8-K – Current report

On May 6, 2016 Mast Therapeutics, Inc. (NYSE MKT: MSTX), a biopharmaceutical company developing novel, clinical-stage therapies for sickle cell disease and heart failure, reported financial results for the first quarter ended March 31, 2016 (Filing, Q1, Mast Therapeutics, 2012, MAY 6, 2016, View Source [SID:1234512073]).

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"The first quarter of 2016 was a productive one for Mast. Not only did we complete enrollment in our Phase 3 EPIC study of vepoloxamer in sickle cell disease, but also we announced positive data from a Phase 2a study of AIR001 in patients with heart failure with preserved ejection fraction conducted at Mayo Clinic, and the selection of AIR001 for a double-blind, placebo-controlled Phase 2 study in approximately 100 patients with HFpEF to be conducted at premier U.S. clinical centers that make up the HFN," stated Brian M. Culley, Chief Executive Officer.

"With 388 patients, the EPIC study was the largest placebo-controlled study in sickle cell disease ever concluded and should provide many insights into the activity of vepoloxamer in this indication. Importantly, vepoloxamer has the potential to become the first and only approved therapy for shortening the duration of a sickle cell vaso-occlusive crisis and we are working diligently toward generating top-line results, which we expect to announce this quarter," continued Mr. Culley. "Meanwhile, we are advancing our two heart failure programs. Our 150-patient Phase 2 study of vepoloxamer in chronic heart failure is ongoing, with ten study sites now open, and the HFN’s 100-patient Phase 2 study of AIR001 in HFpEF is expected to begin in the third quarter of 2016."

First Quarter 2016 Operating Results

The Company’s net loss for the first quarter of 2016 was $11.2 million, or $0.06 per share (basic and diluted), compared to a net loss of $9.6 million, or $0.06 per share (basic and diluted), for the same period in 2015.

Research and development expenses for the first quarter of 2016 were $7.9 million, an increase of $1.9 million, or 30%, compared to $6.0 million for the same period in 2015. The increase was due mainly to increases of $0.9 million in external nonclinical study fees and expenses, $0.5 million in external clinical study fees and expenses, and $0.3 million in personnel expenses.

The increase in external nonclinical study fees and expenses was due primarily to increased costs related to preparation for a new drug application for vepoloxamer ($0.5 million) and research-related manufacturing for vepoloxamer ($0.5 million), offset by a decrease in research-related manufacturing for AIR001 ($0.1 million). The increase in external clinical study fees and expenses was due primarily to increased costs related to the Phase 2 study of vepoloxamer in heart failure ($0.5 million) and the EPIC study ($0.3 million), offset by a decrease

related to discontinuation of a Phase 2 study of vepoloxamer in acute limb ischemia, which the Company began to wind-down in the third quarter of 2015 ($0.3 million).

Selling, general and administrative (SG&A) expenses for the first quarter of 2016 were $2.8 million, a decrease of $0.8 million, or 21%, compared to $3.6 million for the same period in 2015. SG&A expenses for the first quarter of 2015 included $0.4 million of severance expenses and $0.3 million of share-based compensation resulting from the termination of employment of the Company’s former president and chief operating officer in February 2015 and the acceleration of stock option vesting pursuant to the terms of his option agreements.

Interest expense for the first quarter of 2016 was $0.5 million, which was related to the Company’s debt facility. There was no interest expense for the first quarter of 2015.