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                                                                   EXHIBIT 10.30

                        IDEC PHARMACEUTICALS CORPORATION
                           DEFERRED COMPENSATION PLAN


THIS DEFERRED COMPENSATION PLAN is adopted by IDEC Pharmaceuticals Corporation a
Delaware corporation (the "Company"), effective as of January 1 1999, with
reference to the following:

        A.      The Company is establishing this plan to provide key employees
                and non-employee Board members a tax deferred, capital
                accumulation, retention program.

        B.      This Plan is intended to provide benefits to a select group of
                management or highly compensated personnel in order to attract
                and retain the highest quality executives. This Plan is not
                intended to be a qualified plan within the meaning of sections
                401(a) and 501(a) of the Internal Revenue Code of 1986, as
                amended (the "Code").

        C.      This Plan is intended to be an unfunded plan for purposes of the
                Employee Retirement Income Security act of 1975, as amended
                ("ERISA").

NOW, THEREFORE, the Company hereby adopts the IDEC Pharmaceuticals Corporation
Deferred Compensation Plan on the following terms and conditions:

        1.0     Definitions. Whenever used in this Plan, the following words and
                phrases shall have the same meaning set forth below, unless a
                different meaning is expressly provided or plainly required by
                the context in which the words or phrases are used:

        1.1     Beneficiary means a person designated by a Participant to
                receive Plan benefits in the event of the Participant's death.

        1.2     Board means the Board of Directors of the Company and its
                successors.

        1.3     CFO means the Chief Financial Officer of the Company and their
                successors.

        1.4     Change in Control of Company means:

                (A)     a change in ownership, or power to vote such that 35% or
                        more of the voting stock of the Company is concentrated
                        in the hands of any one person, entity or group of
                        related persons or entities or group of persons or
                        entities acting in concert;

                (B)     a change in the composition of the Board as a result of
                        which individuals serving on the Board immediately prior
                        to such change cease to constitute at least a majority
                        thereof;

                (C)     the stockholders of the Company approved any plan or
                        proposal for the liquidation or dissolution of the
                        Company;



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                (D)     substantially all of the assets of the Company are sold
                        or otherwise transferred to parties that are not within
                        the "controlled group or corporations" (as defined in
                        section 1563 of the Internal Revenue Code of 1986) in
                        which the Company is a member.

        1.5     Company means IDEC Pharmaceuticals Corporation a Delaware
                corporation

        1.6     Disability means:

                (A)     "disability" as defined in any group long-term
                        disability policy or program sponsored by the Company
                        and in effect at the time a Participant who has suffered
                        a physical or mental impairment makes application under
                        this Plan for a disability distribution, or

                (B)     if no such policy or program is in force at such time,
                        "disability" as defined in section 1392c(a)(3) of volume
                        42 of the United States Code and regulations promulgated
                        thereunder, provided, however, that the disability
                        (whether under the definition in (a) or in (b)) must be
                        of a duration of at least six (6) consecutive months
                        from the date the Participant suffers the disability
                        notwithstanding any different requirements of duration
                        under either definition in the actual policy or program
                        or in the United States Code, respectively.

                        A Participant who has suffered a Disability shall be
                        disabled within the meaning of this Section 1.6.

                        The determination of whether a Participant is disabled
                        within the meaning of this Section 1.6 shall be made by
                        the CFO. A Participant who believes they have suffered a
                        disability within the meaning of this Section 1.6 shall
                        make application to the CFO, on a form prescribed by the
                        CFO, for a determination of whether they are disabled
                        under the terms of this Section 1.6. The Participant
                        shall make such written application to the CFO on or
                        after the date which is at least five (5) consecutive
                        months following the date they first suffered the
                        impairment under consideration. Any determination by the
                        CFO that a disability exists under the provisions of
                        this Section 1.6 shall be effective only after the date
                        the disability has existed for six (6) consecutive
                        months. All determinations made by the CFO shall be
                        final, and no Participant shall be considered disabled
                        for any purpose whatsoever under the provisions of this
                        Plan if determined not to be disabled by the CFO under
                        the procedures set forth in this Section 1.6.

