Good day, ladies and gentlemen, and welcome to the DermTech third quarter 2021 earnings conference call. At this time, all participants are in a listen-only mode. Later, we will conduct a question-and-answer session, and instructions will follow at that time. If anyone should require operator assistance, please press star, then zero key on your touchtone telephone. As a reminder, this call may be recorded. I would now like to hand the conference over to your first speaker for today. That is Caroline Corner, Investor Relations. Please go ahead. Thank you, Operator. Welcome to DermTech's third quarter 2021 earnings call. Joining me on today's call are Dr. John Dobak, President and Chief Executive Officer, and Kevin Sun, Chief Financial Officer. This call will include forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. All statements made on this call that do not relate to matters of historical fact are considered forward-looking statements. Forward-looking statements made during this call, including projections of future performance, are based on management's expectations as of today, November 9, 2021, and are subject to various factors, assumptions, risks, and uncertainties, which change over time. Actual results could differ materially from those described in such statements. Several factors that may contribute to or cause such differences are described in today's press release on DermTech's most recent filings with the SEC, including DermTech's annual report on Form 10-K for the year ended December 31, 2020, and quarterly report on Form 10-Q for the quarter ended September 30, 2021. DermTech undertakes no obligation to update these statements except as required by applicable law. DermTech's press release for the third quarter of 2021 results is available under the Investor Relations section of the DermTech website, www.dermtech.com, and includes additional details about DermTech's financial results. Also available on the DermTech website are DermTech's latest SEC filings, which you are encouraged to review. A recording of today's call will be available on the DermTech website by 5:00 P.M. Pacific Time today. Now I'd like to turn the call over to John. Thank you, Caroline, and thank you everyone for joining us today. A few weeks ago, we attended the Fall Clinical Dermatology Conference in Las Vegas. This is the second-largest dermatology conference behind the American Academy of Dermatology's annual meeting in the spring. Not only did DermTech have a tremendous presence at the conference, and our technology was showcased in a large plenary session, but in general, the potential of genomics and the inroads it is making into dermatologic care was visible at a level that I have not seen before. As I walked the halls of the conference, I overheard numerous dermatologists and industry people having discussions about genomic applications in dermatology, which again, is a first for me, and it signals growing enthusiasm among the dermatology community about how genomics can improve patient care. With that, I will share with you an anecdote about how our DermTech Melanoma Test, or DMT, dramatically improves patient care. This particular story involves a dermatology physician assistant who had a history of atypical moles and concerns about melanoma. She was a bit skeptical about our DMT and wanted to try it on several lesions on her own body before offering it to her patients. One of the lesions tested turned out to be double gene positive and was subsequently diagnosed as an early-stage melanoma in situ. She even retested one of the negative lesions six months later over some lingering concerns about it, and it remained negative, giving her significant peace of mind. She has become a real believer and regular user of the DermTech Test and continues to use it for her own skin checks. This case study highlights how our melanoma test enables early melanoma detection while avoiding unnecessary surgical procedures. Many companies experienced softness in the third quarter, and DermTech was no different. Our growth challenges, for the most part, were external and included the Delta variant wave of the pandemic and pent-up vacation demand by both clinicians and patients. Sales rep access to physician offices declined again to less than 50% of pre-pandemic levels, and patient traffic for medical dermatology was soft, though this number is harder to quantitate. We also were impacted by Hurricane Ida, which disrupted the Southeast in one of our fastest-growing territories, Louisiana, but also had an impact on our more mature territories in the Northeast due to extensive flooding as the storm moved across the country. We estimate that Hurricane Ida alone impacted our overall test volume by at least 5% in Q3 and continues to impact one of our larger customers in Louisiana that had their practice destroyed. Despite experiencing this trifecta of challenging external factors, we continued to execute against our core business drivers. Our year-over-year quarterly assay growth was healthy and increased 140% from 1.2 million to 3 million, with sample volumes growing from approximately 6,700 to approximately 11,720. For the year through the third quarter, we have performed almost 33,000 melanoma tests versus almost 16,000 for the same period last year, despite operating in a difficult environment with a sub-optimally sized commercial team. Our Q3 assay revenue was essentially flat sequentially at 3 million, with a slight increase in ASP to $252 per sample. We also increased our Medicare proportion to record levels as we continue to penetrate this ideal patient population for our non-invasive melanoma test. We did see a healthy increase in unique ordering clinicians, which grew by 11% sequentially, or about 160 clinicians, to approximately 1,590. The modest assay revenue growth, despite the increase in unique ordering clinicians, underpins the macro environmental headwinds that kept sample volume and consequently assay revenue relatively flat over Q2. The most significant development of the quarter was the completion