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Operator
Good day and thank you for signing by. Welcome to the Optinose Quarter 1 2021 earnings call. At this time, all participants are in a listen-only mode. After the speaker's presentation, there will be a question and answer session. To ask a question during the session, you will need to press star 1 on your telephone. Please be advised that today's conference is being recorded. If you require any further assistance, please press star 0. I would now like to hand the conference over to your speaker today, Jonathan Nellie. Vice President, Investor Relations, please go ahead.
Jonathan Nellie
Good morning, and thank you for joining us today as we review Optinose's first quarter 2021 performance and our plans for the remainder of the year. I'm joined today by our CEO, Peter Miller, our President and Chief Operating Officer, Rami Mahmoud, our Chief Commercial Officer, Vic Covelli, and our CFO, Keith Goldan. The slides that will be presented on this call can be viewed on our website, optinose.com, in the Investor section. Before we start, I would like to remind you that our discussions during this conference call will include forward-looking statements. All statements that are not historical facts are hereby identified as forward-looking statements. Forward-looking statements are subject to risks and uncertainties that could cause actual results to differ materially from those indicated by such statements. Additional information regarding these factors and forward-looking statements is discussed under Cautionary Note on Forward-Looking Statements section of the earnings release that we issued today, as well as under the Risk Factors section and elsewhere of Optinose's most recent Form 10-K and Form 10-Q that are filed with the SEC and available at their website, sec.gov, and on our website at optinose.com. Your caution not to place undue reliance on forward-looking statements. The forward-looking statements during this conference call speak only as of the original date of this call or any earlier date indicated in such statement, and we undertake no obligation to update or revise any of these statements. We will now make prepared remarks, and then we will move to a question-and-answer session. With that, I will now turn the call over to Peter Miller. Peter.
Peter Miller
Thanks, Jonathan, and good morning, everybody. We appreciate you joining us this morning. Starting on slide three, We'll go into more detail in a moment, but I'd like to highlight four key takeaways from today's presentation. First, our Q1 2021 financial performance was aligned with our company guidance. This is an important year for our company, and getting off to a good start enables continued strong focus on our two core objectives, driving enhanced revenue and completing the chronic sinusitis pivotal trials, which we believe could create significant additional value for the company. Second, New prescriptions of enhanced achieved another all-time high in the first quarter despite continuation of pandemic-related market challenges, with new prescriptions increasing 16% over first quarter 2020. Notably, this growth is against a quarter a year ago, which was not significantly impacted by the pandemic, and in an environment where market new prescriptions decreased 30% versus the prior year. We believe there are multiple opportunities that will continue to support revenue growth in 2021. Market environment is one factor I will discuss now, and we will discuss additional factors on the next slide. The pandemic both reduced the number of diagnostic visits by patients to physician offices and limited the ability of sales representatives to meet in person with physicians. These market conditions have improved somewhat since the death of the pandemic, but are still lagging pre-pandemic norms. Looking forward, as the pandemic environment eases, we expect both our territory manager access to healthcare offices and patient volumes into those offices to improve throughout 2021. We expect these two factors will provide strong support for continued growth and enhanced prescriptions in 2021. In addition, we believe there is opportunity to get more benefit from our partnership with Caleo as the pandemic environment improves access for their representatives as well. Fourth, we expect to complete enrollment in our first Pivotal Clinical Trial Evaluating Exhance for the Treatment of Patients with Chronic Sinusitis in third quarter 2021, with corresponding top-line results in first quarter 2022. This is a change to prior guidance of top-line results by the end of 2021, and is a result of pandemic-related issues, including temporary research site closures and decreased patient flows in locations outside the United States that have continued beyond the first months of this year. We are very enthusiastic about the opportunities for growth that successful chronic sinusitis trials would create. Xhance could be the first drug ever approved and promoted for treatment of the 30 million U.S. patients who suffer from chronic sinusitis. We believe this data could increase product differentiation, create a multifold expansion of the target patient population, be a basis for new partnerships, improve XUS opportunities, and drive significant additional value for the company. Turning to slide four, as I just mentioned, we believe our expectations for growth in 2021 is supported by multiple factors. In addition to, and perhaps more important for long-term prospects and improving market conditions, we believe there is an increasing recognition by thought leaders and specialty societies that enhance plays a distinct and important role in treatment of patients with chronic rhinosinusitis with nasal polyps. We believe a stepped care paradigm is emerging for treatment of this disease, much as we have seen in other disease areas where there are multiple different types of therapeutic options, such as asthma, hypertension, and pain. Importantly, based on activity from relevant specialty societies, such as the American Rhinology Society and American College