                        The CFO shall notify each Participant who has made
                        application under this Section 1.6, in writing, for
                        their determination within three (3) months of the date
                        the CFO receives the Participant's application
                        hereunder. The Participant shall cooperate in providing
                        any information to the CFO which it requires in making
                        its determination, including, but not limited to, access
                        to the Participant's medical records, direct contact
                        with their physician and physical examination by a
                        physician selected by the Company. Any Participant who
                        does not fully cooperate shall be deemed not disabled by
                        the CFO and so notified.



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                1.7     Key Employee means an employee of the Company, selected
                        by the CFO, who is a member of a select group of
                        management or highly compensated employees within the
                        meaning of Section 2520.104-23 of the Department of
                        Labor ERISA Regulations.

                1.8     Normal Retirement Age means the later of age 60 or five
                        years of participation in this Plan.

                1.9     Participant means:

                        (A)     a key employee designated by the CFO, in
                                writing, to participate in the benefits under
                                the Plan who timely files a written election
                                pursuant to Section 2.4, below, and

                        (B)     a former Employee who, at the time of their
                                termination from employment, retirement, death
                                or occurrence of disability, retains, or whose
                                beneficiary retains, benefits earned under the
                                Plan in accordance with its terms. A Participant
                                is considered an active participant in the Plan
                                until the earliest of the following:

                                (i)     the Participant retires, dies or becomes
                                        disabled under the terms of this Plan;
                                        or

                                (ii)    the Participant is determined or
                                        believed by the CFO to no longer qualify
                                        as a member of a "select group of highly
                                        compensated or management employees" and
                                        such Participant has received
                                        distribution of their entire benefit
                                        hereunder; or

                                (iii)   the participant terminates employment
                                        with the Company.

        1.10    Plan means the IDEC Pharmaceuticals Corporation Deferred
                Compensation Plan established by this document.

        1.11    Plan Year means the period which is the same as the calendar
                year.

        1.12    Plan Year Compensation means the total income paid to an active
                Participant by the Company during any Plan Year, or portion
                thereof in which they are a Participant in this Plan, as
                reflected on the Participant's form W-2. For purposes of the
                elections under Section 2.4 of this Plan, Plan Year Compensation
                shall consist of one or more of the following types of income:
                annual base salary or annual bonus.

        2.0     Participation.

        2.1     Eligibility. A Key Employee of the company is eligible to
                participate in this Plan on the entry date first following the
                date as of which both of the following events have occurred:

                (A)     the CFO has designated an individual in writing as a
                        Participant in the Plan, and



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                (B)     the Key Employee has made a written election in
                        accordance with the terms of Section 2.4 below.

        2.2     Entry Date. Any Key Employee who has met the eligibility
                requirements specified in Section 2.1 as of the effective date
                of this Plan shall become a Participant in the Plan as of the
                first day of the Plan Year following their hire date. Any Key
                Employee of the Company who meets the eligibility requirements
                specified in Section 2.1 after the effective date of this Plan
                shall become a Participant in the Plan immediately upon the date
                on which they have met the eligibility requirements.

        2.3     Designation. The CFO shall designate for each Plan Year, in
                writing, the name of each Key Employee who shall be entitled to
                participate in the Plan for the Plan Year. Such designation by
                the CFO shall occur on a date such that each designated Key
                Employee shall have sufficient time to make their written
                election as required by Section 2.4 below.

        2.4     Written Election by Participant. Each Key Employee designated by
                the CFO as a Participant for a Plan Year shall submit a written
                election prior to the first day of the Plan Year in which they
                will be a Participant.

