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Stemline Therapeutics Reports Third Quarter 2018 Financial Results

NEW YORK, Nov. 08, 2018 (GLOBE NEWSWIRE) -- Stemline Therapeutics, Inc. (Nasdaq: STML), a biopharmaceutical company focused on the development and potential commercialization of novel oncology therapeutics, announced today financial results for the quarter ended September 30, 2018. The Company also reviewed recent clinical and regulatory events, and outlined key upcoming milestones:

ELZONRIS – Potential Approval and Pre-Commercial Activities

  • The FDA accepted, for filing, the Company’s Biologics License Application (BLA) for ELZONRISTM (tagraxofusp; SL-401) for the treatment of patients with blastic plasmacytoid dendritic cell neoplasm (BPDCN). The FDA also granted Priority Review for the BLA and set a target action date of February 21, 2019, under the Prescription Drug User Fee Act (PDUFA).
  • In preparation for potential US approval, we continue to build out our pre-launch activities. These efforts include ramping up our disease awareness campaign targeting key stakeholders including hematologist-oncologists, dermatologists, and pathologists.
  • During the quarter, we conducted meetings with our assigned Rapporteurs and the European Medicines Agency (EMA). Based on feedback from these meetings, we plan to submit a Marketing Authorization Application (MAA) to the EMA for ELZONRIS in the first quarter of 2019 seeking marketing approval in Europe.

ELZONRIS – Market Expansion Efforts

  • ELZONRIS is being evaluated in clinical trials in additional indications, with a focus on chronic myelomonocytic leukemia (CMML) and myelofibrosis (MF).
  • Based on the clinical results observed in CMML and MF thus far, we are finalizing registrational plans in these indications. We plan to seek regulatory advice in early 2019 with the goal of initiating pivotal trials, or cohorts, to follow. Ahead of this, the ongoing trial continues to enroll CMML and MF patients, and periodic updates at upcoming conferences will be provided.

ASH Conference

  • At the upcoming American Society of Hematology (ASH) conference in December, ELZONRIS data were selected for four presentations, including an oral presentation. Presentations include results of the BPDCN pivotal trial and updated clinical trial data in patients with chronic myelomonocytic leukemia (CMML) and myelofibrosis (MF).
  • Additionally, we expect to have a robust clinical, medical affairs and pre-commercial presence at ASH, including hosting an investor/analyst event on December 3rd.


  • In October, data from the ongoing Phase 1 trial of SL-801 in patients with advanced solid tumors were presented at the European Society of Medical Oncology (ESMO) Annual Congress 2018.
  • Patient enrollment and dose escalation continues. We expect to provide further updates at upcoming conferences.


  • In October, data from the Phase 2 trial of SL-701 in patients with second-line glioblastoma (GBM) were delivered via oral presentation at the European Society of Medical Oncology (ESMO) Annual Congress 2018.
  • Discussions around next steps to unlock potential value from the program are ongoing, and we expect to provide further updates at upcoming conferences.

Ivan Bergstein, M.D., CEO of Stemline Therapeutics, commented “This is an extremely exciting time for Stemline, as we gear up for the possible approval and near-term launch of ELZONRIS for BPDCN. We have nearly completed the full build-out of our U.S. sales force and commercial infrastructure in preparation for potential launch of ELZONRIS. In parallel, we continue to generate very promising clinical data in CMML and MF, additional areas of unmet medical need. Overall, the ability to effectively target CD123 with an acceptable safety profile we believe opens up significant developmental and commercial opportunities for Stemline.”

Third Quarter 2018 Financial Results Review

Stemline ended the third quarter of 2018 with $78.5 million in cash, cash equivalents and investments, representing cash use of $18.6 million in the third quarter. The Company ended the third quarter of 2018 with 31.7 million shares outstanding. For the third quarter of 2018, Stemline had a net loss of $21.0 million, or $0.73 per share, compared with a net loss of $16.1 million, or $0.68 per share, for the same period in 2017.

Research and development expenses were $11.8 million for the quarter ended September 30, 2018, compared with $12.4 million for the quarter ended September 30, 2017.

General and administrative expenses were $9.6 million for the quarter ended September 30, 2018, compared with $4.2 million for the quarter ended September 30, 2017, representing an increase of $5.4 million. The higher expenses were primarily attributed to a $4.6 million increase in pre-launch expenses to support a potential commercialization of ELZONRIS in BPDCN, if marketing approval from the FDA is obtained. Additionally, the higher expense was also due to an increase in non-cash stock-based compensation and increased headcount.

