EX-23.3 5 a2236510zex-23_3.htm EX-23.3

Exhibit 23.3

Consent of Independent Auditor

We consent to the use in this Registration Statement on Form S-4 of OvaScience, Inc. of our report dated May 4, 2018, relating to the financial statements of Millendo Therapeutics SAS (formerly named Alizé Pharma), appearing in the proxy statement/prospectus/information statement, which is part of this Registration Statement.

We also consent to the reference to our firm under the heading “Experts” in such Registration Statement.

| Lyon, September 26, 2018
| Le Commissaire aux comptes
| /s/ RSM Rhône-Alpes
| Gaël Dhalluin
| Partner