                (A)     Such written election shall be made on the form
                        presented to the Key Employee by the Plan Committee and
                        shall set forth:

                        (i)     their election to participate in this Plan under
                                the terms hereof;

                        (ii)    the amount of Plan Year Compensation the Key
                                Employee has determined to defer under the Plan
                                for the Plan Year, pursuant to Section 3.1
                                below;

                        (iii)   the date on which their benefit is to be
                                distributed which is the earlier of (a) the date
                                specified for an In-Service Withdrawal or (b)
                                the later of (i) a specific date or (ii) when
                                they terminate employment with the Company due
                                to termination of service, retirement,
                                disability or death;

                        (iv)    the form in which their benefit is to be
                                distributed upon termination of service or
                                retirement.

                (B)     A Participant's most recently submitted written election
                        shall remain in effect for subsequent Plan Years until
                        the Participant changes it in accordance with the
                        following:

                        (i)     A Participant may change the amount of Plan Year
                                Compensation they will defer under the Plan for
                                future Plan Years by submitting a new written
                                election to the Company. Such new election must
                                be submitted to the Company on or before the
                                seventh (7th) day immediately proceeding the
                                Plan Year for which the new election is to be
                                effective. Any election of the amount of Plan
                                Year Compensation to defer for a given Plan Year
                                shall be irrevocable on and after the first day
                                of the Plan Year for which the election was
                                made.

                        (ii)    A Participant may change the date or form of
                                distribution by submitting a new written
                                election to the Company, provided that such
                                change is submitted at least sixty (60) days
                                prior to the



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                                original date of distribution, the new date of
                                distribution is subsequent to the original date
                                of distribution, and only one change may be made
                                after the original election.

        2.5     Duration of Participant. Any Key Employee who has become a
                Participant at any time shall remain a Participant, even though
                they are no longer an active Participant, until their entire
                benefit under the terms of the Plan has been paid to them (or to
                their Beneficiary in the event of their death), at which time
                they cease to be a Participant.

        2.6     Maintenance of Records. The annual Designation of Participants
                by the CFO shall be maintained in the corporate minute book. The
                written elections by Participants shall be maintained in the
                corporate records with all other files pertaining to this Plan
                by the CFO.

        3.0     Contributions and Allocations.

        3.1     Participant Contributions. A Participant may elect to defer each
                Plan Year a portion, up to 80%, of their Plan Year Compensation,
                provided that a Participant may not defer an amount less than
                the minimum established from year to year by the CFO. For the
                initial Plan Year, such minimum shall be $5,000. Such election
                shall designate the amount of income deferred during the Plan
                Year, in actual dollar amounts or percentages. Once a
                Participant's contributions for a Plan Year reach their elected
                dollar amount or percentages, such Participant shall not be
                allowed to defer additional portions of their Plan Year
                Compensation for the remainder of the Plan Year. Any deferred
                amounts in excess of their elected dollar amount shall be
                refunded to the Participant as soon as practicable.

        3.2     Allocation of Contributions. All amounts which a Participant
                elects to defer under the terms of this Plan shall be allocated
                to their Account. Each such Participant Account shall be
                credited with earnings as provided in Section 3.3 below.

        3.3     Credited Earnings. The account of each Participant shall be
                credited with interest. During the first five years of
                participation in the Plan by a Participant the account will be
                credited with interest at a rate of 7% per annum compounded
                quarterly. Upon completion of five years of participation in the
                plan by the Participant the Participant's account will be
                credited 9% per annum compounded annually. Additionally the
                interest rate of 9% will be applied retroactively to all
                contributions made during the first five years of participation.

        3.4     Forfeitures. If any amount of Participants contributions are
                forfeited in any year, such forfeited amounts shall be returned
                to the Company.

        3.5     Funding. The assets of the Plan shall be held by the Company. As
                such, the Plan is intended to be an unfunded plan for purposes
                of the requirements of ERISA and the Code.