of our sales force expansion and our effort to build a world-class dermatology sales organization, which we have been delaying for the past 18 months due to the pandemic. We now have 72 sales reps, nine regional directors, and two area directors to address a larger number of approximately 9,000 to 10,000 professional dermatology target clinicians. This team has an average of 13 years sales experience with an average of seven years in dermatology sales, along with 76 President's Club winners and all of them with new product launch experience. These reps are currently undergoing classroom and field training, and we are taking the time to be thoughtful as we split territories and onboard the new reps. We now have the core infrastructure to drive future growth and provide a buffer against regional external factors that can hamper this growth. We expect contributions from the new hires to kick in during Q1 2022 and beyond. We expect to approximately double our sample volume this year over last year, and we are optimistic a similar trend will continue and/or accelerate through 2022 now that we have reached full commercial scale and the worst of the pandemic is hopefully behind us. Another positive recent development is the completion of our first pilot with an integrated primary care network in Florida. Due to the success of this pilot, we are now approved to commence sales of our melanoma test to their 78 clinics and approximately 300 providers. Through the remainder of this quarter, we will work to train and educate the providers in the network that have interest in accessing the technology. We currently plan to deploy our Florida sales team and medical science liaison team against this account to pull through potential adopters. The success of the pilot was due to the enthusiastic reception from the primary care physicians who participated in the effort and word of mouth interest from other network physicians that wanted access to our melanoma test. We also recently expanded the pilot with another large primary care network in the Midwest and are hoping to complete this pilot in the next one to two quarters. We have begun investing in the selling infrastructure to primary care networks, which consists of dedicated personnel and marketing initiatives to develop a robust pipeline of network opportunities. We have previously discussed various strategies to sell into the primary care channel, and we currently believe the most efficient strategy is to dedicate focused teams of sales reps against the networks after we have secured a commitment to introduce our melanoma test throughout the entire network. Through this effort, we will build our initial foundation in primary care selling, which we expect to develop further as the Carcinoma product for non-melanoma skin cancer becomes commercially available. Our telemedicine in-market beta test continues to progress nicely in Florida. We are pleased with the volume of app downloads, which indicates interest in the offering. As expected, acquisition costs per teleconsult and per test order were initially high. However, these costs will decrease as we become more efficient with our digital marketing and social media targeting and after we optimize price and the customer experience. We are encouraged by these initial results and are working to expand the number of states where this solution is available. With further expansion, we will gain synergies with our Find a Doctor marketing effort by providing the telehealth option to patients that visit our Find a Doctor page. We are also developing channel partners to both leverage our technology solution and/or offer our remote clinician-guided sample collection service. We recently established a contract with DermatologistOnCall, a leading dermatology telehealth provider in the U.S. DermatologistOnCall will provide teledermatology services as a covered benefit for 20 million lives in 2022. Under this agreement, a board-certified dermatologist will review a picture of a suspicious lesion submitted through the DermatologistOnCall's technology platform and order a DermTech Melanoma Test if warranted. DermatologistOnCall will provide supervised remote collection of a skin sample using our Smart Sticker, and the sample will be sent to our Gene Lab to run the test. An important part of our telehealth strategy will be to further expand partnerships with virtual care providers and develop our customer ecosystem beyond the brick and mortar. Building this customer ecosystem positions us to address an unmet need for access to dermatologic care and helps keep virtual visits as virtual as possible, which is especially attractive to other online healthcare platforms, including health insurers and employers. Our activity with regional and national payer groups remains robust and is our second core business driver. We recently signed agreements with a fairly large multi-state Blues plan with approximately 2 million covered lives with effective dates within Q3 of this year. This plan covers new territories that were created with our recent sales expansion, so there will not be an immediate impact on revenue. However, we are optimistic it will facilitate adoption and awareness in the new territories. We are also pleased with the progress with several other important payers, and we are optimistic we will announce additional successful contracts in the coming quarters. The TRUST Study has been published, and we are educating payers that requested to see the data published about the importance of the results. We are also working to publish the results of the Optum economic study, which is another data set that payers have re-requested to see in peer-reviewed published form. We expect to have this paper submitted for peer review before the year-end. We estimate we now have approximately 90 million covered and/or contracted lives in the U.S. for our melanoma tests. Turning now to our third business driver, new product development. There are supply chain constraints across our development programs related to sequencing flow cells. We