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 August 2, 2019, in the Registration Statement (Form S-1) and related Prospectus of Cabaletta Bio, Inc. dated September 30, 2019.
/s/ Ernst & Young LLP
Philadelphia, Pennsylvania
September 30, 2019