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Axsome Therapeutics, Inc. (NASDAQ:AXSM)
Q2 2019 Earnings Call
Aug. 8, 2019, 8:00 a.m. ET

Contents:

  • Prepared Remarks
  • Questions and Answers
  • Call Participants

Prepared Remarks:

Operator

Good morning, ladies and gentlemen, and welcome to Axsome Therapeutics Second Quarter 2019 Financial Results Conference Call. Currently, all participants are in a listen-only mode. Later, there will be a question and answer session. Instructions will follow at that time. As a reminder, today's conference call is being recorded.

I would now like to turn the conference over to your host Mark Jacobson, Senior Vice President of Operations at Axsome Therapeutics. Please go ahead.

Mark Jacobson -- Senior Vice President of Operations

Thank you, operator. Good morning and thank you all for joining us on today's conference call. Our earnings press release providing a corporate update and details of the company's financial results for the second quarter of 2019 crossed the wire a short time ago and is available on our website at www.axsome.com.

During today's call, we will be making certain forward-looking statements. These statements may include statements regarding among other things the efficacy, safety, and intended utilization of our investigational agents, our clinical and non-clinical plans, our plans to present or report additional data, the anticipated conduct and funding of future clinical trials, regulatory plans, future research and development, and possible intended use of cash and investment.

These forward-looking statements are based on current information, assumptions, and expectations that are subject to change and involve risks and uncertainties that may cause actual results to differ materially from those contained in the forward-looking statements. These and other risks are described in our periodic filings made with the Securities and Exchange Commission including our quarterly and annual reports. You are cautioned not to place undue weight on these forward-looking statements and the company disclaims any obligation to update such statements.

Joining me on the call today are Dr. Herriot Tabuteau, Chief Executive Officer who will begin the call by highlighting our recent achievements and upcoming clinical milestones; Dr. Cedric O'Gorman, Senior Vice President of Clinical Development and Medical Affairs who will continue with the clinical updates, and Nick Pizzie, Chief Financial Officer who will provide a financial update.

I'd now like to hand the call over to Herriot.

Herriot Tabuteau -- Chief Executive Officer

Thank you, Mark. Good morning everyone and thank you all for joining us on the call today. Over the past four months, Axsome achieved significant clinical and regulatory milestones, which have accelerated the clinical development of our potentially first-in-class or best-in-class CNS product candidates. Our investigational medicines are being evaluated in seven ongoing clinical trials across six different indications, and if successfully developed, have the potential to improve the lives of millions of patients living with CNS disorders. I will provide an update on key developments in the quarter, as well as upcoming clinical milestones.

Let us start with AXS-05 Axsome's novel, oral investigational NMDA receptor antagonist with multimodal activity. Following the receipt of breakthrough therapy designation for AXS-05 in major depressive disorder or MDD and a successful breakthrough therapy meeting with the FDA, we have launched two new studies with AXS-05. The GEMINI study, which is a Phase 3, randomized, double-blind, placebo-controlled trial in MDD, which enrolled the first patient in late June and the Phase 3 open-label long-term safety study in MDD and treatment-resistant depression or TRD which enrolled the first patient in July.

To date, the GEMINI study is approximately 30% enrolled. As a reminder, based on the results of the breakthrough therapy meeting, the previously completed ASCEND trial of the AXS-05 in MDD is considered pivotal, and sufficient with positive results from either the GEMINI trial or our STRIDE-1 trial of AXS-05 in TRD to support an NDA filing for AXS-05 in the treatment of MDD. We remain on track to report top-line results from both the STRIDE-1 and GEMINI trials in the second half of 2019, with an NDA filing anticipated in the second half of next year.

AXS-05 is also being evaluated for the treatment of agitation associated with Alzheimer's disease in our ongoing advanced Phase 2/3 trial. The advanced trial is now just under 60% enrolled and top-line data is anticipated in the first half of 2020.

Turning to AXS-07, our novel, oral, investigational medicine with distinct dual mechanisms of action under development for the acute treatment of migraine. The MOMENTUM Phase 3 trial of AXS-07 in this indication continues to enroll ahead of expectations. To date, more than 70% of the target number of patients have been randomized, and we remain on track to report top-line results in the second half of 2019.

In the second quarter, we held an end of Phase 2 meeting with the FDA related to AXS-07. Based on the results of this meeting, the ongoing MOMENTUM trial if positive will be the only efficacy trial required to support an NDA filing for AXS-07 for the acute treatment of migraine.

MOMENTUM is being conducted pursuant to an FDA special protocol assessment. The study is enrolling only patients with a history of inadequate response to prior acute treatments and uses both a placebo as well as a potent, well established active comparator.

This study, therefore, sets a high bar, and if successful, will demonstrate the unique profile of AXS-07 in this difficult to treat patient population. We recently initiated a Phase 3 open-label, long-term safety extension study of AXS-07 to build the safety database required for potential NDA filing, which we anticipate in the second half of next year.

Our third clinical-stage product candidate is AXS-12, our novel, oral, potent, and highly selective norepinephrine reuptake inhibitor being developed for the treatment of narcolepsy. It is being evaluated for the treatment of the symptoms of narcolepsy in Phase 2 randomized, placebo-controlled CONCERT trial. To date, enrollment in this trial is approximately 50% of target and we remain on track to report top-line results in the second half of this year.

So, the next several months are expected to be highly active and have the potential to be transformative for Axsome, with top-line data expected from the following trials before year-end. Our Phase 3 STRIDE-1 trial of AXS-05 in TRD, our Phase 3 GEMINI trial of AXS-05 in MDD, our Phase 3 MOMENTUM trial of ASX-07 in the acute treatment of migraine, and our Phase 2 CONCERT trial of AXS-12 in the treatment of narcolepsy.

In addition, recent financing activities have enabled us to fully fund all seven of the disclosed clinical trials, and further extend our cash runway into the fourth quarter of 2021, which is well beyond top-line data readouts for all ongoing efficacy trials. Favorable outcomes from these clinical trials would position us to file potentially two NDAs in 2020.

I would now like to hand the call over to Cedric to provide some additional details on the recently launched GEMINI trial.

Cedric O'Gorman -- Senior Vice President, Clinical Development and Medical Affairs

Thank you, Herriot. In late June, we enrolled the first patient in the GEMINI or Glutamatergic and Monoaminergic Modulation in depression study. GEMINI is a Phase 3 randomized, double-blind, multi-center, placebo-controlled trial of AXS-05 in patients with MDD. Approximately 300 patients with a confirmed diagnosis of moderate-to-severe MDD will be randomized to treatment with either ASX-05 or placebo for six weeks. The primary efficacy endpoint is the change in the MADRS total score from baseline. Other assessments include safety parameters, other clinician-rated scales, as well as patient-reported outcome measures.

The GEMINI study largely replicates the design of our positive ASCEND trial with two major differences being the use of a placebo control in GEMINI versus inactive control in ASCEND and the larger size of GEMINI. We look forward to the readout for this trial in the second half of this year.

With that, I would now like to turn the call over to Nick for a financial update.

Nick Pizzie -- Chief Financial Officer

Thank you, Cedric, and good morning everyone. I will focus on key highlights in the quarter and provide some financial guidance. We ended the second quarter with $53.8 million in cash, up from $42.6 million of cash at the end of the first quarter. This increase reflects an equity raise of approximately $20 million conducted in May via our ATM facility.

G&A expenses were flat year over year at $2.4 million. R&D expenses in the second quarter were $11 million which was higher than trend reflecting the significantly faster than expected enrollment of our Phase 3 MOMENTUM trial of AXS-07 in migraines and upfront costs associated with the initiation of three new clinical trials, the Phase 3 GEMINI study of AXS-05 in MDD, the Phase 3 open-label safety study of AXS-05, and the Phase 3 open-label safety study of AXS-07.

R&D expenses are expected to decrease in subsequent quarters as multiple trials conclude later this year. We believe that our current cash position fully funds all disclosed clinical trials and will be sufficient to fund our anticipated operations based on our current operating plan into the fourth quarter of 2021.

We currently do not anticipate any new equity financings prior to the readout from our Phase 3 efficacy trials. That concludes our second quarter 2019 financial review. I will now turn the call back to Mark to lead the Q&A discussion.

Mark Jacobson -- Senior Vice President of Operations

Thank you, Nick. Operator, can we please have our first question.

Questions and Answers:

Operator

Certainly. If you'd like to ask a question via phone, please press *1 on your telephone keypad.

Marc Goodman with SVB Leerink. Your line is open.

Marc Goodman -- SVB Leerink -- Managing Director

Yes. Good morning. Two things, one, just on the narcolepsy study. Can you talk about what should we be expecting and remind us of the proof of concept of this molecule in this indication? And then second of all obviously you're moving much faster than you probably thought you were six to eight months ago. Talk about your thoughts on commercial marketing of the products and how you're thinking about the strategy right now. Thanks.

Herriot Tabuteau -- Chief Executive Officer

Thank you, Mark, for those questions. With regards to narcolepsy as a reminder, this is a randomized, double-blind, placebo-controlled crossover study. What we're looking for is to compare AXS-12 to placebo with regards to the key symptoms of narcolepsy. So those would be cataplexy and we will also be looking at excessive daytime sleepiness. So, this will be the first randomized controlled trial of AXS-12 in this indication. So, we're looking forward to those results. Because of the crossover design of the study, we do think that it should increase the ability to detect the signal in this relatively small, but well-designed study.

In terms of the proof of concept thus far, the proof of concept for AXS-12 is narcolepsy. It comes from non-clinical data. So, in the orexin-deficient mice model of narcolepsy AXS-12 robustly was shown to potently reduce narcoleptic episodes. That translated into positive results in a small pilot trial which was open-label. This was a 12-patient study in patients with narcolepsy. That did show a reduction from baseline in cataplexic episodes as well as improvement in excessive daytime sleepiness symptoms.

With regards to our commercial plans, outside of the US, we've always said that we intend to partner our products. So, that is still the plan. But in the US, we fully expect to commercialize our products ourselves. And in order to do that, we want to make sure that we have in place the appropriate commercial leadership and we look forward to updating you on our progress on that front.

Operator

Joon Lee with SunTrust Robinson Humphrey. Your line is open.

Joon Lee -- SunTrust Robinson Humphrey -- Analyst

Hi, thanks for the question and congrats on all the progress. Can you clarify the extension of the STRIDE study? My understanding is that TRD study STRIDE is ongoing in order to collect additional safety database. And on top of that, you studied an open-label study. What is the minimum number of patient-years you need for the NDA submission for safety? And how many patient-years have you collected so far? And based on that, how long do you need to run the STRIDE study beyond your original plan in order to satisfy the NDA requirement? Also, the second question is that, it might come as a silly question based on the results of the ASCEND study, but what is the powering of GEMINI and also the STRIDE? Thank you.

Herriot Tabuteau -- Chief Executive Officer

Okay, thank you for all those questions. It was quite a list, and so please remind us if we don't address them all. So, the first question had to do with the STRIDE 1 extension and how that relates to the open-label safety study, which we launched. We did launch in the quarter actually in July, we enrolled the first patient in a long-term, open-label safety extension study of AXS-05. That study is meant to capture patients who are exiting the STRIDE 1 trial in TRD as well as the GEMINI trial in MDD. And the reason for that is, in order to file an NDA, we do need to have a safety database that incorporates both patients with MDD, as well as patients with TRD.

In terms of the patient years that are needed, the guidance that we've received from the FDA is for the NDA filing we do need to have 300 patients who've been treated for six months with AXS-05 and 100 patients who've been treated for one year. Now prior to the FDA breakthrough therapy meeting, we did not have an open-label safety extension study in place. We very quickly started that study, and that study is ongoing and that will, of course, be a gating factor to us filing an NDA. And that is what is driving our anticipation of filing an NDA in the second half of next year.

In terms of the STRIDE 1 trial, in order to capture patients who have TRD, we did as you know continue enrolling patients in that study, even though we had reached the target number of patients who had been enrolled in that trial. And so, that is the purpose of the extension of enrollment in STRIDE and also the purpose of the launch of the open-label safety extension trial.

