DiaMedica Therapeutics Announces Date for the Release of Full Year 2018 Results and Conference Call

On March 18, 2019 DiaMedica Therapeutics Inc. (Nasdaq: DMAC) reported that its 2018 financial results will be released after market close on Tuesday, March 19th (Press release, DiaMedica, MAR 18, 2019, View Source [SID1234534426]). DiaMedica’s management will host a live conference call on Wednesday, March 20th at 8:00am Central Time to provide a business update and discuss the Company’s financial results.

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Conference Call details:

Date: March 20, 2019
Time: 8:00 AM CT
Web access: View Source
Dial In: (866) 962-3593 (domestic)
(630) 652-5857 (international)
Conference ID: 6773627
Listeners should log on to the website or dial in 15 minutes prior to the call. The webcast will remain available for play back on our website, under investor events and presentations, following the earnings call and for 12 months thereafter. A telephonic replay of the conference call will be available until March 28, 2019, by dialing 1(855) 859-2056 (US Toll Free Dial In), (404) 537-3406 (international), replay passcode 6773627.

Moleculin Biotech, Inc. to Present at the Oppenheimer 29th Annual Healthcare Conference and the 31st Annual ROTH Conference

On March 18, 2019 Moleculin Biotech, Inc., (NASDAQ: MBRX) ("Moleculin" or the "Company"), a clinical-stage pharmaceutical company focused on the development of oncology drug candidates, all of which are based on license agreements with The University of Texas System on behalf of the MD Anderson Cancer Center, reported that Walter Klemp, Chairman and CEO and Jonathan Foster, Chief Financial Officer, will present at the following investor conferences (Press release, Moleculin, MAR 18, 2019, View Source [SID1234534425]):

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Oppenheimer 29th Annual Healthcare Conference – Management will present on Wednesday, March 20, 2019 at 3:20 p.m. ET. The Conference will be held at the Westin New York Grand Central Hotel in New York City.
31st Annual ROTH Conference – Management will be available on Monday, March 18, 2019 for one-on-one meetings with investors. The Conference will be held at the Ritz-Carlton Hotel in Dana Point, CA.

Mustang Bio Reports Full-Year 2018 Financial Results and Recent Corporate Highlights

On March 18, 2019 Mustang Bio, Inc. ("Mustang") (NASDAQ: MBIO), a clinical-stage biopharmaceutical company focused on translating today’s medical breakthroughs in cell and gene therapies into potential cures for hematologic cancers, solid tumors and rare genetic diseases, reported financial results and recent corporate highlights for the full year ended December 31, 2018 (Press release, Mustang Bio, MAR 18, 2019, View Source [SID1234534424]).

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Manuel Litchman, M.D., President and Chief Executive Officer of Mustang, said, "2018 was a transformational year for Mustang that positioned the company for further exciting advances in 2019. We enhanced our pipeline of therapies in August by adding a clinical-stage lentiviral gene therapy product candidate with curative potential for X-linked severe combined immunodeficiency ("XSCID"), for which we’re expecting compelling data to be published in a major medical journal this year. In June, we opened our cell processing facility in Worcester, Mass., which is now fully operational. We anticipate processing patients’ cells in the coming months under Mustang’s first IND—a significant milestone for the company. In December, the U.S. Food and Drug Administration ("FDA") granted Orphan Drug Designation to MB-102 (CD123 CAR T) for the treatment of blastic plasmacytoid dendritic cell neoplasm ("BPDCN"), a rare and incurable blood cancer. Most recently, in February we licensed an oncolytic virus (C134) that we plan to combine with MB-101 (IL13Rα2-specific CAR) to potentially enhance efficacy in treating glioblastoma multiforme. With these achievements, Mustang has built a strong foundation for success in the coming year."

