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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G/A

Under the Securities Exchange Act of 1934
(Amendment No. 1)*

BIOMIMETIC THERAPEUTICS, INC.

(Name of Issuer)

Common Stock

(Title of Class of Securities)

09064X 10 1

(CUSIP Number)

December 31, 2007

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

o Rule 13d-1(b)

o Rule 13d-1(c)

þ Rule 13d-1(d)

* The remainder of this cover page shall be filled out for a reporting person’s initial filing on this form with respect to the subject class of securities, and for any subsequent amendment containing information which would alter the disclosures provided in a prior cover page.

The information required in the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).


CUSIP No.		09064X 10 1	13G	Page		2		of		20	Pages


1	NAME OF REPORTING PERSONS InterWest Partners VIII, LP I.R.S. IDENTIFICATION NO(S). OF ABOVE PERSON(S) (ENTITIES ONLY)


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
	(a) o
	(b) o

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	California

		5	SOLE VOTING POWER

NUMBER OF			857,692

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			0

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			857,692

WITH		8	SHARED DISPOSITIVE POWER

			0

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	857,692

10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES:

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

	4.7%

12	TYPE OF REPORTING PERSON

	PN


CUSIP No.		09064X 10 1	13G	Page		3		of		20	Pages


1	NAME OF REPORTING PERSONS InterWest Investors VIII, LP I.R.S. IDENTIFICATION NO(S). OF ABOVE PERSON(S) (ENTITIES ONLY)


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
	(a) o
	(b) o

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	California

		5	SOLE VOTING POWER

NUMBER OF			6,846

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			0

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			6,846

WITH		8	SHARED DISPOSITIVE POWER

			0

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	6,846

10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES:

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

	Less than 0.1%

12	TYPE OF REPORTING PERSON

	PN


CUSIP No.		09064X 10 1	13G	Page		4		of		20	Pages


1	NAME OF REPORTING PERSONS InterWest Investors Q VIII, LP I.R.S. IDENTIFICATION NO(S). OF ABOVE PERSON(S) (ENTITIES ONLY)


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
	(a) o
	(b) o

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	California

		5	SOLE VOTING POWER

NUMBER OF			24,538

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			0

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			24,538

WITH		8	SHARED DISPOSITIVE POWER

			0

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	24,538

10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES:

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

	0.1%

12	TYPE OF REPORTING PERSON

	PN


CUSIP No.		09064X 10 1	13G	Page		5		of		20	Pages


1	NAME OF REPORTING PERSONS InterWest Management Partners VIII, LLC (the General Partner of InterWest Partners VIII, LP, InterWest Investors VIII, LP, and InterWest Investors Q VIII, LP) I.R.S. IDENTIFICATION NO(S). OF ABOVE PERSON(S) (ENTITIES ONLY)


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
	(a) o
	(b) o

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	California

		5	SOLE VOTING POWER

NUMBER OF			889,076

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			0

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			889,076

WITH		8	SHARED DISPOSITIVE POWER

			0

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	889,076

10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES:

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

	4.8%

12	TYPE OF REPORTING PERSON

	OO


CUSIP No.		09064X 10 1	13G	Page		6		of		20	Pages


1	NAME OF REPORTING PERSONS Harvey B. Cash (a Managing Director of InterWest Management Partners VIII, LLC) I.R.S. IDENTIFICATION NO(S). OF ABOVE PERSON(S) (ENTITIES ONLY)


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
	(a) o
	(b) o

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	United States

		5	SOLE VOTING POWER

NUMBER OF			0

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			889,076

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			0

WITH		8	SHARED DISPOSITIVE POWER

			889,076

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	889,076

10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES:

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

	4.8%

12	TYPE OF REPORTING PERSON

	IN

Neither the filing of this statement on Schedule 13G nor any of its contents shall be deemed to constitute an admission by Harvey B. Cash that he is the beneficial owner of any of the Common Stock referred to herein for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose, and such beneficial ownership is expressly disclaimed, except to the extent of his pecuniary interest.


