Thanks Mark. I'll begin by reviewing our LINZESS performance. LINZESS has been a resilient and growing brand in the face of COVID-19. As evidenced, by the strong patient demand during the quarter. Volume increased 9% year-over-year. And importantly, we have seen strong new-to-brand prescription growth, a key metric that predicts future growth and a good indicator for the overall health of the brand. Beginning in late March, at the beginning of the pandemic in the US, we saw a negative impact in new-to-brand prescription demand. Not surprisingly, fewer patients were going into their offices to see their physicians, coupled with our decision to pause in-person promotion, which resulted in fewer new patients receiving LINZESS. However, new-to-brand prescription demand began to rebound in late April and continued to strengthen throughout the remainder of the quarter. By June, average weekly new-to-brand volume had increased more than 15% compared to what we were seeing in early March. We believe this renewed demand in both total prescriptions and new-to-brand prescription can be attributed to a few key features. First, our sales force began gradually returning to physicians' offices and conducting in office and in-person details in certain territories for a portion of the quarter. We are pleased with the growth that we are seeing in areas of which the field has returned. Second, our latest DTC campaign Get Real was launched in early April. This campaign includes a strong call to action the patients suffering from IBS-C. It is our goal to help educate patients that they may be suffering for more than just occasional constipation, helping them to describe both the chronic abdominal and constipation symptoms, which we believe will encourage more patients to seek care and request LINZESS. The IBS-C category continues to experience remarkably stable growth in line with what we have seen in recent years, with nearly 40% market share as of the end of June, LINZESS remains the prescription market leader in the category. This strong position reinforces our confidence in our ability to drive growth now and over the next several years. Turning to 3,718, our gastric retentive bile acid sequestrant with the potential treatment of refractory GERD. As Mark highlighted earlier, we recently made key updates to our ongoing Phase III program that we believe reflect an important advancement for the two, 3718 trials. These updates are summarized on this slide. The first update was to change the primary endpoint to a continuous endpoint from a previous responder endpoint. We recognize that changing to primary endpoint in the middle of Phase III program was unusual. To be clear, our decision to do this was primarily due to the recent FDA guidance indicating a preference for a continuous endpoint over a responder endpoint in assessing clinical outcome. It was not because we had concerns over the original design of the trial. As we evaluated our 3718 program and in discussions with the agency. We designed these changes to maintain the scientific integrity of the trials without adding any additional risk to the program. The data from our Phase IIb trial supports this decision. The new primary endpoint is very similar to one of the previous key secondary endpoint and to the primary endpoint in our Phase IIb trial. With the change to the primary endpoint, we restructured the hierarchy of the key secondary endpoints, elevating the statistical prominence of regurgitation, one of the most bothersome symptoms in refractory GERD. The ability to treat regurgitation is a key benefit, we believe, will clearly differentiate 3718 as there are no current treatments available for regurgitation associated with refractory GERD. The second update, with our decision to stop enrollment of study subjects in the study 302 and conducted early efficacy assessment of the data. As a reminder, the Phase III program is comprised of two identical studies: study 301 and study 302. Study 302 is currently well powered and with the guidance from the agency for trials impacted by COVID-19, we have the opportunity to update an early indication on efficacy in this trial. We believe the decision to stop enrollment and conduct this assessment gives us the opportunity to make earlier and more informed decisions while not compromising the scientific integrity of the trial. An Independent Data Monitoring Committee or an IDMC is planned to assess the data from the trial using pre-specified criteria that are consistent with certain of the new primary and secondary endpoints. We, Ironwood, will remain blinded. The IDMC will make a non-binding recommendation to Ironwood based on the results that could have the following possible outcome. If the IDMC determines that the data met all pre-specified criteria, we plan to continue enrolling in study 301 and target reporting top line results from both trials in the first half of 2021. This outcome would increase our confidence that 3718 will successfully treat this population. Alternatively, if the IDMC determines that the data does not meet all pre-specified criteria, we would plan to unblind and analyze the data to determine whether there is a rationale to continue to advance 3718 or if we should stop the Phase III program altogether. We expect the outcome of this assessment to be reported in the fourth quarter. Lastly and as Mark already highlighted, we were pleased with the feedback from the agency indicating that we will not be required to conduct an additional long-term safety study in connection with the potential NDA submission. We view all of these updates as positive for our 3718 program. We are confident in the design of the new endpoints and we look forward to gaining an early indication of efficacy, all of which provides us with the opportunity for more informed and quicker decision making on the program overall. 3718 is a critical driver for our business. We believe, if approved, 3718 offers great potential for patients and for Ironwood. The highly symptomatic nature of refractory GERD and the ability of patients to self-identify, gives us confidence that 3718 may be an important treatment option for millions of adults in the US suffering from this highly bothersome disorder. In summary, we believe our GI portfolio remains in a strong position heading into the second half of the year. The strength of LINZESS, coupled with the advancement of 3718, an equally sized opportunity as LINZESS, we remain excited about our long-term growth potential and are confident in our ability to deliver outstanding value to patients and shareholders. With that, I'll turn it over to Gina to discuss the financial results of the quarter.