Good morning, ladies and gentlemen. Welcome to the Lantheus Holdings Second Quarter 2021 Financial Results Conference Call. This is your operator for today's call. Please note that all lines have been placed on mute to prevent any background noise. This call is being recorded for replay purposes. A replay of the webcast will be available in the Investors section of the company's Web site approximately two hours after the completion of the call and will be archived for 30 days. I will now turn the call over to your host for today, Mark Kinarney, Senior Director of Investor Relations. Mark?

Thank you and good morning. Welcome to the Lantheus Holdings second quarter 2021 financial results conference call. With me on today's call are Mary Anne Heino, our President and CEO; Bob Marshall, our Chief Financial Officer; and Paul Blanchfield, our Chief Commercial Officer. Mary Anne will begin the call with introductory remarks and then turn the call over to Paul to give an update on the PYLARIFY commercial launch. Mary Anne will return to give a business update and then Bob will cover our financial results and updated guidance. Mary Anne will conclude the call with closing remarks, and then we will open the call for Q&A. This morning, we issued a press release, which was furnished to the Securities and Exchange Commission under Form 8-K, reporting our second quarter 2021 results. You can find the release in the Investors section of our Web site at lantheus.com. For those of you not on the webcast, you can find the slide presentation in the Investors section of our Web site under the Presentations tab. Before we get started, I would like to remind you that our comments during this call will include forward-looking statements. Actual results may differ materially from those indicated by forward-looking statements due to a variety of risks and uncertainties. In particular, the impact of COVID-19 on our business results and outlook continues to be a best estimate based on currently available information. Please note that we assume no obligation to update these forward-looking statements, except as required by applicable law, even if actual results or future expectations change materially. Please refer to our SEC filings for a detailed discussion of these risks and uncertainties. Also, discussions during this call will include certain non-GAAP financial measures. Reconciliation of these measures to the most directly comparable GAAP financial measures is also included in the Investors section of our Web site. With that, it is my pleasure to now turn the call over to Mary Anne.

Thank you, Mark, and good morning to everyone joining us on today’s call. I’m pleased to report that the second quarter was a successful and productive one. During the quarter, we announced the FDA approval and commenced the commercial launch of PYLARIFY, the first and only commercially available PSMA PET imaging agent for prostate cancer. DEFINITY performed well and has maintained its market leadership with more than 80% share of the U.S. ultrasound enhancing agent market, AZEDRA sales significantly increased and TechneLite delivered stable revenue sequentially. We are committed to building on this positive momentum and delivering value for shareholders. Before I turn the call over to Paul for an update on our PYLARIFY launch, I would like to provide background on why we believe PYLARIFY is an important addition to the treatment of prostate cancer. On May 26, the FDA approved PYLARIFY, a fluorine 18-labeled prostate-specific membrane antigen, or PSMA, targeted positron emission tomography, or PET, imaging agent. PYLARIFY identifies PSMA, the protein expressed on the surface of prostate cancer cells in men with suspected metastasis who are candidates for initial definitive therapy and/or with suspected recurrence of prostate cancer. Slide 7 highlights the time points where PYLARIFY received approval by the FDA. Starting with the purple box, initial staging describes patients who are candidates for initial definitive therapy and are suspected to have metastasis. While approximately 248,000 men are diagnosed annually with prostate cancer, currently we believe there are approximately 40,000 men in this category who may be eligible for PYLARIFY scans based on suspected metastasis. Second, as shown in the two blue boxes, there are approximately 105,000 and 25,000 men, respectively, who may have a suspected recurrence of prostate cancer as indicated by rising prostate specific antigen, or PSA. These patients are also candidates for a PYLARIFY…

