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Cryolife Inc (CRY) Q2 2021 Earnings Call Transcript

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CRY earnings call for the period ending June 30, 2021.

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Cryolife Inc (CRY 1.01%)
Q2 2021 Earnings Call
Jul 29, 2021, 4:30 p.m. ET

Contents:

  • Prepared Remarks
  • Questions and Answers
  • Call Participants

Prepared Remarks:

Operator

Greetings and welcome to the CryoLife Second Quarter 2021 Financial Conference Call. At this time, all participants are in a listen-only mode. A brief question-and-answer session will follow the formal presentation. [Operator Instructions]

I will now turn the call over to Brian Johnston from the Gilmartin Group. Thank you and you may begin.

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Brian Johnston -- Vice President of Investor Relations Gilmartin Group

Thanks, Operator. Good afternoon and thank you for joining the call today. Joining me today from CryoLife's Management team are Pat Mackin, CEO; and Ashley Lee, CFO.

Before we begin, I'd like to make the following statements to comply with the safe harbor requirements of the Private Securities Litigation Reform Act of 1995. Comments made on this call that look forward in time involve risks and uncertainties that are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. The forward-looking statements include statements made as to the company's or management's intentions, hopes, beliefs, expectations, or predictions for the future. These forward-looking statements are subject to a number of risks and uncertainties, estimates and assumptions that may cause actual results to differ materially from these forward-looking statements. Additional information concerning certain risks and uncertainties that may impact these forward-looking statements is contained from time to time in the company's SEC filings and in the press release that was issued earlier today.

Now, I'll turn the call over to CryoLife's CEO, Pat Mackin.

Pat Mackin -- Chief Executive Officer

Thanks, Brian, and good afternoon and thanks for joining. I'm pleased to report we had a solid quarter as our recently acquired and newly introduced products performed quite well even in the face of the pandemic. In evaluating the performance and progress of our business, we believe it is more meaningful to compare Q2 '21 results against Q2 2019 results, because Q2 of 2020 performance was substantially impacted by COVID-19.

So, when comparing Q2 of 2021 against Q2 of 2019 performance, our pro forma constant currency revenue growth was 6.6%. This excludes TMR in both periods as we sold TMR in Q2 of '19 but not Q2 of 2021. This revenue growth shows that our business momentum has returned and we are returning to growth. Our Q2 '21 performance is even more impressive when you consider that cardiac tissue declined 7% in the quarter due to the inadequate supply of cardiac tissue valves that were affected by the previously mentioned Tris issue, which has now been resolved. In the last few weeks, we confirmed with the FDA that the quarantine tissue our safe to distribute, and as a result, we will not write-off any of the $5 million of tissue that was quarantined as a result of the Tris issue. As a result of this positive news, we now have an extra quarter of tissue and we've begun working through our release process, which should have positive impact on tissue revenue going into the second half of 2021.

Given our confidence in our business, notwithstanding the continued impact from COVID-19 on our business, particularly outside of the US, we are issuing guidance for the second half of 2021. We are forecasting second half revenues will increase approximately 7-10% on a pro forma constant currency basis versus 2019. This will exclude PerClot and as a result of the Baxter transaction which will end up with full year revenues in 2021, between $296-$300 million. Our performance through this quarter benefited particularly from our new product launches and strength in our On-X aortic valve business in the US. For example, in the second quarter of 2021, compared to the second quarter of 2019, our AMD has increased 65%, E-vita OPEN NEO grew 115%, E-nside grew 25% and On-X grew 17%, each on a pro forma constant currency basis. Nexus revenues grew 48% versus 2020 on a constant currency basis as it wasn't available in Q2 of 2019.