are not certain when this issue will resolve or if it will worsen in the coming months. Luminate development has been modestly affected. We still expect to have the validation complete and the product available for introduction in Q1. We originally planned for an introduction of Luminate in late Q4 with a broader marketing push in Q1 after the December holiday rush, so this delay does not materially affect our plans for a broader DTC effort in Q1 and throughout next year. We are currently pleased with the performance of the product and its ability to assess ultraviolet damage to key driver genes associated with skin cancer and photoaging. We also plan to pilot a direct selling effort to dermatologists. In this model, a dermatologist would acquire Luminate and sell it to patients to guide treatment decisions. There are several variables we need to understand about this model that need to be resolved in the pilot program before rolling this out more broadly into our commercial team. Carcinoma CLASPER verification is progressing as planned, and we have completed enrollment in the validation study cohort. We have been able to manage the supply chain impact to this program thus far and as soon as the verification effort is complete, which is targeted by year-end, we will look to validate the CLASPER with expected completion by mid-2022, pending any changes to the supply chain issue. Lastly, our effort in precision therapy for atopic dermatitis continues to scale up, and we expect to have all 24 sites enrolling in the study by year-end. We had a modest increase in our enrollment percentage, which was affected by various COVID factors already discussed, and we expect enrollment will accelerate as more sites come on board. Our contract revenue was light again this quarter due to the slowdown in activity for inflammatory drug trials related to COVID. Recently, we have had more engagement from companies looking to deploy our platform into their development programs, and we expect to have some new contracts before the end of the year. While the third quarter presented ongoing challenges related to the pandemic, we believe the table is set to support the long-term growth of DermTech. Reaching full commercial scale with sales reach across the entire U.S. is an important milestone for us, and one that has been delayed for many quarters. Our vision is to lead the genomic revolution in dermatology and skin health, and we now have the infrastructure to make this reality. Now I'd like to turn the call over to Kevin to go over our financial results. Thanks, John. Total revenues for Q3 of 2021 increased 122% to $3.0 million, compared to $1.4 million for the same period in 2020. Assay revenue for the third quarter of 2021 increased 140% to $3.0 million, compared to $1.2 million for the same period of 2020. We continue to see improvements to our ASP in Q3, but our potential assay revenue that could be recognized from having broader payer coverage is still meaningfully higher than the actual reported revenue. Billable samples for the quarter were approximately 11,720, compared to approximately 6,700 for the third quarter of 2020, or a 75% increase, and was sequentially flat compared to the second quarter of 2021. Medicare samples represented about 22% of our billable samples in Q3 of 2021, compared to approximately 17% in the same period of the prior year and 19% in Q2 of 2021. Our Medicare proportion of samples is now recovering from the pandemic low point. However, however, additional growth in our Medicare proportion could be impacted by future pandemic conditions. With approximately 2,400 unique ordering clinicians during the last twelve months, we penetrated 48% of our initial target market of approximately 5,000 dermatology clinicians who account for a high concentration of the total annual surgical procedures to diagnose melanoma. This translates into a 25% penetration of our expanded initial target market of 9,000 to 10,000 dermatology clinicians and penetration of about 18% of the 13,000 total practicing dermatology clinicians. We had approximately 1,590 unique ordering clinicians in Q3 of 2021, compared to approximately 950 in Q3 of 2020, or a 67% increase, and compared to approximately 1,430 in Q2 of 2021, or an 11% sequential increase. Our average quarterly utilization or average number of tests ordered per unique ordering clinician remained strong and was 7.4 billable samples in Q3, compared to 8.2 in Q1 and 7.8 in Q1 of 2021, and 7.0 in Q3 of 2020. As expected, overall utilization did vary and declined slightly as we added more new accounts, since new users typically order less per month when they first start using our melanoma test. We still expect our total billable sample volumes to increase as potential lower utilization rates are offset with a higher number of overall ordering clinicians. Contract revenue decreased 41% to $76,000 for the third quarter of 2021, compared to $129,000 for the same period of 2020. As of September 30, 2021, we had a maximum of $4.2 million in potential remaining contract revenue related to our current agreements. Gross margin for Q3 of 2021 was 4%, compared to -18% for the same period of 2020. The increase in gross margin was largely driven by higher billable samples and assay revenue during Q3 of 2021. Assay gross margin for Q3 of 2021 was 3%, compared to -29% for the same period of 2020 and 11% for Q2 of 2021. Sales and marketing expense increased 114% to $9.8 million for the third quarter of 2021, compared to $4.6 million for the same period of 2020, primarily due to additional headcount for the commercial teams and additional marketing investment, including digital media, direct-to-consumer advertising, and professional promotion. We expect sales and marketing expense to continue to increase as we recognize the fully burdened cost of our expanded sales force for the full reporting periods due to increases in our marketing initiatives to raise awareness of our technology. Research and development expense increased 173% to $4.4 million for the third quarter of 