Thank you, Kamil. Good afternoon, everyone, and thank you for joining us today for our Q1 call. I will start with a brief update of our business highlights and then touch on a few of our clinical development programs. Then I'll hand it off to Stuart Shanler, our Chief Scientific Officer, who will review our clinical development plans and time lines. Jeff Wayne, our Interim Head of Commercial, will then address our commercial business. After which, Frank Ruffo, our CFO will review our financial results. Following our prepared remarks, we will open up the line to take your questions. Dr. David Gordon, our Chief Medical Officer, will also be available during the Q&A portion of the call. Starting with commercial. Today's earnings release highlights our first full quarter results including RHOFADE. RHOFADE net revenues for the first quarter were $3.7 million. We were very pleased with the RHOFADE prescription trajectory during the relaunch, particularly when our field force was operating at about 80% capacity for most of the quarter. As you might expect, with our new focus on RHOFADE, which is a medical dermatology product, it was anticipated that we might see some turnover in the sales force particularly amongst the more esthetically focused sales reps. I am pleased to report that over the last four months RHOFADE has been detailed in the field, the initial feedback from both physicians and patients has been very positive. Total prescriptions for RHOFADE for the rolling four-week period ended April 19th were more than 7,000 for the first time for any rolling four-week period since mid-December according to the IQVIA Xponent data. I believe this trajectory is a credit to the strength of the brand, the market need and importantly, the execution of the commercial team. As a reminder, our goal is to get back to a monthly TRX run rate of 10,000 by the end of the year. As stated on our last earnings call, we continue to focus our sales efforts and resources on RHOFADE, which is in the primary detail position. Regarding ESKATA, for now, it remains in the second detail position with a field focus only on productive accounts. Now turning to our pipeline and a few items to note. We have an exciting and busy year ahead of us, as we expect to report safety and efficacy results from multiple Phase II clinical studies of our clinical development candidates for the treatment of alopecia areata, both the milder and severe forms; androgenetic alopecia, also known as male/female pattern baldness, atopic dermatitis and vitiligo and also Phase III studies for the treatment of common warts. As a reminder, we are the only company developing both topical and oral treatment options for patients suffering from alopecia areata. As is the case in many other dermatology indications such as psoriasis and atopic dermatitis, it is important and typical to have both options available to appropriately address patients with all types of disease severity, whether it’d be mild, moderate or severe disease. To fully characterize the potential treatment regimens for all alopecia areata patients, we have taken the following approach. We have designed our studies to allow enrollment of patients with a broad spectrum of disease severity in both our oral and topical trials. We have also provided an opportunity for our oral patients to roll into an open label extension phase of the trial where they can receive topical treatment for an additional six months. We have also allowed those in the six-month topical study to remain on treatment up to an additional six months through the same open label extension study. We maintain that the relative risk/benefit profile of the topical versus an oral is an important consideration in this class and we look forward to sharing this data in the coming months. More recently, we submitted an investigational new drug application for ATI-450 for the treatment of rheumatoid arthritis. This will be the first internally generated drug candidate from our small molecule technology platform to enter the clinic. We expect to begin a Phase I trial, including single and multiple dose administrations in approximately 80 patients in the second half of 2019. If we successfully complete the trial, we expect to advance ATI-450 into Phase II trials in patients with rheumatoid arthritis as well as in additional inflammatory indications. As a reminder, ATI-450 is an investigational oral compound that targets the production activity of TNF alpha, IL-1, IL-6 and IL-8. These are all cytokine targets of established biologic drugs. If successful, we believe ATI-450 would be a potential therapeutic option for a broad array of inflammatory indications, including rheumatoid arthritis, psoriasis, CAPS pyoderma gangrenosum, hidradenitis suppurativa inflammatory bowel disease and even oncology. This advancement of our first internally generated drug candidate to IND ushers in a new era for Aclaris. Over the last two years, along with our colleagues and team in St. Louis, we have established an internal small molecule drug discovery and development capability which allows us to generate novel drug candidates and drive them through preclinical development and into the later stages of clinical development. Our institutional knowledge in kinase inhibitors, our biology and chemistry expertise and our connect technology platform combine to allow us to efficiently develop new drugs in the inflammation immunology space and ATI-450 is the first such candidate. I will now turn it over to Dr. Stuart Shanler, our Chief Scientific Officer, who will provide an update on our other clinical activities and programs. Stu?