of Allergy, Asthma, and Immunology, it appears that Xhance is increasingly perceived by experts as offering an option distinct from standard nasal sprays, surgery, or biologics. We believe that a framework customized to individual patient needs, but based on a stepwise logic of escalating patient care as needed from over-the-counter nasal sprays to enhance, to surgery, to enhance again after surgery, and finally to biologics, will support broad adoption of enhance as a standard of appropriate medical management of the disease. This paradigm is supported in multiple ways, that we have already begun to discuss with physicians today, one of which is a published analysis of our pivotal trial data from Dr. Brent Senior, Chief of Rhinology at the University of North Carolina, Chapel Hill and others, reporting the benefits of Xhance for patients who previously tried standard nasal steroid sprays. We think that this kind of expert specialty recognition of the distinct role of Xhance is an important validation of the value of the product, reflecting growing appreciation for its importance and supporting broader adoption by clarifying the role it can play in the treatment armamentarium. Turning to slide six, we had strong performance in first quarter 2021, and I will briefly touch on the year-over-year growth highlights on this slide and the next. In first quarter 2021, there were approximately 25,900 new prescriptions for ExHance, a 16 percent increase compared to first quarter 2020, and the highest number of new quarterly prescriptions for ExHance since launch. As mentioned, this volume growth was achieved against a market that declined 30% over the same period. The total number of ExHance prescriptions in the first quarter of 2021 was approximately 72,600. This represents 30% growth over the first quarter of 2020 in a market environment which declined 23% over the same period. Turning to slide seven. Exhance market share increased from 3.4% in first quarter of 2020 to 5.4% in first quarter of 2021. We're encouraged by this growth, but also excited about the headroom for future growth as more physicians incorporate Exhance as a part of their customary practice. While Exhance is 5% of the intranasal steroid spray prescriptions written by the 18,000 physicians in our target audience, There is a growing segment of believer physicians for whom Xhance exceeds 20% of INS prescriptions written. The share penetration achieved in this group continues to signal the potential for growing a substantial business in the ENT and allergy audience based on the current nasal polyp indication alone. Breath and depth of physician prescribing, as measured by the total number of physicians who have patients filling enhanced prescriptions increased from first quarter 2020 to first quarter 2021 as well. Regarding breadth, in first quarter 2021, approximately 6,920 physicians had a patient fill at least one prescription of enhanced, an increase of 9% compared to first quarter 2020. Regarding depth, the number of physicians who had more than 15 enhanced prescriptions filled by their patients in a quarter has grown even faster with that number increasing by 44% from first quarter 2020 to first quarter 2021, with nearly 1,300 physicians now in this segment. During the last year, increased depth drove more of our growth and increased breadth. As business conditions improve, we believe the opportunity for growth in both depth and breadth will return, and we have focused promotional efforts against this objective. In a few moments, I'll provide some closing remarks but I will first turn the call over to our CFO, Keith Goldan, for comments regarding first quarter 2021 results and perspectives regarding our corporate guidance.
Jonathan
Keith. Thank you, Peter. Pardon me. And thanks, everybody, for joining us this morning. As we reported, Optinose recognized $12 million of total revenue in the first quarter of 2021 consisting of $11 million of enhanced net revenue and $1 million of licensing revenue from a one-time milestone payment we received under our license agreement with Curex Pharmaceuticals. As noted on prior calls, one of the metrics that we track is ex-hance average net revenue per prescription, which is calculated by dividing net revenue for the quarter by the estimated number of ex-hance prescriptions dispensed during the quarter. We continue to believe this is a useful metric to evaluate the net revenues generated per prescription. However, we remind you that this metric is subject to variability that does not necessarily reflect a change in the price that is paid for an individual unit of Exhance. Based on available prescription data purchased from third parties and also on data we received directly from our preferred pharmacy network, Exhance average net revenue per prescription for the first quarter of 2021 was $151. This was favorable to our guidance of $120 to $140 for the first quarter and an increase compared to $126 in the first quarter of last year. Moving to slide 10. Our first quarter 2021 financial performance was in line with our prior expectations, and as a result, our guidance for the full year and the remainder of 2021 is unchanged. First, we expect enhanced net revenue to exceed $80 million for the full year 2021. Second, With respect to enhanced net revenue per prescription, we expect to see substantial improvement over the remaining three quarters of 2021, as well as an increase in full year 2021 compared to the full year 2020 result of $185. As discussed in our last earnings call, we had a pandemic response patient assistance program in 2020 that we do not expect to repeat in 2021, which we expect to contribute to this increase. Finally, for the full year of 2021, we continue to expect total operating expenses to be in the range from $137 million to $142 million, of which approximately $10 million is stock-based compensation. Total operating expenses excluding stock-based compensation are therefore expected to be in the range from $127 million to $132 million. I will now turn the call over to Rami to discuss our development programs.
