Exhibit 99.1
Inhibikase Therapeutics Announces FDA has Lifted the Full Clinical Hold on IkT-148009 in Parkinson’s Disease
- Phase 2a ‘201’ clinical trial will resume immediately at 50 and 100 mg doses-
-Additional safety and pharmacokinetic information will be measured in healthy subjects at the 200 mg
dose prior to implementation in the 201 trial-
BOSTON and ATLANTA, January 25, 2023 — Inhibikase Therapeutics, Inc. (Nasdaq: IKT) (“Inhibikase” or “Company”), a clinical-stage pharmaceutical company developing protein kinase inhibitor therapeutics to modify the course of Parkinson’s disease, Parkinson’s-related disorders and other diseases of the Abelson Tyrosine Kinases, today announced the U.S. Food and Drug Administration (“FDA” or “Agency”) has lifted the full Clinical Hold on IkT-148009 in Parkinson’s disease (PD).
“We are grateful for the expeditious review by the FDA of our response to the Clinical Hold on IkT-148009 in PD,” stated Milton H. Werner, Ph.D., President and Chief Executive Officer of Inhibikase Therapeutics. “We believe that we now have clarity on the FDA’s expectations as we move forward in the 201 clinical trial for IkT-148009. We are now working to re-open clinical trial sites and initiate screening and enrollment of patients for the trial following agreed upon updates to the Protocol and Informed Consent form. We anticipate completing these restart tasks by the end of the first quarter.”
IkT-148009 is a c-Abl tyrosine kinase inhibitor that has been shown to halt disease progression, protect and restore lost neurons and to clear the underlying protein pathology in animal studies that suggests a causal link to the initiation and progression of disease in humans1. In lifting the clinical hold, the Agency based their decision on the Company’s Complete Response and Amendment dated December 21, 2022, as well as further commitments made on January 20, 2023 regarding ophthalmologic monitoring in the protocol of study IkT-148009-201 and various modifications to the Investigator Brochure. The Agency requested that the Company measure the safety and steady-state pharmacokinetic (PK) profile of the 200 mg dose in six (6) healthy subjects prior to administration of the 200 mg dose in Parkinson’s patients. The 201 trial will resume at the 50 mg and 100 mg dose immediately and the safety/PK measurement at 200 mg will be performed simultaneously.
The Agency further requested the measurement of visual acuity and examination of the cornea and lens to complement the analysis of retina, macula and fundus that was already part of the ocular monitoring program in the 201 trial. This monitoring program is consistent with the monitoring program for ocular pathology of other approved protein kinase inhibitors. To date, no ocular pathology has been observed in any trial participant administered IkT-148009.
The Agency further requested removal of safety-related data in the Investigator Brochure for the primary metabolites of IkT-148009 to give the Agency time to review the underlying report in support of this safety data.
With agreement on conditions for restart of the 201 trial and the lifting of the clinical hold on IkT-148009, the Company intends to seek a lifting of the Clinical Hold on its program focused on Multiple System Atrophy (MSA).
| 1 | DOI: 10.1126/scitranslmed.abp9352 |
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