Instil Bio Inc.

• Instil Bio Inc.
• Health-Care

TIL

We are a clinical-stage biopharmaceutical company focused on developing an innovative cell therapy pipeline of autologous tumor infiltrating lymphocyte, or TIL, therapies for the treatment of patients with cancer. We have assembled an accomplished team with a successful track record in the development, manufacture, regulatory approval and commercialization of multiple cell therapies. Using our optimized and scalable manufacturing process, we are advancing our lead TIL product candidate, ITIL-168, for the treatment of advanced melanoma. Based on the clinical results from a compassionate use program with a TIL product that was manufactured using a prior version of the ITIL-168 manufacturing process, we plan to submit an investigational new drug application, or IND, to the U.S. Food and Drug Administration, or the FDA, and, if authorized to proceed, initiate a Phase 2 trial in the second half of 2021, which we believe could support a BLA submission in 2023. We plan to initiate Phase 1 trials of ITIL-168 in additional indications with unmet medical need, including cutaneous squamous cell carcinoma, non-small cell lung cancer, head and neck cancer and cervical cancer, in the first half of 2022. ITIL-168 will be manufactured in our company-operated in-house manufacturing facilities for both our clinical trials and commercial sale, if approved.

We are also developing a novel class of genetically engineered TIL therapies using our Co-Stimulatory Antigen Receptor, or CoStAR, platform. These modified TILs still rely on their native, patient-specific T cell receptors, or TCRs, to bind to tumor neoantigens, but have been enhanced to express novel CoStAR molecules, which bind to shared tumor-associated antigens and provide potent costimulation to T cells within the microenvironment. We believe that the ability of CoStAR to augment the activation of TILs upon native TCR-mediated recognition of tumor neoantigens has the potential to bring TIL therapy to patients with cancer types that have been historically resistant to immunotherapy. We anticipate submitting an IND for our lead CoStAR-TIL product candidate, ITIL-306, in the first half of 2022.

We believe the critical advantage of TIL therapy over other cell therapies relates to the intrinsic and diverse anti-tumor reactivity of TILs. Unlike most cell therapies in development for solid tumors, which only recognize a single target antigen shared across a diverse patient population, TILs are polyclonal and therefore have the ability to recognize the broad set of antigens unique to each patient. This comprehensive polyclonality helps overcome a major limitation of cell therapies, such as CAR-Ts and TCR-Ts, by providing the requisite diversity to match the marked heterogeneity of solid tumors. 
 

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