Peter
Thank you, Keith, and turning to slide 12. Regarding our pivotal CS trials, today we announced that we recently completed an interim analysis to assess the variance in one of the two co-primary endpoints in our first trial, 3205. The analysis was intended to assess whether the variance assumptions in our a priori sample size calculations were consistent with the actual variance observed in the trial. The analysis was performed on blinded interim data on approximately half the number of patients that we project to enroll ultimately in 3205 and to assess the variance in the primary symptom endpoint. The result of this interim analysis was that the observed variance was lower than the variance that was assumed when we estimated sample size and power during the design of the study. As a result, we've determined not to make any alteration in the sample size of that trial on the basis of this interim analysis. In the coming few months, we may elect to conduct a separate interim analysis of the other co-primary endpoint, which is change in average of percentage of pacified volume, which is our CT scan endpoint, which is change from baseline to week 24. The COVID-19 pandemic environment, particularly at European and Canadian trial centers, has continued to influence the rate of enrollment beyond the first months of this year, and that has created difficult-to-predict patient recruitment rates, We've continued to enroll patients throughout this period and were encouraged by recent improvements in enrollment rates at affected centers. However, we now expect to complete enrollments in the first pivotal CS trial in the third quarter, with top-line results, therefore, in the first quarter of 2022. We continue to expect results from the second ongoing trial in the first half of 2022. Moving to slide 13. Regarding OPN019, our product candidate with potential utility for treatment or prevention of COVID-19 and for helping prepare for future pandemics. In March, we announced our plan to conduct a phase one study to evaluate the ability of OPN019 to reduce viral burden in the nose with initial results available within a few weeks of the start of trial enrollment. Regulatory approval to initiate this study is still pending. We continue to expect results, provided we get that approval within the second quarter of 2021. As previously noted, despite the excitement that we and others have for the potential value of OPN019, we are aware of the need to maintain a sharp organizational focus on growing exams and on completing RCS trials. Therefore, we are actively seeking grants partnerships, and or other sources of capital to support further development of this product without detracting from that primary focus. I'd now like to turn the call back over to Peter for closing remarks. Peter?
Peter Miller
Thanks, Rami. Turning to slide 15. Before moving to Q&A, I'll take a moment to reiterate that we are optimistic that 2021 has the potential to bring a substantial improvement in the business environment and that this improvement, buoyed by multiple other factors specific to our business and plans, will continue to support strong future growth for Xhance. We are laser-focused right now on two clear objectives, revenue growth for Xhance and completion of our pivotal trials in chronic sinusitis. I look forward to providing updates on our progress throughout 2021. Thank you, and now I'd like to open the call up for Q&A.
Operator
Thank you, sir. As a reminder, to ask a question, you will need to press star 1 on your telephone. Again, star 1. To answer your question, please press the finder hash key. Our first question comes from the line of David Emselen from Piper Sandler. Your line is open.
Jonathan Nellie
David, we can't hear you if you happen to be on mute.
Operator
Operator, your line is open.
Jonathan Nellie
Let's go to the next question, operator.
Operator
And our next question comes from the line of Gary Nackman from BDMO Capital Markets. Your line is open.