Thank you, Mary Anne, and good morning, everyone. It's a pleasure to be here to share our launch progress today and our plans to maximize the potential of PYLARIFY to benefit the U.S. prostate cancer community, our customers and shareholders. In the two months since the FDA’s approval of PYLARIFY, we have seen strong patient, customer and healthcare provider interest, and the approval was covered by multiple national and local media outlets. While today I will not present product specific sales data or current projections for PYLARIFY, I will share that post approval PYLARIFY has been used to image patients at freestanding imaging centers, hospitals and government facilities, with most of these sites already imaging multiple patients. We are tracking these usage metrics closely and are pleased with the breadth of interest and recurrence of ordering that we are experiencing. Our manufacturing network now encompasses 12 PMFs that have been activated to-date, including the three largest metropolitan areas in the U.S.; New York, Los Angeles and San Diego, and Chicago, as well as select locations in the Southeast, the Midwest, the Southwest and the Northwest. We expect PYLARIFY availability to continue to expand across the U.S. over the remainder of the year, with broad nationwide availability by year-end. While we are discussing the scope of our PMF network, it's important to add that we have diversified our national manufacturing network across multiple partners and our confident that our network will be able to manufacture PYLARIFY at scale. F 18 is a well understood cyclotron manufactured isotope, and PET manufacturing and PET imaging facilities have significant experience working with F 18. Indeed, F 18 is a radioisotope used in almost 2 million doses of FDG on an annual basis and we have contracted with our PMF partners to ensure adequate supply…

Thank you, Paul. Now I'll review other commercial products and product candidates in our portfolio, starting with DEFINITY. Bob will speak to the actual revenue results as compared to the prior quarter and prior year. But I'm pleased to report that during the second quarter, DEFINITY demand exceeded pre-COVID-19 levels. While still very much dependent on geography and customers, over 50% of our DEFINITY sales team’s promotional efforts are now in-person, up from approximately 10% at the start of the year. Our sales representatives have looked forward to reengaging in-person with their customers. These positive trends, combined with our market leading and stable share position, have resulted in DEFINITY returning to strong revenue growth. As we approach the 20th anniversary of DEFINITY’s FDA approval at the end of this month, we believe the market opportunity for this agent remains significant. And we anticipate DEFINITY sales will continue to deliver sustainable growth. Moving to AZEDRA, we are pleased to see sales growing. And with increased accessibility to customers, we've begun introducing changes to our customer approach, which we believe will optimize AZEDRA’s availability as the only approved treatment for pheochromocytoma and paraganglioma. Several new centers of excellence have chosen to make AZEDRA available to their patients. And we have launched a new peer-to-peer education campaign to increase awareness of AZEDRA and its value to patients. I'm pleased to report that the percentage of AZEDRA patients now completing the second dose of therapy is up significantly from last year. This is important because in the long-term follow up of the pivotal trial for AZEDRA, the overall survival for patients who received two doses was more than twice as long as patients who received only a single dose. In June, we hired Kate Holland [ph] as Vice President, Radiopharmaceutical Therapy Oncology. In this…

Thank you, Mary Anne, and good morning, everyone. I will provide highlights for the second quarter financials focusing on adjusted results, unless otherwise noted. Turning to the quarter, revenue for the second quarter was 101.1 million, an increase of 53.1% over the prior year quarter. A comparison that includes the full impact on run rate revenues from the prior year of the COVID-19 pandemic and are now divested in Puerto Rico operation as well as the partial contribution from the Progenics portfolio, namely RELISTOR. Beginning with precision diagnostics, revenue of 90.4 million was 43.6% higher from the prior year quarter. Sales of DEFINITY net of rebates and allowances were 59.8 million, 61.2% higher as compared to the prior year quarter, driven by sequentially higher volumes. TechneLite net revenue was 23.8 million, up 27.3% from the prior year quarter on solid volumes supported by opportunistic generator sales. Within other precision diagnostics, Xenon’s performance has continued at similar levels to the previous sequential four quarters. Radiopharmaceutical oncology contributed 2.8 million of sales, up 28.8% from the prior year quarter due mainly to promising and solid performance from AZEDRA, offset in part by the loss of revenue tied to the strategic divestiture of the Puerto Rico operation. As a reminder, in addition to AZEDRA, PYLARIFY and QUADRAMET reside within this revenue category. Lastly, strategic partnerships and other revenue was 7.9 million, driven primarily by the RELISTOR royalty. Also during the quarter, we completed the sale of cREPO, a cardiac artificial intelligence software solution to a strategic partner for the Japanese market. Gross profit margin for the second quarter was 52.6%, an increase from 41.7% posted in the second quarter of 2020 on a similar basis. The increase is due mainly to the impact of COVID-19 in the prior year comparison. In the current…