I also wanted to highlight the outstanding growth of the On-X aortic valve revenue in North America, which is a 25% increase. Since our last call, the number of people with COVID vaccines in EMEA has increased substantially, and the number of hospitals operating in a more traditional workflow also continues to increase. Both of these factors had led to further market normalization and approved our sequential revenue. Unfortunately, we are seeing an increase in outbreaks in various markets around the world due to the highly contagious Delta variant. While we do not foresee a return to conditions like in 2020 or early '21, certain areas of the US, as well as Europe, are starting to experience renewed spike of COVID 19 infections, and Latin America and Asia-Pacific continue to experience significant impact from COVID-19. That said, while COVID may continue to be a headwind in the months to come, we believe that our revenue performance in the second half of this year will be better than the first half of this year. Ashley will provide more commentary on our outlook for Q3 later in the call.

Before moving on to provide a broader recap of our second quarter progress, I want to provide some more color on our announcement this morning regarding the sale of our PerClot product line to Baxter. PerClot is an outstanding product, but as you know, most of the addressable market opportunity for PerClot is outside of our customary call point in cardiac and vascular surgery. From a strategic standpoint, divesting PerClot allows our commercial channels to remain focused on selling our expanding portfolio of cardiac and vascular surgery products focused on aortic repair, and simultaneously it improves our cash position to strengthen our balance sheet. As a result of this transaction, Baxter will take over distributing SMI manufactured PerClot outside the United States and will sell CryoLife manufactured PerClot for approximately two years post US approval of PerClot while Baxter transfers PerClot manufacturing from us to another manufacturer. We will continue to pursue the US PMA approval for PerClot on Baxter's behalf.

Under current assumptions, we expect PerClot to be approved in the US in the second half of 2022 and we will generate revenue in 2023 and 2024 in the product we manufacture for Baxter, which should contribute to our growth rate. As a result, [indecipherable] of this product line is a clear strategic benefit and contribute to our revenue growth in 23 and 24.

Moving on to review of our progress in the second quarter. As explained in our last call, our near-term plan is to accelerate revenue growth with 3 main initiatives. Our first initiative is to commercialize our 5 new aortic stent and stent-graft products in Europe. This includes the AMDS, NEXUS, our 3 next-generation JOTEC products, E-nside, E-vita OPEN NEO, and E-nya. Our second initiative is to continue to expand in Asia-Pacific and Latin America. And our 3rd initiative is to secure regulatory approvals in major markets for PerClot in the US, PROACT Mitral in the US, and BioGlue in China. I will walk you through an update on each of these items going forward. Starting with the review of the commercialization of our enhanced portfolio of new aortic stents and stent grafts. First with AMDS, this is the world's first arch remodeling hybrid device used to treat acute type A aortic dissections, and we're very optimistic about the performance of this device.

As I noted earlier, during the second quarter, we posted revenues of $1.6 million, which was an increase of 65% on a pro forma constant currency basis over the second quarter of 2019. This growth occurred despite regional lockdowns in Europe where we have a majority of our AMDS sales. We also continue to secure marketing authorizations in key markets around the world, which with additional regulatory approvals we expect to secure position us well for further increases in AMDS' revenues, particularly as the pandemic dissipates in these markets.

Second, NEXUS posted revenues of 451,000, an increase of 48% on a constant currency basis compared to the second quarter of 2020. NEXUS was not approved in the second quarter of '19. We believe these revenue results would have been better for NEXUS as well as for our other products, if not for the renewed COVID-19 lockdowns and travel restrictions in Europe during a portion of the second quarter. We continue to see NEXUS cases scheduled for the upcoming weeks in March and remain optimistic regarding our prospects for this technology.

Our third device, E-nside, is our newest device in our portfolio to treat thoracoabdominal aneurysms with endovascular stent grafts. Our revenues in this product line, which include E-nside and extra design grew over 20% on a constant currency basis when compared to Q2 of 2019.

The fourth category is E-vita OPEN NEO. This is our newest product in the frozen elephant trunk category, which is used to treat dissections and aneurysms of the aortic arch. Revenues from this product line, which include the E-vita OPEN Plus and if you to OPEN NEO grew a 115% on a constant currency basis compared to Q2, 2019. The fifth device E-nya, we are currently in early stages of our limited market release, expecting to move to a full market release later in 2021. We expect demand for these five products to continue to build as a number of people are vaccinated as well as market adoption for these products increases. This will accelerate in Europe as the pandemic subsides. In addition, we expect to benefit from improved JOTEC inventory resulting from our own internal efforts and the onboarding of a second source sewing supplier.