Gary Nackman
Hi, guys. Good morning. I apologize if you covered this just jumping around on different calls. Have you made any changes to the patient assistance program? Is that something you would consider modifying into the allergy season? And maybe just comment, how much of a chance use is allergy versus chronic sinusitis, you know, in polyp versus non-polyp patients? Just give us an update there. And then just one other one. Any modifications to the specialty pharmacy network? Will that continue to grow? And could that potentially put pressure on the net revenue per Rx? I know that's one of the factors that goes into it. Thanks.
Peter Miller
Maybe I'll start. And, Vic, you know, you can add a few comments and then Keith possibly as well. Gary, we did make changes to our patient assistance program at the start of the year. It frankly was less about the allergy season and more about an opportunity we thought we had to improve average net revenue per prescription by, for uncovered patients, moving the first prescription, so commercially eligible but not covered by an insurance plan, by their insurance plan, moving the payment from zero, which it was previously, to $25. And that has two important, and those, by the way, are not profitable prescriptions for us. And the reason we've done that is so that we can go to physicians and say we have a robust program, you know, ensuring that the majority of patients are going to get the product at a very affordable price. We did a lot of work with physicians and found that moving to $25 was acceptable and we've not seen a significant impact on physician prescribing. But it does two things. Number one is we get $25 that we collect on those first scripts. The second is some patients don't fill at the $25. And that's actually a good thing for us because those are not profitable prescriptions. And that change has the possibility that Keith referenced of contributing to improvement in our average net revenue prescription versus prior years. Specific to your question on allergies, so we haven't done anything, Gary, specifically in patient assistance to try to capture allergy volume. I don't know if that was sort of behind your question. But, you know, relative to where our business is, if you will, it's reasonably unchanged from what we've talked about historically, that about a third of the business is with nasal polyp patients, about another third roughly with CS patients without polyps, and then the balance with other conditions where people have chronic inflammation in the nose. Before we go to the specialty pharmacy question, Vic, do you have anything to add?
Vic
No, I think that's a nice summary, Peter. Maybe the only thing I'll say is that the key part of the allergy business is that when it drives patients into the office, that's a key opportunity for chronic sinusitis and ultimately nasal polyps to be diagnosed. So we do see that growth being important.
Peter Miller
Just to amplify that, Gary, I think you know that CS patients get exacerbations that are sort of caused by seasonal allergies, and that's... That obviously creates good patient flow with potential new patients that are appropriate for exams. Relative to the specialty pharmacy network, we feel really good about the network we've built. We have a couple of national providers. We have some regional providers. That contributes to the four prescriptions per patient per year that we've been able to generate. We think it's going to be part of our business for now, Gary, in the specialty segment. we don't think it's necessarily going to put any significant additional pressure on the net revenue per prescription. If anything, as Keith guided, certainly this year we expect improving average net revenue per prescription per year. And as we look out, if anything, we see it reasonably consistent with where we are relative to future trends. If anything, maybe having some favorable tailwind in that area.
Gary Nackman
That's great. Okay. Thanks a lot.
Operator
And our next question comes from the line of Georgie Yordano from Colonial Company. Your line is open.
Georgie Yordano
Hey, guys. Thank you so much for taking my questions. Congratulations on all the progress. So I guess maybe first I was hoping if you could talk about those high prescribing physicians. What differentiates them from the rest of your prescribers? Do they just have high volume practices? Is there anything different about, for example, their specialty? And For those specific above 15 per month, what is the share of X hands scripts out of their total IMS scripts?
Peter Miller
I'll start Georgie and I'll pass it to Vic maybe for a little bit of commentary. Part of the reason I just continue to be very optimistic about this business is because what is happening in that believer segment and We obviously do work to understand why people are writing and why people are not writing more, I should say. In that believer segment, when you ask those doctors, why are you writing, they say two things. Number one is they say, I believe in the product efficacy, that it is materially different than the efficacy certainly of an intranasal spray, and they think it brings significant value for patients, and they've seen it in their own patients. The second thing is they say, I find it easy to write and very affordable for patients. And, you know, in fact, we do have very good market access coverage, you know, commercial coverage approaching 80%. And if anything, we think it has potential to improve from that point over the next, you know, six to 12 months. But the second thing is that they know that it's affordable. And I think we've said this previously, but 80% of the patients nationally receive an enhanced prescription with no out-of-pocket cost. And these physicians know that. So we have good efficacy. We know that. We have good access. We have good affordability. You know, our challenge, not challenge, but our opportunity, it's a great opportunity to grow this business, is get that next group of what we call dabblers to understand that the product really does work exceptionally well in certain patients. And it also is affordable and it's accessible. So, Vic, I don't know if you want to add anything.