Thank you, Bob. As you can see, the second quarter was a successful and productive one for Lantheus. With the approval and launch of PYLARIFY, strong DEFINITY performance and continued financial strength informing full year guidance, we are confident about our growth momentum and our ability to deliver shareholder value. Before I open the call to questions, I would like to recognize the progress we've made not only this quarter, but also year-to-date, all against the uncertain backdrop of continued evolving global pandemic events. As always, the performance of Lantheus is made possible only by our committed employees who continue to work tirelessly to guarantee we best serve our patients, healthcare providers, customers and shareholders who place their trust in us. I recognize, thank and appreciate them for their efforts. With that, Bob, Paul and I are now ready to take your questions. Operator, please go ahead.

Thank you. [Operator Instructions]. And our first question comes from the line of Richard Newitter from SVB Leerink. Your line is open.

Thanks for taking the questions. Wanted to maybe start off on PYLARIFY contribution that's anticipated or baked into your outlook for the back half, if you could just give us a sense as to what you're assuming if anything for 3Q contribution? The consensus kind of had a 2021, about 5 million to 6 million placeholder in there. And in light of the $5 million impact that you mentioned exiting the TechneLite contract, I'm just curious about the moving parts there. Is that the right placeholder for PYLARIFY, or is PYLARIFY maybe a little higher now that you have approval? What you see there that counters that $5 million that’s coming out from TechneLite? Thanks.

Good morning, Rich. I'm going to let Bob take that one here. As you know, we're not giving specific guidance on -- product-specific guidance on PYLARIFY, but I'll let Bob give you some general range there.

All right. Good morning, Rich. So as you think about the guidance for Q4, I think you and industry generally understand that the launch is just getting underway. And as such, I do think that things have been modeled appropriately. The makeup, if you will, of the TechneLite contract really is coming off of the strength of the underlying business. And so what I'm like pointing to there is DEFINITY is doing extremely well. We're very pleased with the progress it's making. And as you can see in this morning's results from Q2, we’re returning to pre-pandemic levels. Of course, there’s a little bit of seasonality. Q3 is generally going to be our lower sort of sales revenue quarter. But fourth quarter is generally our highest revenue quarter for the year. So in the forecast is our -- is already considered PYLARIFY. We did have it baked some of it earlier, because we had high confidence in approval as it went forward. But I do think that what has been sort of modeled feels appropriate as we get this underway. And as we have continuously said, we think 2022 is the real sort of takeoff for PYLARIFY.

Thanks. That's helpful. What was the reason for the contract exit at TechneLite? How do we think about that going forward? Is that just $5 million that kind of goes away forever and a new base? And then I'm just curious if not for that, would your guidance likely have been $5 million higher, all else equal?

Let me just address this. The 5 million is across the entirety of the second half, Rich. So it would be sort of think of it evenly spread between Q3 and Q4. But Mary Anne --

Yes, I’ll address the larger issue of your question that doesn’t go away forever. These contracts are negotiated at this point almost on an annual basis. And that's more about the dynamics in the market that we see occurring really in the radiopharmacy market. And my stance on this, and we chose voluntarily not to enter into what we saw as a noxious contract, this particular contract. We had a similar situation back in 2015, where we took the same decision. And I will say, honestly, at the time, it was a much bigger decision for the company because at that time, that contract represented a much more significant piece of business for the company and on a much smaller revenue base. And we still took the stance to say that we would not enter into a noxious contract. We don't see it as being healthy for the market. And that's the same stance we're taking today. But I would not take it as a permanent decision. Back in that timeframe, within a few quarters, we were back in a contracted -- full contracted status with that customer. And that's I would say the nature of this market more than anything else.

Okay. But if you don't negotiate something on terms you find appropriate or reasonable, that will be an annualized $10 million that would theoretically kind of have to come out from whatever one was thinking about '22 prior. Is that right?

