To date, only one of our products, BL-5010, a legacy asset for the treatment of benign skin lesions, has been approved for marketing and sale. Currently, we have two clinical-stage therapeutic candidates in development: motixafortide (formerly referred to as BL-8040), a novel peptide for the treatment of stem cell mobilization, solid tumors and hematological malignancies, and AGI-134, an immuno-oncology agent in development for solid tumors. Our therapeutic candidates are subject to extensive governmental regulations relating to development, clinical trials, manufacturing and commercialization of drugs and devices. We are preparing to submit a New Drug Application, or NDA, for our lead therapeutic candidate, motixafortide, as a novel stem-cell mobilization agent for autologous bone marrow transplantation in multiple myeloma patients, which we expect to submit in mid-2022.Although we held a positive pre-NDA with the US Food and Drug Administration, or FDA, in which it agreed that our proposed data package is sufficient to support an NDA submission, we may not obtain marketing approval of motixafortide for stem cell mobilization from the FDA or for any other of our therapeutic candidates in a timely manner or at all. In the United States, we are required to submit NDA to obtain FDA approval before marketing motixafortide or any of our therapeutic candidates. An NDA must include extensive preclinical and clinical data and supporting information to establish the therapeutic candidate’s safety, purity and potency, or efficacy, for each desired indication. The NDA must also include significant information regarding the product’s pharmacology, toxicology, chemistry, manufacture and manufacturing controls. Obtaining approval of an NDA is a lengthy, expensive and uncertain process, and approval may not be obtained. Upon submission of an NDA, the FDA must make an initial determination that the application is sufficiently complete to accept the submission for filing. We cannot be certain that any submissions will be accepted for filing and review by the FDA, or ultimately be approved. If our planned application for motixafortide for stem cell mobilization is not accepted for review or approval, the FDA may require that we conduct additional clinical or preclinical trials, or take other actions before it will reconsider our application. If the FDA requires additional studies or data, we would incur increased costs and delays in the marketing approval process, which may require us to expend more resources than we have available. In addition, the FDA may not consider any additional information to be complete or sufficient to support approval. In addition, in connection with the clinical trials for motixafortide and AGI-134 and other therapeutic candidates that we may seek to develop in the future, either on our own or through out-licensing or co-development arrangements, we face the risk that: • a therapeutic candidate or medical device may not prove safe or efficacious; • the results with respect to any therapeutic candidate may not confirm the positive results from earlier preclinical studies or clinical trials; • the results may not meet the level of statistical significance required by the U.S. Food and Drug Administration, or FDA, or other regulatory authorities; and • the results will justify only limited and/or restrictive uses, including the inclusion of warnings and contraindications, which could significantly limit the marketability and profitability of the therapeutic candidate. Any delay in obtaining, or the failure to obtain, required regulatory approvals will materially and adversely affect our ability to generate future revenues from a particular therapeutic candidate. Any regulatory approval to market a product may be subject to limitations on the indicated uses for which we may market the product or may impose restrictive conditions of use, including cautionary information, thereby limiting the size of the market for the product. We and our licensees, as applicable, also are, and will be, subject to numerous foreign regulatory requirements that govern the conduct of clinical trials, manufacturing and marketing authorization, pricing and third-party reimbursement. The foreign regulatory approval process includes all the risks associated with the FDA approval process that we describe above, as well as risks attributable to the satisfaction of foreign requirements. Approval by the FDA does not ensure approval by regulatory authorities outside the United States. Foreign jurisdictions may have different approval processes than those required by the FDA and may impose additional testing requirements for our therapeutic candidates.