Financial Results:

·As of December 31, 2018, Mustang’s consolidated cash, cash equivalents, short-term investments (certificates of deposit) and restricted cash totaled $34.6 million, compared to $41.3 million as of September 30, 2018, and $61.5 million as of December 31, 2017, a decrease of $6.7 million for the fourth quarter and a decrease of $26.9 million year-to-date.
·Research and development expenses were $21.1 million for the year ended December 31, 2018. This compares to $7.9 million for 2017. Non-cash, stock-based compensation expenses included in research and development were $3.4 million for the year ended December 31, 2018, compared to $0.7 million for 2017.
·Research and development expenses from license acquisitions totaled $3.4 million for the year ended December 31, 2018, compared to $12.4 million for 2017. Non-cash, stock-based compensation expenses included in research and development – licenses acquired were $2.1 million for the year ended December 31, 2018, compared to $9.6 million for 2017.
·General and administrative expenses were $6.8 million for the year ended December 31, 2018. This compares to $11.4 million for 2017. Non-cash, stock-based compensation expenses included in general and administrative expenses were $1.5 million for the year ended December 31, 2018, compared to $2.6 million for 2017.
·Net loss attributable to common stockholders was $30.7 million, or $1.14 per share, for the year ended December 31, 2018, compared to a net loss attributable to common stockholders of $31.3 million, or $1.24 per share, for 2017.

2018 and Recent Corporate Highlights:

·In May 2018, Mustang announced the publication of preclinical data in JCI Insight demonstrating that glioblastoma-targeted CD4+ CAR T cells mediate superior antitumor activity over CD8+ CAR T cells. The data, published by research partner City of Hope, will be applied in the ongoing Phase 1 trial of Mustang’s IL13Rα2-specific CAR T MB-101 in glioblastoma.

·In June 2018, Mustang opened a proprietary CAR T cell therapy manufacturing facility at UMass Medicine Science Park in Worcester, Mass. The facility will support the clinical development and commercialization of Mustang’s CAR T and gene therapy product candidates and enable proprietary cell therapy research.
·Also in June 2018, Mustang was added to the Russell 2000, 3000 and Microcap Indexes.
·In July 2018, Mustang completed a pre-Investigational New Drug ("pre-IND") meeting with the FDA for MB-102 (CD123 CAR T). Based on the meeting, Mustang expects to initiate a multicenter Phase 1/2 trial of MB-102 in acute myeloid leukemia ("AML"), BPDCN and high-risk myelodysplastic syndrome in the second half of 2019.
·In August 2018, Mustang announced that it entered into an exclusive worldwide license agreement with St. Jude Children’s Research Hospital for the development of a potentially first-in-class ex vivo lentiviral gene therapy for the treatment of XSCID, also known as bubble boy disease. The therapy is currently being evaluated in a Phase 1/2 multicenter trial in infants under the age of two. This study is the world’s first lentiviral gene therapy trial for infants with XSCID. The therapy is also being investigated in patients over the age of two in a second Phase 1/2 trial at the National Institutes of Health ("NIH"). The company believes these may be registration trials.
·In October 2018, Mustang announced that City of Hope initiated a first-of-its-kind Phase 1 clinical trial evaluating the safety and effectiveness of intraventricular delivery of CAR T cells to the brains of patients with HER2-positive breast cancer with brain metastases; the first patient was dosed in December 2018. In addition, Mustang announced that City of Hope dosed the first patient in a Phase 1 clinical trial of HER2-specific CAR T cells in treating recurrent or refractory grade III-IV glioma. The trial is evaluating the side effects and best dose of HER2-specific CAR T cells in treating patients with grade III-IV glioma that has come back or does not respond to treatment.
·In November 2018, Mustang announced that additional safety and efficacy Phase 1 data evaluating MB-102 (CD123 CAR) in relapsed or refractory AML and BPDCN were presented in an oral session at the American Association for Cancer Research (AACR) (Free AACR Whitepaper) ("AACR") Special Conference on Tumor Immunology and Immunotherapy.
·In December 2018, the FDA granted Orphan Drug Designation to MB-102 (CD123 CAR T) for the treatment of BPDCN.
·In February 2019, Mustang announced that it partnered and entered into an exclusive worldwide license agreement with Nationwide Children’s Hospital to develop an oncolytic virus (C134) for the treatment of glioblastoma multiforme. Mustang intends to combine the oncolytic virus with MB-101 (IL13Rα2-specific CAR) to potentially enhance efficacy in treating glioblastoma multiforme.

