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S-1/A - S-1/A - G1 Therapeutics, Inc.d128073ds1a.htm

Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the use in this Amendment No. 1 to the Registration Statement (Form S-1 No. 333-217285) of G1 Therapeutics, Inc. of our report dated February 9, 2017 relating to the financial statements, which appear in such Registration Statement. We also consent to the reference to us under the heading “Experts” in such Registration Statement.

/s/ PricewaterhouseCoopers LLP

Raleigh, North Carolina

April 26, 2017