2021, compared to $1.6 million for the same period of 2020. The increase was primarily due to higher compensation-related costs, increased clinical trial costs and additional lab supplies. We expect R&D expense to continue to increase as we ramp up our pipeline development efforts. General administrative expense increased 111% to $6.2 million for the third quarter of 2021 compared to $2.9 million for the same period of 2020. The increase was primarily due to higher payroll-related costs and higher stock-based compensation and higher audit and legal costs. We expect our general administrative expense to continue to increase as we implement systems and infrastructure to support our direct-to-consumer efforts and overall growth. Net loss for the third quarter of 2021 was $20.1 million, which included $3.7 million of non-cash stock-based compensation, offset by $0.2 million of benefit related to a non-cash change in fair value of the warrant liability, compared to a net loss of $9.3 million for the same period of 2020, which included $1.4 million of non-cash stock-based compensation, offset by $0.1 million of benefit related to a non-cash change in fair value of the warrant liability. At the end of the third quarter, our cash equivalents, restricted cash, and marketable securities totaled $252.5 million. We are revising our full-year 2021 assay revenue guidance to be between $10.5 million and $12 million, mainly due to the impact of the Delta variant and Hurricane Ida. We still saw some softness in October, and while the first week of November has picked up nicely, we have some lingering concerns about physician access and the holiday season with continued pent-up travel demand. If early November trends are sustained, we could still fall within the lower end of our prior guidance range. Our revised guidance still represents solid growth of 148%-183% over 2020. As John mentioned, we believe we can continue the similar trajectory in 2022. We're excited about our sales force expansion, the progress of our integrated primary care network pilots, and the expansion of our telemedicine efforts beyond Florida and with partnerships. We believe we have built the appropriate infrastructure to drive growth in 2022 and beyond. Now I'll turn the call back to the operator for questions. Thank you, Kevin. Ladies and gentlemen, if you have a question at this time, please press the star, then the one key on your touchtone telephone. If your question has been answered or you wish to remove yourself from the queue, please press the pound key. Now our first question is coming from Brian Weinstein of William Blair. Go ahead, sir. Hey, guys. Good afternoon, and thanks for taking the question. Brian. Hey. I thought we'd just start out kind of following up on Kevin's closing comment there and some of the stuff you were talking about, John, in your prepared remarks. As we think about 2022, because I think at this point in the earnings season, everybody should be well aware of all the trends that were going on in Q3 and how that's impacting Q4 across the board. As we try and keep a forward focus here and we think about 2022, maybe you can just go back over some of the key drivers that are really gonna drive this because I thought I heard you say that you expected a doubling of volume this year and that you expected that similar trend to continue into next year. I wanna make sure I heard you say that as sort of the trajectory we should be thinking about and things that, I guess, have you the most excited about 2022 and the growth opportunity. Yeah, that's exactly it. I mean, as I said, you know, we'll approximately double this year, and we expect that trend to continue next year. I believe that it will accelerate. I'm extremely positive about 2022 because we finally achieved that scale-up of our sales team. I think that's gonna be the biggest driver of the progress of the business is our effort within that dermatology sales channel. We just got a fantastic sales force that we've put together. They all have terrific pedigrees and terrific success as sales reps. We're very optimistic about what they're gonna do. You know, we're also making progress as we talked about against the primary care networks. While at this point, we don't quite know what the utilization rate is within the primary care channel, and we don't quite know how many reps we need to call on a certain number of primary care docs to generate that utilization, we do think there's a big opportunity there, and we'll continue to push on that. I think that represents, you know, further upside over what we think we'll do within that dermatology professional channel. Great. Just to kind of follow up on that primary care opportunity, can you just talk about the process to get involved there? You talked about the one in Florida. There's one, it sounds like in my neck of the woods here in the Midwest. You know, what does that process look like and what are they looking for in order to sort of endorse bringing on the technology and then to have your sales force go on and then try and sell it? You know, it starts out, it really starts out as an executive level sell. You really kind of go in at the top, and you need to get some buy-in at the executive level, which is typically the issue we've talked about, where these primary care networks have a real pain point associated with outside referrals to dermatologists. It costs them money, and there's not a lot of access. If we get a buy-in from the executive level, then it goes to a clinical review and they review our, all of our data. If that looks good, they then ask to do a pilot. Those pilots, they typically want to understand that the test doesn't really interfere with the overall patient flow and traffic and ability of the primary care doctors to To see the patients that they need to see every day. They also obviously look for the feedback from the primary care physicians about how they feel about the product. If that's successful, then it moves to stage where we can essentially get what we call sort of a license to hunt, which