Please ensure Javascript is enabled for purposes of website accessibility

What's Behind Axsome Therapeutics' Miracle Pipeline?

By Zhiyuan Sun – May 19, 2020 at 6:04AM

You’re reading a free article with opinions that may differ from The Motley Fool’s Premium Investing Services. Become a Motley Fool member today to get instant access to our top analyst recommendations, in-depth research, investing resources, and more. Learn More

Just what exactly is going on with this company, which has had success in nearly every single clinical trial it initiated in recent years?

In the biotech industry, companies are able to successfully advance a drug from phase 2 to phase 3 studies and beyond about 50% of the time. But Axsome Therapeutics (AXSM -1.87%) is currently developing four drug candidates targeting seven conditions with significant medical needs -- and nearly all of the company's clinical trials have succeeded in their phase 2 and phase 3 investigational goals. That success rate is wild. Just what exactly could be behind the company's track record of success? 

Axsome's flagship product is AXS-05, a compounded drug made up of an over-the-counter cough medication, dextromethorphan (DM), combined with bupropion, an antidepressant. AXS-05 is being investigated for four different conditions, and it's thought that its components work together synergistically, with bupropion increasing the circulation of DM in the bloodstream while retaining its antidepressant characteristics. As a result, the drug can target multiple receptors in the central nervous system, whereas traditional antidepressants only target one. I recently wrote about about the drug's the potential to become a new first-line therapy for depression, but its potential doesn't stop there.

Woman raising her hands high after getting off wheelchair.

Image source: Getty Images.

A potential miracle drug 

Aside from treating depression, AXS-05 was also able to reduce the effects of agitation in patients with Alzheimer's disease (AD) by up to 48%, and it achieved this metric with statistical significance compared with placebo in a phase 2/3 clinical trial. A company press release noted that "agitation is observed in up to 70% of patients with Alzheimer's disease and is associated with accelerated cognitive decline, earlier nursing home placement, and increased mortality risk."

The drug has also shown promise in treating nicotine addiction; patients who took AXS-05 in phase 2 witnessed a 25% reduction in the number of cigarettes consumed per day compared with placebo, as well as a 50% reduction in their inhaled carbon monoxide levels. Again, the results had a high degree of statistical significance.  

AXS-05 does have its limitations. Recently, the drug failed a late-stage clinical trial evaluating its effects in treatment-resistant depression (TRD). Nonetheless, the rest of the indications it targets are more than enough to cover its flaws. 

And we're not done yet ...

If this wasn't enough, developments in other areas of Axsome's pipeline are also superb. Its formulation of reboxetine (AXS-12), an already approved antidepressant, saw success in treating narcolepsy in phase 2 trials. Narcolepsy is a chronic sleep disorder that causes an overwhelming desire to fall asleep during the day. Patients with the condition may also experience sudden, frequent, and uncontrolled loss of muscle control during the day; this is known as cataplexy. In the study, more than three-quarters of patients who took AXS-12 saw a greater than 50% reduction in the number of cataplexy attacks they experienced weekly, a significant reduction compared with placebo. 

Similarly, AXS-07, a compounded drug consisting of a headache medicine and an arthritis drug, also saw good top-line results in its phase 3 clinical trials in April. Between 32.6% and 43.9% of migraine patients who took AXS-07 were able to achieve freedom from pain two hours from dosing -- again, a significant result compared with placebo. 

Finally, the company was given a license by Pfizer (PFE -0.77%) to develop a central nervous system depressant (AXS-14) for the treatment of fibromyalgia (widespread muscle pain and tenderness). The drug previously achieved success in phase 2/3 clinical trials, but was discontinued by Pfizer because of uncertainty as to whether it would be more effective than drugs that are already on the market. 

Takeaways for investors 

The global market opportunity of all seven indications of Axsome's pipeline candidates combined will amount to more than $60 billion by the middle of the decade. Investors should note that Axsome is doing well on its path to capture market share, as it plans to file New Drug Applications with the U.S. Food and Drug Administration for AXS-05 and AXS-07 in the fourth quarter of this year. Keep in mind, these drugs demonstrated robust efficacy and statistical significance while being well tolerated in their phase 3 clinical trials, so there shouldn't be any uncertainty with regards to their approval. 

While investors wait for commercialization efforts to take hold, Axsome has nearly $200 million in cash on hand, with a run rate of $130 million per year spent on research and development expenses. The company expects it will have enough cash to fund at least two years of operations. This is good news for investors, because by 2022, phase 3 results will likely have been released for AXS-12 regarding narcolepsy and for AXS-05 regarding TRD and agitation for AD. By then, AXS-05 (for regular depression), AXS-07, and AXS-14 would have hit the market, contingent on FDA approval. All in all, I think this is a stock that can make biotech investors rich, and is a must-have in our portfolios. 

Zhiyuan Sun owns shares of Axsome Therapeutics. The Motley Fool has no position in any of the stocks mentioned. The Motley Fool has a disclosure policy.

Invest Smarter with The Motley Fool

Join Over 1 Million Premium Members Receiving…

  • New Stock Picks Each Month
  • Detailed Analysis of Companies
  • Model Portfolios
  • Live Streaming During Market Hours
  • And Much More
Get Started Now

Stocks Mentioned

Axsome Therapeutics Stock Quote
Axsome Therapeutics
$46.08 (-1.87%) $0.88
Pfizer Stock Quote
$44.12 (-0.77%) $0.34

*Average returns of all recommendations since inception. Cost basis and return based on previous market day close.

Related Articles

Motley Fool Returns

Motley Fool Stock Advisor

Market-beating stocks from our award-winning analyst team.

Stock Advisor Returns
S&P 500 Returns

Calculated by average return of all stock recommendations since inception of the Stock Advisor service in February of 2002. Returns as of 10/06/2022.

Discounted offers are only available to new members. Stock Advisor list price is $199 per year.

Premium Investing Services

Invest better with The Motley Fool. Get stock recommendations, portfolio guidance, and more from The Motley Fool's premium services.