EX-24 2 c575332_24.htm POWER OF ATTORNEY

Exhibit 24

                                                                      Exhibit 24


                                   POWER OF ATTORNEY


     Know all by these presents, that the undersigned hereby constitutes and appoints
each of Christopher D. Ozeroff, Patrick M. Wheeler, Brian Selby and Brent D. Fassett,
signing individually, the undersigned's true and lawful attorneys-in fact and agents to:

          (1)  execute for and on behalf of the undersigned, an officer, director
     or holder of 10% of more of a registered class of securities of ARCA biopharma, Inc.
     (the "Company"), Forms 3, 4 and 5 in accordance with Section 16(a) of the
      Securities Exchange Act of 1934, as amended (the "Exchange Act") and the rules
      thereunder;

         (2)  do and perform any and all acts for and on behalf of the undersigned
     that may be necessary or desirable to complete and execute such Form 3, 4 or
     5, complete and execute any amendment or amendments thereto, and timely file
     such forms or amendments with the United States Securities and Exchange
     Commission and any stock exchange or similar authority; and

          (3)  take any other action of any nature whatsoever in connection with
     the foregoing which, in the opinion of such attorney-in-fact, may be of benefit,
     in the best interest of, or legally required by, the undersigned, it being
     understood that the documents executed by such attorney-in-fact on behalf
     of the undersigned pursuant to this Power of Attorney shall be in such form
     and shall contain such terms and conditions as such attorney-in-fact may
     approve in such attorney-in-fact's discretion.

     The undersigned hereby grants to each such attorney-in-fact full power and
authority to do and perform any and every act and thing whatsoever requisite,
necessary, or proper to be done in the exercise of any of the rights and powers
herein granted, as fully to all intents and purposes as the undersigned might or
could do if personally present, with full power of substitution or revocation,
hereby ratifying and confirming all that such attorney-in-fact, or such
attorney-in-fact's substitute or substitutes, shall lawfully do or cause to be
done by virtue of this power of attorney and the rights and powers herein granted.
The undersigned acknowledges that the foregoing attorneys-in-fact, in serving in
such capacity at the request of the undersigned, are not assuming, nor is the
Company assuming, any of the undersigned's responsibilities to comply with
Section 16 of the Exchange Act.

      This Power of Attorney shall remain in full force and effect until the earliest
to occur of (a) the undersigned is no longer required to file Forms 3, 4 and 5
with respect to the undersigned's holdings of and transactions in securities issued
by the Company, (b) revocation by the undersigned in a signed writing delivered
to the foregoing attorneys-in-fact or (c) as to any attorney-in-fact individually,
until such attorney-in-fact shall no longer be employed by the Company or Cooley
Godward Kronish LLP, as applicable.

      IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to be
executed as of this 19th day of July, 2013.


                         /s/ Raymond L. Woosley
                         ----------------------------------------
                         Raymond L. Woosley, M.D., Ph.D.