means we can go and offer the test to all of the or some number of the physicians within that network. The technology integrations will occur as that process is occurring. These folks all like to live off their electronic medical records, and so we then will proceed with that technology integration, and that's the process we've gone through with that Florida network and the others we're in discussions with. Yeah. There are several that you're talking to there, correct? We're developing a very nice pipeline of those opportunities. We do have somebody who is focused solely on identifying those opportunities and initiating the discussions at that executive level, and she is developing a very nice, robust pipeline of those opportunities. Okay. The last one for me, if I can just squeeze one in here, is on the sales force. It sounds like you have finally kind of the numbers that you're looking for in the high quality sales force. How do you manage kind of, you know, splitting of territories that's gonna be going on and just sort of manage the rollout here of these new reps and ensure that you get sort of maximum productivity when they really start hitting the road here in the first quarter? Yeah. As you're aware of, any time you're doubling a sales team and splitting territories, there's a lot of distraction associated with that effort, the hiring and the training. Then, you know, as territories get split, that means the rep in the existing territory, you know, is focusing on a smaller subset of the doctors. We feel like we can manage that. Obviously, that is a factor that we have to take into account in things, how things are going. We will manage it effectively. The big thing we're doing right now is training those sales reps up, and they're getting mentored by the other sales reps. That's really the best way to get them trained up. That's why when we really look to their contributions going to occur in starting Q1, that they're gonna spend this whole quarter. They really just started in October, so it's gonna occur in the Q1 after they go through this training and mentorship program with the existing reps. Then we'll be through all the distraction and the disruption you're talking about that occurs when you scale up a sales team. That should all be behind us and we'll be hitting the ground running in Q1 of 2022. Great. Thanks for taking the question. Thanks, Brian. Our next question is from Max Masucci of Cowen and Company. Go ahead, sir. Hey, John and Kevin. Thanks for taking the questions. Max. Can we start on the TRUST Study? Great to see the data published in SKIN in mid-September. I think we're about two months removed from publication. I'm sure you've only discussed the final results with a fraction of the payers on your radar. It would be great to hear how the results have been received in some of your early discussions. You know, you don't get a lot of feedback from the payers when you provide them this information. You know, I think we've had one or two payers basically say that they do like the data. They think the data is solid. We think that's encouraging, and we're hopeful that we'll start to push them over the edge. You know, as you guys know, the payer process is very opaque. You provide them information, you don't always get a lot of feedback exactly what they're thinking. We do think we're making progress in general with the payers. We do have an audience with them, which is something I couldn't say before, and we are educating them about the test, and we feel like we're getting some of the clinical teams to understand the problem and get behind the test. That's why we're optimistic we're gonna make more progress with the payers in the coming quarters. Great. Maybe two quick ones for Kevin. First one, I think it would just be helpful to understand, you know, a breakout in terms of the regional impact that we could see in Q4 from, you know, the remnants from Ida. You know, the impact of the Delta variant on volumes and, you know, any expectations for, you know, how the ASPs trend sequentially, just, you know, to get a bit more detail around, you know, how we can sort of bridge, you know, from the guidance we have today to even, you know, the low end of the prior range. We've previously mentioned that a big concentration of our current sample volume was in the Sun Belt states. That includes the South, you know, think Florida, Texas, but as well as states like California and then bigger states like New York. Those big states with large populations still remain, you know, big states for us in terms of sample volume. What we mentioned before on the call was that Louisiana was literally one of our fastest-growing territories. We hired a really good sales rep there who had some good relationships and was able to really drum up the interest and find a model that worked of getting the demand from the various physicians on tap. With Ida specifically, that, you know, ran right through Louisiana. You know, the example we gave on the prepared remarks was one of our largest customers had their practice destroyed. That's just one example. There's others within it as well that, you know, is the lasting impact. That's why we say, it could continue to affect us within Q4 and potentially beyond, 'cause it's hard to say how long some of these things can rebuild. That being said, what we do expect, though, is now that we have a broader sales force that goes and essentially covers the entire U.S. These regional type factors will be hopefully less impactful in the future. For Q4, you know, we would still expect some potential headwinds related to Ida. Again, because Ida ran up through, you know, the Northeast and there was the flooding situations, those areas have recovered a little bit better than some of the places in the South. From an ASP perspective, again, we still expect a sequential improvement within ASPs, but it will be lumpy. How much ASPs improve over time, that's one of the hardest things to model. We are focused on the key drivers for how we can improve ASP growth, including driving