CUSIP No.		09064X 10 1	13G	Page		7		of		20	Pages


1	NAME OF REPORTING PERSONS Christopher B. Ehrlich (a Venture Member of InterWest Management Partners VIII, LLC) I.R.S. IDENTIFICATION NO(S). OF ABOVE PERSON(S) (ENTITIES ONLY)


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
	(a) o
	(b) o

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	United States

		5	SOLE VOTING POWER

NUMBER OF			7,081

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			889,076

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			7,081

WITH		8	SHARED DISPOSITIVE POWER

			889,076

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	896,157

10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES:

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

	4.9%

12	TYPE OF REPORTING PERSON

	IN

Neither the filing of this statement on Schedule 13G nor any of its contents shall be deemed to constitute an admission by Christopher B. Ehrlich that he is the beneficial owner of any of the Common Stock referred to herein for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose, and such beneficial ownership is expressly disclaimed, except to the extent of his pecuniary interest.


CUSIP No.		09064X 10 1	13G	Page		8		of		20	Pages


1	NAME OF REPORTING PERSONS Philip T. Gianos (a Managing Director of InterWest Management Partners VIII, LLC) I.R.S. IDENTIFICATION NO(S). OF ABOVE PERSON(S) (ENTITIES ONLY)


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
	(a) o
	(b) o

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	United States

		5	SOLE VOTING POWER

NUMBER OF			0

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			889,076

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			0

WITH		8	SHARED DISPOSITIVE POWER

			889,076

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	889,076

10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES:

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

	4.8%

12	TYPE OF REPORTING PERSON

	IN

Neither the filing of this statement on Schedule 13G nor any of its contents shall be deemed to constitute an admission by Philip T. Gianos that he is the beneficial owner of any of the Common Stock referred to herein for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose, and such beneficial ownership is expressly disclaimed, except to the extent of his pecuniary interest.


CUSIP No.		09064X 10 1	13G	Page		9		of		20	Pages


1	NAME OF REPORTING PERSONS W. Scott Hedrick (a Managing Director of InterWest Management Partners VIII, LLC) I.R.S. IDENTIFICATION NO(S). OF ABOVE PERSON(S) (ENTITIES ONLY)


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
	(a) o
	(b) o

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	United States

		5	SOLE VOTING POWER

NUMBER OF			0

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			889,076

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			0

WITH		8	SHARED DISPOSITIVE POWER

			889,076

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	889,076

10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES:

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

	4.8%

12	TYPE OF REPORTING PERSON

	IN

Neither the filing of this statement on Schedule 13G nor any of its contents shall be deemed to constitute an admission by W. Scott Hedrick that he is the beneficial owner of any of the Common Stock referred to herein for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose, and such beneficial ownership is expressly disclaimed, except to the extent of his pecuniary interest.


CUSIP No.		09064X 10 1	13G	Page		10		of		20	Pages


1	NAME OF REPORTING PERSONS W. Stephen Holmes III (a Managing Director of InterWest Management Partners VIII, LLC) I.R.S. IDENTIFICATION NO(S). OF ABOVE PERSON(S) (ENTITIES ONLY)


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
	(a) o
	(b) o

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	United States

		5	SOLE VOTING POWER

NUMBER OF			0

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			889,076

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			0

WITH		8	SHARED DISPOSITIVE POWER

			889,076

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	889,076

10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES:

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

	4.8%

12	TYPE OF REPORTING PERSON

	IN

Neither the filing of this statement on Schedule 13G nor any of its contents shall be deemed to constitute an admission by W. Stephen Holmes III that he is the beneficial owner of any of the Common Stock referred to herein for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose, and such beneficial ownership is expressly disclaimed, except to the extent of his pecuniary interest.


CUSIP No.		09064X 10 1	13G	Page		11		of		20	Pages


1	NAME OF REPORTING PERSONS Gilbert H. Kliman (a Managing Director of InterWest Management Partners VIII, LLC) I.R.S. IDENTIFICATION NO(S). OF ABOVE PERSON(S) (ENTITIES ONLY)


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
	(a) o
	(b) o

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	United States

		5	SOLE VOTING POWER

NUMBER OF			7,000

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			889,076

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			7,000

WITH		8	SHARED DISPOSITIVE POWER

			889,076

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	896,076

10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES:

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

	4.9%

12	TYPE OF REPORTING PERSON

	IN

Neither the filing of this statement on Schedule 13G nor any of its contents shall be deemed to constitute an admission by Gilbert H. Kliman that he is the beneficial owner of any of the Common Stock referred to herein for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose, and such beneficial ownership is expressly disclaimed, except to the extent of his pecuniary interest.


