Thanks, Karina. Good afternoon, everybody, and thank you for joining us on our third quarter 2023 earnings call. This quarter marks a pivotal moment in Adaptive’s evolution. As we have previously shared, we have two compelling businesses in MRD and immune medicine. They are at desperate stages of maturity with different investment requirements, operating models and distinct value drivers. To maximize the full potential of each business, we have hired Goldman Sachs to assist with a review of strategic alternatives. We will provide clarity on the path forward by early next year. Why are we making this decision now? MRD is a pure play diagnostic business with strong modes supporting clonoSEQ’s established position as the gold standard in heme MRD. Its continued momentum and success will require a focused commercial execution to drive increased penetration in current and new indications, as well as further investments in operational scale to solidify its path to profitability. In contrast, immune medicine is now fully focused on drug discovery, supported by a major achievement this quarter with the discovery of a novel target multiple sclerosis. These data validate our target discovery approach in autoimmunity with the ability to unlock additional novel targets in multiple autoimmune indications. The combination of our drug discovery platform with Genentech in oncology and the discovery of this first novel autoimmune target gives us a clear path to successfully build a broad and differentiated therapeutics business. We are confident in the value these businesses can deliver to patients and shareholders and expect that this ongoing strategic review will yield the best path forward to maximize the respective potential in light of this process. And the evolution of our immune medicine business into a dedicated drug discovery model with line of sight to long-term value creation, we are updating total company revenue guidance for the year, to exclude revenue from the immune medicine business. However, as you will hear from Tycho, we will provide you with MRD guidance for the remainder of 2023. Importantly, we continue to drive operational efficiencies throughout the organization. We completed the lab move this quarter, which is essential for future margin improvement and we maintain a healthy cash position with about $371 million in cash on the balance sheet. Let's now take a closer look at our MRD business, starting with clinical testing on Slide 4. clonoSEQ clinical testing continues to generate record high volumes quarter-over-quarter. This quarter, volume grew 10% sequentially and 56% versus prior year to over 15,000 tests delivered. Growth came from all marketed indications with multiple myeloma as the largest contributor and the main growth driver. Ordering accounts and ordering healthcare providers grew 30% and 33% versus prior year respectively. Business in the Community segment grew 25% quarter-over-quarter, contributing 21% of clonoSEQ volume in Q3 versus 13% a year ago. Blood-based testing increased in all indications and grew 14% sequentially contributing 36% of all MRD tests. Included among the many presentations highlighting clonoSEQ data at ASH this year, will be new evidence demonstrating the prognostic value of blood-based clonoSEQ testing in myeloma. Speaking of data, in Q3, we saw two important new clonoSEQ data sets published, one in mantle cell lymphoma where clonoSEQ’s deep sensitivity at ten to the six was shown to have prognostic power and one in pH positive ALL, where clonoSEQ was favorably compared to the current PCR-based monitoring standard. Last quarter, we saw downward pressure on our ASPs driven by well understood factors. Actions we have taken to address these pressures are already beginning to contribute to positive ASP trends as we saw consistent month-over-month increases in Q3 and 3% overall ASP growth versus Q2. These positive trends, I'm happy to say are continuing into the fourth quarter. Our plan to further optimize ASP is focused on coverage expansion, growth in contracted lives, improvement in payer mix, and operational enhancements to improve collections. Specifically, we have invested in resources dedicated to claims management, transitioned the majority of our commercial payers to the new unique clonoSEQ CPT code and closed additional payer contracts and policy gaps. We are confident these and other plan initiatives will accelerate ASP growth for the next several years. In addition, Epic integration continues to progress. We launched our first site, UC Davis Health, this quarter, and we have four more sites that we anticipate launching by the end of 2023. We also have a vetted list of interested accounts and anticipate 20 to 25 sites integrated by the end of 2024. Revenue declined 4% in the quarter versus prior year, due to broader macroeconomic factors. Now, I'm actually looking at Slide 5 on MRD Pharma. Revenue declined 4% in the quarter versus prior year due to broader economic macroeconomic factors impacting the biopharma industry. Like many of our peers, we are seeing pressure from some studies pausing or slowing down, while companies re-prioritize portfolios and specific assets. This has resulted in lower sample volume across our portfolio perspective trials. Despite these transitory headwinds, the overall health of the business is strong with over a $190 million in backlog anticipated by year end. We launched an updated version of our ctDNA ssay for used biopharma partners in research and clinical trials for DLBCL. We plan to leverage the updated assay in our upcoming DLBCL, FDA submission and deploy it for clinical testing and studies in other heme malignancies. We also continue to add meaningful partnerships to our portfolio. This week, we announced a new translational agreement with BeiGene to measure MRD across its pipeline. In summary, the setup for MRD is solid. Execution to drive top line revenue growth, while improving cost efficiencies is essential to