Emergent BioSolutions to Participate in Series of Near-Term Investor Conferences

On November 6, 2018 Emergent BioSolutions Inc. (NYSE: EBS) reported that a member of the company’s senior management team will participate in the following investor conferences during the fourth quarter and early portion of the first quarter of 2019 (Press release, Emergent BioSolutions, NOV 6, 2018, View Source;p=RssLanding&cat=news&id=2375511 [SID1234530772]):

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JP Morgan – 2018 CEO Conference Call Series
Virtual/Conference Call (information to be provided by JP Morgan)
November 13, 2018

Three Part Advisors – 2018 Southwest IDEAS Investor Conference
Dallas, TX
November 14-15, 2018

Piper Jaffray – 30th Annual Healthcare Conference
New York, NY
November 27-29, 2018

Mizuho – Global Mizuho Investor Conference
New York, NY
December 3, 2018

BMO Capital Markets – 2018 Prescriptions for Success Healthcare Conference
New York, NY
December 12, 2018

JP Morgan – 37th Annual Healthcare Conference
San Francisco, CA
January 7-10, 2019
Presentation dates and times will be updated on the Emergent website www.emergentbiosolutions.com under "Investors" as the information becomes available.
For these conferences, the company will be webcasting its presentation, which may include a discussion of the company’s recent business developments as well as its most recently reported financial results and guidance. The webcasts will be available both live and by replay, accessible from the Emergent website.

Alkermes Presents New Data on ALKS 4230 at Society for Immunotherapy of Cancer’s (SITC) 33rd Annual Meeting

On November 6, 2018 Alkermes plc (Nasdaq: ALKS) reported the presentation of three abstracts at the Society for Immunotherapy of Cancer (SITC) (Free SITC Whitepaper)’s (SITC) (Free SITC Whitepaper) 33rd Annual Meeting in Washington, D.C., Nov. 9-11, 2018 (Press release, Alkermes, NOV 6, 2018, View Source;p=irol-newsArticle&ID=2375550 [SID1234530794]). Initial clinical data from the ongoing monotherapy dose-escalation stage of the phase 1 study for ALKS 4230, the company’s immuno-oncology drug candidate, will be presented for the first time. ALKS 4230 is a novel, engineered fusion protein designed to selectively activate tumor-killing immune cells while avoiding the expansion of immunosuppressive cells by preferentially binding to the intermediate-affinity interleukin-2 (IL-2) receptor complex.

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"The selectivity of ALKS 4230 is designed to leverage the proven anti-tumor effects of existing IL-2 therapy while overcoming its limitations. These initial data from our phase 1 study demonstrate the unique mechanism of ALKS 4230, with dose-dependent pharmacodynamic effects on circulating natural killer cells and CD8+ T cells and minimal and non-dose dependent effects on immunosuppressive regulatory T cells," said Craig Hopkinson, M.D., Chief Medical Officer and Senior Vice President of Medicines Development and Medical Affairs at Alkermes. "Based on these data from our initial monotherapy dose-escalation cohorts, we’ve accelerated the development program to include evaluation of ALKS 4230 in combination with the PD-1 inhibitor pembrolizumab (KEYTRUDA). As we continue to pursue the optimal dose of ALKS 4230 in the monotherapy setting, we are also eager to explore other regimens that may provide greater dosing flexibility for patients, and plan to initiate a study for subcutaneous dosing in early 2019."

Details of the poster presentations at SITC (Free SITC Whitepaper) are as follows:

