Immunome (IMNM) Risk Analysis

Human clinical trials are expensive and difficult to design and implement, in part because they are subject to rigorous regulatory requirements. For example, we will incur additional expenses related to our ongoing clinical trials and any future clinical trials. Additionally, because many of our product candidates are based on new technologies and discovery approaches, we expect that they will require extensive research and development and have substantial manufacturing and processing costs. In addition, costs to treat study participants and to treat potential side effects that may result from our product candidates may be significant. Accordingly, our clinical trial costs are likely to be high and could have a material and adverse effect on our business, financial condition, results of operations and prospects.

From time to time, we may publish preliminary results from our preclinical studies and clinical trials. Interim results from clinical trials are subject to the risk that one or more of the clinical outcomes may materially change as enrollment continues and more data becomes available. Preliminary or top-line results also remain subject to audit and verification procedures that may result in the final data being materially different from the data we previously published or publish. As a result, preliminary and interim data should be viewed with caution until the final data is available. Furthermore, others, including regulatory agencies, may not accept or agree with our assumptions, estimates, calculations, conclusions or analyses or may interpret or weigh the importance of data differently, which could impact the value of the particular program and the approvability or commercialization of the particular product candidate. In addition, the information we choose to publicly disclose regarding a particular study or clinical trial is typically selected from a more extensive amount of available information. Others may not agree with what we determine to be material or otherwise appropriate information to include in our disclosure, and any information we determine not to disclose may ultimately be deemed significant with respect to future decisions, conclusions, views, activities or otherwise regarding a particular product candidate. Moreover, if preliminary or topline results that we report differ from later, final or actual results, or if others, including regulatory authorities, disagree with the conclusions reached by us or other actions taken by us with respect to any clinical trial, our ability to obtain approval for, and commercialize, the applicable product candidate or any of our other product candidates could be harmed, which could have an adverse impact on our business, financial condition, results of operations and prospects. Additionally, we have in the past and may in the future create synthetic molecules for comparative purposes. For example, we have created a synthetic version of zilovertamab vedotin for use in preclinical efficacy studies. We believe the results of these tests help us understand how the therapeutic index of our programs and product candidates compared to competitors' product candidates. However, we cannot be certain that any synthetic molecule that we create is the same as the molecule we are attempting to recreate, and the results of the tests comparing any such synthetic molecule to any other program or product candidate may be different than the actual results of a head-to-head test of any such other program or product candidate against a competitor molecule. Additional preclinical and clinical testing will be needed to evaluate the therapeutic index of our programs or product candidates, and to understand their therapeutic potential relative to other programs and product candidates in development. Without head-to-head comparative data, we will not be able to make comparative claims to other products in our promotional materials, if our programs and product candidates are approved. It is impossible to predict when or if any of our programs or product candidates will prove effective and safe in humans or will receive regulatory approval. Before obtaining marketing approval from regulatory authorities, we must, as applicable, complete preclinical studies and then conduct extensive clinical trials to demonstrate the safety and efficacy in humans. Clinical testing can take many years to complete, and its outcome is inherently uncertain. The results of preclinical studies and early clinical trials of any of our product candidates may not be predictive of the results of later-stage clinical trials. In addition, product candidates in later stages of clinical trials may fail to show the desired safety and efficacy traits despite having progressed through preclinical studies and initial clinical trials. A number of pharmaceutical companies have suffered significant setbacks in advanced clinical trials due to lack of efficacy or safety profiles, notwithstanding promising results in earlier trials. In addition, other than the Phase 3 RINGSIDE trial, varegacestat's prior development was not conducted by us, and we did not conduct many of the preclinical studies for IM-1021. As a result, our assumptions about the potential of these programs are based in large part on the data generated in preclinical studies and clinical trials conducted by these third parties. Results from preclinical studies and clinical trials can be interpreted in different ways. We may observe materially and adversely different results in any ongoing or future preclinical studies or clinical trials, or later discover errors or other issues with the data generated by these third parties. We do not know whether planned preclinical studies and clinical trials will be completed on schedule or at all, or whether planned clinical trials will begin on time, need to be redesigned, enroll participants on time or be completed on schedule, if at all. Our development programs may be delayed or otherwise adversely affected due to a variety of reasons, including: - inability to generate sufficient preclinical, toxicology, or other in vivo or in vitro data to support the initiation of clinical trials;- delays in sufficiently developing, characterizing or controlling a manufacturing process suitable for clinical trials;- delays in developing suitable assays for screening participants for eligibility for trials with respect to certain product candidates;- delays in reaching agreement with the FDA, European Medicines Agency or other regulatory authorities as to the design or implementation of our clinical trials;- 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;- obtaining institutional review board, or IRB, approval at each clinical trial site;- recruiting suitable participants to participate in a clinical trial and having participants complete a clinical trial or return for post-treatment follow-up;- clinical trial sites, CROs or other third parties deviating from trial protocol or dropping out of a trial or other vendors supporting a trial not performing as planned;- failure to perform in accordance with the FDA's good clinical practice, or GCP, requirements, or applicable regulatory guidelines in other countries;- participants who enroll in clinical trials may later drop out due to adverse events, a perception they are not benefiting from participating in the study, fatigue with the clinical study process or personal issues;- any unresolved ethical issues associated with enrolling participants in clinical trials in lieu of prescribing existing treatments that have established safety and efficacy profiles;- addressing participant safety concerns that arise during the course of a trial, including occurrence of adverse events that are viewed to outweigh potential benefits;- external factors such as an epidemic or pandemic which prevent execution of the study(ies) or recruitment of subjects to a trial or trials; or - having inadequate supply or quality of components, materials, diagnostics or other supplies necessary for the conduct of our preclinical studies or clinical trials. Furthermore, we expect to rely on CROs, clinical trial sites, manufacturers and other vendors to ensure the proper and timely conduct of our clinical trials and, while we expect to enter into agreements governing their committed activities, we have limited influence over their actual performance or circumstances that could affect their performance. Clinical trials may be suspended or terminated by us, our partners, the IRBs of the institutions in which such trials are being conducted, the Data Safety Monitoring Board for such trials or by the FDA or other regulatory authorities due to a number of factors, including failure to conduct the clinical trial in accordance with regulatory requirements or our clinical protocols, inspection of the clinical trial operations or trial site by the FDA or other regulatory authorities resulting in the imposition of a clinical hold, unforeseen safety issues or adverse side effects, inability to recruit appropriate subjects or an adequate number of subjects, failure to demonstrate a benefit from using a drug or therapeutic biologic, changes in governmental regulations or administrative actions, lack of adequate funding to continue the clinical trial and other factors, including those that may be beyond our control. If we experience delays in the completion of, or termination of, any clinical trial of any of our programs, the commercial prospects will be harmed, and our ability to generate product revenue, if any, will be delayed. In addition, any delays in completing our clinical trials will increase our costs, slow our product development and approval process and jeopardize our ability to commence product sales and generate revenue. Any of these occurrences may materially and adversely affect our business, financial condition, results of operations and prospects. In addition, many of the factors that cause, or lead to, a delay in the commencement or completion of clinical trials may also ultimately lead to the denial of regulatory approval.

