in the pharmaceutical, biopharmaceutical and biotechnology industries have suffered significant setbacks or failures in clinical trials after achieving positive results, and we cannot be certain that we will not face similar setbacks or failures. Our pipeline currently consists of four clinical stage programs, which are at early stage of clinical development. Two, COM701 and COM902 are being developed internally (COM701 under clinical collaboration with Bristol Myers Squibb) and the other two are being developed by our collaborators. Our pipeline also consists of additional future product candidates in early research stage and require substantial development and investment. As we advance our clinical programs, we will need to expand our personnel and operational capabilities to support these activities. In part because of our limited infrastructure and limited experience in conducting clinical trials as a company and in regulatory interactions, we cannot be certain that our clinical trials will be completed on time, that our planned clinical trials will be initiated on time, if at all, that our planned development programs and development path forward would be acceptable to the U.S. Food and Drug Administration, or FDA, or other comparable foreign regulatory authorities, or that, even if approval is obtained, such investigational products can be successfully commercialized. The success of COM701 and COM902 is dependent upon several factors, including the following: • successful clinical trial results; • ability to fund clinical trials designed to obtain regulatory approval and to become commercially successful; • success of trials designed to allow for a path for registration/approval by regulatory authorities; • our selected regulatory strategy; • timely initiation, enrollment and completion of clinical trials; • demographics, past therapy and other criteria of patients enrolled, even if they meet the inclusion/exclusion enrollment criteria; • a safety, tolerability and efficacy profile, alone or in combination with other approved or investigational products, that is satisfactory to the FDA or comparable foreign regulatory authorities; • selection of indications; • selection of drug(s) for combinations; • successful identification of biomarkers, including for patient selection; • timely receipt of marketing approvals from applicable regulatory authorities; • the performance of our current and future collaborators, if any; • the extent of any required post-marketing approval commitments to applicable regulatory authorities; • establishment and monitoring of manufacturing arrangements and processes with third-party service providers and clinical manufacturing organizations for manufacturing drug substance and drug product; • establishment and monitoring of arrangements with third-party suppliers of raw materials and service for fill-finish, packaging and labeling; • stability of our drug substance and drug products; • supply of our drugs in sufficient quantities and quality for our clinical trials; • establishment of arrangements with third-party manufacturers and processes monitoring to obtain commercial quality drug product that is appropriately packaged for sale; • adequate ongoing availability of raw materials and drug product for clinical development and any commercial sales; • protection of our rights in our intellectual property portfolio; • successful launch of commercial sales following any marketing approval; • a continued acceptable safety profile following any marketing approval; and • commercial acceptance by patients, the medical community and third-party payors. Many of these factors are beyond our control, including clinical development by us and our competitors, the regulatory submission process, potential threats to our intellectual property rights and the manufacturing, marketing and sales efforts of any current and future third party. If we are unable to develop, receive marketing approval for and successfully commercialize COM701 and/or COM902, on our own or with any collaborator, or experience delays as a result of any of these factors or otherwise, our business could be substantially harmed.

There is a need for new drug targets generating new treatment options for patients who are non-responsive or refractory to current immunotherapies. Our business model includes selectively entering into collaborations for novel targets and related therapeutic product candidates at various stages of research and development under various revenue-sharing arrangements. Entering into collaborations with product candidates and targets at an early stage in the validation or drug discovery process is significantly more challenging than identifying partnerships for later-stage products that would have a more complete data package to support its clinical and business potential. In addition, although we have demonstrated success in validating our predictive computational discovery capabilities with product candidates in human clinical trials, major pharmaceutical companies may be hesitant to enter into early-stage collaborations based on newly discovered targets, more so if discovered by computer, as opposed to drug targets with human clinical trial data, or product candidates with significant published experimental validation. Therefore, we cannot assure that our business model to enter into commercialization arrangements for our early-stage novel targets and product candidates will be successful.

Due to our limited resources and experience and due to the early stage of our discoveries, we prioritize our research programs and focus to programs that, we believe, based on limited and preliminary amount of data, seem to have the highest potential. As a result, we might focus our limited resources on the wrong target or therapeutic candidates or focus our candidates on the wrong therapeutic indication and delay in pursuing or fail to pursue candidates that might be later proven (or never proven) as more successful.