So I'm not going to agree with that statement, Rich, because that means that we would not change the amount of business that we have with the other players in the market and the other players in the market might not pick up more share of the market, and that is a fluid event that we see.

Okay, very helpful. I'll jump back in queue and let others jump in. Thanks.

And your next question comes from the line of Anthony Petrone from Jefferies. Your line is open.

Hi. Thank you. A couple of questions. Mary Anne, first congratulations on again a strong year so far with PYLARIFY clearance. My questions would be on PET manufacturing facility clearances. I know you had several secured heading into launch and there was more coming on in the next six months, so just kind of looking to get an update there. How many will be in place starting in 2022? And then maybe a bit of an update on the CMS pass-through code, also an initiative that was evolving into 2022? And then lastly, I'll just throw it in just on the commercial side. Any updates there on reimbursement for PYLARIFY? Thank you.

Terrific. Good morning, Anthony. I'm actually going to let Paul speak to all that, because he's much closer to it. When you hear me, often some of those thoughts I usually get them right from Paul. So I'll let him address them directly.

Thanks for the question. So I’ll take it in two parts. The first part was related to the PMF activation and our rollout plans, and the second related to our CMS pass-through. So I'll take the first part. As we mentioned, we do have 12 PMF sites activated across the country, including the three largest metropolitan areas of New York, Southern California, Los Angeles, as well as Chicago. We do have plans to roll that out and to expand our commercial footprint across the major footfall cities in the United States to get to more than as you'll see on pylarify.com more than 30 sites by the end of the year, which would get us to the vast majority of coverage for the U.S. marketplace by year end, which aligns as I segue to the second piece around our pass-through status. As we have conveyed, we do plan to submit our pass-through application by September 1 of this year, which would coincide with activation of pass through for the Medicare hospital outpatient setting, which is obviously very important for this patient community to go into effect January 1 of 2022, which would align with our PMF activation coverage to cover the majority of the market. And so we feel those two are very well synced to support continued growth on PYLARIFY not only through this year, but, as Bob mentioned, in 2022.

Thank you very much.

Thank you.

Anything else, Anthony?

Just my follow up would be on DEFINITY. Just in terms of looking at obviously ESG, there was procedure backlog due to COVID. It looks like certainly some of that came back in the quarter. So maybe just a little bit of an update on echocardiogram landscape? Is there a way to sort of quantify what the backlog still is at the moment if there is still one? And how long of a tailwind is that perhaps into later this year or early into '22? Thanks.

So that's a little bit of a tricky question now, Anthony, because as Bob mentioned, this period of the year is usually one where we tend to see what we call either seasonality or vacationality because you tend to have a little bit of a lull in procedures being done because of both patients being on vacation and then staff being on vacation. So now we are trying to kind of say, is that not going to happen? Are people less likely because of trying to catch up with as you say, what is the backlog? So we really won't know the answer to that until we see the data in retrospect, because that's something we only see in retrospect, not in -- we can't see it in real time. But as I said, what we have seen to date is we've seen strong rebound, and we are now at a point where we see DEFINITY performance exceeding for the data we have, DEFINITY performance exceeding pre-pandemic levels. We assume that that is because the underlying market which is echo procedures in general, that they are in fact what is driving up performance. But again until we see the data in retrospect, we can't confirm that.

And our next question comes from the line of Larry Solow from CJS Securities. Your line is open.

Thanks, guys. Just a couple of sort of high level questions. I realize you can't really quantify sales and whatnot, but just on the initial PYLARIFY sales, just curious if you have any anecdotal thoughts on doctor awareness, patient awareness as the drug came out or as the tracer came out on initial sales? Can you just give us any feel? Are they going towards docs or using Zoom? Are these new docs? Any color on that would be great.

So I think -- good morning, Larry, first. Thanks for joining the call. As we mentioned, we will not be referring to specific data on PYLARIFY sales. And I'll let Paul speak to this. We were very pleasantly I wouldn't say surprised, but we were pleased with the amount of coverage that PYLARIFY received at launch, and Paul can elaborate a little bit on that.