CUSIP No.		09064X 10 1	13G	Page		12		of		20	Pages


1	NAME OF REPORTING PERSONS H. Ronald Nash (a Venture Member of InterWest Management Partners VIII, LLC) I.R.S. IDENTIFICATION NO(S). OF ABOVE PERSON(S) (ENTITIES ONLY)


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
	(a) o
	(b) o

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	United States

		5	SOLE VOTING POWER

NUMBER OF			0

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			889,076

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			0

WITH		8	SHARED DISPOSITIVE POWER

			889,076

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	889,076

10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES:

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

	4.8%

12	TYPE OF REPORTING PERSON

	IN

Neither the filing of this statement on Schedule 13G nor any of its contents shall be deemed to constitute an admission by H. Ronald Nash that he is the beneficial owner of any of the Common Stock referred to herein for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose, and such beneficial ownership is expressly disclaimed, except to the extent of his pecuniary interest.


CUSIP No.		09064X 10 1	13G	Page		13		of		20	Pages


1	NAME OF REPORTING PERSONS Arnold L. Oronsky (a Managing Director of InterWest Management Partners VIII, LLC) I.R.S. IDENTIFICATION NO(S). OF ABOVE PERSON(S) (ENTITIES ONLY)


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
	(a) o
	(b) o

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	United States

		5	SOLE VOTING POWER

NUMBER OF			0

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			889,076

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			0

WITH		8	SHARED DISPOSITIVE POWER

			889,076

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	889,076

10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES:

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

	4.8%

12	TYPE OF REPORTING PERSON

	IN

Neither the filing of this statement on Schedule 13G nor any of its contents shall be deemed to constitute an admission by Arnold L. Oronsky that he is the beneficial owner of any of the Common Stock referred to herein for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose, and such beneficial ownership is expressly disclaimed, except to the extent of his pecuniary interest.


CUSIP No.		09064X 10 1	13G	Page		14		of		20	Pages


1	NAME OF REPORTING PERSONS Thomas L. Rosch (a Managing Director of InterWest Management Partners VIII, LLC) I.R.S. IDENTIFICATION NO(S). OF ABOVE PERSON(S) (ENTITIES ONLY)


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
	(a) o
	(b) o

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	United States

		5	SOLE VOTING POWER

NUMBER OF			2,000

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			889,076

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			2,000

WITH		8	SHARED DISPOSITIVE POWER

			889,076

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	891,076

10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES:

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

	4.9%

12	TYPE OF REPORTING PERSON

	IN

Neither the filing of this statement on Schedule 13G nor any of its contents shall be deemed to constitute an admission by Thomas L. Rosch that he is the beneficial owner of any of the Common Stock referred to herein for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose, and such beneficial ownership is expressly disclaimed, except to the extent of his pecuniary interest.


CUSIP No.		09064X 10 1	13G	Page		15		of		20	Pages


1	NAME OF REPORTING PERSONS Michael B. Sweeney (a Managing Director of InterWest Management Partners VIII, LLC) I.R.S. IDENTIFICATION NO(S). OF ABOVE PERSON(S) (ENTITIES ONLY)


2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
	(a) o
	(b) o

3	SEC USE ONLY



4	CITIZENSHIP OR PLACE OF ORGANIZATION

	United States

		5	SOLE VOTING POWER

NUMBER OF			0

SHARES		6	SHARED VOTING POWER
BENEFICIALLY
OWNED BY			889,076

EACH		7	SOLE DISPOSITIVE POWER
REPORTING
PERSON			0

WITH		8	SHARED DISPOSITIVE POWER

			889,076

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

	889,076

10	CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES:

	o

11	PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW (9)

	4.8%

12	TYPE OF REPORTING PERSON

	IN

Neither the filing of this statement on Schedule 13G nor any of its contents shall be deemed to constitute an admission by Michael B. Sweeney that he is the beneficial owner of any of the Common Stock referred to herein for purposes of Section 13(d) of the Securities Exchange Act of 1934, as amended, or for any other purpose, and such beneficial ownership is expressly disclaimed, except to the extent of his pecuniary interest.

