13G Filing: EcoR1 Capital and Dicerna Pharmaceuticals Inc (DRNA)

Item

1.

(a)

Name of Issuer Dicerna Pharmaceuticals, Inc.

(b)

Address of Issuer’s Principal Executive Offices

87 Cambridgepark Drive Cambridge, MA 02140

Item

2.

(a)

The names of the persons filing this statement are: EcoR1 Capital Fund Qualified, L.P. (“Qualified Fund”); EcoR1 Capital, LLC (“EcoR1”) and Oleg Nodelman (“Nodelman”) (collectively, the “Filers”).

 

Qualified Fund is filing this statement
jointly with the other Filers, but not as a member of a group and it expressly disclaims membership in a group. In addition, filing
this Schedule 13G on behalf of Qualified Fund should not be construed as an admission that it is, and it disclaims that it is,
a beneficial owner, as defined in Rule 13d-3 under the Act, of any of the Stock covered by this Schedule 13G.

 

Each Filer also disclaims beneficial
ownership of the Stock except to the extent of that person’s pecuniary interest therein.

 

(b)

The principal business office of the Filers is located at: 409 Illinois Street, San Francisco, CA 94158

(c)

For citizenship of Filers, see Item 4 of the cover sheet for each Filer.

(d)

This statement relates to shares of Common Stock, $0.0001 par value of the Issuer (the “Stock”).

(e)

The CUSIP number of the Issuer is: 253031108.