13G Filing: RTW Investments, LP and Regenxbio Inc. (RGNX)

 

SIGNATURE

 

After
reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true,
complete and correct.

 

Dated:
October 5, 2017

 

	RTW Investments, LP
	By:	/s/ Roderick Wong
		Roderick Wong, Managing Partner
	Roderick Wong
	By:	/s/ Roderick Wong
		Roderick Wong, Individually

 

The
original statement shall be signed by each person on whose behalf the statement is filed or his authorized representative. If
the statement is signed on behalf of a person by his authorized representative other than an executive officer or general partner
of the filing person, evidence of the representative’s authority to sign on behalf of such person shall be filed with the
statement, provided, however, that a power of attorney for this purpose which is already on file with the Commission may be incorporated
by reference. The name and any title of each person who signs the statement shall be typed or printed beneath his signature.

 

Note.
Schedules filed in paper format shall include a signed original and five copies of the schedule, including all exhibits. See s.240.13d-7
for other parties for whom copies are to be sent.

 

Attention.
Intentional misstatements or omissions of fact constitute Federal criminal violations (see 18 U.S.C. 1001).