Consent of independent registered public accounting firm
We hereby consent to the use in this Amendment No. 2 to the Registration Statement on Form S-1 of Rubius Therapeutics, Inc. of our report dated April 13, 2018 relating to the financial statements of Rubius Therapeutics, Inc., which appears in this Registration Statement. We also consent to the reference to us under the heading "Experts" in such Registration Statement.
/s/ PricewaterhouseCoopers LLP
Boston, Massachusetts
July 9, 2018