Abstract Poster #P423: "Safety, Pharmacokinetics and Pharmacodynamic Effects of ALKS 4230 in Patients With Advanced Solid Tumors From the Ongoing Dose Escalation Portion of a First-in-Human (FIH) Study," will be presented by Ulka N. Vaishampayan, M.D., Barbara Ann Karmanos Cancer Institute
ALKS 4230 was assessed in 24 patients with refractory solid tumors at doses ranging from 0.1 µg/kg/day to 3 µg/kg/day as part of the ongoing phase 1 study.
Treatment with ALKS 4230 resulted in a dose-dependent increase in circulating natural killer (NK) cells and CD8+ T cells with a near 4-fold and 2-fold expansion, respectively, at 3 µg/kg/day, and minimal, non-dose-dependent change in regulatory T (Treg) cells.
Fever and chills were the most common treatment-related adverse events (AEs) for ALKS 4230.
These data support the rationale for assessing ALKS 4230 at the 3 µg/kg/day dose in combination with pembrolizumab, as well as for continued dose escalation in the monotherapy setting.
Abstract Poster #P425: "Pharmacokinetics and Pharmacodynamic Effects of ALKS 4230, an Investigational Immunotherapeutic Agent, in Cynomolgus Monkeys After Intravenous and Subcutaneous Administration," will be presented by Lei Sun, Ph.D., Alkermes, Inc.
Data from two non-human primate studies demonstrated that subcutaneous administration of ALKS 4230 can achieve similar total systemic exposure of ALKS 4230 compared to intravenous administration, yet with less frequent dosing and a lower Cmax, leading to similar expansion of total CD8+ T cell and NK cell populations.
These data support further clinical evaluation of subcutaneous administration of
ALKS 4230 as an alternative to intravenous dosing.
Abstract Poster #P123: "Peripheral Blood Lymphocyte Responses in Patients With Renal Cell Carcinoma Treated With High-Dose Interleukin-2," will be presented by Wenxin Xu, M.D., Beth Israel Deaconess Medical Center
Consistent with the known biological activities of IL-2, administration of high-dose IL-2 resulted in an approximate 2-fold expansion of circulating cytotoxic effector CD8+ T cells and NK cells and an approximate 4-fold expansion of circulating Treg cells.
These data provide quantitative measures of the expansion of cytotoxic effectors such as CD8+ T cells and NK cells relative to Treg cells for high-dose IL-2, and may be useful in the future for evaluating possible differences in immune response to newer formulations of
IL-2.
Posters will be on display both Friday, Nov. 9 and Saturday, Nov. 10 beginning at 8:00 a.m. ET in Hall E of the Walter E. Washington Convention Center. For more information, including a complete list of abstracts, please visit the SITC (Free SITC Whitepaper) website at View Source

About the Phase 1 Study for ALKS 4230
The phase 1 study for ALKS 4230 includes three distinct stages: the ongoing monotherapy dose-escalation stage, the planned monotherapy dose-expansion stage and the recently initiated combination therapy stage with pembrolizumab. The dose-escalation stage is designed to determine a maximum tolerated dose of ALKS 4230 in a monotherapy setting and to identify the optimal dose range of ALKS 4230 based on measures of immunological-pharmacodynamic effects. Upon completion of the dose-escalation stage, Alkermes expects to initiate the monotherapy dose-expansion stage in patients with renal cell carcinoma or melanoma. The combination therapy stage of the phase 1 study will assess the safety profile and anti-tumor activity of ALKS 4230 with pembrolizumab in patients with select advanced solid tumors. This combination therapy stage will be run independent of, and concurrently with, the monotherapy dose-escalation and dose-expansion stages of the trial.

Anti-tumor response and duration of response assessments in the dose-expansion and combination stages of the phase 1 study will be based on investigator-assessed, immune-related response criteria(irRC) and independent, central, blinded radiographic review per Response Evaluation Criteria in Solid Tumors (RECIST 1.1) criteria.

About ALKS 4230
ALKS 4230 is a novel, engineered fusion protein designed to selectively activate tumor-killing immune cells while avoiding the expansion of immunosuppressive cells by preferentially binding to the intermediate-affinity interleukin-2 (IL-2) receptor complex. The selectivity of ALKS 4230 is designed to leverage the proven anti-tumor effects of existing IL-2 therapy while overcoming its limitations.

Aclaris Therapeutics Reports Third Quarter 2018 Financial Results and Provides Update on Clinical and Commercial Developments

On November 6, 2018 Aclaris Therapeutics, Inc. (NASDAQ:ACRS), a dermatologist-led biopharmaceutical company focused on identifying, developing, and commercializing innovative therapies to address significant unmet needs in aesthetic and medical dermatology and immunology, reported financial results for the third quarter of 2018 and provided an update on its clinical development and commercial programs (Press release, Aclaris Therapeutics, NOV 6, 2018, View Source [SID1234530841]).