Please visit the BPDCN disease awareness booth (#205) at ASH 2018, and the BPDCN disease awareness website at

About Stemline Therapeutics
Stemline Therapeutics, Inc. is a biopharmaceutical company focused on the development and potential commercialization of novel oncology therapeutics. Stemline is developing three clinical stage product candidates, ELZONRISTM (tagraxofusp; SL-401), SL-801, and SL-701. ELZONRIS is a targeted therapy directed to the interleukin-3 receptor (CD123) present on a range of malignancies. ELZONRIS has completed a pivotal trial in blastic plasmacytoid dendritic cell neoplasm (BPDCN), for which it was granted breakthrough therapy designation (BTD). The pivotal trial met its primary endpoint, and a Biologics License Application (BLA) has been accepted for filing and granted Priority Review by the FDA. ELZONRIS is also being evaluated in clinical trials in additional indications including chronic myelomonocytic leukemia (CMML), myelofibrosis (MF), and others. SL-801 is a novel oral small molecule reversible inhibitor of XPO1 that is currently in a Phase 1 trial of patients with advanced solid tumors; dose escalation is ongoing. SL-701, an immunotherapeutic, has completed a Phase 2 trial in patients with second-line glioblastoma; data and next steps for the program are being evaluated.

Forward-Looking Statements
Some of the statements included in this press release may be forward-looking statements that involve a number of risks and uncertainties. For those statements, we claim the protection of the safe harbor for forward-looking statements contained in the Private Securities Litigation Reform Act of 1995. The factors that could cause our actual results to differ materially include: the success and timing of our BLA submission to the FDA; the success and timing of our clinical trials and preclinical studies for our product candidates, including site initiation, institutional review board approval, scientific review committee approval, patient accrual, safety, tolerability and efficacy data observed, and input from regulatory authorities including the risk that the FDA or other ex-U.S. national drug authority ultimately does not agree with our data, find our data supportive of approval, or approve any of our product candidates; our plans to develop and commercialize our product candidates; market acceptance of our products; reimbursement available for our products; our available cash and investments; our ability to obtain and maintain intellectual property protection for our product candidates; our ability to manufacture; the performance of third-party manufacturers, clinical research organizations, clinical trial sponsors and clinical trial investigators; and other risk factors identified from time to time in our reports filed with the SEC. Any forward-looking statements set forth in this press release speak only as of the date of this press release. We do not intend to update any of these forward-looking statements to reflect events or circumstances that occur after the date hereof.

Investor Relations
Stemline Therapeutics, Inc.
750 Lexington Avenue
Eleventh Floor
New York, NY 10022
Tel: 646-502-2307

Table 1. Stemline Therapeutics, Inc. - Balance Sheets

    September 30, 2018
  December 31, 2017  
Current assets:          
Cash and cash equivalents   $ 11,677,741   $ 4,795,098  
Short-term investments   66,856,499   46,924,612  
Prepaid expenses and other current assets    1,996,235   469,067  
Total current assets    80,530,475   52,188,777  
Property and equipment, net    221,820   136,672  
Long-term investments      14,468,414  
Other Assets   212,305   212,305  
Total assets    $ 80,964,600   $ 67,006,168  

Liabilities and stockholders’ equity
Current liabilities:          
Accounts payable and accrued expenses   $ 17,202,090   $ 19,742,087  
Other current liabilities     133,170     96,826  
Total current liabilities   17,335,260   19,838,913  
Other liabilities   91,174   96,826  
Total liabilities    17,426,434   19,935,739  
Commitments and Contingencies
Stockholders’ equity:
Preferred stock $0.0001 par value, 5,000,000 shares authorized, none issued and outstanding at September 30, 2018 and December 31, 2017      
Common stock $0.0001 par value, 53,750,000 shares authorized at September 30, 2018 and December 31, 2017. 31,671,552 shares issued and outstanding at September 30, 2018 and 25,313,595 shares issued and outstanding at December 31, 2017    3,167   2,531  
Additional paid-in capital    326,084,695   251,489,546  
Accumulated other comprehensive loss   (96,546 ) (145,958 )
Accumulated deficit    (262,453,150 ) (204,275,690 )
Total stockholders’ equity    63,538,166   47,070,429  
Total liabilities and stockholders’ equity    $ 80,964,600   $ 67,006,168  

Table 2. Stemline Therapeutics, Inc. - Statements of Operations (Unaudited)

  Three Months Ended September 30,   Nine Months Ended September 30,  
    2018     2017     2018       2017  
Grant income $    —   $   299,397   $   500,000     $   898,199  

Operating expenses:
Research and development   11,758,025     12,417,652     35,650,147       33,517,006  
General and administrative   9,647,336     4,152,449     24,208,551       14,000,854  
Total operating expenses   21,405,361     16,570,101     59,858,698       47,517,860  
Loss from operations   (21,405,361 )   (16,270,704 )   (59,358,698 )     (46,619,661 )
Other income       381           381  
Other expense       (3,566 )      (3,897 )     (3,566 )
Interest expense   (350 )       (473 )      
Interest income   361,715     217,742     973,617       543,753  
Net loss $ (21,043,996 ) $  (16,056,147 ) $ (58,389,451 )   $ (46,079,093 )
Net loss per common share:                
Basic and Diluted $  (0.73 ) $  (0.68 ) $  (2.07 )   $  (2.01 )
Weighted-average shares outstanding: 

Basic and Diluted
  29,018,507     23,464,505      28,253,750         22,901,883  

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