Foamix Pharmaceuticals Ltd. (FOMX) Stock: Great Point Partners Boosts its Stake to 7.57%

Page 10 of 10 – SEC Filing

Exhibit A

AGREEMENT REGARDING THE JOINT FILING
OF SCHEDULE 13G

The undersigned hereby agree as follows:

(i)    Each
of them is individually eligible to use the Schedule 13G to which this Exhibit is attached, and such Schedule 13G is filed on behalf
of each of them; and

(ii)    Each
of them is responsible for the timely filing of such Schedule 13G and any amendments thereto, and for the completeness and accuracy
of the information concerning such person contained therein; but none of them is responsible for the completeness or accuracy of
the information concerning the other persons making the filing, unless such person knows or has reason to believe that such information
is inaccurate.

Date: October 11, 2016

	GREAT POINT PARTNERS, LLC
	By:	/s/ Dr. Jeffrey R. Jay, M.D.
		Dr. Jeffrey R. Jay, M.D.,
		as senior managing member
	/s/ Dr. Jeffrey R. Jay, M.D.
	DR. JEFFREY R. JAY, M.D.
	/s/ Mr. David Kroin
	MR. DAVID KROIN