We may not be able to initiate or continue clinical trials for our programs or product candidates if we are unable to locate and enroll a sufficient number of eligible participants to participate in these trials as required by the FDA or other regulatory authorities. The enrollment of participants depends on many factors, including: - the severity of the disease under investigation;- the eligibility criteria defined in the clinical trial protocol and the size of the population required for analysis of the trial's primary endpoints;- the existence of approved therapies, or ones available under Emergency Use Authorizations, for treating similar populations may limit recruitment into the clinical trial;- the willingness or availability of eligible individuals to participate in our clinical trials;- the proximity and availability of clinical trial sites;- the referral practices of physicians;- our ability to recruit clinical trial investigators with the appropriate competencies and experience;- perceptions as to the potential advantages of the candidate being studied in relation to other available therapies, including any new drugs that may be approved for the indications we are investigating;- our ability to obtain and maintain participant consents; and - the risk that those enrolled in clinical trials will drop out of the trials before completion. In addition, our future clinical trials will compete with other clinical trials for product candidates that are in the same therapeutic areas as those being pursued by us, and this competition will reduce the number and types of participants available to us, because some participants who might have opted to enroll in our trials may instead opt to enroll in a trial being conducted by one of our competitors. Since the number of qualified clinical investigators is limited, we expect to conduct some of our clinical trials at the same clinical trial sites that some of our competitors use, which will reduce the number of participants who are available for our clinical trials at such clinical trial sites. Additionally, because we anticipate that some of our oncology clinical trials will be in patients with advanced solid tumors or lymphomas, the patients are typically in the late stages of the disease and may experience disease progression or adverse events independent from our product candidates, making them unevaluable for purposes of the trial and requiring additional enrollment. Delays in 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 our pipeline.