Alpine Immune Sciences Provides Corporate Update and Reports Full Year 2018 Financial Results

On March 18, 2019 Alpine Immune Sciences, Inc. (Nasdaq:ALPN), a leading clinical-stage immunotherapy company focused on developing innovative treatments for cancer, autoimmune/inflammatory, and other diseases, reported financial results for the year ended December 31, 2018 (Press release, Alpine Immune Sciences, MAR 18, 2019, View Source [SID1234534423]).

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"This was a year of continued execution for Alpine as we transitioned from a preclinical company to a development stage company, dosing earlier this quarter the first subjects in our Phase I healthy volunteer study of ALPN-101, our lead therapeutic for the potential treatment of autoimmune and inflammatory diseases. In addition, we continue to advance our lead oncology program, ALPN-202, preparing it for the clinic with the goal of filing an IND or IND-equivalent late this year," said Mitchell H. Gold, M.D., Executive Chairman and Chief Executive Officer of Alpine. "With our recently completed private placement of $25.3 million led by Decheng Capital, we are well positioned to achieve key catalysts later this year in both of our programs."

Recent Corporate and Clinical Highlights

First Subjects Dosed in Phase I Healthy Volunteer Trial for Lead Autoimmune/Inflammatory Disease Program, ALPN-101: On February 11, 2019, we announced the successful initial dosing of our first-in-human Phase I study of ALPN-101, a first-in-class dual ICOS/CD28 antagonist. The study is designed to evaluate the safety and tolerability of single- and multiple-ascending intravenous and/or subcutaneous doses of ALPN-101 in healthy volunteers. In addition, pharmacokinetics, pharmacodynamics, and exploratory biomarkers are being evaluated to help determine ALPN-101’s potential for the treatment of autoimmune and inflammatory diseases.

Completion of $25.3 Million Private Placement: On January 15, 2019, we entered into a securities purchase agreement for the sale of units consisting of shares of common stock and warrants to purchase common stock in a private placement providing gross proceeds to us of approximately $25.3 million. The private placement was led by Decheng Capital with participation from existing investors OrbiMed Advisors, Frazier Healthcare Partners, Alpine BioVentures, and BVF Partners, L.P.

Strengthened Board of Directors and Scientific Advisory Board with Recent Key Appointments:

Upon closing of our $25.3 million private placement in January 2019, Min Cui, Ph.D., Founder and Managing Director of Decheng Capital, was appointed to our Board of Directors. Dr. Cui’s focus at Decheng is on partnerships with entrepreneurs and building early stage biotechnology companies, and he currently holds Board positions at several companies. He has co-founded two companies, Pacific Pharmaceuticals and Hucon Biopharmaceuticals, where he led the research and development of key inflammatory and oncology therapies.
In addition, we appointed Vijay Kuchroo, DVM, Ph.D., Rafi Ahmed, Ph.D., James Welsh, M.D., Anne Davidson, M.B.B.S., and John Thompson, M.D. to our Scientific Advisory Board. They join a team of distinguished translational and clinical scientists in inflammatory and autoimmune diseases and cancers, including Scientific Advisory Board Chair Andrew Scharenberg, M.D., Manish Butte, M.D., Ph.D., and Paul Tumeh, M.D.
Key Preclinical Data Presentations at Medical Meetings: We showcased preclinical data for our lead programs, ALPN-101 and ALPN-202, at the following recent medical meetings:

ALPN-202 preclinical data presented at SITC (Free SITC Whitepaper): In November 2018, we presented preclinical data of our lead oncology program, ALPN-202, a PD-L1/CTLA-4 dual antagonist with PD-L1 dependent CD28 costimulation, at the Society for Immunotherapy of Cancer (SITC) (Free SITC Whitepaper) 33rd Annual Meeting in Washington, D.C. Data presented demonstrated the superiority of ALPN-202 over PD-L1 inhibition in a preclinical tumor model.
ALPN-101 GvHD preclinical data highlighted in oral presentation and posters at ASH (Free ASH Whitepaper) 2018: In December 2018, we presented positive results from multiple preclinical studies of our lead autoimmune/inflammatory program, ALPN-101, via poster presentation at the American Society of Hematology (ASH) (Free ASH Whitepaper)’s (ASH) (Free ASH Whitepaper) 60th Annual Meeting & Exposition in San Diego, CA. In addition, in an oral presentation, researchers from the lab of Indiana University School of Medicine’s Sophie Paczesny, M.D., Ph.D., one of our collaborators, found ALPN-101 significantly improved survival in preclinical models of acute graft versus host disease (GvHD) and highlighted the novel role of ICOS ligand in GvHD.
ALPN-101 GvHD preclinical data presented at 2019 TCT Meetings: In February 2019, we presented preclinical data for ALPN-101 GvHD at the 2019 Transplantation & Cellular Therapy Meetings of ASBMT and CIBMTR (TCT Meetings) in Houston, TX. Data presented demonstrated potent and dose-dependent suppression of GvHD in a human/NSG xenograft model, with activity superior to CD28 or ICOS single pathway antagonists.
Full Year 2018 Financial Results