proportion of samples through our covered contracts, both Medicare and the commercial contracts where we have coverage. Again, that's the one that's really hard, because if we get some other payers on board, that can help. As we improve the proportions within covered territories, that'll help. Again, we do expect ASPs to kind of trend up slightly, probably within Q4 and then throughout 2020. It's just the rate is hard to definitively say. Max, I would just add to that. You know, the thing that concerns us about the fourth quarter is we got hit so hard with the vacations through August and September, and we had mentioned that on the prior. We weren't sure if there was seasonality, but there was clearly pent-up vacation demand. We're hearing similar things about people wanting to get together for the holidays. That's the only thing that gives us some pause about the rest of the fourth quarter. Not the only thing, but one of the things that's driving our thinking about fourth is we just don't know how to forecast that right now because it was so you know, strong in that August-September timeframe. We're just... With all these holidays coming up and now kids can be vaccinated, people wanna take a visit to the relatives, we're just worried that that may have an impact. That's why we're being conservative about how we look at the rest of this quarter. We just don't wanna lose credibility with you guys by, you know, by not telling you what's really happening on the ground, and those are the things that we're thinking about. Yeah, absolutely makes sense. DermatologistOnCall, you know, when does that officially kick off? Is it Q4, or does that kick off at the beginning of next year? You know, access to 20 million patients is fantastic. Curious, you know, depending on when that kicks off, if there's anything you can do to, you know, to hit the ground running and any opportunities for, you know, joint marketing maybe with, you know, with that partner to really, you know, drive penetration in that channel. Yeah. We are going live with that DermatologistOnCall relationship now. We're training up their doctors. It's gonna take the rest of the quarter to get through all of their 100 or so dermatologists that are in their network, but we are starting that now. Their covered lives benefit is really kicking in in 2021, and that's where we would, you know, see that exposure to those 20 million covered lives starting in 2022. You know, right now, because the only way to really assess an atypical mole is with a surgical biopsy, I would say the proportion of visits for teledermatology for suspicious moles is a lower proportion. I think with marketing and now understanding there is a true virtual care option where you can now have a test in the home, we're gonna work to kinda increase that overall proportion. That'll take some time, but that's something we'll be working on, you know, throughout the year with DermatologistOnCall and getting access to the folks that they will have their service as a benefit. Then our own efforts that we'll be doing with our, you know, with our Find a Doctor page and offering that telemedicine option to the patients that come to our Find a Doctor page. We've already gotten our first samples in from that partnership or that relationship actually this week. Even though as we're going through the training protocols, again, it's live right now and it's gonna help contribute. It will, like John said, take a little bit of time to ramp up, but again, we're very optimistic in what that relationship can do for us. Great. Thanks for taking the questions. Our next question is from Sung Ji Nam of BTIG. Go ahead. Hi. Thanks for taking the questions. Maybe one for Kevin. For gross margins, obviously you guys are seeing improvement there, year-over-year and also year-to-date, year-over-year. Was curious about sequentially. You know, it's declined especially for the 50 gross margins. If there is any one-time impact, you know, contributor there, or, you know, what's kind of driving the sequential decline? We were staffing up in anticipation of some additional growth. Obviously, Delta had impacted that growth. I'd say from a fixed costs perspective, it was relatively flat over Q2. We just had some additional variable costs related to some headcount. Scientists in San Diego, they're in high demand because of just the biotech industry within San Diego. When we find good scientists and labs people, lab team members, we'll go and get them because, again, we'll know that we'll need their capacity here in the near future. We're also putting in some technology improvements within the lab infrastructure, which had a little bit of impact for the quarter in terms of some variable costs. That was really the main two reasons. Gotcha. That's helpful. John, you know, obviously you guys are making good progress with the Medicare portion of the test volume, despite the challenging market environment. I was curious, is there, you know, an incremental effort you're making with that population, or I'm just trying to figure out if it's just kind of the end market trend, you know, that you're essentially experiencing? Well, you know, we think it's hard to put exactly the reasons behind it. We think, you know, as the Medicare population has gotten more vaccinated and they are more out and about living their lives. That could be a factor that's contributing to that rising proportion 'cause for so long they were kind of staying away from places like the dermatologist. That could be a factor. We are more broadly marketing the test digitally to that patient population, so that could be helping a little bit. It's hard to put an exact number on it, but not an exact reason behind it, but we're pleased with it and we've seen this trend now every quarter going up. We expect that to continue to make improvements there and it is a key focus for us. Gotcha. Great. Just lastly for me, first time hearing about supply chain constraints on the sequencing flow cells, and so was wondering if you know, you have a sense of when that might be