VIOND Vion Pharmaceuticals Inc. (MM)

CUSIP No. 927624502


1.Names of Reporting Persons.

 (i) Meditor Group Ltd.
 (ii) Meditor Master Cobra Fund Ltd.

 I.R.S. Identification Nos. of above persons (entities only).

 (i) .................
 (ii) .................


2.Check the Appropriate Box if a Member of a Group (See Instructions)

 [ ](a)

 [ ](b)


3.SEC Use Only





4.Citizenship or Place of Organization

 (i) Bermuda
 (ii) Bermuda


Number of Shares Beneficially Owned by Each Reporting Person With:

5.Sole Voting Power

 (i) .........
 (ii) .........


6.Shared Voting Power

 (i) 420,270
 (ii) 420,270


7.Sole Dispositive Power

 (i) .........
 (ii) .........


8.Shared Dispositive Power

 (i) 420,270
 (ii) 420,270


9.Aggregate Amount Beneficially Owned by Each Reporting Person

 (i) 420,270
 (ii) 420,270


10.Check if the Aggregate Amount in Row (9) Excludes Certain Shares


 [ ]


11.Percent of Class Represented by Amount in Row (9)

 (i) 5.2%
 (ii) 5.2%


12.Type of Reporting Person (See Instructions)

 (i) CO
 (ii) CO


-------------------------------------------------------------


Item 1.

(a) Name of Issuer

 VION PHARMACEUTICALS, INC.


(b) Address of Issuer's Principal Executive Offices

 4 Science Park, New Haven, CT06511


Item 2.

(a) Name of Person Filing

 (i) Meditor Group Ltd.
 (ii) Meditor Master Cobra Fund Ltd.


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

 (i) 79 Front Street, Hamilton, Bermuda
 (ii) 6 Front Street, Hamilton, Bermuda


(c) Citizenship

 (i) Bermuda
 (ii) Bermuda


(d) Title of Class of Securities

 Common Stock


(e) CUSIP Number

 927624502


Item 3.

 Not applicable.


Item 4. Ownership.

(a) Amount beneficially owned:

 (i) 420,270
 (ii) 420,270


(b) Percent of class:

 (i) 5.2%
 (ii) 5.2%


(c) Number of shares as to which the person has:


(i) Sole power to vote or to direct the vote

 (i) .........
 (ii) .........


(ii) Shared power to vote or to direct the vote

 (i) 420,270
 (ii) 420,270


(iii) Sole power to dispose or to direct the disposition of

 (i) .........
 (ii) .........


(iv) Shared power to dispose or to direct the disposition of

 (i) 420,270
 (ii) 420,270


Item 5. Ownership of Five Percent or Less of a Class

 Not applicable.


Item 6. Ownership of More than Five Percent on Behalf of Another Person.

 Meditor Master Cobra Fund Ltd., an investment management client
 of Meditor Group Ltd., has the right to receive and the power
 to direct the receipt of dividends from, and the proceeds
 from the sale of, the securities identified herein.


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 Group

 Not applicable.


Item 10. Certification

 By signing below each of the undersigned certifies that,
 to the best of their knowledge and belief, the securities referred to
 above were not acquired and are not held for the purpose
 of or with the effect of changing or influencing the control
 of the issuer of the securities and were not acquired and are not held
 in connection with or as a participant in any transaction
 having that purpose or effect.


SIGNATURE

 After reasonable inquiry and to the best of our knowledge and belief,
 we certify that the information set forth in this statement is true,
 complete and correct.


 March 18, 2008


 Meditor Group Ltd.

 By S. Shakerchi (Director)


 Meditor Master Cobra Fund Ltd.

 By T. Shakerchi (Director)


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JOINT FILING AGREEMENT

 The undersigned each hereby agree to the joint filing of statements
 on Schedule 13G (and amendments thereto) relating to the common stock
 of Vion Pharmaceuticals, Inc.


 April 27, 2007


 Meditor Group Ltd.

 By S. Shakerchi (Director)


 Meditor European Master Fund Ltd.

 By T. Shakerchi (Director)