With regards to the powering of the GEMINI study. So, what is nice about GEMINI is that it builds on the positive results from the ASCEND trial. That study was positive with roughly 40 patients per treatment arm, and GEMINI has 150 patients targeted per treatment arm. The way that we're thinking about the powering of not only both GEMINI and STRIDE is where we looked at the effect sizes, which we're seeing on average for anti-depressants that have been approved. So, these are antidepressants that have been shown to be active. That effect size is roughly in the range of 0.3 to 0.35, and we have powered both GEMINI as well as STRIDE at the 90% level to that effect size.

Joon Lee -- SunTrust Robinson Humphrey -- Analyst

So, just to clarify on the original question of STRIDE, when can we expect top-line from STRIDE? Is it the limiting factor that you have to actually complete the open-label study before you can disclose or unblind the STRIDE study? Or can you tell us a little bit about what is the gating factor for top-line in the STRIDE study, and when can we expect that data?

Herriot Tabuteau -- Chief Executive Officer

So, we anticipate top-line results from the STRIDE 1 trial before year-end in the second half of the year. And the way that we're thinking about it is since this study is fully enrolled, in other words, since we've reached the target enrollment, and we are actually beyond the target number of enrolled subjects, we're working backward to make sure that we meet the guidance of year-end. And so, Cedric, is there anything else to add to that?

Cedric O'Gorman -- Senior Vice President, Clinical Development and Medical Affairs

No, yes, I agree with that. And just one other consideration our team is taking into account is to ensure that an appropriate number of patients with treatment-resistant depression are included in the long-term depression safety data set.

Joon Lee -- SunTrust Robinson Humphrey -- Analyst

Great. Well thank you so much, and good luck with all of the data readouts. Thank you.

Operator

Ram Selvaraju with HC Wainwright. Your line is open.

Raghuram Selvaraju -- HC Wainwright -- Managing Director

Hi, thanks very much for taking my questions. A very impressive array of clinical trials currently ongoing all simultaneously. Congrats on being able to achieve that from an operational standpoint.

I just wanted to get some additional clarity on your thinking regarding the sequence and timing of the release of data from STRIDE and GEMINI. Do you have a sense, specifically at this juncture of what the delta is likely to be between the release of those two results? And can you comment on the current status of enrollment in GEMINI? Furthermore, do you have a definitive sense of which data release is likely to come first? And if so, can you tell us which one would?

Herriot Tabuteau -- Chief Executive Officer

Thank you, Ram, for the question. With regards to enrollment in GEMINI, the study was launched in late June, and we are currently approximately 30% enrolled in that trial. So, we very much feel that will remain on track to report results for that study by year-end. And with regards to the sequencing of data readouts for STRIDE and GEMINI, a lot will depend on the continued enrollment in GEMINI. So right now, it's hard for us to give greater granularity than that.

Now having said that, there remain five months in the year, and we have a number of clinical trials which we expect to read out by year-end. So, everything will be compressed. And the reality of is that the possibilities are that STRIDE and GEMINI could report sequentially or they could record simultaneously.

Raghuram Selvaraju -- HC Wainwright -- Managing Director

Okay. Can you also comment on the nature of the label that could be obtained for AXS-05 assuming that both STRIDE and GEMINI hit? So, I just wanted to clarify that this would allow you to obtain a label, hypothetically, in both TRD and MDD. And then if you could also talk a little bit about what additional clinical work might be necessary in order to position AXS-05 specifically as maintenance therapy. Thank you.

Herriot Tabuteau -- Chief Executive Officer

So, with regards to the label, to clarify the indication would be for the treatment of major depressive disorder. So, for the treatment of MDD, and that indication would be enabled by the previously reported positive results for the ASCEND trial, and positive results from either the STRIDE 1 trial in TRD or the GEMINI trial in MDD.

One nuance is that if a STRIDE is positive and, in that case, STRIDE would be part of the data package even though the indication would be for MDD. The STRIDE data would be described in the clinical trial section of the package inserts.

With regards to a label specifically for TRD, that would require another study in TRD. But importantly, the guidance that we've received from the FDA with regards to that study is that that study could also be a placebo-controlled trial. So, this would be an easier study to conduct than the current STRIDE 1 trial.