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In October, Aclaris entered into a definitive asset purchase agreement with Allergan Sales, LLC to acquire worldwide rights to RHOFADE (oxymetazoline hydrochloride) cream, 1% and additional intellectual property. The acquisition includes an exclusive license to certain intellectual property for RHOFADE, which is approved in the United States for the topical treatment of persistent facial erythema (redness) associated with rosacea in adults. Aclaris expects this acquisition to close in the fourth quarter of 2018.

During the third quarter of 2018, total net revenue was $1.6 million, which consisted of net sales of ESKATA (hydrogen peroxide) Topical Solution, 40% (w/w) of $0.5 million and contract research revenue of $1.1 million.

In September, Aclaris initiated the Phase 3 program for A-101 45% Topical Solution (A-101 45%) for the treatment of common warts (verruca vulgaris).

Aclaris has completed enrollment in the ongoing AA-201 topical formulation trial of ATI-502 in patients with patchy alopecia areata (AA), a less severe phenotype of AA, data from which is expected in the first half of 2019.

"This is an exciting time for Aclaris. With the anticipated closing of the acquisition of RHOFADE in the fourth quarter, we will take another major step toward establishing ourselves as a fully integrated biopharmaceutical company with multiple commercial products, a robust clinical-stage pipeline and drug discovery engine," said Dr. Neal Walker, President and Chief Executive Officer of Aclaris.

Clinical Pipeline Update:

A-101 45% Topical Solution –

Initiated Phase 3 program (THWART-1 and THWART-2) for the treatment of common warts in September 2018. Topline data are expected in the second half of 2019.

Plan to commence an open-label safety extension trial investigating A-101 45% for the treatment of common warts in 2019.

JAK Inhibitor Trials:

AA-202 Topical –

An ongoing Phase 2 clinical trial of ATI-502, a topical JAK 1/3 inhibitor, for the treatment of AA.

Data from the full cohort of patients expected before year end.

After completing the 28-day portion of the trial, patients entered a 6-month open-label extension during which all continuing patients will receive drug. Treatment period extended in August 2018 for an additional 6 months to allow for full year of drug exposure.

Evidence of hair regrowth in the open-label extension portion of this trial has been observed.

Safety results – generally well-tolerated; no treatment related serious adverse events reported to date.

AUATB-201 Topical –

An ongoing Phase 2 open-label clinical trial of ATI-502 for the topical treatment of AA in Australia.

In this trial, Aclaris is evaluating the safety and efficacy of ATI-502 on the regrowth of eyebrows in patients with AA, including patients with alopecia totalis (AT) and alopecia universalis (AU). Interim update:

12 patients have been enrolled; 5 continue in the trial. Patients will also enroll in a 12 month extension phase of the trial after completing 6 months.

Evidence of eyebrow hair regrowth has been observed in two patients.

Safety results – generally well-tolerated; no treatment-related serious adverse events reported to date.

AA-201 Topical –

Completed enrollment of this ongoing Phase 2 clinical trial of ATI-502 for the topical treatment of AA.

This randomized, double-blinded, parallel-group, vehicle-controlled trial will evaluate the safety, efficacy and dose response of two concentrations of ATI-502 on the regrowth of hair in approximately 120 patients with AA. This trial is being conducted in the United States and data are expected in the first half of 2019.

VITI-201 Topical – Completed enrollment of this ongoing Phase 2 open-label clinical trial of ATI-502 for the topical treatment of vitiligo. This trial will evaluate the safety and efficacy of ATI-502 on the repigmentation of facial skin in 33 patients with vitiligo, and data are expected in 2019.

AGA-201 Topical – Completed enrollment of this ongoing Phase 2 open-label clinical trial of ATI-502 for the topical treatment of androgenetic alopecia (AGA), also known as male/female pattern hair loss. This trial will evaluate the safety and efficacy of ATI-502 on the regrowth of hair in 31 patients with AGA, and data are expected in the first half of 2019.

AD-201 Topical – an ongoing Phase 2 open-label clinical trial of ATI-502 in patients with atopic dermatitis (AD). This trial will evaluate the safety and efficacy of ATI-502 applied twice daily to affected skin for four weeks in approximately 30 adult patients with moderate-to-severe AD, and data are expected in mid-2019.