The focus of our discovery and therapeutic development activities is on mAb therapeutics in the field of immuno-oncology for treatment of cancer. As a result, we are not undertaking internal discovery and development activities in other therapeutic areas or for other drug modalities, and presently we only pursue activities in our area of focus. If our current candidates fail, or if we fail to continue to discover and develop therapeutic product candidates of medical interest in this field or if we are unable to discover drug targets for mAb therapeutics, or if other modalities would be more successful in treating cancer patients, our business will likely be materially harmed. With respect to cancer immunotherapies, although there have been positive clinical results reported by others resulting in some products gaining approval by the FDA, there can be no assurance that our therapeutic product candidates or our earlier stage immuno-oncology target candidates in our pipeline, will provide similar clinical advantages or interest, that no long term adverse effects will be seen, or that other classes of targets or other products will not be discovered and developed with comparable or superior attributes or clinical activity. In the event of any of these occurrences, the actual and/or perceived value of a substantial portion of our pipeline would likely be reduced in which case our business may be materially harmed. To date, we have signed three partnership agreements involving our product candidates. There is no assurance that we will be able to enter into additional collaborations or agreements on reasonable terms, if at all. In addition, if we fail to continue to discover and validate drug targets or develop product candidates of industry interest in our field of focus, our business will likely be materially harmed. There are many risks associated with our decision to focus on immuno-oncology that include, among others: • not being able to discover new drug targets in this field; • our full scope of target discovery capabilities may not be adequate; • not having chosen the right therapeutic area; • having chosen a therapeutic area with a very high degree of competition; • having chosen a therapeutic area of great biological complexity and with very high failure rates in product development; • not choosing the appropriate drug modality; • having insufficient knowledge, expertise, personnel or capabilities in our chosen therapeutic area to identify the right unmet medical needs, or drug targets, or to timely, properly and efficiently validate the targets and/or select the appropriate mAb for further development as therapeutic product candidates, or to timely, properly or efficiently further them in development; and • the inherent risk of high program failure rate throughout therapeutic development. In each case, our failure could be due to lack of experience and expertise, delays in our internal research programs or applying the wrong criteria or experimental systems and procedures, or selecting an inappropriate drug modality, or unanticipated scientific, safety, activity or efficacy issues with our selected drug targets or product candidates, with the possible result that none of our product candidates result in licensed or marketable products. If any of these risks should materialize, our business, financial condition and results of operations would be materially harmed.

While we believe that our drug target programs represent a compelling and unique opportunity to generate potentially first-in-class therapeutics in the field of cancer immunotherapy, they require significant investment in the research and validation of the drug target candidate and in the discovery and development of the respective therapeutic product candidate and bear high risk. Our predictive computational discovery capabilities are a source for the development of potential first-in-class therapeutics in the field of cancer immunotherapy, but the inherent lack of sufficient published scientific and clinical data to support the potential of these new drug targets candidates to serve as therapeutic opportunities, increases the risk of failure. Although we have built the target identification, validation and drug discovery infrastructure and capabilities that we believe are required to scientifically validate our new drug targets and to later translate them into therapeutic antibody development programs, we cannot be assured that our investment in such new discoveries will result in validated drug targets that will enable the development of effective cancer immunotherapies, nor that we will realize success in product development or our ability to partner and commercialize such opportunities and generate revenues.

Our experience in the development of therapeutic product candidates is limited. Therefore, we may encounter unforeseen expenses, difficulties, complications, delays and other known or unknown factors in achieving our business objectives. To successfully develop and commercialize therapeutic products, we must either access such expertise via collaborations, consultants or service providers, and/or enhance and improve our internal expertise and capabilities. If we are not able to attract, retain and motivate necessary personnel or third party service providers or collaborators to accomplish our business objectives or fail to have available, at the appropriate times, the required experience and expertise for the further development and commercialization of our therapeutic product candidates, we may be unsuccessful in these activities, or these activities may be significantly delayed and as a result we may be unable to implement our business strategy and our business would be materially harmed