And with regards to additional clinical studies or clinical data, which would be required for a maintenance indication. To be clear, we do not need to conduct these long-term maintenance studies or a long-term maintenance study prior to an NDA filing. And typically, those are not post-marketing commitments, and those involve long-term studies usually with the randomized discontinuation design.

Raghuram Selvaraju -- HC Wainwright -- Managing Director

Okay. And then, just with regard to how you're thinking about the AXS-05 commercialization effort and the nature of the difference between the TRD and MDD indications. Could you maybe comment a little bit on the patient profile in TRD versus MDD and what the treatment landscape looks like currently in each of these patient populations? Because one could imagine that TRD patients are a lot more recalcitrant than MDD patients and therefore if you were eventually to have a label for AXS-05 in TRD, the drug might be more privileged from a competitive standpoint. But I just wanted to make sure that I'm thinking about this in the right way.

Herriot Tabuteau -- Chief Executive Officer

So, we're very much looking forward to the clinical data from both GEMINI as well as STRIDE, since you know that that will form the basis of how we promote AXS-05. But with regards to the treatment landscape, and how these patients are treated, it's important to remember that currently, roughly 70% of patients fail frontline treatment. So, there a lot of patients out there who are not adequately treated currently. And one of the reasons we believe for the large percentage of treatment failures is that most drugs, in fact, it's thought that all currently approved antidepressants for MDD targets the monoaminergic pathway.

From a commercialization perspective, what we're excited about with regards to AXS-05 is its novel mechanism of action, the fact that it hits a DA. Therefore, it would represent a novel mechanism of action for the 70% of patients who currently have an adequate response to frontline treatment, as well as for patients who have treatment-resistant depression, and those were patients who failed to adapt to drugs with that course and duration.

So, there's clearly overlap there in terms of clinical need, and there's a broad clinical need in the entire MDD population including patients with TRD. So, assuming that the STRIDE is positive, that would demonstrate that in TRD where there is an even greater clinical need, and also where the bar is much higher in terms of getting a clinical response, that AXS-05 is effective in that treatment population.

And regardless of what happens with TRD, the current clinical profile of AXS-05 based on the ASCEND trial is one where we see a rapid onset of action and apparently potent response since we did show efficacy versus an active comparator, as well as this novel mechanism of action.

Raghuram Selvaraju -- HC Wainwright -- Managing Director

Great. And just as a clarification regarding the points you just made. Is it sort of the baseline scenario that if AXS-05 is approved with an MDD label that you would expect it to be deployed only in patients who have previously been tried on and failed an SSRI? Or do you think that it could be elevated to the frontline drug of choice because of aspects like the rapid onset of action?

Herriot Tabuteau -- Chief Executive Officer

Assuming that, and I'll turn it over to Cedric to give his thoughts, but assuming that the clinical profile that we've seen thus far in the ASCEND trial is maintained, then there's no reason to not think that AXS-05 could be used upfront. And also assuming that we continue to show clinical success in our other trials, and certainly in the STRIDE 1 trial then you know obviously that would be a very significant development since it would show the ability of the AXA-05 to also treat patients who historically have been very difficult to treat. Hence the name treatment, Resistant. Cedric?

Cedric O'Gorman -- Senior Vice President, Clinical Development and Medical Affairs

Yes. The only thing I would add is that if there's a really compelling reason to use AXS-05 for existing anti-depressants which is the reasons you gave, faster onset of action, and better efficacy as would be suggested from the ASCEND trial, then I think the question becomes is the safety profile comparable or better? And so far, the data would suggest that the AXS-05 is safe and well-tolerated. So, in that context, I think yes, there is no reason that one wouldn't see a compelling argument to use AXS-05 as a first choice of medication if approved in MDD.

Raghuram Selvaraju -- HC Wainwright -- Managing Director

Great. Thank you very much.

Operator

Bert Hazlett with BTIG, your line is open.

Robert Hazlett -- BTIG -- Managing Director

Yes. Thank you for all the significant answers here. Just a quick question, maybe you answered it. Maybe I missed it. In terms of timing of the open-label extension completion, given that that's the rate-limiting step to potentially filing for this program.