AUAT-201 Oral – an ongoing Phase 2 dose ranging trial of ATI-501, an oral JAK 1/3 inhibitor for the treatment of AA. This randomized, double-blinded, parallel-group, placebo-controlled trial will evaluate the safety, efficacy and dose response of three concentrations of ATI-501 on the regrowth of hair in approximately 80 patients with AA, and data are expected in the second half of 2019.

ATI-450 (MK-2 Inhibitor) – Investigational New Drug application on track for submission to the FDA in mid-2019.

Recent Corporate Highlights:

In October, Aclaris entered into a Loan and Security Agreement with Oxford Finance LLC. The Loan Agreement provides for up to $65 million in term loans. Of the $65 million, Aclaris borrowed $30 million on October 31, 2018. The remaining $35 million will become available for draw beginning on the closing date of the RHOFADE acquisition and ending on the earlier of March 31, 2019 or an event of default.

In October, Aclaris closed an underwritten public offering of 9,941,750 shares of Aclaris’ common stock at a price to the public of $10.75 per share, which includes the full exercise of the underwriters’ option to purchase 1,296,750 additional shares, for total gross proceeds of $106.9 million. Aclaris paid underwriting discounts and commissions of $6.4 million. All of the common stock in the offering was sold by Aclaris.

Issued US Patent # 10,098,910 – In October, Aclaris was issued a U.S. patent with 18 claims directed to an applicator containing a formulation of high concentration hydrogen peroxide and methods of using such an applicator to treat seborrheic keratosis (SK), warts and other indications, which is scheduled to expire in 2035. Orange Book listed.

Co-authored an article titled: "Inhibition of the Stromal p38MAPK/MK2 Pathway Limits Breast Cancer Metastases and Chemotherapy-Induced Bone Loss" in the journal Cancer Research. ATI-450, an investigational drug, is a selective inhibitor of p38 mitogen-activated protein kinase-activated protein kinase 2 (p38MAPK/MK2) interface and an attractive candidate for stromal-targeted therapy.

Commercial Update:

Over 1,050 ESKATA accounts opened to date.

Sales force focused on driving clinical and business integration in existing ESKATA accounts in addition to expanding account base.

National DTC campaign initiated on October 1.

Financial Highlights:

Third Quarter 2018 Financial Results

For the quarter ended September 30, 2018, total net revenues were $1.6 million, which consisted of net sales of ESKATA of $0.5 million and contract research revenue of $1.1 million, compared to $0.7 million for the quarter ended September 30, 2017, all of which was contract research revenue. For the nine months ended September 30, 2018, total net revenues were $6.4 million, which consisted of net sales of ESKATA of $2.0 million, contract research revenue of $3.4 million, and other revenue of $1.0 million, compared to $0.7 million for the nine months ended September 30, 2017, all of which was contract research revenue. Cost of revenues for the quarter and nine months ended September 30, 2018 were $1.2 million and $3.3 million, respectively, compared to $0.5 million for both the quarter and nine months ended September 30, 2017.

For the quarter ended September 30, 2018, total operating expenses were $33.9 million, compared to $19.0 million for the third quarter of 2017. For the nine months ended September 30, 2018, total operating expenses were $99.5 million, compared to $47.2 million for the same period in 2017.

Research and development (R&D) expenses for the quarter and nine months ended September 30, 2018 were $15.9 million and $43.5 million, respectively, compared to $10.9 million and $26.6 million, for the same periods of 2017. The increases of $5.0 million and $16.9 million were mainly the result of the expansion 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% are ongoing in 2018. There were also increases in medical affairs activities related to ESKATA and costs associated with drug discovery programs as a result of the acquisition of Confluence in August 2017. Personnel expenses, including stock-based compensation, increased due to increased headcount to support these programs and as a result of the acquisition of Confluence in August 2017. These increases were offset by a decrease in costs related to the development of ESKATA leading to Aclaris’ NDA submission in February 2017 following the completion of the clinical trials.