                Notwithstanding the provisions under the terms of the Plan the
                amounts contributed to this Plan, plus earnings thereon, shall
                be allocated to separate accounts of Participants, all such
                amounts credited to such individual accounts



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                shall remain the general assets of the Employer, and as such
                shall remain subject to the claims of the general creditors of
                the Company. This Plan does not create, nor does any Employee,
                Participant or Beneficiary have, any right with respect to any
                specific assets of the Company or the Plan.

        4.0     Vest of Accounts. The Account of each Participant shall be 100%
                vested in such Participant at all times, provided that a portion
                of such accounts shall be forfeited in accordance with Unplanned
                In-Service Distribution of Section 6.3.

        5.0     Types of Benefits.

        5.1     Retirement Benefit. A Participant's Retirement Benefit is the
                unpaid balance of their Account which equals the total of all
                contributions made by the Participant and allocated to their
                account and all earnings credited to their account in accordance
                with the terms of the Plan less any distributions already paid.

        5.2     Termination of Service Benefit. If a Participant elects to
                receive their retirement benefit upon termination of their
                employment with the Company, or if a Participant's employment
                with the Company terminates prior to distribution of their
                In-Service Benefit, the Company will pay retirement benefit,
                calculated under Section 5.1, under the applicable form elected
                by the Participant in their written election.

        5.3     Disability Benefit. If a Participant becomes disabled as defined
                in Section 1.5 above, the Company will pay their retirement
                benefit, calculated under Section 5.1, under the applicable form
                elected by the Participant in their written election.

        5.4     Death Benefit.

                (A)     If a Participant dies after a distribution has commenced
                        or if the Company has not purchased a life insurance
                        contract in connection with the Participant's Retirement
                        Benefit, the Company will continue the payments of such
                        distribution otherwise due to the Participant to their
                        designation Beneficiary, under the applicable form
                        elected by the participant in their written election.

                (B)     If a Participant dies while still employed by the
                        Company and the Company has purchased a life insurance
                        contact in connection with such Participant's Retirement
                        Benefit, the Company will pay the Participant's
                        designated Beneficiary the greater of their Retirement
                        Benefit as determined under Section 5.1 above or their
                        projected retirement benefit (as defined below), under
                        the applicable form elected by the Participant in their
                        written election. "Projected Retirement Benefit" means
                        the amount determined by projecting the Participant's
                        contribution for the Participant's first year of
                        participation hereunder at an assumed earnings rate of
                        9% to retirement at normal retirement age.

        5.5     In-Service Withdrawal. A Participant may designate a date in the
                future for receipt of an in-Service Withdrawal with respect to
                the Participant's contribution for a given Plan Year. Such
                withdrawal may be paid while the Participant remains employed
                with the Company, but shall be paid without credited earnings



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                attributable to such Participant Contribution (which credited
                earnings shall be distributed upon termination of employment or
                retirement) in four (4) equal yearly installments commencing on
                January 15 of the fourth Plan Year following the Plan Year of
                deferral (the "In-Service Commencement Year"); provided,
                however, that a Participant may elect to defer commencement of
                an In-Service Withdrawal for an additional three years by
                delivery to the Company of a written election not later than the
                last day of the Plan year prior to the Plan Year immediately
                preceding the In-Service Commencement Year.

        5.6     Unplanned In-Service Benefit. A Participant may elect to receive
                their Retirement Benefit as an Unplanned In-Service Benefit at
                any time by providing the Plan Committee with a written election
                to do so. In consideration for receiving an Unplanned in-Service
                Benefit, such Participant shall permanently forfeit an amount
                equal to ten percent (10%) of their retirement benefit and forgo
                all future participation in the Plan.

        5.7     Financial Hardship Benefit. A Participant may request a portion
                of their retirement benefit as a financial hardship benefit at
                any time by providing the Plan Committee, to its satisfaction,
                with a written election to do so, proof of an unforeseeable
                financial hardship, and proof that all other financial resources
                have been explored and utilized. The amount of a financial
                hardship benefit shall be limited to the lesser of the amount
                needed for the financial hardship or such Participant's
                retirement benefit. In consideration for receiving a financial
                hardship benefit, the Participant will not be permitted to make
                further contributions to the Plan for the remainder of the Plan
                Year and the following Plan Year.