Vic
I mean, attitudinally, these early adopters, these believers, are in fact just that, a classic early adopter group, and we see an opportunity to leverage them to begin to influence other peers in the community that frankly just aren't as quick at adopting new technologies.
Peter Miller
I will say, Georgie, too, that they are everywhere. They're not specific to a certain geography. They're not specific to a certain prescribing type. They are in ENT. They're in allergy. Some are even in primary care. And literally, they are all over the United States, which again gives us confidence of the ability to grow the business. The share, by the way, as we said, to get into this group, you have to have greater than a 20% share. You know, some of these doctors, by the way, have very high shares, you know, a good bit higher than 20%.
Georgie Yordano
Got it. No, this is actually incredibly helpful. Thank you. And then I'm not sure if you're willing to comment on this, but given the improved profitability and the recovery and pickup in prescriptions we're seeing, do you believe that the current cash on hand would be sufficient to get you to profitability, to break even? Keith, I'll let you take that.
Jonathan
Jorg, as we stated in the queue, the only guidance that we've given on cash is that the cash on hand is sufficient to get us 12 months out. We ended the year with $144 million, ended the quarter with $116 million, so we feel pretty good about the cash position. One cue has always been traditionally, if you look back over 19 and 20, our highest cash burn quarter. So as we continue to grow Xhance throughout the quarter, we have a very high margin product in the mid-80s in terms of gross profit contribution. So that gross profit contribution will continue to offset the cash burn. So we're excited just to focus, as Peter made in his remarks, on the growth of Xhance this year and the completion of our CS trials. Thank you so much.
Operator
And our next question comes from the line of David Steinberg from Jefferies. Your line is open.
David Steinberg
Hi, guys. It's actually Ed Chung on for Dave. A couple questions here. Let's see, you talked about, you know, potential for your ability to get into physician offices to make office calls. Can you update us on where that is with you and also with Kaleo, who I believe you said was not making as many of those calls and when that timing might come before they can actually get into the office to see the doctors?
Peter Miller
Again, Vic, maybe I'll start and you can chime in with color commentary. Thanks for the question, Ed, and I appreciate you joining us this morning. Obviously, predicting access is going to be hard. So what we're relying on here are surveys that are being done by Acuvia and our own reps in terms of trying to understand what the future environment could look like relative to access. This is an estimate, Ed, but we still are not in a lot of offices currently. So again, what gives us real you know, encouragement about our businesses. We're growing the business really pretty significantly against significant challenges of both patient volume and market, you know, new prescription volume and TRX volume being down substantially and access to offices being challenged. And right now, in many parts of the country, we're unable to access, you know, 40 to 50 percent of doctors in any territory. So our view of why is that going to change There's been some survey work done by Acuvia and it's very encouraging in some ways in our categories that in the fourth quarter a substantial number of physicians did not want to have face-to-face interactions with any sales representatives. That's improved substantially in the latest survey work that was done in March. We're prepared for certain physicians still not allowing access, but I think in 2Q of this year, we expect to see continued improvement. I was with a physician group the other night, and take this as an N of one in one market that is two big groups, by the way, roughly 100 doctors across the two groups not allowing access, said that in June their expectation is to open up access to territory managers. Is there anything to add there before we talk about Caleo?
Vic
Yeah, I would say that the physicians basically are telling us they see the availability of vaccines and the spreading of the vaccines as an opportunity for them to normalize the flow of pharmaceutical companies back into their offices somewhat. We also continue to invest in non-personal promotion solutions so that we find and continue to strengthen our capabilities to reach them in other channels as well. So our confidence there is growing.
Peter Miller
On Kaleo, and Vic, you can jump in here, but Kaleo has actually done a nice job across in the current environment. Probably in the last call, we were talking about 4Q, but Kaleo is out like many of the pharmaceutical companies. Kaleo, by the way, was very typical of the majority of the pharmaceutical companies in terms of getting back out active in face-to-face detailing. And they're now reasonably, I think, in line, Vic, it's fair to say, with the industry. And they're now back out making a substantial number of face-to-face calls. You know, as, you know, through the, you know, ending of the first quarter into the second quarter, we really have not yet seen significant impact yet. But, again, we remain, you know, hopeful as access improves and they're able to get out to more physicians that they can, you know, bring real benefit. And again, back on if you have anything to add.