Sales and marketing (S&M) expenses for the quarter and nine months ended September 30, 2018 were $11.4 million and $35.0 million, respectively, compared to $3.6 million and $7.2 million, for the same periods of 2017. The increases of $7.8 million and $27.8 million were mainly the result of increases in direct marketing and professional fees, as well as other commercial expenses incurred to support the launch of ESKATA in May 2018. Personnel

expenses, including stock-based compensation, increased as Aclaris completed the hiring of its field sales force in the first quarter of 2018.

General and administrative (G&A) expenses for the quarter and nine months ended September 30, 2018 were $6.6 million and $21.0 million, respectively, compared to $4.6 million and $13.4 million, for the same periods of 2017. The increases of $2.0 million and $7.6 million were mainly the result of higher personnel expenses, including stock-based compensation, due to increased headcount to support the commercial launch of ESKATA, and as a result of the acquisition of Confluence in August 2017. G&A expenses for the nine months ended September 30, 2018 also included a $1.5 million ESKATA-related milestone payment, whereas the nine months ended September 30, 2017 included a $1.0 million ESKATA-related milestone payment.

For the quarter ended September 30, 2018, net loss was $32.7 million, or $1.06 per basic and diluted share, as compared to $18.2 million, or $0.63 per basic and diluted share, for the third quarter of 2017. For the nine months ended September 30, 2018, net loss was $94.2 million, or $3.04 per basic and diluted share, as compared to $45.6 million, or $1.68 per basic and diluted share, for the same period of 2017.

Liquidity and Capital Resources

As of September 30, 2018, Aclaris had aggregate cash, cash equivalents and marketable securities of $134.3 million compared to $208.9 million as of December 31, 2017.

Aclaris anticipates that its cash, cash equivalents and marketable securities balances, including the proceeds from the public offering of common stock in October and the initial drawdown from the loan facility with Oxford, will be sufficient to fund its operations into the second half of 2020, without giving effect to any potential new business development transactions or financing activities.

2018 Financial Outlook

Aclaris has updated its expected 2018 GAAP R&D expenses to be in the range of $62 to $64 million, including estimated stock-based compensation of $7 million.

Aclaris updated its expected 2018 GAAP selling, general and administrative (SG&A) expenses, which combine its Sales and marketing and General and administrative line items, to be in the range of $77 to $79 million, including estimated stock-based compensation of $14 million.

Company to Host Conference Call

Management will conduct a conference call at 5:00 PM 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.

First Patient Enrolled in Investigator-Initiated Study of Tinostamustine in Glioblastoma

On November 6, 2018 Purdue Pharma L.P. reported that the first patient has been enrolled in a Phase 1 investigator-initiated clinical trial of tinostamustine, an investigational treatment, in patients with newly-diagnosed unmethylated O6-Methylguanine-DNA-methyltransferase (MGMT) glioblastoma multiforme (unmethylated nGBM),1 the most common and aggressive type of primary malignant brain tumor.2 Now open at The University of Texas MD Anderson Cancer Center, the open-label, non-randomized trial will investigate the safety profile, maximum tolerated dose (MTD), and efficacy of tinostamustine (Press release, Purdue Pharma, NOV 6, 2018, View Source [SID1234530936]).

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Glioblastoma is an incurable cancer with a very poor prognosis.2 Median overall survival is only 15 months and survival rates have shown no notable improvement in the past 30 years.3,4 The current standard of care for the disease includes surgery and postoperative radiation therapy with concurrent and adjuvant chemotherapy using temozolomide.5-7 Prognosis is significantly worse for patients with the unmethylated MGMT form of glioblastoma because that tumor type is less likely to respond to currently available treaments.8 Under current standard of care, the two-year overall survival rate was 46 percent in patients with MGMT-methylated nGBM versus 14 percent in patients with unmethylated nGBM.8

"We are excited to see tinostamustine advance into a Phase 1 study in patients with unmethylated glioblastoma multiforme, an extremely aggressive and fatal form of brain tumor," said John Renger, PhD, vice president, Head of Research & Development and Regulatory Affairs, Purdue Pharma. "The limited brain penetration of some medications across the blood-brain barrier contributes to the poor prognosis of this disease, however, preclinical data suggest tinostamustine may have the potential to cross the blood-brain barrier to deliver therapeutic central nervous system concentrations."

