EXHIBIT 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in this Registration Statement on Form S-3 of our report dated March 19, 2015, relating to the consolidated financial statements of Cerulean Pharma Inc. appearing in the Annual Report on Form 10-K of Cerulean Pharma Inc. for the year ended December 31, 2014, and to the reference to us under the heading “Experts” in the Prospectus, which is part of this Registration Statement.
| /s/ Deloitte & Touche LLP |
| Boston, Massachusetts |
| August 14, 2015 |