Vic
Well, we've had great collaboration between their team and our team, and we do see impact from physicians where they are able to make those calls. So we're really confident.
David Steinberg
Thanks for that. And also just on the average selling prices again, obviously if you look at last year, the ASPs were dampened by the – extension of your zero copay with the pandemic going on. So in the rest of this year, should the pattern look perhaps a little more like what we saw in 2019 on a sequential basis?
Peter Miller
We think that's right, Ed.
Jonathan
Sorry, Keith. No, no, I was going to say the same thing. Yeah, we expect, you know, the guidance we have out there, Ed, is that we expect for the full year, to be north of where we ended up last year, the 185. As you noted, that was impacted negatively or adversely by the assist program that we ran, which was a pandemic response program that we put out there for patients to bridge them until they could get surgery. With that program not being repeated this year, we would expect the cadence to be similar to 19, as you said, And, you know, we're optimistic for the average net revenue per script prospects for this year.
David Steinberg
Thanks so much. Appreciate the color.
Operator
And our next question comes from the line of Brandon Fultz from Cantor Fitzgerald. Your line is open.
Brandon Fultz
Hi. Thanks for taking my question. So maybe just on the guidance, can you help us think about between, you know, In achieving that guidance, how much is going to be driven by script growth versus sort of this net price per script? And then staying with net price per script, can you just help us contextualize maybe the inventory that was in the channel at the end of 1-2 versus year end and if it's had any impact on the net price per script during the quarter? And then secondly, maybe just a clarification on the early question. Your cash runway extends 12 months out Does that get you through both file readouts? Thank you.
Jonathan
Keith, I'll let you start. I can chime in. So I can tell you, Brandon, with respect to our average net revenue per script, as I said in my comments, the numerator in that equation is the net revenue for the period, which is driven by our gross sales, which is X factory sales, adjusted for what we expect to realize, the whole gross to net sausage making. So absolutely, if we see a destocking in the channel, which we saw in Q1, which we always expect to see in Q1, that does adversely affect our average net revenue per prescription because you have a lower numerator as the channel equalizes. Just to go back, the reason that we see and would expect to continue to see destocking in the first quarter of every year is because there is a buy-in, both from the wholesalers, the traditional big three, as well as our PPNs, ahead of an expected price increase, which typically comes in the beginning of the year. So we typically, you know, the cadence, and I don't think this is unique to Optinose by any stretch, but we typically see stocking occur in December and and then a destocking occur over the first quarter. And that negatively impacts first quarter results, but on a full year basis, it's 12 months in, 12 months out, because we see the destocking in January or in Q1, stocking in the fourth quarter. So it equalizes on a full year basis. So it definitely adversely impacts the average net revenue per script in that first quarter, and it's one of the one of the factors that leads us to guiding the average net revenue per prescription will be lower in the first quarter than it typically is in the fourth quarter. With respect to growth, I'll start and turn it over to Peter. But the growth that we see this year is primarily driven by unit growth. While we do expect to see growth in the average net revenue per prescription, we certainly, you know, expect to see the period-over-period, year-over-year growth in units, meaning in TRXs for the full year.
Peter Miller
Yeah, I mean, I just would add, you know, things that we've sort of talked about previously, Brandon, is that we think the average net revenue per prescription is going to be more like 19 than it was in 20. So, you know, we were 185 last year. We were closer to 200 in, yeah, we were 185 last year and then about 200 the year prior. So, you know, you can do the math, obviously, of the potential benefit on price. And the balance we do think is prescription growth. And, you know, we feel really good about growth prospects. You know, we had good growth against the first quarter of last year, which was a non-pandemic year. We actually even grew new prescriptions, you know, year over year. You'll recall what happened to us in 2Q and 3Q. We had significant impact on our new prescriptions in 2Q because of no patient volume in physician offices. So when you think about, you know, a year over year impact, for the balance of the year, we're going to be up against a very soft base from a pandemic standpoint. As a reminder, we have new prescriptions, 70%. in 20 versus 19 fully in a pandemic year, majority of a pandemic year against a base that was unaffected by the pandemic. So we feel very good about growth prospects. And that supports our $80 million revenue floor.