drive this business towards profitability by 2025. Turning to Immune Medicine on Slide 6. As mentioned earlier, we achieved a key milestone in the discovery of a novel druggable target in multiple sclerosis. This target was discovered based on our unique ability to accurately identify a specific set of TCRs that are found only in MS patients. This MS target sheds light on potentially new T-cell biology that may be the trigger to this devastating disease. It also validates our novel target discovery approach, which uses our established drug discovery platform. This discovery was accelerated by our ability to accurately identify T-cell signatures of disease, which is enabled by combining our improved machine-learning, AI model with models that we built with our partner Microsoft, and our existing TCR characterization capabilities. We're applying this exact same approach to discover novel targets in additional autoimmune disorders that we've strategically prioritized. Regarding our cancer cell therapy partnership with Genentech, this quarter, our early product development team has successfully built out a personalized process workflow flow, in South San Francisco under regulated conditions. With the key building blocks now in place, we're starting end-to-end testing that defines the foundation for future clinical readiness of our fully personalized process. In summary, we continue to make great progress in our target and drug discovery programs in cancer and autoimmunity. Our immune medicine business remains laser focused to execute on additional key R&D and future clinical proof points that drive meaningful value inflections. For our partners and wholly-owned drug discovery pipeline. With that, I'll now pass it over to Tycho. Tycho Peterson Thanks, Chad. Turning to our financials on Slide 7, total revenue in the third quarter was $37.9 million with 65% from MRD and 35% from Immune Medicine representing a 21% decline from the same period last year. The MRD business overall has been strong, driven by high volume growth of clonoSEQ. The total revenue declined in 3Q was primarily driven by a 61% reduction in Genentech amortization and a 14% decrease in MRD Pharma and Immune Medicine Pharma Services due to the biopharma headwinds that we previously discussed, partially offset by strong clonoSEQ clinical performance. MRD revenue grew 24% from a year ago to $24.7 million. clonoSEQ clinical was the main driver with test volume, including international increasing 56% to 15,072 tests delivered from 9,649 tests in the same period last year. MRD Pharma declined 4% and no milestones were recognized in the quarter. Immune Medicine revenue was $13.3 million, down 52% from a year ago with lower Genentech amortization driving 85% of the decline. Immune Medicine Pharma Services, which saw 29% decline versus the prior year also experienced downward pressure from biopharma. Moving down to P&L on Slide 8. Total gross margin for the quarter was 49%. The decline in gross margin versus the prior year was largely attributable to lower amortization of the Genentech upfront, which has 100% margin contribution and incremental one-time costs from the lab moves. Versus the second quarter, the decline was mainly driven by no milestones compared to the Genentech milestone we realized last quarter in addition to product mix tied to reduced pharma services and incremental costs from completion of the lab move. We continued to focus on optimizing operations to further enhance margins. This includes the implementation of a new LIMS ecosystem by mid-2024, which will allow us to reduce overhead and increase the productivity of direct labor in the lab. In addition, after completing a technical feasibility review, we will be switching from m NextSeq to NovaSeq sequencers next year. We expect completion by late 2024, bring significant savings and material costs in 2025. Importantly, other OpEx, excluding cost of revenue declined 11% versus the prior year and 12% versus the prior quarter as we continue to be laser-focused in driving operating leverage and efficiencies across the organization. Interest expense from our royalty financing agreement with OrbiMed $3.7 million, which was offset by interest and other income of $4.3 million. Net loss for the quarter was $50.3 million, compared to $45.3 million last year. We ended the quarter with approximately $371 million in cash, equivalents and marketable securities. Now, turning to updated guidance on Slide 9. As Chad mentioned, given the ongoing strategic review, we are updating total company revenue guidance for 2023 to exclude Immune Medicine revenue. Going forward Immune Medicine will resemble a more traditional drug discovery biotech model and we want to ensure that we do not trade-off short-term revenues for long-term value and accordingly, we will not be providing revenue guidance for that business going forward. For MRD, we continue to expect clonoSEQ test volumes to grow over 50% for the full year versus 2022. ASPs in the fourth quarter are expected to grow mid-single-digits sequentially. We expect pharma services to continue experiencing downward pressure from biopharma industry spending in the fourth quarter and MRD milestones are expected to be in the low-single-digits. Putting it together, we expect total MRD revenue for 2023 to be in the range of $100 million to $105 million. As we continue to drive operating efficiencies, our total company full year OpEx target, including cost of revenue, is expected to be around $375 million, a decrease of approximately 3% from last year. Cash flow for the third quarter was $46 million, and higher than anticipated due to the lower pharma service revenues, but we expect the 4Q burn to be more normalized at around $35 million. Q3 had important achievements in both businesses, and we remain focused on driving execution, while managing our spending prudently, as we closed the year and complete the strategic review. I'll now turn the call back over to Chad.