We initiated a Phase 1 clinical trial for COM902, which targets TIGIT, in March 2020. There are additional companies that have a program targeting TIGIT in clinical trials, such as Merck, Roche, Bristol Myers Squibb, BeiGene, and Arcus. We have no control over their clinical trials or development program, and lack of efficacy, adverse events or undesirable side effects experienced by subjects in their clinical trials could affect our development and regulatory path of COM902 or the enthusiasm of clinicians recruiting patients for our clinical trials for COM902 or any other service provider, or harm its potential to be partnered for further development and commercialization and generate revenues for the Company. Furthermore, any negative results that may be reported in clinical trials of other programs targeting TIGIT may make it difficult or impossible to recruit and retain subjects in our clinical trials of COM902. Delays in patient enrollment may result in increased costs or may affect the timing or outcome of the planned clinical trials, which could prevent completion of these trials and adversely affect our ability to advance the development of COM902. Failures in planned subject enrollment or retention may result in increased costs or program delays and could render further development impossible. The same risk will apply to COM701 once any anti-PVRIG antibody enters the clinic.

Obtaining marketing approval from regulatory authorities for the sale of any therapeutic product requires substantial preclinical development and then extensive human clinical trials to demonstrate the safety and efficacy of such product candidates. It is impossible to predict when or if any of our programs or those of our collaborators based on our target discoveries will yield products that will be approved for human testing, or, if such testing is proven sufficiently safe and effective to receive regulatory approval for marketing. Preclinical and clinical testing is expensive, time consuming, and subject to uncertainty and will require significant additional financial and management resources. As a company, we have limited experience in conducting clinical trials and have never progressed a product candidate through to regulatory approval. In part because of this lack of experience, our clinical trials may require more time and incur greater costs than we anticipate. We cannot guarantee that any of our therapeutic drug candidates from our pipeline will be advanced into clinical trials or that our clinical trials will be conducted as planned or completed on schedule, if at all. The outcome of preclinical testing and early clinical trials may not be predictive of the success of later clinical trials, and interim results of a clinical trial do not necessarily predict final results. Moreover, preclinical and clinical data are often susceptible to varying interpretations and analyses, and many companies that have believed their product candidates performed satisfactorily in preclinical studies and clinical trials have nonetheless failed to continue to achieve such successes at later stages of the clinical studies or to obtain marketing approval for such products. We submitted to the FDA an Investigational New Drug application, or IND, for COM701, which was cleared by the FDA in June 2018 and an IND for COM902, which was cleared by the FDA in October 2019. However, there can be no assurance that we will submit additional INDs, nor if submitted, the actual timing for such submission (including amendments), nor that such submissions will be accepted by the FDA allowing clinical trials to begin or continue. There can be no assurance that clinical trials will begin at any predicted date or will be completed on schedule, if at all. Moreover, even if these clinical trials begin, issues may arise that could result in the suspension of or termination of such clinical trials. A failure of one or more clinical trials can occur at any stage of testing. Events that may prevent successful or timely completion of clinical development include: • inability to generate sufficient preclinical, toxicology, or other scientific data to support the initiation of clinical trials; • lack of authorization from regulators or institutional review boards, or IRBs, or ethics committees to allow us or our investigators to commence a clinical trial or conduct a clinical trial at a prospective trial site or continue such clinical trial; • delays in sufficiently developing, characterizing, or controlling a manufacturing process suitable for clinical trials; • inability to generate sufficient quantities or quality of our drug substance or drug product to support the initiation or continuation of clinical trials; • delays in reaching a consensus with collaborators or regulatory agencies on trial design; • delays in reaching agreement on acceptable terms with prospective CROs, and clinical trial sites, the terms of which can be subject to extensive negotiation and may vary significantly among different CROs and clinical trial sites; • imposition of a temporary or permanent clinical hold by the FDA, or a similar delay imposed by foreign regulatory agencies for a number of reasons, including after review of an IND, other application or amendment; (i) as a result of a new safety finding that presents unreasonable risk to clinical trial participants; (ii) a negative finding from an inspection of our clinical trial operations or trial sites; (iii) developments on trials conducted by competitors for related technology that raises FDA concerns about risk to patients of the technology broadly; or (iv) if FDA finds that the investigational protocol or plan is clearly deficient to meet its stated objectives; • clinical trials of any product candidates may fail to show safety or efficacy, produce negative or inconclusive results and we may decide, or regulators may require us, to conduct additional preclinical studies or clinical trials or we may decide to abandon product development programs; • difficulty collaborating with patient groups and investigators; • failure by our CROs, other third parties, or us to adhere to clinical trial and related regulatory requirements; • failure to perform in accordance with the FDA’s Good Clinical Practice, or GCP, requirements, or similar applicable regulatory guidelines in other countries; • failure to perform in accordance with the FDA’s Good Manufacturing Practice, or GMP, requirements, or similar applicable regulatory guidelines in other countries; • the number of patients required for clinical trials of any product candidates may be larger than we anticipate, enrollment in these clinical trials may be slower than we anticipate, or participants may drop out of these clinical trials or fail to return for post-treatment follow-up at a higher rate than we anticipate; • delays in having patients complete their participation in a trial or return for post-treatment follow-up; • occurrence of adverse events associated with the product candidate that are viewed to outweigh its potential benefits; • changes in regulatory requirements and guidance that require amending or submitting new clinical protocols; • changes in the standard of care or in the regulatory landscape on which a clinical development plan was based, which may require new or additional trials; • the cost of clinical trials of our product candidates being greater than we anticipate; • clinical trials of our product candidates producing negative or inconclusive results, or early results that will not be repeated in larger or future cohorts, which may result in our deciding, or regulators requiring us, to conduct additional clinical trials or abandon product development programs; • choosing the wrong dosing regimen and/or the wrong drug combination; • delays or failure to secure supply agreements with suitable reagent suppliers, or any failures by suppliers to meet our quantity or quality requirements for necessary reagents; and • delays in manufacturing, testing, releasing, validating, or importing/exporting sufficient stable quantities of our product candidates for use in clinical trials or the inability to do any of the foregoing. Our product development costs will increase if we experience delays in clinical trials (including termination thereof) or in obtaining marketing approvals. We do not know whether any of our preclinical studies or clinical trials will begin as planned, and once begun whether will need to be restructured or will be completed on schedule, or at all. Significant preclinical or clinical trial delays also may allow our competitors to bring products to market before we do, potentially impairing our ability to be first-in-class or successfully commercialize our product candidates and harming our potential market share and business and results of operations. Any delays in our preclinical or clinical development programs may harm our business, financial condition and prospects significantly.