Jonathan
And Brandon, with respect to your question around cash, the guidance we put in our queue isn't so much guidance. It's basically compliance with going concern. basis that the auditors need to provide a clean review, which they did this period. So 12 months is the minimum, right? We said the same thing last period. At our March call, when we reported our year-end results, we reported that the company had cash to meet its ongoing obligations commercially with respect to debt and R&D. For at least 12 months, we said the same thing this period. I would rely less on guidance than anything else. We have said that we expect, I believe we said we expect the completion or reporting of data for the second trial in the first half of next year. So hopefully that answers your question.
Operator
And your next question comes from the line of Daniel Busby from RBC Capital Markets. Your line is open.
Daniel Busby
Good morning, everyone. My first question is on the chronic sinusitis trials. It was only a couple months ago that you guided to a top line readout for the first trial by the end of 2021. Now that data is expected in the first quarter of 2022. What's your overall level of confidence that you'll be able to deliver data within the new timelines? And also, was there any particular impetus to conduct the interim analysis? Second, as we look out over the rest of the year, do you expect normal seasonality to come back and play a role at all on demand, for example?
Peter Miller
I'll let you take the first couple.
Peter
Sure. So the primary reason for moving a few weeks out on the expected completion of enrollment has been the impact of the pandemic. And as we noted earlier, it's primarily the impact in European and Canadian sites. There's a number of countries in Europe, which I'm sure you're aware, were particularly impacted during the earlier part of this year in ways that we couldn't really have predicted even just a couple months ago. They either had a prolonged effect or they had delayed vaccine uptake or other factors locally that affected the ability of trial sites to entice patients to come in or even to be permitted to have patients coming in And that was different for different countries, and it turned out that some of the centers in some of the countries where we were particularly expecting and had previously seen excellent enrollment were especially impacted. So that has slowed things down a little bit. But as I noted earlier in my comments, we have continued to enroll throughout this time, and we just have pretty high confidence based on the track record so far and the number of patients that remain to be enrolled that we'll be able to complete in the window that we're currently projecting.
Peter Miller
Interim analysis, Rami.
Peter
Yeah, the interim analysis, I don't know if you recall this, Daniel, but the interim analysis was preplanned. So it's not something that we engaged in because of some new finding or new event that occurred in the trial. So it was a planned analysis to evaluate variants. In part, that's because the assumptions that we had to make for variants were based on limited prior data. So this just reinforces our comfort level that we've made the right assumptions about the sample size that needed to be in the trial. So this shouldn't be interpreted as something that's a reaction to some event occurring during conduct of the trial.
Peter Miller
And Dan, regarding seasonality, I think we said this on the last call, but relative to our ability as it relates to our guidance of $80 million of revenue, from a market environment standpoint, we did expect there to be an impact on the 2Q allergy season, pandemic related. We did not expect normalization, if you will, in 2Q on either patient volume or access to physicians. Um, we do think in the back half of the year that, um, we expect reasonable normalization is what we are currently thinking. And that's obviously somewhat of a crystal ball, but, um, you know, looking at the current trends in the market environment and vaccination rates and all the rest, you know, we think that we'll get back to reasonably a normalized market in the back half of the year.
Daniel Busby
Great. That's helpful, Culler. If I could ask one quick follow-up. Could you just provide your latest thinking around business development? And is that something you'll want to have chronic sinusitis data in hand for before, you know, pursuing in earnest?
Peter Miller
I will say, Dan, we are not going to wait for the data, you know, to begin conversations, you know, with potential partners. We think the potential value of a primary care deployment with a CS indication is substantial. And we've done significant work on primary care physicians and, you know, arguably enhances a wonderful addition to their armamentarium. with a chronic sinusitis patient. Right now, the primary care physician, pretty much after a patient fails an intranasal spray, which is what they put every patient on, and in fact, in chronic sinusitis, 80% of patients do not get relief, who have chronic sinusitis do not get relief from an INS. The only real option those primary care docs have today is to refer to an allergist or an ENT. You know, with this expert consensus that's emerging, the experts in ENT and allergy are recommending, you know, are suggesting that before going to surgery or before going to biologics that EXHANCE be considered in the paradigm. That's something that really fits directly into a primary care physician in terms of what they're doing. So as a result, we have very, you know, we're very excited about the opportunity in primary care for EXHANCE And we think the right way to do it is via partnering. And as a result of that, we're not going to wait for data to have discussions with folks to begin to educate them on the opportunity.