As of December 31, 2018, we had cash, cash equivalents, and short-term investments totaling $52.3 million. Net cash used in operating activities for the year ended December 31, 2018 was $28.4 million compared to $16.6 million for the year ended December 31, 2017. We recorded a net loss of $36.5 million and $7.8 million for the years ended December 31, 2018 and 2017, respectively.

Collaboration revenue for the year ended December 31, 2018 was $705,000 compared to $1.7 million for the year ended December 31, 2017. The increase was primarily attributable to the timing of revenue recognized under our collaboration agreement with Kite Pharma, Inc., a Gilead (Nasdaq: GILD) company. As previously announced, under the terms of this research collaboration and license agreement, we received upfront payments of $5.5 million, which were initially recorded as deferred revenue and expensed over the period of the research term. The research term of the agreement with Kite was extended in October 2018.

Research and development expenses for the year ended December 31, 2018 were $29.0 million compared to $10.6 million for the year ended December 31, 2017. The increase was primarily attributable to an increase in direct research, contract manufacturing, and process development activities to support ALPN-101 and ALPN-202, plus increases in research personnel related to expanding research and discovery programs and associated overhead and facility costs.

General and administrative expenses for the year ended December 31, 2018 were $8.4 million compared to $6.1 million for the year ended December 31, 2017. The increase was primarily attributable to professional and legal fees and operating as a public company, in addition to personnel-related expenses and the costs associated with expanding the company’s operations as we accelerate preclinical activity.

Cash Guidance

We expect to have sufficient cash to fund operations into 2021, including the clinical advancement of our lead autoimmune/inflammatory program, ALPN-101, and our lead oncology program, ALPN-202.

About ALPN-101

ALPN-101 is a novel Fc fusion protein of a human inducible T cell costimulator ligand (ICOSL) variant immunoglobulin domain (vIgD), and a first-in-class therapeutic simultaneously inhibiting the CD28 and ICOS inflammation pathways. CD28 and ICOS are closely related costimulatory molecules with partially overlapping roles in T cell activation likely connected to multiple autoimmune and inflammatory diseases. In preclinical models of graft versus host disease, inflammatory arthritis, and multiple sclerosis, ALPN-101 demonstrates efficacy superior to blockade of the CD28 or ICOS pathways alone.

ALPN-101 was engineered using our vIgD platform, which uses directed evolution to transform native IgSF proteins into multifunctional protein therapeutics. ALPN-101 is currently enrolling a Phase I healthy volunteer trial.

Aclaris Therapeutics Reports Fourth Quarter and Full Year 2018 Financial Results and Provides Update on Clinical and Commercial Developments

On March 18, 2019 Aclaris Therapeutics, Inc. (NASDAQ: ACRS), a physician-led biopharmaceutical company focused on dermatological and immuno-inflammatory diseases, reported financial results for the fourth quarter and full year 2018, and provided an update on its clinical development and commercial programs (Press release, Aclaris Therapeutics, MAR 18, 2019, View Source [SID1234534422]).

