13G Filing: Aisling Capital IV, LP and GTx Inc (GTXI)

EXHIBIT 1

JOINT FILING AGREEMENT

Each of the undersigned hereby acknowledges and agrees, in compliance with the provisions of Rule 13d-1(k)(1) promulgated under the Securities Exchange Act of 1934, as amended, that the Schedule 13G to which this Agreement is attached as an Exhibit, and any amendments thereto, will be filed with the Securities and Exchange Commission jointly on behalf of the undersigned.  This Agreement may be executed in one or more counterparts.

Date: October 5, 2017

	AISLING CAPITAL IV, LP
	By: Aisling Capital Partners IV, LP, As its General Partner
	By: Aisling Capital Partners IV LLC, As its General Partner
	By:	/s/ Andrew Schiff
		Name: Andrew Schiff Title:   Managing Member

	AISLING CAPITAL PARTNERS IV, LP
	By: Aisling Capital Partners IV LLC, As its General Partner
	By:	/s/ Andrew Schiff
		Name: Andrew Schiff Title:   Managing Member

	AISLING CAPITAL PARTNERS IV LLC
	By:	/s/ Andrew Schiff
		Name: Andrew Schiff Title:   Managing Member

	STEVE ELMS
	By:	/s/ Steve Elms