February 18, 2020 Dr. William V. Williams CEO BriaCell Therapeutics Corporation Suite300 Bellevue Centre, 235 –15th Street West Vancouver, BC V7T2X1 RE: Extension of Loan Agreement Maturity Date Dear Dr. Williams,

Exhibit 10.40

February 18, 2020

Xx. Xxxxxxx X. Xxxxxxxx

CEO

BriaCell Therapeutics Corporation

Suite300

Bellevue Centre, 000 –00^xx Xxxxxx

West Vancouver, BC V7T2X1

RE: Extension of Loan Agreement Maturity Date

Dear Xx. Xxxxxxxx,

Regarding the Loan Agreements between Clearit LLC and BriaCell Therapeutics Corporation dated December 3, 2019 and January 27, 2020, Clearit LLC, without penalty, hereby extends the maturity dates of each Loan Agreement from March 2, 2020 to March 20, 2020.

Sincerely,

Xxxxxx X. Xxxxxxx

Chief Executive Officer

0x Xxxxx Xxx, Xxxxxxxxxx, XX 00000 * Tel. 0 (000) 000-0000* Email: xxxxxxxxxxxxx@xxxxx.xxx