EXHIBIT 99.1

FORM 4 JOINT FILER INFORMATION

Names of Joint Filers:

Aisling Capital III, LP

Aisling Capital Partners III, LP

Aisling Capital Partners III LLC

Steve Elms

Andrew N. Schiff, M.D.

Dennis J. Purcell

Address of Joint Filers:

c/o Aisling Capital Partners LLC

888 Seventh Avenue

New York, NY 10106

Designated Filer: Aisling Capital III, LP

Issuer and Ticker Symbol: Loxo Oncology, Inc. [LOXO]

Date of Event: November 22, 2017

Signatures of Joint Filers:

AISLING CAPITAL III, LP
By:	Aisling Capital Partners III, LP
	General Partner
By:	Aisling Capital Partners III LLC
	General Partner
By:	/s/ Robert Wenzel
	Name: Robert Wenzel
	Title: CFO
AISLING CAPITAL PARTNERS III, LP
By:	Aisling Capital Partners III LLC
	General Partner
By:	/s/ Robert Wenzel
	Name: Robert Wenzel
	Title: CFO
AISLING CAPITAL PARTNERS III LLC
By:	/s/ Robert Wenzel
	Name: Robert Wenzel
	Title: CFO

/s/ Steve Elms

Steve Elms

/s/ Andrew Schiff

Andrew Schiff

/s/ Dennis Purcell

Dennis Purcell