Moving to our next initiative, international expansion in Asia Pacific and Latin America. This will be done through new regulatory approvals for existing products as well as expansion of our commercial footprint in these regions. Our revenues in Asia Pacific increased 3% and our revenues in Latin America decreased 5%, both on a pro forma constant currency basis in the second quarter '21 compared to the second quarter of '19. We feel that these results were hampered in both regions by the continued impact of COVID-19 and anticipate that the growth will accelerate as the pandemic subsides and we gain additional marketing authorizations in both APAC and Latin America.

Regarding our third initiative, we continue to make progress on achieving three regulatory approvals in major markets. More specifically, we expect to submit PMAs for PerClot and PROACT Mitral this quarter, while continuing to pursue the Chinese FDA approval for BioGlue. For PerClot, we intend to submit in Q3 2021, our PMA for approval for open surgery as well as laparoscopic indications across multiple specialties as well as for large-scale manufacturing capability. Similarly, we also expect to submit in Q3 2021 our PMA submission for a low INR label for the On-X mitral valve. This is similar to our lower INR label for On-X aortic valve.

As a reminder, the On-X aortic valve has a significant clinical advantage for patients over competitor valves that is it's the only FDA-approved mechanical aortic valve that can run on lower INRs from 1.5-2.0 rather than the standard of care 2.0 to 3.0. If our new labels approve, patients with On-X mitral valves will be able to be maintained on lower doses of Coumadin compared to patients implanted with other mechanical valves. The On-X mitral valve would be at 2.0 to 2.5 versus all competitive valves which would be at 2.5 to 3.5. This will lead to significant clinical benefits for patients. We believe this approval of our On-X mitral valve will enable us to take significant market share like the market share gains we've experienced with our On-X aortic valve.

Lastly, as it relates to regulatory approval for BioGlue in China. We remain actively engaged with NMPA and look forward to providing an update on our approval timeline when we have further clarity. In our view, approval of BioGlue in China does not meaningfully adversely impact or accelerating near-term revenue growth opportunity I described earlier.

In addition to our progress on these 3 initiatives, we also continue to make very good progress in our mid-term pipeline with key products that are currently in US clinical trials are ones, which we expect to start US clinical trials later this year. These 3 products are PROACT Xa, NEXUS and AMDS. We continue to make significant progress on the enrollment of our PROACT Xa trial. Our prospective randomized clinical trial determine if patients with On-X aortic valve can be maintained safely and effectively on Eliquis versus warfarin. We currently have enrolled 360 patients in this study. Feedback from surgeons and patients participating in this trial remains very positive. Despite pandemic headwinds and assuming the trial meets its endpoints, we believe we can still achieve FDA approval for this new indication by late 24 or early 25. If we successfully obtain such an approval, we believe the On-X aortic valve should become the market share leader in the aortic valve market for patients under the age of 70. In addition to the PROACT Xa trial, our partner Endospan continues to make good progress on its US ID trial for NEXUS known as the Triomph trial.

As for AMDS, we are on track to submit our ID in Q3 2021 which if submitted, would put us on track to begin our AMDS clinical trial by year-end. If these trials proceed as we expect, we anticipate FDA approval for PROACT Xa, AMDS and NEXUS by late 24, early 25 which will get the company an additional $1 billion in market opportunity at that time.

With that, I'll now turn the call over to Ashley.

Ashley Lee -- Chief Financial Officer

Thanks, Pat, and good afternoon everyone. Total company revenues were $76.1 million for the second quarter. 42% on a GAAP basis compared to Q2 of 2020 and up 35% on a pro forma constant currency basis compared to Q2 of 2020. Revenues came in ahead of our quarterly guidance due to improving procedure volumes in the US, in Europe as vaccination rates increased and lockdowns eased during the second quarter.

