CONDENSED STATEMENT OF CHANGES IN COMMON STOCK, CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS'' EQUITY (DEFICIT) - USD ($)	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Total
Balance at Dec. 31, 2013	$ 267	$ 366,083	$ (801,203)	$ (434,853)
Balance (in shares) at Dec. 31, 2013	2,666,666
Increase Decrease In Stockholders Equity Roll Forward
Stock-based compensation		164,156		164,156
Conversion of notes payable	$ 21	524,979		525,000
Conversion of notes payable (in shares)	207,664
Beneficial conversion feature on notes payable		614,557		614,557
Warrant, line of credit		114,300		114,300
Warrant, transfer agreement		37,840		37,840
Deemed dividends on Series A		(610,889)		(610,889)
Accretion of issuance costs		(35,784)		(35,784)
Net loss and comprehensive loss			(8,609,575)	(8,609,575)
Balance at Dec. 31, 2014	$ 288	1,175,242	(9,410,778)	(8,235,248)	[1]
Balance (in shares) at Dec. 31, 2014	2,874,330
Increase Decrease In Stockholders Equity Roll Forward
Issuance of common stock in initial public offering, net of discounts and commissions of $1,209,802 and offering costs of $2,897,825	$ 286	15,912,374		15,912,660
Issuance of common stock in initial public offering, net of discounts and commissions (in shares)	2,860,000
Conversion of preferred stock into common stock upon initial public offering	$ 201	7,651,087		7,651,288
Conversion of preferred stock into common stock upon initial public offering (in shares)	2,010,596
Conversion of preferred stock warrant liability into additional paid-in capital		1,150,985		1,150,985
Stock-based compensation		828,049		828,049
Conversion of notes payable	$ 37	2,099,963		2,100,000
Conversion of notes payable (in shares)	374,997
Beneficial conversion feature on notes payable		1,202,521		1,202,521
Deemed dividends on Series A		(263,060)		(263,060)
Accretion of issuance costs		(83,314)		(83,314)
Napo license fee abatement		250,000		250,000
Issuance of common stock upon exercise of stock options		12,650		12,650
Issuance of common stock upon exercise of stock options (in shares)	5,000
Net loss and comprehensive loss			(12,160,729)	(12,160,729)
Balance at Sep. 30, 2015	$ 812	$ 29,936,497	$ (21,571,507)	$ 8,365,802
Balance (in shares) at Sep. 30, 2015	8,124,923

[1] The condensed balance sheet at December 31, 2014 is derived from the audited financial statements at that date included in the Company’s prospectus filed with the Securities and Exchange Commission pursuant to Rule 424(b)(4) on May 14, 2015.