Promising results from phase 2b study of AR-15512 for the treatment of dry eye

Michelle Senchyna, PhD, spoke with Modern Retina at the American Academy of Ophthalmology 2021 annual meeting about the phase 2b study results of AR-15512 for the treatment of dry eye. The triple 8 antagonist stimulates the production of tears and creates a cooling sensation across the ocular surface to treat both signs and symptoms of dry eye. Two concentrations were tested in the trial; both formulations were found to be safe and well-tolerated.

Video transcript

Michelle Senchyna, PhD: Hello everyone, my name is Michelle Senchyna. I am the vice president of both clinical development and Medical Affairs at Aerie Pharmaceuticals and I'm at AAO and pleased to talk to you. We just presented the results from our phase 2b study on our asset AR-15512, which is a TRPM8 agonist. 

TRPM8 is a neat little receptor it causes when stimulated the production of tears as well as a cooling sensation across the ocular surface. And so because of those mechanisms, we think it'd be a fantastic asset to treat the signs and symptoms of dry eye and our relatively large phase 2b study a total of 369 patients that were randomized between two different concentrations. If I went to as well as vehicle, we saw various statistically significant increases in tear production with both concentrations of 512. It was actually the high dose .003% that demonstrated the most robust efficacy, upwards of 20 millimeters of wetting on an anesthetized Schirmer. When we looked at the data a different way based on a responder analysis, were responders, someone that has an increase of at least 10 millimeters of wetting between 82 and 86% of the population in the high dose were responders. It's just a phenomenal response. 

Now, symptom-wise was even more exciting. We saw statistically significant improvements with the high dose of 512, first based on a sandy questionnaire as early as day 14. And then the magnitude of that improvement actually got better at day 28 and 84. Relative to vehicle. We also saw statistically significant improvements in ocular discomfort and eye dryness both the day before.

And then lastly, we showed some really unique data, and that is, signs and symptoms are something that really resonates to the clinician. But at the end of the day, we know quality of life is what matters to patients. And so we saw with again, the high dose of 512, various statistically significant improvements in a number of different measures of quality of life, things like driving or reading or watching TV. And that was just very exciting again as early as day 14.

So these folks are definitely getting better and consistent with the sign and symptom improvement. From a safety perspective. All formulations were safe and well-tolerated. The number of ocular adverse events that we had was normal and 95% of those were reported as mild by the subjects. So in sum, we are just really very excited about the data. We showed multiple sign and symptom improvements quality of life improvements. We have selected the high dose of 512 to go into phase 3 development. We are going to be starting those studies early next year, and I am really looking forward to being able to share more data with you in the near future. So thank you very much.