The dual-acting therapy candidate tinostamustine, previously known as EDO-S101, is a novel and potentially first-in-class alkylating deacetylase inhibitor (AK-DACi) therapy. Clinical research is underway to evaluate its ability to improve access to and break the DNA strands within cancer cells, and counteract the cancer cells’ attempts to repair the DNA damage.9-12

The potential utility of tinostamustine in the treatment of glioblastoma is supported by various pre-clinical data, and the molecule has shown anti-tumor activity in multiple in-vitro models of glioblastoma. In a pharmacokinetic analysis of tinostamustine administered to murine models by IV bolus and continuous IV infusion (CIVI), tinostamustine crossed the blood-brain barrier with central nervous system (CNS) penetration of 16.5 percent and 13.8 percent for IV bolus and CIVI administrations, respectively.13 CNS penetration with adequate therapeutic CNS concentration is essential for the treatment of brain tumors.

Tinostamustine is an investigational treatment and it is not approved for use in glioblastoma patients. Tinostamustine is also in development for a range of rare or difficult-to-treat blood cancers and advanced solid tumors. The completion of the first-in-human Phase 1 dose escalation study of tinostamustine in patients with relapsed or refractory (difficult-to-treat) hematological malignancies for which there are no available therapies was announced recently, and a Phase 1/2 study in advanced solid tumors was initiated in 2017. Tinostamustine is being developed in the US by Mundipharma EDO on behalf of Purdue Pharma.

To find out more about the study, visit clinicaltrials.gov.

This release discusses an investigational new drug under development and is not intended to convey conclusions about efficacy or safety. There is no guarantee that such investigational drug will successfully complete clinical development or receive regulatory approval.

Rigel Announces Third Quarter 2018 Financial Results and Provides Company Update

On November 6, 2018 Rigel Pharmaceuticals, Inc. (Nasdaq:RIGL), reported financial results for the third quarter ended September 30, 2018, and also provided an update on the commercial launch of TAVALISSE for treatment of thrombocytopenia in adults with chronic immune thrombocytopenia (ITP) who have had an insufficient response to a previous treatment and its clinical development pipeline (Press release, Rigel, NOV 6, 2018, View Source [SID1234530861]).

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Recent Highlights

·Net product sales of $4.9 million for TAVALISSE during the third quarter

·On October 29, entered into an exclusive license and supply agreement with Kissei Pharmaceutical Co., Ltd. (Kissei) for development and marketing rights to fostamatinib in Asia; Rigel to receive upfront cash payment of $33 million, with the potential for up to an additional $147 million in milestone payments and product transfer price payments based on tiered net sales

· On October 4, the European Medicines Agency (EMA) validated the company’s Marketing Authorization Application (MAA) for fostamatinib1 in adult chronic ITP, initiating the review process

· Phase 3 trial design for fostamatinib1 investigational candidate in autoimmune hemolytic anemia (AIHA) to be submitted to U.S. Food and Drug Administration (FDA) in early November

"We continue to advance our corporate strategy with solid execution across all business areas. The success of our TAVALISSE commercial launch in the United States, our collaboration with Kissei in Asia, and our MAA validation highlight the expanding capabilities of our organization," said Raul Rodriguez, president and CEO of Rigel. "In parallel, our clinical development plans continue to increase the potential of our pipeline. For our investigational agents, we plan to initiate our Phase 3 study for fostamatinib in autoimmune hemolytic anemia in the first half of 2019 and we continue to explore potential drug development opportunities including for our IRAK1/4 inhibitor, R835."

Financial Update

For the third quarter of 2018, Rigel reported a net loss of $23.8 million, or $0.14 per share, compared to a net loss of $17.7 million, or $0.14 per share, in the same period of 2017.

For the third quarter of 2018, Rigel reported net product sales from TAVALISSE of $4.9 million. Rigel recognizes revenue using the sell-in methodology when products are delivered to its distributors. There were no product sales in the third quarter of 2017.

There were no contract revenues from collaborations in the third quarter of 2018. Contract revenues from collaborations of $900,000 in the third quarter of 2017 were related to a payment received from a license agreement with a third party.