addressed, if you're hearing anything from the supplier as far as when that might normalize for you guys? That's really been hard to tell. We just can't get enough. Even when we went to our outside suppliers of these services, our contract providers of sequencing services, they're having trouble too. Their lead times are extended for the same reason. You know, we're not quite sure. We know where they come from. They come from overseas, so maybe they're stuck, you know, at the Port of Los Angeles or something. It's hard to say. It's just we've got big orders for those and we're only getting onesies and twosies right now. They're trying to work with us to get as many as possible, but what they tell us, they just don't have the flow cells. It's just been a hang-up that slowed things down a little bit, you know, as we validate that Luminate product. Again, right now, not an impact on the Carcinoma. You know, we're hopeful that it will be resolved, and we're still optimistic that that product will also be done by mid-2022, despite that near-term kind of supply chain issue with flow cells. I think the JP Morgan analyst wrote about this a while back ago, you know, Illumina's challenge with flow cells, but maybe a month ago, and then we started experiencing that. Great. Thank you so much. Okay. Thank you. Ladies and gentlemen if you have a question at this time please press star then the one key on your desktop telephone. And now our next question is from Alex Nowak of Craig-Hallum. Go ahead, Alex. Greg, good afternoon, everyone. Is the refined sales approach and the new branding strategy here resonating where you're not trying to fully replace a biopsy anymore and really teaching the clinicians to think about DMT as more ancillary and an alternative to watchful waiting? Is that helping the conversation at all with either new or the existing clinicians? Yeah, absolutely. You know, I think that we spent a lot of time working on the messaging and refining it and we've been rolling out that new messaging out with our existing sales reps, and that's obviously going into the hands of the new sales reps. You know, the general starting message is, "Hey, we're not here to take away your biopsy. We're here to help you with these lesions that you can't biopsy for a variety of reasons." That just sort of takes down the general concern that the doctors may have about that and it opens up the conversation much better. In general, we've tightened up all the marketing messaging. You know, we've gone to a consultative selling model with MSL support, et cetera. I think all those things are part of just the refinement of our commercial strategies and planning. We expect those things to pay off as now that we've got a full commercial team. Well, just hoping to understand more about the Intercenter ramp here. Of the new ordering clinicians, I mean, can you quantify how many of these are ordering 10 or more samples or whatever you consider to be high volume users out there? Just how quickly does a new clinician go from an initial user to a high volume customer? Yeah. We haven't disclosed the breakouts of the various utilization buckets yet. But as you can imagine, you know, again, as the new clinicians come on board, you know, they start out in those first two buckets, which we call the dabblers, one to two a month, and then the mid-tier, which is three to nine a month. We've been measuring that and it's kinda varied, right? How quickly do they go from the lower tier buckets to the higher tier buckets? I'd say it's varied and it's really tied to their experience, right? If the clinician who's ordering the test, you know, if they start seeing these things where it's really just eye-opening, where, you know, they didn't think something was super suspicious, but they used our test and lo and behold things come back as positive, that gets them kind of acknowledging the technology a little bit quicker. We don't have a good, you know, average type of number for all the use cases just because the pandemic has clouded some of these things. We haven't had the right access, the right repetition with the ordering clinicians to really make sure that they can ramp up and understand the technology as they're really starting to adopt and use it. It's something that we'll target disclosing a little bit more of the buckets and the timing of getting through the tiers in the future. We're just trying to make sure that the data we have during this pandemic environment is really clean and understood, and that we're not muddying the waters by just, again, putting out data that's just muddied by COVID right now. Yeah. No, that makes sense. The incoming sales team, would you rather have them go out there and try to drum up new clinicians? Or do you see a better maybe near term and maybe even midterm ROI by ramping the existing customers? Well, we expect them to do both, right? I mean, in the territory, there's gonna be some existing business if that territory was split, so we expect them to go after that existing business, and we also expect them to bring in new customers. I think before our territories were a bit larger, you know, 200 or 250 doctors per territory, which is a pretty heavy number for one sales rep to cover with the right frequency and reach. Now we're down to more like 100 to 125 doctors per territory, which now there's adequate frequency and reach within that group. We expect both of them to drive that business with existing customers, but bring in new customers. In general, though, our focus is now breadth, right? The pandemic focus to go deep. We're just trying to drive utilization within existing accounts. Now that we're fully scaled up and the pandemic is starting to wane, we wanna go broad, and we wanna bring on as many users as we can, as we get that broad group of users on, then drive that utilization over time within that broader group of users. Yeah. For, I mean, half of that, probably about half of the new reps or so, you know, are really getting dropped into brand new territories. The expectation for them is the majority of what they're doing will be to get a breadth of new customers on board. You know, again, we also have some other customers who might have ordered a while ago and just haven't ordered for a little bit, so it gives us an opportunity to get back in front of them. 