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In November 2018, Aclaris acquired the worldwide rights to RHOFADE (oxymetazoline hydrochloride) cream, 1% from Allergan Sales, LLC.
In December 2018, Aclaris began promoting RHOFADE, which is approved in the United States for the topical treatment of persistent facial erythema (redness) associated with rosacea in adults.
In February 2019, at the annual National Sales Meeting, Aclaris appointed Jeff Wayne as interim Head of Commercial and officially relaunched RHOFADE.
Today Aclaris is providing an update, including new photos, from AUATB-201 Topical, an open-label clinical trial in patients with eyebrow loss due to alopecia areata (AA), including patients with alopecia totalis or alopecia universalis.
"On the commercial side of the company, we made a change in leadership as we focus on the relaunch of RHOFADE in 2019. Our development stage pipeline continues to advance with multiple data read outs expected during the course of the year across both our JAK inhibitor and A-101 clinical programs. Finally, we look to move our first Confluence originated asset into the clinic in the second half of the year; a significant milestone given we acquired and integrated the team just 18 months ago. Given the anticipated data readouts, we expect 2019 to be a watershed year as we become a fully integrated biopharmaceutical company," said Dr. Neal Walker, President and Chief Executive Officer of Aclaris.

Clinical Pipeline Update:

A-101 45% Topical Solution:
Two pivotal Phase 3 trials, named THWART-1 and THWART-2, for the treatment of common warts are progressing as planned. THWART-2 has completed enrollment, and THWART-1 is expected to complete enrollment by the end of this month. These two trials will enroll a total of approximately 1,000 patients across both studies, and topline data are expected in the second half of 2019.
An open-label safety extension trial investigating A-101 45% Topical Solution for the treatment of common warts is also ongoing; if the results of these trials are positive, NDA submission is expected in the first half of 2020.
JAK Inhibitor Trials:
We have completed enrollment in all of the following JAK inhibitor trials:
AA-201 Topical – This ongoing Phase 2 randomized, double-blinded, parallel-group, vehicle-controlled trial is evaluating the safety, efficacy, and dose response of two concentrations of ATI-502, a topical JAK1/3 inhibitor, on the regrowth of hair in 129 patients with AA. Data are expected in the second quarter of 2019.
AGA-201 Topical – This ongoing Phase 2 open-label clinical trial is evaluating the safety and efficacy of ATI-502, a topical JAK1/3 inhibitor, on the regrowth of hair in 31 patients with androgenetic alopecia (AGA), also known as male/female pattern hair loss. 6-month data are expected in the second quarter of 2019 and 12-month data are expected in the second half of 2019.
VITI-201 Topical – This ongoing Phase 2 open-label clinical trial is evaluating the safety and efficacy of ATI-502, a topical JAK1/3 inhibitor, on the repigmentation of facial skin in 34 patients with vitiligo. 6-month interim data are expected in the second quarter of 2019 and 12-month data are expected in the second half of 2019.
AD-201 Topical – This ongoing Phase 2 open-label clinical trial is evaluating the safety and efficacy of ATI-502, a topical JAK1/3 inhibitor, in 22 adult patients with moderate-to-severe atopic dermatitis (AD). Data are expected in mid-2019.
AUAT-201 Oral – This ongoing randomized, double-blinded, parallel-group, placebo-controlled trial is evaluating the safety, efficacy, and dose response of three concentrations of ATI-501, an oral JAK 1/3 inhibitor, on the regrowth of hair in 87 patients with AA. Data are expected in the second half of 2019.
ATI-450 (MK-2 Inhibitor) – We expect to submit an Investigational New Drug (IND) application for rheumatoid arthritis to the FDA in mid-2019. If the IND is allowed by the FDA, we expect to initiate a Phase 1 and Phase 2 trial in the second half of 2019.
Recent Corporate Highlights:

Significant presence at 2019 Annual Academy of Dermatology (AAD) Annual Meeting to support the relaunch of RHOFADE. Aclaris also presented 6 posters, including 2 oral presentations regarding the clinical results of ESKATA for the treatment of raised seborrheic keratosis and A-101 45% topical solution for the treatment of common warts.
Aclaris received approval from the Swedish Medical Products Agency to market ESKATA (hydrogen peroxide) cutaneous solution, 685 mg, for the treatment in adults of seborrheic keratoses that are not pedunculated and have up to a maximum diameter of 15 mm each. Aclaris also has received approval to market the medicine in the United Kingdom, Iceland, and Belgium. Aclaris is seeking a commercial partner or partners to market the medicine as an aesthetic skin treatment in various European countries with the brand name ESKATA in Finland, Iceland, Netherlands, Norway, Portugal, Spain, Sweden, Czech Republic, and Belgium, and the brand name ESKERIELE in Austria, France, Germany, Ireland, Italy, and the United Kingdom.
Canadian partner Cipher Pharmaceuticals Inc. submitted a New Drug Submission for A-101 40% Topical Solution for the treatment of raised SKs, which was accepted for review by Health Canada in December 2018.
Commercial Update:

