Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in this Registration Statement on FormS-8 of our report dated March 2, 2020 relating to the financial statements of Kaleido Biosciences, Inc., appearing in the Annual Report on Form10-K of Kaleido Biosciences, Inc. for the year ended December 31, 2019.
/s/ Deloitte & Touche LLP
Boston, Massachusetts
May 8, 2020