Yes, absolutely, Mary Anne. So I think we're incredibly pleased, right, the PYLARIFY, the first and only commercially available FDA approved PSMA PET imaging agent was picked up by many media outlets across the country. We have seen, as we've mentioned, PYLARIFY be ordered at multiple types of centers, whether that's freestanding imaging centers, hospitals, government facilities, the vast majority of these are already ordering multiple scans. And so we have seen strong uptake. I would note that with the approval, we received activation of two specific PMFs and we've been rolling that out more where we are now up to 12 as of the middle of July. It is important to note that as I mentioned in building out our commercial infrastructure, we are driving awareness. There was significant media attention. Physicians and healthcare community are certainly aware of PYLARIFY and what this product could mean to the U.S. prostate cancer community. But we do have our own dedicated marketing and sales teams that are out there making sure that physicians, healthcare professionals and imaging centers are aware of the benefits of PYLARIFY, as Mary Anne noted the four major benefits, we’re out there actively ensuring that we are not only making awareness, but building the market to ensure that we have a successful launch this year and in years to come.

I think, Larry, we have to be somewhat humble about this. We'd like to believe that it's on the tip now with everybody telling this is a classic launch where you have to build awareness, we're building up PMF network and then we were also, as Paul said, building what is the slow and steady awareness of what the benefits of the product are, how to use the product, where to use the product? We're confident that that will all come to fruition, but we're taking it very seriously as a very classic launch of what will be a long held product in the market, and that's how we're treating it.

Yes, absolutely. Can you just help just in terms of building out your SG&A infrastructure, particularly on the sales and marketing side? Obviously, you're at a run rate now of I think like 65 million, 70 million, up from like 40 million last of couple years pre-Progenics, pre-PyL. Do we see significantly more increases in this number? Does it go to 100 over the next couple of years, or is it just more or less continue to grow, but maybe not that fast? Any clarification there would be great.

Larry, thanks. I keep the financials in a very tight fist, as Paul would probably attribute to me. I think what you're seeing is, the ramp that you saw from Q1 to Q2 is how you should sort of think -- you remember I said think in terms of OpEx about $40 million to $45 million. As we get to the back half of the year, you saw we were at 42.8 for this quarter. Maybe it's a little bit more, but that has a lot to do with activities that are also in R&D. But you should expect that we're going to normalize and sort of flatten out very close to where we are at the moment. I do not anticipate a continued ramp. I would expect profitability to sort of really kind of manifest itself as you think in terms of Q4, Q1 Q2 kind of thing, because we're hitting that peak spend level to whereby we can now drive sustainable top line growth. So we've been making the pre-investment to help support the commercial teams, to support R&D, hold back office sort of in check, which is where you see the synergies that we took, that we were then able to sort of reinvest at least in the near term to be able to drive that sustainable growth longer term. So I do think you're seeing -- I would expect gross margin to continue to improve, but I would also expect to see expenses level out.

Okay. And then just -- I noticed in the Q that the fair value of the CVR related to PyL, PYLARIFY actually went up. Is that strictly primarily at least just a function of you got approval, it’s on the market, it's closer to potentially getting some of those -- hitting some of those thresholds? Is that based on that, or is there anything else you can discuss on that?

Yes. So the way you determine the continuing liability in this case, fair value, you do take what is event current internal forecast. And from that perspective, then you run it through Monte Carlo simulation, which has embedded volatility assumptions as well as an appropriate discount rate. And now it's really kind of in that discount rate where you attribute it to, did you derisk things like was it approved or not approved, or is there still execution risk and so forth and so on, which I think is also potentially embedded in the volatility aspect of it. So it is a function -- it's a multi-factorial type of output, input, and then output. And so I think the key for people here is one, it gets determined quarterly. So as any of these inputs change, so can then the value of this contingent liability. So what people should not invert is this is some sort of long range forecast or guidance that we're providing. But it is an accounting mechanism that takes all of these different inputs into consideration as we look forward.