Jeff Wayne, Aclaris’ Vice President of Business Development, was recently appointed as interim Head of Commercial. Mr. Wayne brings over 30 years of pharmaceutical experience with the majority spent in dermatology. During his career, he has held positions of increasing responsibility in sales, marketing, and general management with Galderma, Intendis, Promius Pharma (where he built, launched, and led the commercial organization), Onset Dermatologics, and LEO Pharma. He launched METROGEL in both the United States and Canada and was responsible for the marketing of FINACEA in the United States; two medications prescribed for the treatment of rosacea. In his role as Vice President, Business Development, he managed the RHOFADE transaction from the beginning, providing a seamless transition of leadership.
Following our National Sales Meeting held mid-February, RHOFADE was officially relaunched, and featured prominently at the Aclaris booth and throughout the convention venue at the 2019 AAD Annual Meeting.
The Aclaris field sales team was realigned to optimize reach and call frequency on current and potential RHOFADE prescribers, as well as the top 10 ESKATA accounts in each territory.
Comparing the 4-week period ended March 8, 2019 to the immediately prior 4-week period, the IQVIA data showed an 8.4% increase in total prescriptions for RHOFADE.
Based on these early prescription trends, we believe the response to the RHOFADE message, which emphasizes the need to treat all rosacea patients with persistent facial erythema, appears positive.
Financial Highlights

Liquidity and Capital Resources

As of December 31, 2018, Aclaris had aggregate cash, cash equivalents and marketable securities of $168.0 million compared to $208.9 million as of December 31, 2017. The $30.9 million decrease during the year ended December 31, 2018 included:

Aggregate net proceeds of $100.2 million from the sale of common stock in a follow-on public offering of common stock in October 2018;
$67.1 million of cash used to acquire the global rights to RHOFADE;
$29.9 million of cash, net of issuance costs, borrowed under the loan agreement with Oxford Finance LLC;
$1.4 million in property and equipment purchases; and
Net loss of $132.7 million, offset by $9.4 million of net cash provided by working capital and $21.9 million of non-cash stock-based compensation expense, depreciation, and amortization.
Aclaris anticipates that its cash, cash equivalents and marketable securities as of December 31, 2018 will be sufficient to fund its operations into the fourth quarter of 2020, without giving effect to any potential new business development transactions or financing activities.

Fourth Quarter 2018 Financial Results

Net loss was $38.6 million for the fourth quarter of 2018, compared to $22.9 million for the fourth quarter of 2017.
Net revenues were $3.7 million for the quarter ended December 31, 2018, which consisted of $0.8 million of net ESKATA sales, $1.1 million of net RHOFADE sales (December only), $1.3 million of contract research revenues, and $0.5 million of other revenue. This compared to $1.0 million for the quarter ended December 31, 2017, all of which was contract research revenues. Cost of revenues was $3.5 million for the quarter ended December 31, 2018, compared to $0.8 million for the quarter ended December 31, 2017.
Total operating expenses for the fourth quarter of 2018 were $39.2 million, compared to $25.7 million for the fourth quarter of 2017.
Research and development expenses were $19.5 million for the fourth quarter of 2018, compared to $13.2 million for the fourth quarter of 2017. The increase of $6.3 million was mainly the result of the continued growth of Aclaris’ JAK inhibitor and common wart programs, as multiple Phase 2 trials of ATI-501 and ATI-502 and Phase 3 trials of A-101 45% were ongoing in the fourth quarter of 2018, as well as the increased headcount to support these programs.
Sales and marketing expenses were $13.0 million for the fourth quarter of 2018, compared to $6.6 million for the fourth quarter of 2017. The increase of $6.4 million was the result of increases in direct marketing and professional fees, as well as other commercial and personnel expenses incurred to support the continued commercialization of ESKATA following its launch in May 2018.
General and administrative expenses were $6.7 million for the fourth quarter of 2018, compared to $5.9 million for the fourth quarter of 2017. The increase was driven by headcount increases, and legal and business development costs related to the RHOFADE acquisition in the fourth quarter of 2018.
Full Year 2018 Financial Results