Rigel reported total costs and expenses of $29.2 million in the third quarter of 2018, compared to $18.8 million for the same period in 2017. The increase in costs and expenses was primarily due to the increases in personnel costs as Rigel expanded its customer-facing team, third party costs to support Rigel’s ongoing commercial efforts for TAVALISSE in chronic ITP, as well as stock-based compensation expense related to certain performance-based stock options.

For the nine months ended September 30, 2018, Rigel reported net product sales from TAVALISSE of $6.7 million. There were no product sales for the nine months ended September 30, 2017. For the nine months ended September 30, 2018, Rigel reported a net loss of $73.7 million, or $0.47 per share, compared to a net loss of $52.1 million, or $0.43 per share, for the same period of 2017.

As of September 30, 2018, Rigel had cash, cash equivalents and short-term investments of $115.6 million, compared to $115.8 million as of December 31, 2017. With the $33.0 million upfront payment Rigel will receive under its collaboration agreement with Kissei, as discussed below, Rigel expects that its cash, cash equivalents and short-term investments will be sufficient to support its current and projected funding requirements, including the on-going commercial launch of TAVALISSE for chronic ITP in the U.S., into the first quarter of 2020.

Business Update

Since commercial launch in May 2018, demand for TAVALISSE in adult patients with previous treatment failure in cITP continues to grow, with broad usage seen in steroid refractory patients. TAVALISSE has been utilized by a broad base of prescribers and community physicians, and the payor response has been positive with an approval rate of 85-90%.

Outside of the U.S., the company continues to further its global commercialization strategy. Rigel has entered an exclusive license and supply agreement with Kissei for the development and commercialization of fostamatinib in all indications in Japan. The agreement also provides Kissei with rights to fostamatinib in China, Taiwan, and the Republic of Korea. In exchange, Rigel will receive an upfront cash payment of $33 million with the potential for up to an additional $147 million in development and commercial milestone payments. The company will also receive product transfer price payments in the mid to upper twenty percent range based on tiered net sales for exclusive supply of fostamatinib.

In the EU, which is the second largest market for adult chronic ITP, the EMA validated the MAA for fostamatinib1 in the indication. The review process was initiated in October and the company anticipates an opinion from the Committee on Human Medicinal Products (CHMP) of the EMA by the fourth quarter of 2019.

Rigel continues to progress with its expansion plans for fostamatinib in other indications1 and will submit its Phase 3 trial design for the treatment of warm AIHA (wAIHA) to the FDA in early November. The trial, designed in consultation with the FDA, is a placebo-controlled study of approximately 80 patients with primary or secondary wAIHA who have failed at least one prior treatment. The primary endpoint will be a durable hemoglobin response by week 24, defined as Hgb > 10 g/dL and > 2 g/dL

greater than baseline and durability of response, with the response not being attributed to rescue therapy. Enrollment is expected to begin in the first half of 2019.

About ITP
In patients with ITP, the immune system attacks and destroys the body’s own blood platelets, which play an active role in blood clotting and healing. Common symptoms of ITP are excessive bruising and bleeding. People suffering with chronic ITP may live with an increased risk of severe bleeding events that can result in serious medical complications or even death. Current therapies for ITP include steroids, blood platelet production boosters (TPOs) and splenectomy. However, not all patients are adequately treated with existing therapies. As a result, there remains a significant medical need for additional treatment options for patients with ITP.

About AIHA
AIHA is a rare, serious blood disorder in which the immune system produces antibodies that result in the destruction of the body’s own red blood cells. AIHA affects approximately 40,000 adult patients in the U.S. and can be a severe, debilitating disease. To date, there are no disease-targeted therapies approved for AIHA, despite the unmet medical need that exists for these patients.

About R8351

The investigational candidate, R835, is an orally available, potent and selective inhibitor of IRAK1 and IRAK4 that has been shown preclinically to block inflammatory cytokine production in response to toll-like receptor (TLR) and the interleukin-1 (IL-1R) family receptor signaling. TLRs and IL-1Rs play a critical role in the innate immune response and dysregulation of these pathways can lead to a variety of inflammatory conditions. R835 is active in multiple rodent models of inflammatory disease including psoriasis, arthritis, lupus, multiple sclerosis and gout.

