Attached files

file filename
S-1/A - AMENDMENT NO. 1 TO FORM S-1 - Flexion Therapeutics Incd621839ds1a.htm
EX-10.11 - EX-10.11 - Flexion Therapeutics Incd621839dex1011.htm
EX-10.10 - EX-10.10 - Flexion Therapeutics Incd621839dex1010.htm
EX-10.3 - EX-10.3 - Flexion Therapeutics Incd621839dex103.htm
EX-10.4 - EX-10.4 - Flexion Therapeutics Incd621839dex104.htm
EX-10.5 - EX-10.5 - Flexion Therapeutics Incd621839dex105.htm
EX-1.1 - EX-1.1 - Flexion Therapeutics Incd621839dex11.htm
EX-3.1A - EX-3.1A - Flexion Therapeutics Incd621839dex31a.htm
EX-4.1 - EX-4.1 - Flexion Therapeutics Incd621839dex41.htm
EX-5.1 - EX-5.1 - Flexion Therapeutics Incd621839dex51.htm
EX-4.3 - EX-4.3 - Flexion Therapeutics Incd621839dex43.htm

EXHIBIT 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the use in this Amendment No. 1 to the Registration Statement on Form S-1 of Flexion Therapeutics, Inc. of our report dated August 2, 2013, except for the second, third and fourth paragraphs in Note 1 and except for Note 16, as to which the date is January 28, 2014, relating to the consolidated financial statements of Flexion Therapeutics, Inc., which appears in such Registration Statement. We also consent to the reference to us under the heading “Experts” in such Registration Statement.

/s/ PricewaterhouseCoopers LLP

Boston, Massachusetts

January 28, 2014