We are conducting Phase 1 and Phase 1/2 clinical trials of COM701 in combinations in patients with advanced solid tumors and clinical trials of COM902 monotherapy and in combination with COM701 in patients with advanced malignancies. Our anticipated time to data in these trials is subject to our ability to enroll a sufficient number of eligible patients that will need to be enrolled for observing clinical activity, if at all. There can be no assurance that we will complete enrollment or have data from the trials when we anticipate or at all. The timely completion of clinical trials in accordance with their protocols depends, among other things, on our ability to enroll a sufficient number of patients that are in line with our inclusions and exclusion criteria and our ability to monitor these patients as required. We may experience difficulties in patient enrollment in our clinical trials for a variety of reasons. Patient enrollment is affected by many factors including the size and nature of the patient population, the eligibility criteria for the trial, the design of the clinical trial, the size of the patient population required for analysis of the trial’s primary endpoints, the proximity of patients to clinical trial sites, our ability to recruit clinical trial investigators with the appropriate competencies and experience, the number of enrolling clinical sites, our ability to obtain and maintain patient consents, the risk that patients enrolled in clinical trials will drop out of the trials before completion or even before any/sufficient imaging assessment, and competing clinical trials (including other clinical trials that we are conducting or will conduct in the future) and clinicians’ and patients’ perceptions as to the potential advantages of the drug being studied in relation to other available therapies, or competing drugs against the same target as well as any new drugs that may be approved for the indications we are investigating. Many pharmaceutical companies are conducting clinical trials in patients with the disease indications that COM701, COM902 and our future potential drug products may target. Additionally, other pharmaceutical companies may clinically investigate their own therapeutic candidates against PVRIG, the target of COM701, or against TIGIT, the target of COM902, which may hamper the enrollment of oncology patients in our trials for COM701 or COM902. For example, in case of COM701, Surface Oncology announced in December 2021 that the FDA has cleared the Investigational New Drug Application (IND) for its PVRIG targeting antibody, GSK4381562 (formerly SRF813), to proceed into a first-in-human clinical trial. In the case of COM902, there is a significant number of anti-TIGIT antibodies that are currently in clinical trials such as tiragolumab by Roche, vibostolimab by Merck, ociperlimab by Beigene, domvanalimab and AB308 by Arcus, BMS-986207 by Bristol Myers Squibb, and others (some of which are in a more advanced clinical stage than COM902). As a result, we must compete with them for clinical sites, clinicians’ interest and the limited number of patients who fulfill the stringent requirements for participation in clinical trials in general. Also, patient enrollment may be limited due to changes in the regulatory landscape in the indications of interest to us. Our clinical trials may be delayed or terminated due to the inability to enroll enough patients. The delay or inability to meet planned patient enrollment may result in increased costs and delay or termination of our trials, which could have a harmful effect on our ability to develop products.