On a year-over-year basis in the second quarter of 2021, aortic stent and stent graft revenues increased 60%, reflecting increased procedure volumes and improved JOTEC inventory position. The addition of the AMDS in September of 2020 and improved adoption of NEXUS in the EU. On-X revenues increased 46%, BioGlue revenues increased 40% and tissue processing revenues increased 22% reflecting improving procedure volumes relative to the second quarter2020. On a pro forma constant currency basis, aortic stent and stent graft revenues increased 39%, On-X revenues increased 43% and BioGlue revenues increased 40%.

On a pro forma constant currency basis compared to the second quarter of 2019, On-X revenues increased 17%, aortic stent and stent graft revenues increased 11%, tissue processing revenues increased less than 1% and BioGlue revenues decreased 1%. On a regional basis, second quarter 2021 revenues in EMEA increased 65%, North America increased 30%, Asia-Pacific increased 13% and Latin America increased 132%, all compared to the second quarter of 2020. On a pro forma constant currency basis, revenues in EMEA increased 47%, North America increased 29% Asia-Pacific increased 13% and Latin America increased 130%, all compared to the second quarter of 2020. Our gross margins were 66% for the second quarter of 2021 and 67% for the second quarter of 2020.

G&A expenses in the second quarter were $40.8 million compared to $32.3 million in the second quarter of 2020. The second quarter of 2021 includes acquisition-related and other non-recurring charges of $3.4 million primarily related to fair value charges related to the AMDS acquisition. Second quarter interest expense of $4.9 million includes approximately 2.4 million of expense related to our term loan B, 1.1 million related to our convertible debt, non-recurring interest of $835,000 related to the extension of our Term Loan B and revolving credit facility, and approximately $500,000 in amortization of debt origination cost. Other expense in Q2 includes $1.4 million in realized and unrealized foreign currency translation gains.

On the bottom line, we reported GAAP net loss of approximately $2.2 million or $0.06 per fully diluted share. Non-GAAP net income was $4.8 million or $0.12 per share in the second quarter. Additionally, GAAP and non-GAAP earnings include the pre-tax gain of $1.4 million or approximately $0.03 per share related to foreign currency translation gains. Reconciliation of GAAP to non-GAAP income in EPS are included in the press release that we issued this afternoon. Adjusted operating income was $9 million for the second quarter of 2021 compared to $1.7 million for the second quarter of 2020. Adjusted operating income reflects add backs of amortization expense, acquisition-related charges and other non-recurring charges to operating income. As of June 30, 2021 we had approximately $50.5 million in cash, $319 million in debt, and the full $30 million available under our revolving credit facility. Adjusted EBITDA for the second quarter of 2021 was $12.8 million compared to $6 million for the second quarter of 2020.

Gross leverage, as defined by our credit facility stood at 5.3 times and net leverage stood at 4.5 times. These metrics do not include the proceeds from the sale of PerClot. Please refer to our press release for additional information about our non-GAAP results, including a reconciliation of these results to our GAAP results.

And now, for our outlook, as Pat mentioned, we are now providing revenue guidance this quarter due to the increased confidence in our business. Our new product launches, AMDS, NEXUS, E-vita OPEN NEO and E-nside are all performing well. We operated in the first half of the year without a normal supply of tissue due to the Tris issue and that issue has now been resolved. We also expect to see improved performance for Asia-Pacific and Latin America in the second half as the pandemic subsides. As a result, we are forecasting our second half to be up approximately 7% to 10% on a pro forma constant currency basis in '21 versus 2019, which excludes PerClot resulting in full year 2021 revenues of between $296 and $300 million at a Euro-USD exchange rate of 1.2. We also anticipate revenues for the third quarter to be between $71 and $73 million. These forecasts are based on the current and anticipated state of COVID-19 around the globe and forecast taken into account the fact that approximately 55% of our revenues are generated in North America and the remainder are generated overseas.