Okay, great. Fair enough. Just last question on DEFINITY. I know, obviously, you mentioned market opportunity remain significant. Any reason to believe that as we -- obviously still some noise and whatnot from COVID, but hopefully that's begins to wane -- continues to wane, any reason as we settle down, maybe starting from 2022, that this can't -- DEFINITY won't be return to sort of its double digit growth, maybe not that 20% we saw for the last few years, but double digits. Is that a fair assumption?

So, as I said, we're already exceeding pre-pandemic levels. So we're seeing performance that already matches what we were seeing pre-pandemic. And now I want to make sure we're being realistic here, because you put the range there yourself. Pre-pandemic, we were already not at 20%. We were double digit, as you said. But I think --

Right, high teens rather than mid teens.

And this is something that we do want to because of the relevance of DEFINITY to our forecast and to our revenue, we do report as out of [indiscernible]. So you'll see the DEFINITY performance through this quarter.

Yes. When I look at the two-year stack, even just for Q2, that number is I think about 17% or so. So it could have put that performance -- this is where we kind of get the confidence in saying, are we back at pre-pandemic levels? Well, it sort of looks like the team's growth that we would have expected, which what Mary Anne was talking about in terms of backlog, we won't know that for a while. But this would imply more of a sort of a normalized market environment.

And I'll say and Paul can weigh in here as well. It's a significant asset for us. We have a dedicated business team too. Paul and team did a great job earlier this year as we do every year looking at what are the resources needed to continue to support this asset?

I think we remain very optimistic about DEFINITY’s future as we're coming up on the 20th anniversary of DEFINITY’s FDA approval at the end of this month, but we believe the market opportunity for this agent remains significant. There are still a significant number of suboptimal echoes out in the marketplace that could benefit from the use of an ultrasound enhancing agent. And we maintain our 80% market share as the contrast agent of choice, and believe that DEFINITY sales will continue to grow in the future.

[Indiscernible]

Excellent. I appreciate all the color, guys. Thanks a lot.

You’re welcome.

And our next question comes from the line of Erin Wright from Credit Suisse. Your line is open.

Hi. Thanks. How are you thinking about the potential tailwind from Novartis’ potential prostate cancer therapeutic? Could that be meaningful for you? And then a second kind of question here, just given some of the protocols associated with Biogen’s Alzheimer's approval could increase PET scans tied to that approval that all represent an opportunity for you as well.

So, Erin, good morning. This is Mary Anne. I think you're bringing up a great point about the larger market and the role of isotopes in the market and PET scan in the market. Certainly, the Alzheimer's product speaks to the role of PET scanning and companion diagnostics in the market, which we're thrilled about because that is -- for the future of Lantheus, that's an area that we -- not particularly Alzheimer's, but that's a larger area where we intend to be very strategically involved and that is the use of isotopes and isotope-related products in overall treatment, diagnostically and therapeutically. Specifically for the Novartis product, while that comes to market and we were also thrilled to see the readout it had and the efficacy associated there, because we have our own products in our pipeline in similar fashion, we think there again that demonstrates the positive role that companion diagnostics will have. You heard me mentioned earlier that PyL has been chosen as the companion diagnostic with companies such as Regeneron, Bayer and POINT Biopharma. That really points to what we are doing with our pharma services group, which is really becoming the partner of choice for a lot of the work that's going on in clinical development, where these types of biomarkers are being used not only to make clinical development more efficient, but really to ensure that patients are getting drugs that have a higher likelihood of being therapeutically valuable to them. And that decision is being made earlier and earlier in clinical development, and we're thrilled to be part of that.

Okay, great. And then on DEFINITY, could you give us an update on the competitive landscape, what you're seeing now and where market share stands? Is it still roughly in that 80% sort of range? Thanks.

I’m going to let Paul speak to that because he’s much closer to it.

Thanks, Mary Anne. Yes. So on the competitive dynamics, we still see ourselves as the market leader, with roughly 80% share of the U.S. marketplace. We see continued growth. We have maintained our leadership position and remain the contrast agent of choice across the marketplace. And so we remain very pleased after 20 years to still be able to be the preferred partner across echo labs around the country and continue to grow as we support our customers and ensure they understand the benefits that DEFINITY brings to their practices.

