Inhibikase Therapeutics, Inc. (the “Company,” “we” or “our”) is a clinical-stage pharmaceutical company developing therapeutics for Parkinson’s disease, or PD, and related disorders. The Company's multi-therapeutic pipeline has a primary focus on neurodegeneration and its lead program IkT-148009, an Abelson Tyrosine Kinase (c-Abl) inhibitor, targets the treatment of Parkinson's disease inside and outside the brain as well as other diseases that arise from Abelson Tyrosine Kinases. In 2021, we commenced clinical development of IkT-148009, a small molecule Abelson Tyrosine Kinase inhibitor we believe can modify the course of Parkinson’s disease including its manifestation in the gastrointestinal tract, or GI. The U.S. Food and Drug Administration (“FDA”) review of the Phase 1/1b data and the protocol for the Phase 2a three-month dosing study resulted in the FDA agreeing with the Company’s view that it was appropriate for the Phase 2a study to begin, prompting the Company to initiate the Phase 2 study, the 201 trial, at the end of May 2022. We have opened 16 of 34 selected sites as of November 1, 2022, and 11 patients have randomized into the trial of 120 patients planned to be enrolled, with no serious adverse events observed to date. In October 2022, an Investigational New Drug Application ("IND") to expand use of IkT-148009 into the Parkinson’s-related disease Multiple System Atrophy ("MSA") was filed with the FDA. In November 2022, following review of the IND for IkT-148009 as a treatment for MSA, the FDA notified the Company that it was placing the IkT-148009 programs for Parkinson's disease and MSA on clinical hold. The FDA indicated it will provide an official clinical hold letter to Inhibikase within 30 days to explain the basis of this decision.

The Company is also developing platform technologies for alternate ways to deliver protein kinase inhibitors in patients. Our first example of this technology is IkT-001Pro, a prodrug of the anticancer agent imatinib mesylate to treat Stable phase Chronic Myelogenous Leukemia ("SP CML"). Pursuant to its IND which was cleared by the FDA in August 2022, IkT-001Pro will be evaluated in a two-part dose finding/dose equivalence study in up to 56 healthy volunteers. The study is designed to evaluate the steady-state pharmacokinetics of IkT-001Pro and determine the dose of IkT-001Pro equivalent to 400 mg imatinib mesylate, the standard-of-care dose for SP-CML. Following the study, Inhibikase will confer with the FDA and seek agreement on the requirements for the New Drug Application ("NDA") process following the proposed approval path for IkT-001Pro under the 505(b)(2) statute. The Company will simultaneously pursue a superiority study comparing the selected does of IkT-001Pro to standard-of-care 400 mg imatinib mesylate in SP-CML patients using a novel, two-period-wait-list-crossover-switching study.