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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 13G

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

Aspreva Pharmaceuticals Corporation

(Name of Issuer)

Common Shares, no par value, and associated share purchase rights

(Title of Class of Securities)

04538T 10 9

(CUSIP Number)

December 31, 2006

(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.		04538T 10 9		Page		2		of		9


1	NAMES OF REPORTING PERSONS:

	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):
	Michael R. Hayden

2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):
	(a) o
	(b) þ

3	SEC USE ONLY:



4	CITIZENSHIP OR PLACE OF ORGANIZATION:

	Vancouver, British Columbia, Canada

		5	SOLE VOTING POWER:

NUMBER OF			228,366

SHARES		6	SHARED VOTING POWER:
BENEFICIALLY
OWNED BY			446,949^{1, 2}

EACH		7	SOLE DISPOSITIVE POWER:
REPORTING
PERSON			228,366

WITH:		8	SHARED DISPOSITIVE POWER:

			446,949^1, 2

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

	876,737^1, 2

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

	Not applicable.

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

	2.5%^1, 2

12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

	IN


CUSIP No.		04538T 10 9		Page		3		of		9


1	NAMES OF REPORTING PERSONS:

	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):
	Sandra Hayden

2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):
	(a) o
	(b) þ

3	SEC USE ONLY:



4	CITIZENSHIP OR PLACE OF ORGANIZATION:

	Vancouver, British Columbia, Canada

		5	SOLE VOTING POWER:

NUMBER OF			201,422

SHARES		6	SHARED VOTING POWER:
BENEFICIALLY
OWNED BY			238,920¹

EACH		7	SOLE DISPOSITIVE POWER:
REPORTING
PERSON			201,422

WITH:		8	SHARED DISPOSITIVE POWER:

			238,920¹

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

	668,708¹

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

	Not applicable.

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

	1.9%¹

12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

	IN


CUSIP No.		04538T 10 9		Page		4		of		9


1	NAMES OF REPORTING PERSONS:

	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):
	Hayden Family Trust

2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):
	(a) o
	(b) þ

3	SEC USE ONLY:



4	CITIZENSHIP OR PLACE OF ORGANIZATION:

	British Columbia, Canada

		5	SOLE VOTING POWER:

NUMBER OF			0

SHARES		6	SHARED VOTING POWER:
BENEFICIALLY
OWNED BY			238,920

EACH		7	SOLE DISPOSITIVE POWER:
REPORTING
PERSON			0

WITH:		8	SHARED DISPOSITIVE POWER:

			238,920

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

	238,920

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

	Not applicable.

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

	0.7%

12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

	OO


CUSIP No.		04538T 10 9		Page		5		of		9


1	NAMES OF REPORTING PERSONS:

	I.R.S. IDENTIFICATION NOS. OF ABOVE PERSONS (ENTITIES ONLY):
	Genworks Inc.

2	CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP (SEE INSTRUCTIONS):
	(a) o
	(b) þ

3	SEC USE ONLY:



4	CITIZENSHIP OR PLACE OF ORGANIZATION:

	Nova Scotia

		5	SOLE VOTING POWER:

NUMBER OF			0

SHARES		6	SHARED VOTING POWER:
BENEFICIALLY
OWNED BY			208,029

EACH		7	SOLE DISPOSITIVE POWER:
REPORTING
PERSON			0

WITH:		8	SHARED DISPOSITIVE POWER:

			208,029

9	AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON:

	208,029

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

	Not applicable.

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

	0.6%

12	TYPE OF REPORTING PERSON (SEE INSTRUCTIONS):

	OO

Item 1.

	(a)		Name of Issuer

			Aspreva Pharmaceuticals Corporation

	(b)		Address of Issuer’s Principal Executive Offices

			1203-4464 Markham Street, Victoria, British Columbia, Canada V8Z 7X8

Item 2.

	(a)		Name of Person Filing

			Michael R. Hayden Sandra Hayden Hayden Family Trust Genworks Inc.

