Frequency Therapeutics Releases New Data from Two FX-322 Clinical Studies; Plans to Advance Single-Dose Regimen
Interim FX-322 Phase 2a Results Show Four Injection Schedule Had No Discernible Hearing Benefit
Separate FX-322 Phase 1b Study Confirms Hearing Improvement from Single Injection
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FX-322 is Frequency’s lead product candidate, designed to regenerate auditory sensory hair cells in the cochlea and improve hearing in patients with SNHL.
In the four-arm Phase 2a study, 95 subjects aged 18-65 were evaluated for hearing improvement using Word Recognition (WR), Words-In-Noise (WIN), pure tone audiometry and additional exploratory measures. 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.
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, potentially 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.
“Our FX-322 interim Phase 2a clinical results were unexpected, especially given our prior published Phase 1/2 data. We have already gained important learnings from this study that will inform our future development efforts. The results clearly demonstrated that a treatment regimen using four weekly injections is unfavorable and we will continue to move ahead with single-dose administrations in future studies. We believe in the potential of FX-322 given the demonstrated hearing signal and favorable safety profile observed with a single dose and in the future, we may evaluate re-treatment at longer intervals,” said
The Company also announced preliminary results today 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 <0.05). This included a subset of subjects that more than doubled their WR scores. The single dose had a favorable safety profile and was well tolerated. These latest results are supportive of the data reported in the prior single dose Phase 1/2 (FX-322-201) study, recently published in the peer-reviewed journal Otology & Neurotology.
“We now have two independent, single-dose studies showing a hearing signal with FX-322 and with statistically significant improvements in speech intelligibility. More single dose studies are underway to further understand the potential benefit of FX-322 in additional patient populations. Frequency is well resourced, and with the support of our collaborator Astellas Pharma, we will continue to advance development of potential hearing restoration therapeutics for the millions of individuals impacted by sensorineural hearing loss,” added
FX-322 Ongoing Development Activities
Clinical development activities are ongoing to evaluate FX-322’s clinical profile in patients with age-related hearing loss (ARHL) and severe SNHL, to identify additional patient populations that may benefit from this potentially restorative therapeutic approach.
This includes a double-blind, placebo-controlled Phase 1b study (FX-322-112) of subjects with ARHL (ages 66-85), which is fully enrolled with 30 subjects. The primary objectives of the Phase 1b ARHL study are to assess the local and systemic safety of a single dose of FX-322 and evaluate hearing responses in an older adult cohort. Study participants were randomized 4:1 to receive either FX-322 or placebo in one ear. Validated measures of hearing including WR, WIN and pure tone audiometry were used. Safety, otologic and audiologic assessments were conducted at days 30 and 90 following administration of FX-322 or placebo. Frequency expects to share results from this study in Q2 2021.
Frequency is also conducting an FX-322 Phase 1b study of up to 30 subjects ages 18-65 with severe SNHL (FX-322-113). This study, which has a similar study design as the ARHL study, is continuing to enroll subjects and results are anticipated in Q3 2021.
The Company plans to report final results of the Phase 2a study in late Q2 2021.
About Sensorineural Hearing Loss
Sensorineural hearing loss is the most common form of hearing loss, typically resulting from damage to auditory sensory hair cells in the inner ear. These cells convert sound waves to a signal sent to the brain. Sensory hair cells may be lost due to chronic noise exposure, aging, certain viral infections or exposure to drugs that are toxic to the ear. This type of damage impacts hundreds of millions of individuals in the
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This press release contains forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. All statements contained in this press release that do not relate to matters of historical fact should be considered forward-looking statements, including without limitation statements regarding the interpretation and implications of the results of the interim day-90 Phase 2a data and the FX-322-111 data, including advancing FX-322 as a single-dose regimen and re-treatment at longer intervals, the impact of the trial design of the Phase 2a study on clinical data, the timing of results of the Company’s clinical studies, the treatment potential of FX-322, the ability of our technology platform to provide patient benefit, estimates of the size of the hearing loss population and population at risk for hearing loss, the Company’s ability to advance its hearing program and further diversify its portfolio, the Company’s capital resources, the license and collaboration with Astellas Pharma Inc., and the potential application of the PCA platform to other diseases.
These forward-looking statements are based on management’s current expectations. These statements are neither promises nor guarantees, but involve known and unknown risks, uncertainties and other important factors that may cause actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements, including, but not limited to, the following: the impact of COVID-19 on the Company’s ongoing and planned clinical trials, research and development and manufacturing activities, the relocation of the Company’s offices and laboratory facilities, the Company’s business and financial markets; the Company has incurred and will continue to incur significant losses and is not and may never be profitable; the Company’s need for additional funding to complete development and commercialization of any product candidate; the Company’s dependence on the development of FX-322; the unproven approach of the PCA platform; the lengthy, expensive and uncertain process of clinical drug development and regulatory approval; limited experience successfully obtaining marketing approval for and commercializing product candidates; the results of earlier clinical trials not being indicative of the results from later clinical trials; differences between preliminary or interim data and final data; adverse events or undesirable side effects; disruptions at the FDA and other regulatory agencies; failure to identify additional product candidates; new or changed legislation; failure to maintain Fast Track designation for FX-322 and such designation failing to result in faster development or regulatory review or approval; costly and damaging litigation, including related to product liability or intellectual property or brought by stockholders; dependence on Astellas Pharma Inc. for the development and commercialization of FX-322 outside of
These and other important factors discussed under the caption “Risk factors” in the Company’s Form 10-Q filed with the
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