'Cause again, we know dermatology is a frequency and repetition type of specialty, where if you don't have frequent sight of contact with them, then they might forget about it and just not order as much or even potentially stop ordering. We wanna kinda have the new reps do all of those efforts. Okay. Yep, that makes sense. Just lastly, how are you thinking about other dermatology assets to add on here and strengthen the infrastructure? You know, generally thinking about, for example, MetaOptima's technology they use in DermTech Connect. Is there anything else that you could, you know, add on here to help fully integrate this for clinicians? You know, I guess we do have a big push right now to do the electronic medical records integration. We're working with EMA, and that's going very well. We're rolling that out to more and more clinicians every quarter. That's been going on for the last couple quarters. We think that's another important piece to facilitate and streamline the ordering of the test. That will continue. We haven't identified any other ancillary technologies in the near term that we wanna necessarily own or bring in-house. We think that, you know, it's more important just to focus on our platform, and we've got a lot of work to do and a lot of upside from where we are today in penetrating the markets we have. We got a deep pipeline of products. We need to get the job done with those before we worry about bringing on a lot of other things that could represent more distraction. That's really our focus. We don't have any plans in the near term to bring anything new in. Yeah. In addition to what John mentioned in the prepared remarks, so the integrated delivery networks that we have, they can use various types of EMRs. Even though we're integrating currently with EMA, the other couple of pilots that are going on are using different EMRs. We'll have multiple EMRs that will do the integrations for both to facilitate their submissions of test requisitions. The second phase of those integrations will allow us to grab medical records, and that'll help with the appeal process that we need to do on the back end as well. Got it. Appreciate the update. Thanks. Our next question is from Thomas Flaten of Lake Street. Go ahead, Thomas. Hey, guys. Thanks for taking the question. Kevin, I just wanted to reuse the guidance for a second. On the low end would imply a pretty substantial downtick in testing volume in the fourth quarter. You know, it kinda sounded like there was some lingering effects of Ida, maybe some pandemic, maybe some vacations. The low end would imply kind of an acceleration in the breaks, if I can say it that way, that would shrink the business rather than just keep it flat. Can you just walk me through the conservatism there over what we saw in the third quarter? Yeah. In the third quarter, July was great. We came out of Q2 before Delta came about, and everything was really, you know, rocking on all cylinders. Then Delta came about, and again, August and September were the tough ones. As we start out here in October and November, October was again a little bit choppy, but as we mentioned, November has picked back up. To get to a flat Q4 over Q3, we still need some acceleration from where we are now. That's why we say, you know, because of the uncertainty around the vacation environment coming towards the holidays, we're just not quite sure of how it plays out. In addition to Ida, so Louisiana was the example, right? I mean, there's that one practice that we mentioned where who knows how long it takes them for them to rebuild, and that was one of the largest customers in that territory for our fastest growing territory. Some of the other impacts around the South, whether it's Florida or the other states in the South, they're still dealing with some of that, Ida cleanup as well. Again, I think it's just a matter of us being conservative and trying to make sure we capture the low end. Even though we might think that we're coming in, you know, above that, we just don't wanna, like John said, lose the credibility for some reason, things kinda slow down even more with any of those things or potentially even another variant, another wave of the pandemic comes at us. Many people are probably reading about the fifth wave going on in Europe right now, so it's hard to say what the impacts for us will be as winter approaches and people head indoors more. That's really all it is the low end of the new range. It's just really conservatism for, you know, where we think the bottom really is. Again, we do think we'll be ahead of that. It's just the things that we're unsure of and how it plays out. Got it. Then looking forward, for either of you, John or Kevin, as we think about a doubling of testing volumes in 2022 over 2021, can I just assume that any Luminate volume is not included in that and that would be upside? That is correct. Yeah, so when we talk about the trajectories for next year, we're talking about the DermTech Melanoma Test. Exactly. Just one final one, and I didn't catch it during the prepared remarks. Did you have a timing or thoughts on timing of the Optum publication? It'll be submitted before the year-end. The one thing we can't control is the peer review process. Sometimes that takes a couple weeks, sometimes it can take a couple months. We know the publication we're gonna submit it to. It should go in here, within a few weeks, and then we'll just have to see what the peer review cycle is. I suspect it'll be out there, if not by the end of the year, in the first part of the next year. Got it. Appreciate it, guys. Thanks. I'm not showing any further questions. Ladies and gentlemen, thank you for participating in today's conference, and this concludes today's program. You may all disconnect. Everyone, have a great day.