Conference Call and Webcast with Slides Today at 5:00PM Eastern Time
Rigel will hold a live conference call and webcast today at 5:00pm Eastern Time (2:00pm Pacific Time).

Participants can access the live conference call by dialing 855-892-1489 (domestic) or 720-634-2939 (international) and using the Conference ID number 1398326. The webcast, with slide presentation, can be accessed from Rigel’s website at www.rigel.com. The webcast will be archived and available for replay after the call via the Rigel website.

About TAVALISSE
Indication
TAVALISSE (fostamatinib disodium hexahydrate) tablets is indicated for the treatment of thrombocytopenia in adult patients with chronic immune thrombocytopenia (ITP) who have had an insufficient response to a previous treatment.

Important Safety Information
Warnings and Precautions

· Hypertension can occur with TAVALISSE treatment. Patients with pre-existing hypertension may be more susceptible to the hypertensive effects. Monitor blood pressure every 2 weeks until stable, then monthly, and adjust or initiate antihypertensive therapy for blood pressure control maintenance during therapy. If increased blood pressure persists, TAVALISSE interruption, reduction, or discontinuation may be required.

· Elevated liver function tests (LFTs), mainly ALT and AST, can occur with TAVALISSE. Monitor LFTs monthly during treatment. If ALT or AST increase to >3 x upper limit of normal, manage hepatotoxicity using TAVALISSE interruption, reduction, or discontinuation.

· Diarrhea occurred in 31% of patients and severe diarrhea occurred in 1% of patients treated with TAVALISSE. Monitor patients for the development of diarrhea and manage using supportive care measures early after the onset of symptoms. If diarrhea becomes severe (>Grade 3), interrupt, reduce dose or discontinue TAVALISSE.

· Neutropenia occurred in 6% of patients treated with TAVALISSE; febrile neutropenia occurred in 1% of patients. Monitor the ANC monthly and for infection during treatment. Manage toxicity with TAVALISSE interruption, reduction, or discontinuation.

· TAVALISSE can cause fetal harm when administered to pregnant women. Advise pregnant women the potential risk to a fetus. Advise females of reproductive potential to use effective contraception during treatment and for at least 1 month after the last dose. Verify pregnancy status prior to initiating TAVALISSE. It is unknown if TAVALISSE or its metabolite is present in human milk. Because of the potential for serious adverse reactions in a breastfed child, advise a lactating woman not to breastfeed during TAVALISSE treatment and for at least 1 month after the last dose.

Drug Interactions

· Concomitant use of TAVALISSE with strong CYP3A4 inhibitors increases exposure to the major active metabolite of TAVALISSE (R406), which may increase the risk of adverse reactions. Monitor for toxicities that may require a reduction in TAVALISSE dose.

· It is not recommended to use TAVALISSE with strong CYP3A4 inducers, as concomitant use reduces exposure to R406.

· Concomitant use of TAVALISSE may increase concentrations of some CYP3A4 substrate drugs and may require a dose reduction of the CYP3A4 substrate drug.

· Concomitant use of TAVALISSE may increase concentrations of BCRP substrate drugs (eg, rosuvastatin) and P-Glycoprotein (P-gp) substrate drugs (eg, digoxin), which may require a dose reduction of the BCRP and P-gp substrate drug.

Adverse Reactions

· Serious adverse drug reactions in the ITP double-blind studies were febrile neutropenia, diarrhea, pneumonia, and hypertensive crisis, which occurred in 1% of TAVALISSE patients. In addition, severe adverse reactions occurred including dyspnea and hypertension (both 2%), neutropenia, arthralgia, chest pain, diarrhea, dizziness, nephrolithiasis, pain in extremity, toothache, syncope, and hypoxia (all 1%).

· Common adverse reactions (>5% and more common than placebo) from FIT-1 and FIT-2 included: diarrhea, hypertension, nausea, dizziness, ALT and AST increased, respiratory infection, rash, abdominal pain, fatigue, chest pain, and neutropenia.

Please see www.TAVALISSE.com for full Prescribing Information.
t side effects of prescription drugs to the FDA, visit www.fda.gov/medwatch or call 1-800-FDA-1088 (800-332-1088).

TAVALISSE and RIGEL ONECARE are trademarks of Rigel Pharmaceuticals, Inc.