EX-23.1 7 a2224803zex-23_1.htm EX-23.1
QuickLinks -- Click here to rapidly navigate through this document

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm

We consent to the reference to our firm under the caption "Experts" and to the use of our report dated March 5, 2015 in Amendment No. 1 to the Registration Statement (Form S-1) and related Prospectus of Catabasis Pharmaceuticals, Inc. dated June 2, 2015.

|  | /s/ Ernst & Young LLP
Boston, Massachusetts June 2, 2015 |  |

QuickLinks

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm