Exhibit 10.19

ALLOS THERAPEUTICS, INC.

SEVERANCE BENEFIT PLANAdopted: January 16, 2001
Amended and Restated: December 13, 2010

1.     INTRODUCTION.

The purpose of this Severance Benefit Plan (the "Plan") is to provide for the payment of severance benefits to certain eligible employees of Allos
Therapeutics, Inc. (the "Company") whose employment with the Company is involuntarily terminated and who suffer a period of unemployment as a result of such involuntary termination. Except as
set forth herein with respect to individual separation agreements, this Plan shall supersede any severance benefit plan, policy or practice previously maintained by the Company. This Plan is intended
to be a welfare benefit plan described under
Section 3(1) of the Employee Retirement Income Security Act of 1974 ("ERISA"). For the purposes of this Plan, "Severance Benefit Schedule" means the applicable severance benefit schedule(s)
approved from time to time by the Company's Board of Directors and attached hereto.

2.     ELIGIBILITY FOR BENEFITS.

(a)    General Rules.Subject to the requirements set forth in this Section, the Company will grant severance
benefits under the Plan to Eligible Employees.



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(b)    Exceptions.An employee who otherwise is an Eligible Employee will not receive benefits under the Plan in
any of the following circumstances:



3.     AMOUNT OF BENEFIT.

(a)Severance benefits payable under this Plan shall be as specified on the applicable Severance Benefit Schedule, which
shall be determined by the Company and may be amended by the Company from time to time.

(b)Notwithstanding any other provision of the Plan to the contrary, the total severance payments to any Eligible Employee
under this Plan shall not exceed two times the Eligible Employee's annual compensation earned during the calendar year immediately preceding the Eligible Employee's termination of employment
(calculated on an annualized basis).

(c)Notwithstanding any other provision of the Plan to the contrary, any benefits payable to an Eligible Employee under this
Plan shall be offset, to the maximum extent permitted by law, by any severance benefits payable by the Company to such individual under any other arrangement covering the individual.

4.     TIME OF PAYMENT AND FORM OF BENEFIT; INDEBTEDNESS.

(a)The Company will pay the severance benefits under the Plan, subject to applicable tax withholdings, in a single lump sum
on the 60thday following the Eligible Employee's termination date.

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(b)If a terminating employee is indebted to the Company at his or her termination date, the Company reserves the right to
offset any severance payments under the Plan by the amount of such indebtedness.

5.     REEMPLOYMENT.

In the event of an Eligible Employee's reemployment by the Company, or an affiliate of the Company, during the Severance Period (as defined in the next
paragraph), such Eligible Employee will be required to repay to the Company a prorated portion of the total cash benefits received by the Eligible Employee under this Plan. The prorated portion of
such cash benefits that must be repaid by the Eligible Employee is an amount equal to such cash benefits received under this Plan by the Eligible Employee upon his or her termination of employment
multiplied by a fraction, the numerator of which is the number of weeks in the Severance Period reduced by the number of weeks between the Eligible Employee's termination of employment date and the
Eligible Employee's rehire date, and the denominator of which is the Eligible Employee's Severance Period. In determining the numerator for purposes of such fraction, if the numerator is not a whole
number, then the numerator shall be rounded down to the next smallest whole number of weeks.

For
purposes of this Section 5 and Section 8, the "Severance Period" is the period equal to the number of weeks of severance pay received by the Eligible Employee under
this Plan. In the event that the Severance Period includes a fractional week, the Severance Period shall be rounded to the nearest whole number.

6.     RIGHT TO INTERPRET PLAN; AMEND AND TERMINATE; OTHER ARRANGEMENTS.

(a)    Exclusive Discretion.The Plan Administrator shall have the exclusive discretion and authority to establish
rules, forms, and procedures for the administration of the Plan, and to construe and interpret the Plan and to decide any and all questions of fact, interpretation, definition, computation or
administration arising in connection with the operation of the Plan, including, but not limited to, the eligibility to participate in the Plan, applicability of the Plan to a specific termination of
employment event, and amount of benefits paid under the Plan. The rules, interpretations, computations and other actions of the Plan Administrator shall be binding and conclusive on all persons.

(b)    Amendment or Termination.The Company also reserves the right to amend or discontinue this Plan or the
benefits provided hereunder at any time; provided, however, that no such amendment or termination shall affect the right to any unpaid benefit of any Eligible Employee whose termination date has
occurred prior to amendment or termination of the Plan.

(c)    Other Severance Arrangements.The Company reserves the right to make other arrangements regarding severance
benefits in special circumstances. The foregoing notwithstanding, in no event shall any individual receive from the Company any severance benefit greater than the benefit provided under
Section 3, unless such individual executes, as a condition upon the receipt of such additional benefit, a waiver and release of any and all claims that such individual may have against the
Company, on the form provided by the Company.

7.     CONTINUATION OF EMPLOYMENT BENEFITS.

(a)    COBRA Continuation.Each Eligible Employee who is enrolled in a health, dental or vision plan sponsored by
the Company may be eligible to continue coverage under such health, dental or vision plan (or to convert to an individual policy) pursuant to the requirements of the Consolidated Omnibus Budget
Reconciliation Act of 1985 ("COBRA"). The Company will notify the individual of any such right to continue health coverage.

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(b)    Other Employee Benefits.Unless otherwise specified by the Company in the applicable Severance Benefit
Schedule, all non-health benefits (such as life insurance and disability coverage) terminate as of the employee's last day of active, physically present on the job, employment with the
Company, as determined by the Company (except to the extent that any conversion privilege is available thereunder).

8.     OUTPLACEMENT BENEFITS.

The Company, in its sole discretion, shall determine from time to time the outplacement benefits, if any, available for Eligible Employees under this Plan.

9.     CLAIMS, INQUIRIES, AND APPEALS.

(a)    Applications for Benefits and Inquiries.Any application for benefits, inquiries about the Plan or inquiries
about present or future rights under the Plan must be submitted to the Plan Administrator in writing. The Plan Administrator is:

Allos
Therapeutics, Inc.
Attention: Human Resources
11080 CirclePoint Road, Suite 200
Westminster, CO 80020

(b)    Denial of Claims.In the event that any application for benefits is denied in whole or in part, the Plan
Administrator must notify the applicant, in writing, of the denial of the application, and of the applicant's right to review the denial. The written notice of denial will be set forth in a manner
designed to be understood by the employee, and will include specific reasons for the denial, specific references to the Plan provision upon which the denial is based, a description of any information
or material that the Plan Administrator needs to complete the review and an explanation of the Plan's review procedure.

This
written notice will be given to the employee within 90 days after the Plan Administrator receives the application, unless special circumstances require an extension of time,
in which case, the Plan Administrator has up to an additional 90 days for processing the application. If an extension of time for processing is required, written notice of the extension will be
furnished to the applicant before the end of the initial 90-day period.

This
notice of extension will describe the special circumstances necessitating the additional time and the date by which the Plan Administrator is to render its decision on the
application. If written notice of denial of the application for benefits is not furnished within the specified time, the application shall be deemed to be denied. The applicant will then be permitted
to appeal the denial in accordance with the Review Procedure described below.

(c)    Request for a Review.Any person (or that person's authorized representative) for whom an application for
benefits is denied (or deemed denied), in whole or in part, may appeal the denial by submitting a request for a review to the Plan Administrator within 60 days after the application is denied
(or deemed denied). The Plan Administrator will give the applicant (or his or her representative) an opportunity to review pertinent documents in preparing a request for a review. A request for a
review shall be in writing and shall be addressed to:

Allos
Therapeutics, Inc.
Attention: Human Resources
11080 CirclePoint Road, Suite 200
Westminster, CO 80020

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A
request for review must set forth all of the grounds on which it is based, all facts in support of the request and any other matters that the applicant feels are pertinent. The Plan Administrator
may require the applicant to submit additional facts, documents or other material as it may find necessary or appropriate in making its review.

(d)    Decision on Review.The Plan Administrator will act on each request for review within 60 days after
receipt of the request, unless special circumstances require an extension of time (not to exceed an additional 60 days), for processing the request for a review. If an extension for review is
required, written notice of the extension will be furnished to the applicant within the initial 60-day period. The Plan Administrator will give prompt, written notice of its decision to
the applicant. In the event that the Plan Administrator confirms the denial of the application for benefits in whole or in part, the notice will outline, in a manner calculated to be understood by the
applicant, the specific Plan provisions upon which the decision is based. If written notice of the Plan Administrator's decision is not given to the applicant within the time prescribed in this
Subsection (d), the application will be deemed denied on review.

(e)    Rules and Procedures.The Plan Administrator will establish rules and procedures, consistent with the Plan
and with ERISA, as necessary and appropriate in carrying out its responsibilities in reviewing benefit claims. The Plan Administrator may require an applicant who wishes to submit additional
information in connection with an appeal from the denial (or deemed denial) of benefits to do so at the applicant's own expense.

(f)    Exhaustion of Remedies.No legal action for benefits under the Plan may be brought until the claimant
(i) has submitted a written application for benefits in accordance with the procedures described
by subparagraph 9(a) above, (ii) has been notified by the Plan Administrator that the application is denied (or the application is deemed denied due to the Plan Administrator's failure
to act on it within the established time period), (iii) has filed a written request for a review of the application in accordance with the appeal procedure described in subparagraph 9(c)
above and (iv) has been notified in writing that the Plan Administrator has denied the appeal (or the appeal is deemed to be denied due to the Plan Administrator's failure to take any action on
the claim within the time prescribed by subparagraph 9(d) above).

10.   OTHER PLAN INFORMATION.

(a)    Employer and Plan Identification Numbers.The Employer Identification Number assigned to the Company (which
is the "Plan Sponsor" as that term is used in ERISA) by the Internal Revenue Service is 54-1655029. The Plan Number assigned to the Plan by the Plan Sponsor pursuant to the instructions of
the Internal Revenue Service is 502.

(b)    Ending Date for Plan's Fiscal Year.The date of the end of the fiscal year for the purpose of maintaining
the Plan's records is December 31.

(c)    Agent for the Service of Legal Process.The agent for the service of legal process with respect to the Plan
is Allos Therapeutics, Inc., 11080 CirclePoint Road, Suite 200, Westminster, CO 80020

(d)    Plan Sponsor and Administrator.The "Plan Sponsor" and the "Plan Administrator" of the Plan is Allos
Therapeutics, Inc., 11080 CirclePoint Road, Suite 200, Westminster, CO 80020

(e)    Telephone Number.    The Plan Sponsor's and Plan Administrator's telephone number is
(303) 426-6262. The Plan Administrator is the named fiduciary charged with the responsibility for administering the Plan.

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11.   STATEMENT OF ERISA RIGHTS.

Participants in this Plan (which is a welfare benefit plan sponsored by Allos Therapeutics, Inc.) are entitled to certain rights and protections under
ERISA. If you are an Eligible Employee, you are considered a participant in the Plan and, under ERISA, you are entitled to:

(a)Examine, without charge, at the Plan Administrator's office and at other specified locations, such as work sites, all
Plan documents and copies of all documents filed by the Plan with the U.S. Department of Labor, such as detailed annual reports;

(b)Obtain copies of all Plan documents and Plan information upon written request to the Plan Administrator. The
Administrator may make a reasonable charge for the copies;

(c)Receive a summary of the Plan's annual financial report, in the case of a plan which is required to file an annual
financial report with the Department of Labor. (Generally, all pension plans and welfare plans with 100 or more participants must file these annual reports.)

In
addition to creating rights for Plan participants, ERISA imposes duties upon the people responsible for the operation of the employee benefit plan. The people who operate the Plan,
called "fiduciaries" of the Plan, have a duty to do so prudently and in the interest of you and other Plan participants and beneficiaries.