Herriot Tabuteau -- Chief Executive Officer

Thank you, Bert, for the question. We launched the open-label safety extension studies recently. And assuming one year of treatment, then that would put us roughly in the second half of next year. Hence the guidance for NDA filing.

Robert Hazlett -- BTIG -- Managing Director

Okay, terrific. A couple of other questions. In terms of GEMINI and the trial design, are you taking any steps to manage the placebo effect in that study? Obviously, you've had material success in the study with the active comparator, but are you doing anything to manage placebo effects? And how many centers is that GEMINI study being conducted in?

Herriot Tabuteau -- Chief Executive Officer

Thank you for those questions. I'll answer the second question, then I'll turn it over to Cedric who will answer the first. With regards to the number of centers, we're currently in approximately 30 centers. Cedric?

Cedric O'Gorman -- Senior Vice President, Clinical Development and Medical Affairs

Yes. Hi, Bert. Placebo response is definitely a concern in the US and the CNS trials have been particularly vulnerable to high placebo response. However, data would suggest that the placebo response is on the rise. What we do know is a placebo response is driven by expectation bias, the expectation that subjects are getting an active drug.

Now in the ASCEND trial, the chance of getting an active agent was 100%. Namely, they could get AXS-05 or bupropion. So that set a higher bar for separation, but we still managed to separate from the active comparator bupropion. Because the GEMINI trial is placebo-controlled, there's a lower chance of getting an active agent than in the ASCEND trials. It was 50% versus 100%. And therefore, this might be seen as an advantage for GEMINI. However, the positive ASCEND trial also preceded the GEMINI trial and could also theoretically heighten expectation bias for GEMINI.

But with all our trials, we do incorporate extensive quality control measures to ensure that the appropriate patients are enrolled and that the trials are well-run. GEMINI has been designed to replicate as closely as possible, the ASCEND trial. And of course, GEMINI is a significantly larger trial. So, while ASCEND enrolled 80 patients, GEMINI will enroll 300, so this would further increase power to detect a difference. And so far, we've been pleased with the design and the conduct of all clinical trials to date.

Robert Hazlett -- BTIG -- Managing Director

Okay. Thank you. Just one more on the financial side. With regard to the ATM, you're committed to not tapping that for at least in the near-term foreseeable future.

Herriot Tabuteau -- Chief Executive Officer

Yes. I'll turn it over to Nick to answer that.

Nick Pizzie -- Chief Financial Officer

Yes. Sure. Thanks for the question, Bert. As you know we did use the ATM facility in May. We used it very opportunistically. But given currently our strong financial position which provides runway well beyond the data readouts of our overall ongoing efficacy trials. As we stated earlier, we currently do not anticipate future equity financings based on our current operating plans prior to the readout from the Phase 3 trials.

Robert Hazlett -- BTIG -- Managing Director

Okay. Terrific. Thank you. Congrats on the progress.

Nick Pizzie -- Chief Financial Officer

Thank you.

Operator

Matt Kaplan with Ladenburg Thalmann. Your line is open.

Matt Kaplan -- Ladenburg Thalmann -- Managing Director

Hi, good morning, and congrats on the progress. I wanted to dig in a little bit to the AXS-07 program in migraine. Can you describe a little bit more in detail in terms of the MOMENTUM Phase 3 design, and I guess what you hope to show with AX-07 there in terms of potentially a differentiated profile versus other migraine treatments that are currently available with that study?

Herriot Tabuteau -- Chief Executive Officer

Good morning, Matt, and thank you for the question. So just as a reminder, you know AXS-07 is enrolling in the MOMENTUM trial, which is a four-arm study. The design of that study is that patients importantly with a historical inadequate response to prior acute treatments would be randomized to treatment with either AXS-07, placebo, rizatriptan, which is a very potent and well-characterized active comparator, which is known to work and which is approved for migraine. And also MoSEIC meloxicam which is one of the components of AXS-07.