Even though we have seen significant improvement in the US in Europe regarding the impact of COVID-19 on our business, new COVID-19 restrictions and lockdowns are being implemented, and COVID-19 remains a significant challenge in Latin America and Asia Pacific. And finally, the guidance reflects the fact that we generated over $1.8 million in PerClot revenue in the first half of 2021, and PerClot revenues in the second half of 2021 will be minimal as Baxter is taking over the distribution of SMI manufactured PerClot under the transaction we just consummated. Regarding our ongoing investments designed to fuel future growth, we intend to continue to invest in our commercial channels, particularly in Asia-Pacific and Latin America as well as in our R&D pipeline.

We believe that we will be able to fund these investments through our ongoing operations and that we can comfortably make these investments and service our debt without having to raise additional capital.

I will turn the call back over to Pat for his closing comments.

Pat Mackin -- Chief Executive Officer

Yes, thanks, Ashley. So in closing, as you've heard this afternoon, despite the global pandemic our business performed quite well during the second quarter. I once again give the credit to the outstanding efforts of our employees around the world. Going forward, uncertainty regarding the impact of the Delta variant and uncertainty about continued vaccine adoption make it difficult to predict the impact on our business over at least the next couple of quarters. But what I can say with confidence is that our product offering is second to none in the treatment of aortic disease. When the pandemic largely subsides and procedure volumes return to normalized levels, we expect exceptional products to deliver double-digit growth on a year-over-year basis. We have several catalysts in 2021 that we did not have in 2020.

As I explained earlier, we have 3 initiatives that will drive growth between 21 and 24. First, in 21, we should see continued growth in our 5 new aortic stents and stent grafts; AMDS, NEXUS, E-nside, NEO, and E-nya. Second, we also anticipate further upside from our investments in our channels and new regulatory approvals in Asia and Latin America. And 3rd, we'll be filing our PMAs for both PerClot in the On-X mitral valve. All of these catalysts on our expectation to continue to deliver on these goals as outlined previously, supported by our strong financial position, leave us optimistic and confident as ever about the future of our prospects.

With that said, I'd like to turn open the line for questions and turn it back over to the operator.

Questions and Answers:

Operator

Thank you. We will now be conducting a question-and-answer session. [Operator Instructions] Our first question is from Mike Matson with Needham and Company. Please proceed with your question.

David Joshua Saxon -- Needham & Company -- Analyst

Yes, Hi Pat and Ashley, this is David Saxon on for Mike. Thanks for taking the questions. My first one is just on the PerClot sale for Baxter. As I understand it, it's going to be about $19 million upfront to you. So just wondering how you're thinking about prioritizing that, is that going to be mostly for paying down some of your debt, maybe doing it some smaller M&A or kind of reserve for any potential milestones you might have coming out like some of these deals like Ascyrus.

Pat Mackin -- Chief Executive Officer

Yes so I mean, regardless of where we put the cash, I mean we do, I think the last comments you made. We've got two milestones coming up, one for Ascyrus, which was $10 million once we get the ID approved and we just talked about, we are submitting that ID actually this weekend. So we're anticipating that idea will be approved in the second half of this year. So that's obviously $10 million of it and then we've got a $5 million milestone for NEXUS once they enroll 50% of their trial. We don't anticipate that happening public for another until outside of 2021, but that would be a chunk of the first upfront.

David Joshua Saxon -- Needham & Company -- Analyst

Okay got it. And then, I mean you've talked about the lower I&R label for On-X mitral. I was just wondering if you can help us think about the size of that opportunity, and I know the On-X aortic valve has a pretty high gross margin within the US. So should we expect something similar to the gross margin profile of the aortic On-X.

Pat Mackin -- Chief Executive Officer

Yes, so the mitral valve has a similar profile to the aortic from a gross margin standpoint. In the US, it's around 90%. The second part is that the mitral kind of the overall market opportunity and this is I think being conservative when we are just talking about mechanical valves, that it's probably about a $40 million opportunity at 90% gross margin for us. There is also an opportunity, and as we've seen with the On-X aortic where we actually cannibalized tissue surgical valves. So we have not even used those numbers in the math to come up with the $40 million. So that's just kind of the mechanical mitral opportunity we have to go after once we get this product approved and out in all markets.

David Joshua Saxon -- Needham & Company -- Analyst

Okay, that's helpful and then I guess last for me, I mean it sounds like the tissue issues are resolved. So how should we think about Preservation services in the back half. Thanks so much.

