Exhibit 10.7

      This assignment is made by Dr. Alfred T. Sapse, M.D. residing at 3525 Leor
Court, Las Vegas, Nevada 89121, ("ASSIGNOR") to Steroidogenesis Inhibitors
International, a corporation organized under the laws of the State of Nevada and
having an office at 101 Convention Center Drive, Suite 310, Las Vegas, Nevada
89109 ("ASSIGNEE").

      FOR ONE U.S. DOLLAR ($1.00) AND FOR OTHER GOOD AND VALUABLE CONSIDERATION,
the receipt of which is hereby acknowledged, ASSIGNOR does hereby sell, assign
and transfer to ASSIGNEE the entire right, title and interest, together with all
rights of priority, in and to my invention entitled CIRCADIAN RHYTHM CORTISOL
CHART AND METHODS OF USE, as described and/or claimed in an application for
patent of the United States of America, Serial No. ________. A declaration for
the application has been executed on ________________. ASSIGNOR further does
hereby sell, assign and transfer to ASSIGNEE the entire right, title and
interest, together with all rights of priority, in and to ASSIGNOR'S invention
as described and/or claimed in any and all applications for patents based on the
invention, including divisionals, continuations, renewals, substitutes and
reissues thereof, and all rights of priority resulting from any of these patent
applications, as well as all foreign counterparts and extensions thereof,
together with all patents issuing on any of these applications for the full
terms of all of the patents which may be granted on the invention.

      ASSIGNOR HEREBY AUTHORIZES ASSIGNEE to make applications for, to prosecute
such applications, and to receive patents for the invention in the United States
and any foreign countries, in ASSIGNEE's name.

      ASSIGNOR HEREBY PROMISES AND AGREES that ASSIGNOR will execute or procure
any further necessary assurance of title to the invention and any patents which
may issue on the invention. ASSIGNOR will, at any time, upon the request and
without further consideration, but at the expense of ASSIGNEE, deliver any
testimony in any legal proceedings and execute all papers and do all other
things that may be necessary or desirable to perfect the title to the invention,
or any patents which may be granted therefor, in ASSIGNEE, its successors,
assigns, or other legal representatives. ASSIGNOR will, at any time, upon the
request and at the expense of ASSIGNEE, execute any continuations, divisionals,
reissues, or any other additional applications for patents for the invention or
any part or parts thereof and any patents issuing thereon are hereby assigned to
ASSIGNEE. ASSIGNOR will make all rightful oaths, and do all lawful acts required
for procuring and enforcing any of the patents, without further compensation,
but at the expense of ASSIGNEE, its successors, assigns or other legal
representatives.

      ASSIGNOR HEREBY AUTHORIZES AND REQUESTS the Commissioner of Patents and
Trademarks to issue any and all Letters Patent of the United States for the
invention, resulting from any of the aforesaid applications to the ASSIGNEE.

                                             Dr. Alfred T. Sapse, M.D., ASSIGNOR


                                     Page 1
<PAGE>

STATE OF NEVADA         :
                        :       SS:
COUNTY OF CLARK         :

      Before me personally appeared Dr. Alfred T. Sapse, M.D., to me known to be
the same person described in and who executed the foregoing instrument, and
acknowledged that he executed the same, of his own free will and for the
purposes set forth.

      Sworn to before me and subscribed in my presence this 15th of July, 1999.

                                                        Sarah H. Thompson
                                                        Notary Public


                                     Page 2
<PAGE>

                                   ASSIGNMENT

      This assignment is made by Steroidogenesis Inhibitors, Inc., a corporation
organized under the laws of the State of Nevada and having an office at 101
Conventin Center Drive, Suite 310, Las Vegas, Nevada 89109 ("ASSIGNOR") to
Steroidogenesis Inhibitors International, a corporation organized under the laws
of the State of Nevada and having an office at 101 Conventin Center Drive, Suite
310, Las Vegas, Nevada 89109 ("ASSIGNEE").

      FOR ONE U.S. DOLLAR ($1.00) AND FOR OTHER GOOD AND VALUABLE CONSIDERATION,
the receipt of which is hereby acknowledged, ASSIGNOR does hereby sell, assign
and transfer to ASSIGNEE the entire right, title and interest, together with all
rights of priority, in and to my invention entitled COMPOSITION OF ANTI-HIV
DRUGS AND ANTI-CORTISOL COMPOUNDS AND METHOD FOR DECREASING THE SIDE EFFECTS OF
ANTI-HIV DRUGS IN A HUMAN, as described and/or claimed in an application for
patent of the United States of America, Serial No. 09/234,532, filed January 21,
1999. ASSIGNOR further does hereby sell, assign and transfer to ASSIGNEE the
entire right, title and interest, together with all rights of priority, in and
to ASSIGNOR'S invention as described and/or claimed in any and all applications
for patents based on the invention, including divisionals, continuations,
renewals, substitutes and reissues thereof, and all rights of priority
resulting, from any of these patent applications, as well as all foreign
Counterparts and extensions thereof, together with all patents issuing on any of
these applications for the full terms of all of the patents which may be granted
on the invention.

      ASSIGNOR HEREBY AUTHORIZES ASSIGNEE to make applications for, to prosecute
such applications, and to receive patents for the invention in the United States
and any foreign countries, in ASSIGNEE's name.

      ASSIGNOR HEREBY PROMISES AND AGREES that ASSIGNOR will execute or procure
any further necessary assurance of title to the invention and any patents which
may issue on the invention. ASSIGNOR will, at any time, upon the request and
without further consideration, but at the expense of ASSIGNEE, deliver any
testimony in any legal proceedings and execute all papers and do all other
things that may be necessary or desirable to perfect the title to the invention,
or any patents which may be granted therefor, in ASSIGNEE, its successors,
assigns, or other legal representatives.

      ASSIGNOR HEREBY AUTHORIZES AND REQUESTS the Commissioner of Patents and
Trademarks to issue any and all Letters Patent of the United States for the
invention, resulting from any of the aforesaid applications to the ASSIGNEE.

                                             Steroidogenesis Inhibitors, Inc.


                                             ----------------------------------
                                                Alfred T. Sapse, for assignor


                                     Page 1
<PAGE>

STATE OF NEVADA                 :
                                :       SS:
COUNTY OF CLARK                 :

      Before me personally appeared, Dr. Alfred T. Sapse, to me known to be the
same person described in and who executed the foregoing instrument, and
acknowledged that he executed the same, of his own free will and for the
purposes set forth.

Sworn to before me and subscribed in my presence this 15th of July 1999.

                                                      Sarah H. Thompson
                                               ---------------------------------
                                                       Notary Public


                                     Page 2