Exhibit

We consent to the incorporation by reference in this Registration Statement of CTI BioPharma Corp. on Form S-8 of our report dated March 7, 2018, with respect to our audits of the consolidated financial statements and related consolidated financial statement schedule of CTI BioPharma Corp. as of December 31, 2017 and 2016 and for the years ended December 31, 2017, 2016 and 2015 and our report dated March 7, 2018 with respect to our audit of the effectiveness of internal control over financial reporting of CTI BioPharma Corp. as of December 31, 2017 appearing in the Annual Report on Form 10-K of CTI BioPharma Corp. for the year ended December 31, 2017.