Daniel Busby
Great.
Peter Miller
Thanks, Peter. Thanks, Dan.
Operator
Your next question comes from the line of David Absalom from Piper Sandler. Your line is open.
David Absalom
Hey, thanks. So maybe I'll ask a variation of the business development question slash topic. You know, I guess the question here, well, there's a couple questions. One is, you know, how big of a priority is it for you to add another asset where you can leverage your ENT slash allergist sales presence? So that's number one. And then number two is you do have some general practitioner presence. I know you're talking about partnering around the CS indication, but do you think about also a product where there's an adjacency into primary care? And then lastly, just on, you know, lifecycle management, for example, How should we think about, you know, line extensions to the product? You know, for instance, maybe combining the corticosteroid with an antihistamine like an azelastine, for instance. I mean, is that something that you would contemplate down the road? Just wanted to get your latest thought process there. Thanks.
Peter Miller
Yeah, I'll start, and Rami and Vic and others can jump in. But, you know, relative to prioritization of getting another asset in to leverage our ENT and allergy presence, it's not an immediate priority, David. I mean, right now I think we're crystal clear that our priorities are on growing the enhanced business and also completing our CS trials. So it's not an immediate priority. But, you know, I have said historically, and I still feel this way, that – We have to, at a point in time, get greater leverage than we have as a company. It just doesn't really make sense, even if you have a sizable, enhanced business in the ENT allergy segment, to not find ways to get greater leverage across both the headquarters infrastructure that we've built, but especially the call point infrastructure. Because I'm very proud of our sales team, what they've accomplished, and the relationships that we've developed. So it's not a near-term priority, but it is something that we – absolutely believe certainly in the next 12 months becomes a much higher priority. Relative to your question on primary care, I know you know this, David, but I want to remind you that the real opportunity in primary care is to get access to the 7 million patients being treated by roughly 50,000 primary care providers. And as a reminder, that's more than double the number of patients that are being treated in ENT allergies. The opportunity is very substantial. And in that market, as I described a minute ago, there aren't good choices, and there's really no competition, you know, for these chronic sinusitis patients from a, you know, co-promoting, if you will. So it really is a substantial opportunity, and we think the right way to maximize that is through partnering. Are we in primary care some offices today? Yes, we are. Will we continue to expand in some primary care offices? We will. But we think from an efficiency standpoint, the right thing to do is to find one of the folks that are in primary care, and there still are several, you know, with significant presence. There's great cross-match. We know that already with physicians, with companies that are already in the space relative to patients who have chronic rhinosinusitis. So we think the right way to maximize the business is through partnering. in primary care, although having said that, we will look to expand in some smaller instances, if you will, in some adjacencies. Relative to lifecycle, Rami, maybe I'll let you talk about opportunities within the exhalation delivery system device. You know, our focus there, David, is largely on, you know, looking at things that we can in-license for the most part. But I'll let Rami sort of describe your potential, your thoughts on lifecycle within exhalation delivery.
Peter
Yeah, thanks for the question, David. So you mentioned, David, the last team and other things. Just backing up a little bit, when the time is right, and as Peter said, our focus right now is on growing advanced revenue and on completing the chronic sinusitis trials. But when the time is right, the kind of products that we'll be looking for are products which are meaningfully differentiated and useful to changing standard of care in the physician audience that we're currently calling on. And we're gonna be open-minded about what kind of product that is. So it could conceivably be a product in an exhalation delivery system or other nasal delivery, or it could be a product that has nothing to do with nasal delivery or treatment of diseases of the nose, but which is still relevant to the physician audience we're calling on. But it's going to need to be something which is sort of clinically very meaningful and brings real benefit to patients in the healthcare system.
Peter Miller
Okay, I think that's it in terms of questions, operators, so if there aren't any further questions, we'll conclude the call. I'd like to thank everybody for joining us this morning, and we look forward to continued updates throughout the year.
Operator
Thank you, sir. Ladies and gentlemen, This concludes today's conference call. Thank you all for participating. You may now disconnect.
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