Okay, great. Thank you.

And we do have a follow-up question from Richard Newitter from SVB Leerink. Your line is open.

Hi. Thank you for taking the follow up. Just because I'm getting asked the question, I'm just going back to what I had asked earlier. I want to make sure I'm clear. The $5 million impact of TechneLite that gets spread out evenly roughly between 3Q and 4Q, I guess just if not for that, given that you're still raising your full year guidance, would your guidance have gone up by even more? In other words, if not for that. In other words, is DEFINITY’s momentum underlying getting baked into your backup guide as continuing and therefore that marginally offsets some of the headwind that that TechneLite creates?

Rich, more or less, yes. It really is sort of ongoing trends that we see in DEFINITY taking into account the seasonality of things, but it is what is making up the difference more or less, yes. And there are a lot of other pieces and parts we’re better moving within, timing of Neurolite and Cardiolite and so forth and so on. So it is a function of DEFINITY’s underlying core business. But, of course, we have some PYLARIFY baked into this as well. But what is [indiscernible] have had higher guidance? It would have been marginally different potentially. But again, there's also an external environment against which we are guiding into that we still want to as -- even in Mark’s opening remarks that we have a Delta variant that's out there causing a lot of news, but not necessarily headwind. So we are cautious in the way we think about things, but at the same time we're very confident in our underlying business. The core business is doing extremely well. It's embedded in the results. You can see it. And that's what led us to have the ability to sort of move our guidance range for the full year to account for our relative over performance year-to-date and then, of course, where we see that business going through the balance of this year.

Okay, that's helpful. Thank you. And just two other product questions on AZEDRA and RELISTOR. First on AZEDRA, you said you had a lot of promise in 2Q. It sounds like you're really building a stage for a much steeper or setting a stage for a much steeper kind of sequential ramp moving through the year into '22. But is that the right way to think about it? And how much of a contributor should we be thinking about for AZEDRA in 2021, or is this really going to be a 2022 product? And same thing with RELISTOR. What's the run rate? Is the performance you saw in 2Q kind of sustainable by quarter going forward?

Yes. I'll speak to your first, Rich, because I do want you to hear what I said. Promising was the right word to hear. But I think you need to understand the base. When you talk about steep ramps, you need to -- what we're jumping off from and I'll jump off from like the comments I've made before. I've been really clear that we felt, and it was true, we were blocked access to customers really throughout the pandemic with AZEDRA because what we didn't have coming into the pandemic is we didn't have relationships really already built with those customers. That was from a historic perspective that was Lantheus didn’t kind of own those relationships before the acquisition. And they were very, I would say, kind of young and only forming relationship [indiscernible] have had. So that was really a relationship that was poorly shut down by the pandemic. And as you heard me say today, that is something that now more recently we've seen accessibility to those customers really start to reopen. And so we've been able to begin executing on what we've said all along we would do with the acquisition, which was to really bring change to what the model is of how to interact for that particular asset with the community, that of patients and caretakers and treaters, that are necessary to really kind of bring the awareness there. And now we're starting to see some results, and we're really pleased with what we saw in second quarter. And that's the beginning for us of what we see is what the optimal -- kind of the optimal promises for that product. But I need to be really clear. This is not PYLARIFY from magnitude of what's possible here. It is an orphan disease. And…

Yes. And one, just to level set too on size and you can look at our radiopharmaceutical oncology which is where AZEDRA sits from a total revenue contribution perspective. It is the main driver of that number, which I have noted. At RELISTOR, we have continuously be able to tell people at a pretty steady stream, which has ranged between $4.5 million and $5 million. We're trending toward the higher end of that range in more recent quarters, and we're very pleased with the ongoing contribution that we're seeing from our partner. And at this juncture, we don't control it. So we can't sort of speak to what the future trends might be, but what we're experiencing now is very solid and very pleased with it.

Okay. Thank you.

[Operator Instructions]. I’m showing no further questions at this time. Ladies and gentlemen, thank you for participating in today’s conference. This concludes the program. You may now disconnect and have a wonderful day.