Mutual Letter of Termination

Exhibit 10.44

Mutual Letter of Termination

ATTN: ATHENEX, INC. (formerly known as "KINEX PHARMACEUTICALS, LLC.") (hereinafter "Athenex")

0000 Xxxx Xxxxxx, Xxxxx 000,
Xxxxxxx, XX 00000

Date: 2018.08.20

To Whom It May Concern at Athenex

Dear Sirs,

Reference is made to the existing License Agreement by and between Athenex and Hanmi dated April 7, 2011 (hereinafter "License Agreement") concerning the compound KX01. Pursuant to Article 8.2(a) of said License Agreement, Athenex and Hanmi hereby mutually agree to terminate the License Agreement effective immediately, including any and all rights and obligations of the Parties thereunder, except for Article 8.3 of the License Agreement and those rights and obligations which shall survive termination of the License Agreement as set forth in said Article 8.3.

Sincerely yours,

By: /s/ Xx Xxxxx Xxxx

Xx Xxxxx Xxxx

Chief Executive Officer

Athenex hereby expresses its acceptance and agreement to the terms of this Letter via signature by its authorized personnel below:

By: /s/ Xxxxxxx Xxx

Xxxxxxx Xxx

Chief Executive Officer