        6.0     Distributions.

        6.1     Forms of Benefits. The Company shall pay benefits in the form
                associated with type of benefit elected by the Participant, and,
                to the extent a type of benefit may be distributed in various
                forms, the Company shall pay benefits in the form elected by the
                Participant. The forms of benefits associated with the types of
                benefits are the following:

                (A)     Retirement Benefit, Termination of Service Benefit,
                        Disability Benefit, and Death Benefit shall be paid in

                        (i)     one lump sum;
                        (ii)    5 yearly installments;
                        (iii)   10 yearly installments; or
                        (iv)    15 yearly installments;

                (B)     In-Service Withdrawal shall be paid as provided in
                        Section 5.5 above;

                (C)     Unplanned In-Service Benefit shall be paid in one lump
                        sum; and

                (D)     Financial Hardship Benefit shall be paid in one lump
                        sum.

        6.2     Commencement of Payments. The Company will pay, or begin to pay,
                the Types of Benefits under this Plan to the Participant in
                accordance with the following:



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                (A)     Retirement Benefit, Termination of Service Benefit,
                        Disability Benefit and Death Benefit payments shall
                        commence on the later of

                        (i)     The date specified in the Participant's initial
                                election form or

                        (ii)    January 15th of the Plan Year immediately
                                following the date on which the Participant
                                retires, terminates service, becomes disabled,
                                or dies;

                (B)     In-Service Withdrawal payments shall commence on the
                        date designated by the Participant on their written
                        election pursuant to Section 2.4, provided that such
                        payments are from Participant contributions that have
                        been in such Participant's account for at least three
                        years;

                (C)     Unplanned In-Service Benefit payments shall commence no
                        later than sixty-five (65) days after a written request
                        for an Unplanned In-Service Benefit is received by the
                        Committee;

                (D)     Financial Hardship Benefit payments shall commence no
                        later than sixty-five (65) days after a request for a
                        Financial Hardship Benefit is approved by the Plan
                        Committee.

        7.0     Amendments, Termination of Plan, Change of Control.

        7.1     Amendments. The Company reserves the right to amend the Plan at
                any time by resolution of the CFO. The CFO will determine the
                effective date of any such amendment. The amendment may not
                deprive any Participant or Beneficiary of any portion of a
                benefit under the terms of this Plan at the time of the
                amendment.

        7.2     Termination of Plan. The Company reserves the right to terminate
                the Plan at any time by resolution of the CFO. In the event of
                Plan termination, the Company will calculate the Retirement
                Benefit of each Participant and distribute such amounts to the
                Participant or Beneficiary in a lump sum within thirty (30) days
                of the Plan's termination.

        7.3     Change in Control. In the event of a Change in Control, the Plan
                shall terminate and the provisions in Section 7.2 shall control.

        8.0     Benefits not Funded. Participants and Beneficiaries have the
                status of unsecured creditors of the Company, and the Plan
                constitutes a mere promise by the Company to make benefit
                payments in the future. A Participant's or Beneficiary's
                interest in the Plan is an unsecured claim against the general
                assets of the Company, and neither the Participant nor a
                Beneficiary has any right against the account until the Plan has
                distributed the benefit. All amounts credited to an account are
                the general assets of the Company and may be disposed of or used
                by the Company in such manner as it determines.

                It is the intention of the parties that this Plan shall
                constitute an unfunded arrangement maintained for the purpose of
                providing deferred compensation for a select group of management
                or highly compensated employees for purposes of Title I of the
                Employee Retirement Income Security Act of 1974.



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        9.0     Miscellaneous.