	(b)		Address of Principal Business Office or, if none, Residence

			c/o Aspreva Pharmaceuticals Corporation 1203-4464 Markham Street, Victoria, British Columbia, Canada V8Z 7X8

	(c)		Citizenship


Michael R. Hayden		Vancouver, British Columbia, Canada
Sandra Hayden		Vancouver, British Columbia, Canada
Hayden Family Trust		British Columbia, Canada
Genworks Inc.		Nova Scotia

	(d)		Title of Class of Securities

			Common Shares, no par value, and associated share purchase rights

	(e)		CUSIP Number

			04538T 10 9

Item 3. If this statement is filed pursuant to §§240.13d-1(b), or 240.13d-2(b) or (c), check whether the person filing is a:

	(a)		Broker or Dealer registered under Section 15 of the Act (15 U.S.C. 78o);

	(b)		Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);

	(c)		Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);

	(d)		Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);

	(e)		An investment adviser in accordance with §240.13d-1(b)(1)(ii)(E);

	(f)		An employee benefit plan or endowment fund in accordance with §240.13d-1(b)(1)(ii)(F);

	(g)		A parent holding company or control person in accordance with §240.13d-1(b)(ii)(G);

	(h)		A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);

	(i)		A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);

	(j)		Group, in accordance with §240.13d-1(b)(1)(ii)(J).

Page 6 of 9

Item 4. Ownership

Provide the following information regarding the aggregate number and percentage of the class of securities of the issuer identified in Item 1.


(a	)	Amount Beneficially Owned:
		Michael R. Hayden	876,737	^1, ²
		Sandra Hayden	668,708	¹
		Hayden Family Trust	238,920
		Genworks Inc.	208,029
(b	)	Percent of Class:
		Michael R. Hayden	2.5	%^{1, 2}
		Sandra Hayden	1.9	%¹
		Hayden Family Trust	0.7	%
		Genworks Inc.	0.6	%
(c	)	Number of shares as to which the person has:
		(i) Sole power to vote or to direct the vote:
		Michael R. Hayden	228,366
		Sandra Hayden	201,422
		Hayden Family Trust	0
		Genworks Inc.	0
		(ii) Shared power to vote or to direct the vote:
		Michael R. Hayden	446,949	^{1, 2}
		Sandra Hayden	238,920	¹
		Hayden Family Trust	238,920
		Genworks Inc.	208,029
		(iii) Sole power to dispose or to direct the disposition of:
		Michael R. Hayden	228,366
		Sandra Hayden	201,422
		Hayden Family Trust	0
		Genworks Inc.	0
		(iv) Shared power to dispose or to direct the disposition of:
		Michael R. Hayden	446,949	^{1, 2}
		Sandra Hayden	238,920	¹
		Hayden Family Trust	238,920
		Genworks Inc.	208,029


¹		By virtue of their status as trustees of the Hayden Family Trust (the “*Trust*”), each of Michael R. Hayden and Sandra Hayden may be deemed to have shared beneficial ownership of the 238,920 shares held by the Trust.

²		By virtue of his status as sole stockholder of Genworks Inc. (“*Genworks*”), Michael R. Hayden may be deemed to have beneficial ownership of the 208,029 shares held by Genworks.

Page 7 of 9


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

		Not applicable.

Item 7.		Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on By the Parent Holding Company or Control Person.

		Not applicable.

Item 8.		Identification and Classification of Members of the Group

		Not applicable.

Item 9.		Notice of Dissolution of a Group

		Not applicable.

Item 10.		Certification

		Not applicable.

Page 8 of 9

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.


		February 19, 2007
		Date



	/s/ Michael R. Hayden
	Michael R. Hayden



	/s/ Sandra Hayden
	Sandra Hayden


	Hayden Family Trust
	By:	Michael R. Hayden and Sandra Hayden,
		Co-Trustees of the Hayden Family Trust



	By:	/s/ Michael R. Hayden
		Michael R. Hayden, Trustee



	By:	/s/ Sandra Hayden
		Sandra Hayden, Trustee


	Genworks Inc.
	By:	/s/ Michael R. Hayden
		Michael R. Hayden, Sole Stockholder

Page 9 of 9

Aspreva Pharmaceuticals CORP SC 13G/A