Net loss was $132.7 million for the year ended December 31, 2018, compared to $68.5 million for the year ended December 31, 2017.
Net revenues were $10.1 million for the year ended December 31, 2018, which consisted of $2.8 million of net ESKATA sales, $1.1 million of net RHOFADE sales (December only), $4.7 million of contract research revenues, and $1.5 million of other revenue. This compared to $1.7 million for the year ended December 31, 2017, all of which was contract research revenues. Cost of revenues was $6.9 million for the year ended December 31, 2018, compared to $1.2 million for the year ended December 31, 2017.
Total operating expenses were $138.7 million for the year ended December 31, 2018, compared to $72.9 million for the year ended December 31, 2017. Net cash used in operating activities was $100.8 million for the year ended December 31, 2018, compared to $54.7 million for the year ended December 31, 2017.
Research and development expenses were $63.0 million for the year ended December 31, 2018, compared to $39.8 million for the year ended December 31, 2017. The increase of $23.2 million was mainly the result of the continued growth of Aclaris’ JAK inhibitor and common wart programs, as multiple Phase 2 trials of ATI-501 and ATI-502 and Phase 3 trials of A-101 45% were conducted throughout 2018, as well as the increased headcount to support these programs. These increases were offset by a decrease in costs related to the development of ESKATA as Aclaris submitted the NDA for ESKATA in February 2017 following the completion of the clinical trials.
Sales and marketing expenses were $48.0 million for the year ended December 31, 2018, compared to $13.8 million for the year ended December 31, 2017. The increase of $34.2 million was the result of increases in direct marketing and professional fees, as well as other commercial expenses incurred to support the launch and commercialization of ESKATA in May 2018. Personnel expenses also increased as Aclaris completed the hiring of its field sales force early in 2018.
General and administrative expenses were $27.6 million for the year ended December 31, 2018, compared to $19.3 million for the year ended December 31, 2017. The increase of $8.3 million was the result of higher personnel expenses, due to increased headcount to support the commercial launch of ESKATA, as well as legal and business development costs related to the RHOFADE acquisition during 2018. General and administrative expenses for the year ended December 31, 2018 also included a $1.5 million ESKATA-related milestone payment, whereas the year ended December 31, 2017 included a $1.0 million ESKATA-related milestone payment.
As of December 31, 2018, Aclaris had 41.2 million shares of common stock outstanding.
2019 Financial Outlook

Aclaris expects 2019 GAAP research and development (R&D) expenses to be in the range of $61 to $64 million, including estimated stock-based compensation of $7 million. This expense guidance for R&D in 2019 contemplates the completion of Aclaris’ Phase 2 clinical trials in AA, open label trials in AGA, vitiligo and AD, and two pivotal Phase 3 trials in common warts, as well as the further advancement of Aclaris’ preclinical pipeline compounds, including ATI-450 and ATI-1777.
Aclaris expects 2019 GAAP sales and marketing (S&M) expenses to be in the range of $37 to $40 million, including estimated stock-based compensation of $4 million. This expense guidance for S&M in 2019 contemplates all salesforce costs and the selling and marketing initiatives to support our commercial brands.
Aclaris expects 2019 GAAP general and administrative (G&A) expenses to be in the range of $29 to $31 million, including estimated stock-based compensation of $10 million. This expense guidance for G&A in 2019 contemplates additional medical affairs, legal, and compliance activities to support our commercial brands.
Company to Host Conference Call

Management will conduct a conference call at 8:00 AM ET today to discuss Aclaris’ financial results and provide a general business update. The conference call will be webcast live over the Internet and can be accessed by logging on to the "Investors" page of the Aclaris Therapeutics website, www.aclaristx.com, prior to the event. A replay of the webcast will be archived on the Aclaris Therapeutics website for 30 days following the call.

To participate on the live call, please dial (844) 776-7782 (domestic) or (661) 378-9535 (international), and reference conference ID 9765869prior to the start of the call.