No
one, including your employer or any other person, may fire you or otherwise discriminate against you in any way to prevent you from obtaining a Plan benefit or exercising your rights
under ERISA. If your claim for a Plan benefit is denied in whole or in part, you must receive a written explanation of the reason for the denial. You have the right to have the Plan review and
reconsider your claim.

Under
ERISA, there are steps you can take to enforce the above rights. For instance, if you request materials from the Plan and do not receive them within 30 days, you may file
suit in a federal court. In such a case, the court may require the Plan Administrator to provide the materials and pay you up to $110 a day until you receive the materials, unless the materials were
not sent because of reasons beyond the control of the Plan Administrator. If you have a claim for benefits that is denied or ignored, in whole or in part, you may file suit in a state or federal
court. If it should happen that the Plan fiduciaries misuse the Plan's money, or if you are discriminated against for asserting your rights, you may seek assistance from the U.S. Department of Labor,
or you may file suit in a federal court. The court will decide who should pay court costs and legal fees. If you are successful, the court may order the person you have sued to pay these costs and
fees. If you lose, the court may order you to pay these costs and fees, for example, if it finds your claim is frivolous.

If
you have any questions about the Plan, you should contact the Plan Administrator. If you have any questions about your rights under ERISA, you should contact the nearest office of the
Pension and Welfare Benefits Administration, U.S. Department of Labor, listed in your telephone directory or the Division of Technical Assistance and Inquiries, Pension and Welfare Benefits
Administration, U.S. Department of Labor, 200 Constitution Avenue, N.W., Washington, DC 20210.

12.   NO IMPLIED EMPLOYMENT CONTRACT.

The Plan shall not be deemed (i) to give any employee or other person any right to be retained in the employ of the Company nor (ii) to interfere
with the right of the Company to discharge any employee or other person at any time and for any reason, which right is hereby reserved.

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13.   LEGAL CONSTRUCTION.

This Plan is intended to be governed by and shall be construed in accordance with the Employee Retirement Income Security Act of 1974 ("ERISA") and, to the extent
not preempted by ERISA, the laws of the State of Colorado.

14.   BASIS OF PAYMENTS TO AND FROM PLAN.

All benefits under the Plan shall be paid by the Company. The Plan shall be unfunded, and benefits hereunder shall be paid only from the general assets of the
Company.

15.   CODE SECTION 409A COMPLIANCE.

To the extent any payments or benefits pursuant to the Plan (a) are paid from the date of termination of Eligible Employee's employment through
March 15 of the calendar year following such termination, such severance benefits are intended to constitute separate payments for purposes of Section 1.409A-2(b)(2) of the
Treasury Regulations and thus payable pursuant to the "short-term deferral" rule set forth in Section 1.409A-1(b)(4) of the Treasury Regulations; (b) are paid
following said March 15, such severance benefits are intended to constitute separate payments for purposes of Section 1.409A-2(b)(2) of the Treasury Regulations made upon an
involuntary separation from service and payable pursuant to Section 1.409A-1(b)(9)(iii) of the Treasury Regulations, to the maximum extent permitted by said provision, and
(c) are in excess of the amounts specified in clauses (a) and (b) of this paragraph, shall (unless otherwise exempt under Treasury Regulations) be considered separate payments
subject to the distribution requirements of Section 409A(a)(2)(A) of the Code, including, without limitation, the requirement of Section 409A(a)(2)(B)(i) of the Code that payments or
benefits be delayed until 6 months after Eligible Employee's separation from service if Eligible Employee is a "specified employee" within the meaning of the aforesaid section of the Code at
the time of such separation from service. In the event that a 6-month delay of any such separation payments or benefits is required, on the first regularly scheduled pay date following the
conclusion of the delay period the Eligible Employee shall receive a lump sum payment or benefit in an amount equal to the separation payments and benefits that were so delayed, and any remaining
separation payments or benefits shall be paid on the same basis and at the same time as otherwise specified pursuant to the Plan (subject to applicable tax withholdings and deductions).

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