Korro Bio, Inc.NASDAQ: KRRO

Frequency Therapeutics Provides Business Updates and Reports Fourth Quarter and Full Year 2020 Financial Results

· Issued by Korro Bio, Inc. via Business Wire

Recent FX-322 Study Readouts Support Single-Dose Administration as Part of Future Trial Designs; Company Planning Additional Single Injection Studies

Results from Exploratory FX-322 Phase 1b Studies in Patients with Age-Related and Severe Hearing Loss Anticipated in Q2 and Q3 Respectively

Company Ends Year with $220 Million in Unrestricted Cash Providing Runway Into 2023

WOBURN, Mass.--(BUSINESS WIRE)-- Frequency Therapeutics, Inc. (Nasdaq: FREQ), a clinical-stage biotechnology company focused on harnessing the body’s innate biology to repair or reverse damage caused by a broad range of degenerative diseases, today announced business updates and financial results for the fourth quarter and year ended December 31, 2020.

“We recently obtained valuable data from two clinical studies in patients with sensorineural hearing loss that have provided us with important learnings that already are informing our future development plans for FX-322, specifically around trial design and using a single administration approach in our studies,” said David L. Lucchino, Frequency’s President and CEO. “Combined with data from our published Phase 1/2 results, we have now shown statistically significant and clinically meaningful improvements in speech intelligibility from two independent, single injection studies that we believe provide encouraging support for FX-322 as a potential novel treatment option as we drive forward in this new area of regenerative medicine.”

Mr. Lucchino continued: “Upcoming readouts from our ongoing studies will be further clarifying, and we will use these insights as we plan for future placebo-controlled FX-322 clinical studies using a single administration regimen. We have utilized a multi-study development approach that enables us to continually learn more about the clinical profile of FX-322, its potential application in different potential populations, as well as how to carry out trials most effectively in this emerging therapeutic area. In Q2, we anticipate results of a FX-322 Phase 1b study in patients with age-related hearing loss and in Q3 results of a FX-322 Phase 1b study of patients with severe sensorineural hearing loss, which will further inform our path forward. There is a tremendous need to advance the standard of care for people with sensorineural hearing loss, and we are grateful to the patient community and all of those that have participated in our clinical studies for their continued support as we work to advance a medicine for hearing restoration.”

FX-322 Day-90 Study Detail and Ongoing Program

  • FX-322 Phase 2a Study Day 90 Topline Results: The Company recently shared interim data from its four-arm, Phase 2a study of FX-322 conducted in 95 subjects aged 18-65 with mild to moderately severe sensorineural hearing loss (SNHL). In the study, all subjects were administered a total of four weekly intratympanic injections comprised of zero, one, two, or four doses of FX-322 with the balance of injections comprised of placebo doses. Subjects were evaluated for hearing improvement using Word Recognition (WR), Words-In-Noise (WIN), pure tone audiometry and additional exploratory measures. While WR scores increased across all groups, repeated weekly injections appeared to dampen the hearing benefit observed compared to other single-injection studies. The Phase 2a interim results also showed an unexpected apparent level of hearing benefit in the placebo group that did not occur in previous trials and exceeded well-established published standards, suggesting bias due to trial design. Given these challenges observed in the Phase 2a study design, there was no discernible hearing benefit of FX-322 over placebo. No treatment-related serious adverse events were observed in the study.
  • FX-322 - 111 Phase 1b: The Company also shared preliminary data from a recently completed open-label, single-dose study of FX-322 (FX-322-111) designed to evaluate the impact of injection conditions on tolerability. In the multi-center, randomized study, subjects with mild to severe SNHL (n=33) were injected in one ear with FX-322, with the untreated ear as the control. Hearing function was tested over the course of 90 days following dosing. At day 90 following dosing, thirty-four percent (34%) of subjects achieved a ten percent (10%) or greater absolute improvement in WR scores in the treated ear, which was clinically meaningful and statistically significant compared to the untreated ear (p