ITEM 1.

(a) NAME OF ISSUER : BioMimetic Therapeutics, Inc.

(b) ADDRESS OF ISSUER’S PRINCIPAL EXECUTIVE OFFICE:

389-A Nichol Mill Lane, Franklin, TN 37067

ITEM 2.

(a) NAME OF PERSON(S) FILING:

InterWest Partners VIII, LP (“IWP VIII”)
InterWest Investors VIII, LP (“II VIII”)
InterWest Investors Q VIII, LP (“IIQ VIII”)
InterWest Management Partners VIII, LLC (“IMP VIII”)
Harvey B. Cash (“Cash”)
Christopher B. Ehrlich (“Ehrlich”)
Philip T. Gianos (“Gianos”)
W. Scott Hedrick (“Hedrick”)
W. Stephen Holmes III (“Holmes”)
Gilbert H. Kliman (“Kliman”)
H. Ronald Nash (“Nash”)
Arnold L. Oronsky (“Oronsky”)
Thomas L. Rosch (“Rosch”)
Michael B. Sweeney (“Sweeney”)

(b) ADDRESS OF PRINCIPAL BUSINESS OFFICE OR, IF NONE, RESIDENCE:

2710 Sand Hill Road, Second Floor, Menlo Park, CA 94025

(c) CITIZENSHIP/PLACE OF ORGANIZATION:


		IWP VIII:		California
		II VIII:		California
		IIQ VIII:		California
		IMP VIII:		California
		Cash:		United States
		Ehrlich:		United States
		Gianos:		United States
		Hedrick:		United States
		Holmes:		United States
		Kliman:		United States
		Nash:		United States
		Oronsky:		United States
		Rosch:		United States
		Sweeney:		United States

Page 16 of 20 Pages

(d) TITLE OF CLASS OF SECURITIES: Common Stock

(e) CUSIP NUMBER: 09064X 10 1

ITEM 3. NOT APPLICABLE.

ITEM 4. OWNERSHIP.


	IWP VIII			II VIII		IIQ VIII			IMP VIII (1)
Beneficial Ownership		857,692			6,846		24,538			889,076
Percentage of Class		4.7	%	Less than 0.1%			0.1	%		4.8	%
Sole Voting Power		857,692			6,846		24,538			889,076
Shared Voting Power		0			0		0			0
Sole Dispositive Power		857,692			6,846		24,538			889,076
Shared Dispositive Power		0			0		0			0


	Cash (2)			Ehrlich (2)**			Gianos (2)			Hedrick (2)
Beneficial Ownership		889,076			896,157			889,076			889,076
Percentage of Class		4.8	%		4.9	%		4.8	%		4.8	%
Sole Voting Power		0			7,081			0			0
Shared Voting Power		889,076			889,076			889,076			889,076
Sole Dispositive Power		0			7,081			0			0
Shared Dispositive Power		889,076			889,076			889,076			889,076


	Holmes (2)			Kliman (2)			Nash (2)
Beneficial Ownership		889,076			896,076			889,076
Percentage of Class		4.8	%		4.9	%		4.8	%
Sole Voting Power		0			7,000			0
Shared Voting Power		889,076			889,076			889,076
Sole Dispositive Power		0			7,000			0
Shared Dispositive Power		889,076			889,076			889,076


	Oronsky (2)			Rosch (2)			Sweeney (2)
Beneficial Ownership		889,076			891,076			889,076
Percentage of Class		4.8	%		4.9	%		4.8	%
Sole Voting Power		0			2,000			0
Shared Voting Power		889,076			889,076			889,076
Sole Dispositive Power		0			2,000			0
Shared Dispositive Power		889,076			889,076			889,076


**		Includes 5,831 shares issuable to Ehrlich pursuant to outstanding options exercisable within 60 days of December 31, 2007.

(1)		IMP VIII is the general partner of IWP VIII, II VIII and IIQ VIII.

(2)		Cash, Gianos, Hedrick, Holmes, Kliman, Oronsky, Rosch, and Sweeney are Managing Directors of IMP VIII. Ehrlich and Nash are Venture Members of IMP VIII.

Page 17 of 20 Pages

ITEM 5. OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS.