Pat Mackin -- Chief Executive Officer

Yes, so it was actually very positive, because if you think back to the beginning of the year. We call it the good news [indecipherable] quality issue and we worked through all the testing and the submissions and the tissues at the highest level of quality we expect. So, in the beginning of the year, we said we were really going to write off $5 million by the summer or we are going to have a bunch of extra tissue in the freezer. It turns out it is very positive, and like I said, we're not writing off any of that tissue and we have an extra quarter of tissue, in quarantine in the freezer right now. So now it actually shifts to a kind of processing and getting the tissue out going through our quality process and procedures. So we've got a lot of tissue, we just got to get it out the door. So I can't tell you exactly how it's going to flow, but we feel pretty bullish over the next 12 months that tissue will have a kind of a tailwind to it compared to what you saw in the first half.

David Joshua Saxon -- Needham & Company -- Analyst

Great, thank you, and congrats on the quarter.

Pat Mackin -- Chief Executive Officer

Thanks.

Operator

Our next question comes from Cecilia Furlong with Morgan Stanley. Please proceed with your question.

Cecilia Furlong -- Morgan Stanley -- Analyst

Great. Good afternoon and thanks for taking the questions. Pat, I wanted to just start on On-X strength in the US recently over the past few quarters. Could you talk about what you're seeing on an underlying basis is this more on the mechanical heart valve market, On-X specifically, if you could just provide more color in terms of really what's driving that growth that you've seen over the past few quarters.

Pat Mackin -- Chief Executive Officer

Yes, hey Cecilia. Thanks for the question. You know, I've had an opportunity and I think when we last spoke, I was out in 30 of the top cardiac centers in the last six months. And I can tell you, to a person at every institution and I probably talked to more than a 100 surgeons, to a person they all believe in the On-X, kind of, it's the anticoagulation, lower coagulation story. We're the only valve that can have less Coumadin today and we're the only valve that is looking at and studying the use of Eliquis. So it's just kind of a ground swell around it and literally every center I go to, were either bringing on new users in those centers or actually bringing on brand new accounts. So it's just a continued kind of momentum and I think it's the combination of the story. It's in the guidelines, having the only ones with the low INR and I think a lot of people are paying attention to this trial, which we've now enrolled 360 patients in. So, I think it's hard to pin down exactly what it is, but it's obviously been very strong growth over the last several quarters.

Cecilia Furlong -- Morgan Stanley -- Analyst

Okay, got it. And just in terms of 3Q guidance as well, I recognize a lot of moving parts, but could you provide a bit more color, in terms of what you contemplated just from a geographic standpoint, Americas versus other geographies that are still undergoing COVID issues. Thank you.

Pat Mackin -- Chief Executive Officer

Yes, I mean one of the things I think we've all learned in the last 18 months is this is clearly a moving target and it's a very kind of dynamic world. We obviously had a nice Q2. We've got a lot of momentum. We talked about, we put up 6.7% growth even without a quarter's worth of tissue. Particularly, it impacted our cardiac tissue. So we feel that's positive. Obviously, this Delta variant has started heating up even in the last week. So, we put these forecasts together with kind of what we knew at the time and we wanted to come out and get guidance for the full year with the second half. You already know the first half. So that being said, we tried to take into account everything we knew knowing that the things we started learning in the last few days, obviously starting out a little more negative. So, I think we've got a pretty good shot at having a good second half.

Now, if things go crazy, I don't have a crystal ball like anybody else. I'm not sure what comes next, what's the fall going to look like with this Delta variant. So, I mean, I think we feel pretty confident with the forecast we put out there, given what we know today.

Ashley Lee -- Chief Financial Officer

Hey Cecilia, this is Ashley. The only other thing that I would add to that too is that, I mean if you look back at our business historically, the 3rd quarter has always been down sequentially compared to the second quarter and a lot of that is due to the, the heavy holiday season that we experience in Europe and there is no reason to think that that we won't see something similar to that this year. And as you've seen in the last few years, we always follow that sequentially with a very strong 4th quarter. So that was another consideration that we factored into our guidance.

