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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

_______________________

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

(Amendment No. )

_______________________

Filed by the Registrant x

Filed by a Party other than the Registrant o

Check the appropriate box:

o    Preliminary Proxy Statement

o    Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

o    Definitive Proxy Statement

x    Definitive Additional Materials

o    Soliciting Material under §240.14a-12

AKEBIA THERAPEUTICS, INC.

(Name of Registrant as Specified In Its Charter)

n/a

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

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