        9.1     Designation of Beneficiary. Each Participant shall designate, in
                writing, prior to the date they first become a Participant in
                the Plan, one or more beneficiaries to receive their benefits
                under the provisions of Section 5.4. The Participant shall file
                the written designation with the Plan Committee. The Participant
                may revoke a previous beneficiary designation by filing a new
                written beneficiary designation with the Plan Committee.

                In any event, if a Participant or Beneficiary who has designated
                another beneficiary is divorced, all beneficiary designation
                executed prior to the effective date of the dissolution of
                marriage (or other decree or order entered under applicable
                state law) are automatically revoked under the term of this
                Section 9.1. In such event, the Participant or Beneficiary may
                designate one or more Beneficiaries in accordance with the terms
                of this Section 9.1. If none is made following the effective
                date of the dissolution of the marriage, the individual's
                benefits shall pass under the laws of interstate succession and
                the terms of the next following paragraph.

                If a Participant fails to file a valid designation of
                beneficiary with the Plan Committee under the provisions of this
                Section 9.1, or if a designated beneficiary fails to survive or
                receive any or all payments due hereunder, then the death
                benefit payable under this Plan shall be payable to the
                Participant's (or the Beneficiary's) spouse; if no spouse
                survives, then the Participant's (or Beneficiary's) children,
                with equal shares among living children and with the living
                descendants of a deceased child receiving equal portions of the
                deceased child's share; in the absence of spouse or descendants,
                to the Participant's (or Beneficiary's) parents; and in the
                absence of spouse, descendants or parents, to the Participant's
                (Beneficiary's) brothers and sisters, with the living
                descendants of a deceased brother and those of a deceased sister
                receiving equal portions of the deceased brother's or sister's
                share; in the absence of any of the persons name herein, to the
                Participant's (or beneficiary's) estate.

                For purposes of this Section 9.1, the term "descendant" means
                all persons who are descended from the person referred to either
                by birth or to legal adoption by such person, and "child" or
                "children" includes adopted children.

        9.2     Benefits Not Assignable. The rights of each Participant are not
                subject in any manner or anticipation, alienation, sale,
                transfer, assignment, pledge, encumbrance, attachment, or
                garnishment by creditors of the Participant nor any Beneficiary.
                Neither the Participant nor Beneficiary may assign, transfer or
                pledge the benefits under this Plan. Any attempt to assign,
                transfer or pledge a Participant's benefits under this Plan is
                void.

        9.3     Benefit. This Plan constitutes an agreement between the Company
                and each of the Participants which is binding upon and inures to
                the Company, its successors and assigns and upon the Participant
                and their heirs and legal representatives



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        9.4     Headings. The headings of the Articles and Sections of this Plan
                are included for purposes of convenience only, and shall not
                affect the construction or interpretation of any of its
                provisions.

        9.5     Notices. All notices requests, demands, and other communication
                under this Plan shall be in writing and shall be deemed to have
                been duly given on the date of service if served personally on
                the party to whom notice is to be given, or on the third day
                after mailing if mailed to the party to whom notice is to be
                given, by first class mail, registered or certified (return
                receipt requested), postage prepaid, and properly addressed to
                the last known address to each party as set forth on the first
                page thereof. Any party may change its address for purposes of
                this Section by giving the other parties written notice of the
                new address in the manner set forth above.

        9.6     No Loans. The Plan does not permit any loans to be made to any
                Participant or Beneficiary.

        9.7     Gender Usage. The use of the masculine gender includes the
                feminine gender for all purposes of this Plan.

        9.8     Expenses. Costs of administration of the Plan shall be paid by
                the Company.


                IN WITNESS WHEREOF, the Company has adopted the Plan on
                _________________, 19__, effective January 1, 1999.


                                            IDEC PHARMACEUTICALS CORPORATION


                                            By: /s/ Phillip M. Schneider
                                               ---------------------------------
                                               Phillip M. Schneider
                                               Vice President and Chief
                                               Financial Officer