PTC Therapeutics (PTCT) S-8 Registration of securities for employees

Exhibit 23.2

Consent of Independent Registered Public Accounting Firm

We consent to the incorporation by reference in the Registration Statement (Form S-8) pertaining to the Inducement Stock Option Awards (Apr 2014 — Jan 2015) of PTC Therapeutics, Inc. of our report dated March 2, 2015 with respect to the consolidated financial statements of PTC Therapeutics, Inc. included in its Annual Report (Form 10-K) for the year ended December 31, 2014, filed with the Securities and Exchange Commission.

/s/ Ernst & Young LLP

Metro Park, New Jersey

April 17, 2015