Some of our product candidates are in the early stages of development efforts, and we will need to continue to progress our product candidates through preclinical studies and submit INDs to the FDA or appropriate regulatory documents to applicable foreign authorities prior to initiating their clinical development. We have three early clinical stage assets that are currently or are expected to soon be under evaluation in Phase 1 trials. We have no products on the market that have gained regulatory approval and despite the positive results of the Phase 3 RINGSIDE trial and our NDA submission for varegacestat, the NDA may not be approved by the FDA. Our ability to generate revenue and achieve and sustain profitability depends on our ability to continue to identify programs and nominate product candidates, advance them into preclinical and clinical development and obtain regulatory approvals for and successfully commercializing them, either alone or through a collaboration. Before obtaining regulatory approval for the commercial distribution of any product candidates, we, either alone or with or through a collaborator, must conduct extensive preclinical studies, followed by clinical trials to demonstrate their safety and efficacy in humans. We cannot be certain of the timely completion or outcome of our research and development activities or our planned clinical studies and cannot predict if the FDA or other regulatory authorities will ultimately support the further advancement of our product candidates. Most of our product candidates are in the early stages of development, other than varegacestat, which recently completed the Phase 3 RINGSIDE trial, and IM-1021, IM-1617 and IM-3050, which are Phase 1 clinical assets, and we are subject to the risks of failure inherent in the development of product candidates based on novel approaches, targets and mechanisms of action. Reports of adverse events or safety concerns involving our product candidates could result in the limitation, denial or withdrawal of regulatory approval by the FDA or other regulatory authorities for any or all indications, the need to conduct additional trials, implementation of a REMS or the inclusion of unfavorable information in our product labeling and, in turn, could delay or prevent us from commercializing the applicable product or product candidate. Any failures or setbacks in our ADC platform or with respect to any of our additional proprietary technologies, including adverse effects resulting from the use of this technology in human clinical trials and/or the imposition of clinical holds on our trials of our product candidates, could have a detrimental impact on our current and future pipeline, as well as our ability to enter into and/or maintain collaborations related to our ADC technology, which could negatively affect our business and financial position. Additionally, we may not have the financial resources to continue development of, or to enter into new collaborations for, our product candidates. This may be exacerbated by one or more of the following: - negative or inconclusive results from our preclinical studies or clinical trials or the preclinical studies or clinical trials of others for product candidates similar to ours, leading to a decision or requirement to conduct additional preclinical studies or clinical trials or abandon a program;- product-related side effects, including the occurrence of adverse events, experienced by participants in our clinical trials or by individuals using drugs or therapeutic antibodies similar to ours;- delays in IND submissions or comparable foreign applications, or delays or failure in obtaining the necessary approvals from regulators to commence a clinical trial, or a suspension or termination of a clinical trial once commenced;- inadequate supply or quality of components or materials or other supplies necessary for the conduct of our preclinical studies or clinical trials;- poor effectiveness of our product candidates during preclinical studies or clinical trials;- capital expenditures used to expand our current pipeline;- unfavorable FDA or other regulatory agency inspection and review of a clinical trial or manufacture site; failure of our third-party contractors or investigators to comply with regulatory requirements or otherwise meet their contractual obligations in a timely manner, or at all; or - the FDA or other regulatory agencies interpreting our data differently than we do or requiring us to conduct additional preclinical studies or clinical trials. Further, we and any existing or potential future partners may never receive necessary marketing and commercialization approvals from regulatory authorities. Even if we or a potential future partner obtains regulatory approval, the approval may be delayed, or may be for targets, disease indications or patient populations not as broad as we intended or desired or may require labeling that includes significant use or distribution restrictions or safety warnings. We or a potential future partner may be subject to post-marketing testing requirements to maintain regulatory approval.