If this statement is being filed to report the fact that as of the date hereof the reporting person has ceased to be the beneficial owner of more than five percent of the class of securities, check the following þ

ITEM 6. OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON.

Under certain circumstances set forth in the limited liability company operating agreement of IMP VIII, the members of such limited liability company have the right to receive dividends from, or the proceeds from the sale of, the common stock of Issuer beneficially owned by such limited liability company.

ITEM 7. IDENTIFICATION AND CLASSIFICATION OF THE SUBSIDIARY WHICH ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING COMPANY.

Not applicable.

ITEM 8. IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP.

No reporting person is a member of a group as defined in section 240.13d-1(b)(1)(iii)(H) of the Act.

ITEM 9. NOTICE OF DISSOLUTION OF THE GROUP.

Not applicable.

ITEM 10. CERTIFICATION.

Not applicable.

EXHIBITS

Joint Filing Statement attached as Exhibit A.

Page 18 of 20 Pages

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.

Date: February 12, 2008


		INTERWEST PARTNERS VIII, LP

		By:	InterWest Management Partners VIII, LLC
		its General Partner

		By:	/s/ W. Stephen Holmes

			Managing Director
By:	/s/ Harvey B. Cash

Name:	Harvey B. Cash

		INTERWEST INVESTORS VIII, LP

By:	/s/ Christopher B. Ehrlich

Name:	Christopher B. Ehrlich	By:	InterWest Management Partners VIII, LLC its General Partner

By:	/s/ Philip T. Gianos

Name:	Philip T. Gianos		By:	/s/ W. Stephen Holmes

				Managing Director

By:	/s/ W. Scott Hedrick

Name:	W. Scott Hedrick

		INTERWEST INVESTORS Q VIII, LP

By:	/s/ W. Stephen Holmes

Name:	W. Stephen Holmes	By:	InterWest Management Partners VIII, LLC its General Partner

By:	/s/ Gilbert H. Kliman

Name:	Gilbert H. Kliman		By:	/s/ W. Stephen Holmes

				Managing Director

By:	/s/ H. Ronald Nash

Name:	H. Ronald Nash

		INTERWEST MANAGEMENT PARTNERS VIII, LLC

By:	/s/ Arnold L. Oronsky

Name:	Arnold L. Oronsky
		By:	/s/ W. Stephen Holmes

			Managing Director

By:	/s/ Thomas L. Rosch

Name:	Thomas L. Rosch

By:	/s/ Michael B. Sweeney

Name:	Michael B. Sweeney

Page 19 of 20 Pages

EXHIBIT A

Joint Filing Statement

We, the undersigned, hereby express our agreement that the attached Schedule 13G is filed on behalf of each of us.

Date: February 12, 2008


		INTERWEST PARTNERS VIII, LP

		By:	InterWest Management Partners VIII, LLC
		its General Partner

		By:	/s/ W. Stephen Holmes

			Managing Director
By:	/s/ Harvey B. Cash

Name:	Harvey B. Cash

		INTERWEST INVESTORS VIII, LP

By:	/s/ Christopher B. Ehrlich

Name:	Christopher B. Ehrlich	By:	InterWest Management Partners VIII, LLC its General Partner

By:	/s/ Philip T. Gianos

Name:	Philip T. Gianos		By:	/s/ W. Stephen Holmes

				Managing Director

By:	/s/ W. Scott Hedrick

Name:	W. Scott Hedrick

		INTERWEST INVESTORS Q VIII, LP

By:	/s/ W. Stephen Holmes

Name:	W. Stephen Holmes	By:	InterWest Management Partners VIII, LLC its General Partner

By:	/s/ Gilbert H. Kliman

Name:	Gilbert H. Kliman		By:	/s/ W. Stephen Holmes

				Managing Director

By:	/s/ H. Ronald Nash

Name:	H. Ronald Nash

		INTERWEST MANAGEMENT PARTNERS VIII, LLC

By:	/s/ Arnold L. Oronsky

Name:	Arnold L. Oronsky
		By:	/s/ W. Stephen Holmes

			Managing Director

By:	/s/ Thomas L. Rosch

Name:	Thomas L. Rosch

By:	/s/ Michael B. Sweeney

Name:	Michael B. Sweeney