As I mentioned, one important design element of this study is that only patients who have failed or with a history of prior inadequate response to acute migraines treatments. This is measured using the mTOQ-4, which is the migraine treatment optimization questionnaire. So only those patients are allowed to be enrolled into the trial. That sets a high bar because this is a population which is known to be difficult to treat. The other reason, why there's a high bar set in the study, is that we are using not just the placebo comparator, but the active comparator, rizatriptan which is known to be one of the fastest acting and most potent triptan.

So, if we are able to show positive results in the MOMENTUM trial, it would highlight and confirm what we believe to be a potentially differentiated profile for AXS-07. That profile as compared to other agents, both agents that are approved as well as agents that are in development, is based on efficacy. So, the point of differentiation with AXS-07 has always been efficacy.

If you look at numerous patient surveys, the most common reasons for patient dissatisfaction all boil down to inadequate efficacy. So, patients report that drugs don't work. Their current migraine treatments either do not work fast enough. They don't work well enough meaning they don't provide sufficient pain relief or consistent pain relief, or that the pain comes back.

And with regards to AXS-07 because of the pharmacokinetics of the MoSEIC meloxicam component of AXS-07, we would expect at least rapid absorption, which could translate into the fast onset of action. It uses a dual mechanism of action. So, that should contribute to greater pain relief and more consistent pain relief. And it incorporates MoSEIC meloxicam, which has a half-life of at least 20 hours, which should help to reduce symptom recurrence. Thank you.

Matt Kaplan -- Ladenburg Thalmann -- Managing Director

Great. Thanks. And then just a follow up on that in terms of the MOMENTUM and potential NDA filing for AXS-07. How are you going to achieve the safety database required for the NDA filing?

Herriot Tabuteau -- Chief Executive Officer

We launched in July a Phase 3 open-label safety extension of AXS-07. So, open-label safety extension study of AXS-07. And the reason for that is to enable an NDA filing. That study is under way, and we are capturing patients who are exiting the MOMENTUM trial in that study.

Matt Kaplan -- Ladenburg Thalmann -- Managing Director

Okay. Very good. And just one more follow up on I guess, Joon's question. So, kind of fully understand the outcome of the breakthrough designation, breakthrough therapy meeting that you had for AXS-05. In terms of what is necessary or the potential path for filing AXS-05 in MDD and the potential paths for filing AXS-05 in TRD? Can you describe those just so we fully understand the different pathways there?

Herriot Tabuteau -- Chief Executive Officer

So, for MDD, the path filing for MDD incorporate using the ASCEND trial, which has been deemed to be pivotal as one of two adequate enrolled controlled trials which are required for an NDA filing. Now the second study, and this is for MDD. The second study could come in the form of a positive readout from either the STRIDE 1 trial or the GEMINI trial. So, there are two pathways there to an NDA filing, for MDD.

And with regards to TRD, assuming that the STRIDE 1 trial is positive, we would need one additional positive trial in TRD. Importantly, that second trial in TRD could use a placebo control.

Matt Kaplan -- Ladenburg Thalmann -- Managing Director

Thanks.

Operator

There are no further questions at this time. I would now like to turn it back over to Axsome CEO, Herriot Tabuteau for closing remarks.

Herriot Tabuteau -- Chief Executive Officer

Well, thank you all again for joining us on the call. The Axsome team is committed to advancing our clinical pipeline, with the goal of developing new medicines for difficult to treat CNS disorders. We look forward to the rest of the year, and to updating you on our continued progress.

Operator

This concludes the Axsome Therapeutics second quarter 2019 financial results conference call. We thank you for your participation. You may now disconnect.

Duration: 41 minutes

Call participants:

Mark Jacobson -- Senior Vice President of Operations

Herriot Tabuteau -- Chief Executive Officer

Cedric O'Gorman -- Senior Vice President, Clinical Development and Medical Affairs

Nick Pizzie -- Chief Financial Officer

Marc Goodman -- SVB Leerink -- Managing Director

Joon Lee -- SunTrust Robinson Humphrey -- Analyst

Raghuram Selvaraju -- HC Wainwright -- Managing Director

Robert Hazlett -- BTIG -- Managing Director

Matt Kaplan -- Ladenburg Thalmann -- Managing Director

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