A couple of introduction pieces:
- 10 min Spotify podcast on the upcoming Alzheimer's trial and science overview. October 2024.
- Stockhead article from September (before the depression trial result which was not a home run). Some good colour on the twists and turns the company has already taken, and the depression and Alzheimer's landscape.
The very basics: Chronic cortisol is toxic to nerve cells. This drug inhibits an enzyme that something something reduces cortisol in the brain.
Why was the depression trial result not a home-run?
The drug has a good safety and side-effect profile so far in hundreds of patients.
They did see clinically and statistically significant improvements in 'depression symptoms'.
But, because the placebo group also improved over the 10 weeks of the trial in the cognition tests, they cannot make any claims about cognitive improvements in depression. In case this is confusing, 'cognitive impairment' is apparently a different aspect of depression than 'depression symptoms' and they are tested independently.
I think they want to circle back for a longer depression trial with a funding partner after the Alzheimer's trial, but they would have immediately been in a better bargaining position had they hit a home-run. They want to prove out the cognition side because that would broaden the market...a lot.
Regardless, they are focused on Alzheimer's now, and if they stick to the schedule, the trial is fully funded as an independent pivotal trial (one of 2 that would be required for FDA approval).
- 220 patients, 9 months, Aust and US sites
- Interim results expected in mid-2025
- Final results mid-2026
' The patients are assessed on both cognition and Alzheimer’s progression.
“We believe we have already validated the target by showing improved cognition in healthy older volunteers and potentially a big clinical benefit in biomarker-positive patients with Alzheimer’s,” Dr Gourlay says. '