Cecilia Furlong -- Morgan Stanley -- Analyst

Thank you for the color.

Operator

But from open our next question is from Suraj Kalia from Oppenheimer Company. Please proceed with your question.

Suraj Kalia -- Oppenheimer & Company -- Analyst

Good afternoon. Pat, Ashley, can you hear me. All right.

Pat Mackin -- Chief Executive Officer

Hey, Suraj. Yes, we do fine.

Ashley Lee -- Chief Financial Officer

Yes.

Suraj Kalia -- Oppenheimer & Company -- Analyst

So let me start out, Pat, Ashley. Congrats. Once again, great quarter. Pat, I know you talked about the Delta variant and maybe I could be a little more specific geographically. Are you seeing any initial signs of the Delta variant impacting any of your proctoring sessions or US.

Pat Mackin -- Chief Executive Officer

Yes, it's, and this is a part I mentioned Suraj. It's literally like a day-to-day situation. I will give an example, I got an email from our country manager in Spain where they started locking down, they started pushing off elective cases. We had a NEXUS case that was scheduled with a proctor that had to get canceled. So it absolutely is affecting the proctoring. 2 days ago, I got a message from somebody about a hospital in Florida that has more patients in their hospital than they had in January. Right. So --it's just like every day there is new news that comes in. Now, I will say that, particularly in the US, the hospitals have done a great job managing COVID and I think they will continue to do so even if there will be some hotspots and you know where they are. Missouri has been a hot spot, Florida has been a hotspot. We're also seeing, we've had a lot of growth expectations in Asia-Pacific and Latin America and those places are still getting hit pretty hard. Australia is locked down Malaysia is locked down. Brazil has had a tough [indecipherable], particularly in Europe, we saw issues in the UK in the quarter, we saw issues in Spain in the quarter. And I can't predict what the Delta variant is going to do, but we're obviously still putting up numbers. It's just not, I guess the way to think about it. It's like we're running with a weight on our back, and we're not fully untethered at this point where we can do all of our cases and nothing gets canceled. There had been tons of cases moved or canceled for COVID impact type. Thanks.

Suraj Kalia -- Oppenheimer & Company -- Analyst

Got it Pat. Let me move on to my favorite topic, which PROACT Xa. So 125 patients enrolled in Q2. More specifically Pat, is this any center concentration in terms of enrollment.

Pat Mackin -- Chief Executive Officer

Yes, we've had, that's a good question. We've had. I'm not going to name the center, just because it's not appropriate, but we've had one center in particular, which is one of the highest-profile in the country, if not the globe, has been a massive enroller. They have done extremely well and a lot of this gets to kind of the logistics of the trial. This is different than most trials, as we've talked about. This is not a trial where you actually enroll patients in the surgery, and then they do the case this is going back and we have 30,000 patients that are available to be in this trials who've got an On-X valve. So a lot of issues going and finding those patients, getting them consented, bringing them in and we've had a handful of centers that have done an excellent job. We just sent out 31,000 letters to existing On-X patients to see if they're interested in participating in the trial. So we're learning as we go. We're having lots of investigator meetings, but we're expecting the momentum for this trial I think even to pick up from here.

Suraj Kalia -- Oppenheimer & Company -- Analyst

But if you don't mind my asking if you're at liberty to talk, what is the average age of an On-X patient, enrolled in either arm in PROACT Xa.

Pat Mackin -- Chief Executive Officer

Yes, I'd have to get pull that back for you. I actually pulled the data have.

Suraj Kalia -- Oppenheimer & Company -- Analyst

By age, I mean on On-X.

Pat Mackin -- Chief Executive Officer

Oh, yes. Yes, I actually pulled that for you because I knew you were going to ask. About 45% of the patients have had the valve in less than a year.

Suraj Kalia -- Oppenheimer & Company -- Analyst

Got it.

Pat Mackin -- Chief Executive Officer

55% have had it more than a year.