As an organization, we have not yet demonstrated an ability to obtain regulatory approvals for marketing, manufacture a commercial-scale product, conduct sales and marketing activities necessary for successful commercialization, or arrange for a third party to do any of the foregoing on our behalf. Prior to obtaining approval to commercialize a product candidate in the United States or elsewhere, we must demonstrate with substantial evidence from well-controlled clinical trials, and to the satisfaction of the FDA or comparable foreign regulatory authorities, that such product candidates are safe and effective for their intended uses. Except for our recently completed Phase 3 RINGSIDE trial for varegacestat, we have not previously completed any clinical trials for any of our current product candidates. We also have limited experience as a company in preparing and submitting marketing applications and, although we recently submitted an NDA for varegacestat, which has been accepted by the FDA and assigned a PDUFA target action date of April 28, 2027, we have not previously submitted a BLA, or foreign regulatory submission comparable to an NDA or BLA for any product candidate. In addition, we have had limited interactions with the FDA or other comparable foreign regulatory authorities and cannot be certain how many additional clinical trials of our product candidates will be required or how such additional trials should be designed. Consequently, we may be unable to successfully and efficiently execute and complete necessary clinical trials in a way that leads to submission of an application for and obtaining regulatory approval of any of our product candidates. Notably, varegacestat's prior development was largely conducted by Ayala. As a result, our assumptions about varegacestat's potential are based in large part on the data generated from clinical trials conducted by Ayala as well as our own completion of the Phase 3 RINGSIDE trial, and we may observe materially and adversely different results in future clinical trials or commercial use. In addition, results from nonclinical studies and clinical trials can be interpreted in different ways. Further, even if we believe the nonclinical or clinical data for our product candidates is promising, compliance or data integrity issues may later arise and even if not, the data may not be sufficient to support approval by the FDA or comparable foreign regulatory authorities. Marketing approval or any other applications that we may submit may be delayed by several years or may require us to expend significantly more resources than we have available. In addition, even if we were to obtain marketing approval, regulatory authorities may approve any of our product candidates for fewer or more limited indications than we request, may impose significant limitations in the form of narrow indications, warnings, or a post-marketing risk management strategy such as a Risk Evaluation and Mitigation Strategy, or REMS, or the equivalent in another jurisdiction. Regulatory authorities may grant approval contingent on the performance of costly post-marketing clinical trials or may approve a product candidate with a label that does not include the labeling claims necessary or desirable for the successful commercialization of that product candidate. Any of the foregoing scenarios could materially harm the commercial prospects for our current and future product candidates.

In the natural course of progressing our product candidates, we may make decisions about prioritization that may prove to be incorrect. In addition, because we have limited financial and other resources, we may be limited in our ability to pursue all potential product candidates of interest, including IM-1021, IM-1617, IM-3050 and varegacestat, even if we would otherwise choose to do so if these limitations did not exist. For these reasons, we may fail to capitalize on viable opportunities. If we do not accurately evaluate the commercial potential or target market for a program or product candidate, we may relinquish valuable rights to it through partnership, licensing or other royalty arrangements in cases in which it would have been more advantageous for us to retain sole development and commercialization rights.

Undesirable side effects caused by any product candidates could cause regulatory authorities to interrupt, delay or halt clinical trials and could result in a more restrictive label or the delay or denial of regulatory approval by the FDA or other regulatory authorities. Results of our clinical trials could reveal a high and unacceptable severity and prevalence of these side effects. In such an event, our trials could be suspended or terminated, and the FDA or other regulatory authorities could order us to cease further development of or deny approval of a product candidate for any or all targeted indications. Such side effects could also affect recruitment or the ability of enrolled participants to complete the trial or result in potential product liability claims. Any of these occurrences may materially and adversely affect our business and financial condition and impair our ability to generate revenues. Further, clinical trials by their nature utilize a sample of the potential population. With a limited number of participants and limited duration of exposure, rare and severe side effects of a product candidate may only be uncovered when a significantly larger number of participants are exposed to the product candidate or when participants are exposed for a longer period of time. If any of our product candidates receive regulatory approval and we or others identify undesirable side effects caused by one of these products, any of the following adverse events could occur, which could result in the loss of significant revenue to us and materially and adversely affect our results of operations and business: - regulatory authorities may withdraw their approval of the product, seize the product or impose additional restrictions on the marketing of the particular product or the manufacturing processes for the product or any component thereof;- we may be required to recall the product, change the way the product is administered, conduct additional preclinical studies or clinical trials or change the labeling of the product;- we may be sued, subject to fines, injunctions or the imposition of civil or criminal penalties; and - regulatory authorities may require the addition of labeling statements, such as a "black box" warning or a contraindication or a limitation on the indications for use or impose restrictions on the distribution in the form of a REMS in connection with approval.