Our method of identifying novel drug targets is based on our predictive computational discovery capabilities and involves first identifying unmet needs in the field of cancer immunotherapy, where we believe our predictive computational discovery capabilities would be relevant or could be modified to be relevant. We focus on the discovery of drug targets that could serve as the basis for the development of possible treatments for patients non-responsive, refractory or relapsing to existing cancer immunotherapies. In this field, we apply our predictive computational target discovery capabilities, or develop new capabilities, to identify novel drug targets for addressing such unmet patient need. While we believe that applying our predictive computational discovery capabilities to identify new drug targets may potentially enable the development of potentially first-in-class therapeutics in the field of cancer immunotherapy, our capabilities are yet not fully proven clinically and our efforts may not result in the discovery and development of therapeutic products, or commercially viable or successful therapeutic products. Although our approach has resulted in the discovery of several new drug targets and their related potential first-in-class therapeutic product candidates in the field of cancer immunotherapy, they are in early stages of research and development or in clinical stage, with COM701 and bapotulimab (formerly known as BAY1905254), having entered the clinic in 2018, COM902 which entered the clinic in March 2020 and AZD2936 which entered the clinic in the fourth quarter of 2021. Our approach may not result in time savings, higher success rates or reduced costs, or clinically meaningful programs and if not, we may not attract collaborators or develop new drugs as quickly or cost effectively or at all and therefore we may not be able to partner and commercialize our products as expected.

From time to time, we publish preliminary data from our ongoing clinical trials. Preliminary data are also subject to the risk that one or more of the clinical outcomes may materially change as time goes by and cutoff date changes, patient enrollment continues and with further patient monitoring where more patient data become available. As a result, preliminary data should be viewed with caution until clinical rial completion where the final data are available. Material adverse changes in the final data could significantly harm our business prospects and eventually harm our financial condition and results of operations.

We rely on know-how and other proprietary computational processes and tools to maintain our competitive computational discovery position. We consider know-how to be our primary intellectual property with respect to our predictive computational discovery capabilities. Know-how can be difficult to protect and enforce. In particular, we anticipate that with respect to our capabilities, this know-how may over time be disseminated within the industry through independent development and the movement of skilled personnel. We cannot rule out that our competitors may have or obtain the knowledge necessary to identify and develop therapeutic products based on novel drug targets that could compete with the drug targets we identify. Our competitors may have significantly greater experience in artificial intelligence, computer sciences, algorithmic tool development and alike to identify targets and greater experience in using translational science to develop product candidates and may also have significantly greater financial, product development, scientific, technical and human resources than we do to discover novel drug targets and develop product candidates. We may not be able to prohibit our competitors from using methods to identify and develop product candidates, including such methods that are the same as or similar to our own. Since our competitors develop products that compete with COM701 or COM902 or any future product candidates we develop, our ability to develop and commercialize these product candidates may diminish substantially, which could have a material adverse effect on our business prospects, financial condition, and results of operations.