Suraj Kalia -- Oppenheimer & Company -- Analyst

Got it. One question. Final question for you, Pat, and one for Ashley and I'll plug both of them together. So Pat, your comments about On-X being the market leader for patients less than 70 years of age that caught my attention because that means you're looking at more than tripling your heart valve market. More specifically, Pat, can you square your comments with the push by TAVR companies into moderate ES and asymptomatic ES. That's for you, Pat. Ashley, gross margins were a bit shy of our estimates and even though PerClot was included, just kind of help us flush out as we look forward to Q3, Q4 and once PerClot is completely out, how should we think about gross margins. Gentlemen, congrats once again, and thank you for taking my questions.

Pat Mackin -- Chief Executive Officer

Yes, I'll go. I'll take your question for Suraj. So we've done a bunch of market research on and my comment was around assuming the PROACT Xa trial gets approved as we enroll the trial. We do the 2 year follow-up and it gets approved. So that's obviously if that happens. The market research that we have done shows that there is a big group of patients between the kind of 60 to 70. Currently, there is a kind of in the guidelines even there is kind of it as you have to make a decision between a bioprosthetic valve or a mechanical valve. And our market research shows that as you get closer to 60, a much higher percentage of patients would opt for On-X valve with Eliquis and as you move up to 70, that number would come down, but we still would be taking share from tissue valves up to the age of 70. So it's not saying that everyone under the age of 70 is going to get an On-X with Eliquis. It is saying, if you look at all the patients under 70, if this trial gets approved, we would be the market leader in that segment. And then Ashley, you want to take is gross margin question.

Ashley Lee -- Chief Financial Officer

Yes Suraj, yes, to your point, the margins for the quarter were a little bit lighter than we even anticipated, but what was driving that is, we routinely evaluate our inventory and our obsolescence quarter was a little bit higher than it normally is. The other thing is, we had some manufacturing inefficiencies that hit the P&L in the second quarter of this year not indicative of any recurring issues, but we decided few manufacturing inefficiencies that made their way in the COGS in the second quarter. If you look at the second half of the year, we think our gross margins are going to be In the 67% to 67.5% range give or give or take a few basis points on either and depending a lot on like geographic and product mix.

Pat Mackin -- Chief Executive Officer

Yes, I think the other thing I would add to that, just from a commercial standpoint is, we have, we built up some inventory for kind of waiting for regulatory approvals, and then the pandemic hit. So when your volumes drop off by 30%-40% for a quarter, you have stuff that will expire. So I think. I think we are seeing a little bit of a ripple effect of kind of the pandemic and some of the write-off, some stuff expiring just from up the demand went down when we had a normal supply plan out. So I think that will reverse going forward.

Okay. Operator, any other questions?

Operator

Mr. Mackin, there are no further questions at this time. So I'd like to turn the floor back over to management for closing comments.

Pat Mackin -- Chief Executive Officer

Well, first of all, thanks. Thanks again for joining the call and as you heard from the call, we had, I think a really strong quarter, both in the top and bottom line. Our new products are delivering, the Tris issue has been resolved, we're submitting 2 PMAs both PROACT Mitral as well as the PerClot this quarter. We're submitting the ID for AMDS this quarter. PROACT Xa is enrolling, NEXUS is enrolling. So the pipeline is really starting to take Stride here and we've got the Tris issue resolved. We're not going to write off $5 million. We now have an extra quarter worth the tissue to get out the door. So I think all-in-all we are feeling pretty confident about the second half and notwithstanding this Delta variant which none of us know how that's going to play out.

So, we're charging forward and I look forward to keeping you updated on our progress. Thanks again for joining.

Operator

[Operator Closing Remarks]

Duration: 42 minutes

Call participants:

Brian Johnston -- Vice President of Investor Relations Gilmartin Group

Pat Mackin -- Chief Executive Officer

Ashley Lee -- Chief Financial Officer

David Joshua Saxon -- Needham & Company -- Analyst

Cecilia Furlong -- Morgan Stanley -- Analyst

Suraj Kalia -- Oppenheimer & Company -- Analyst

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