IP Library Granted Patent US 12,551,540
Granted Patent B2
US 12,551,540 · App. 17/709,166 · Granted Feb 17, 2026

Dosing and administration of recombinant L-asparaginase

Inventors: Mi Rim Choi (Encino, CA); Tong Lin (Palo Alto, CA); Jeffrey Silverman (Burlingame, CA)
Assignee: Jazz Pharmaceuticals Ireland Ltd.
A61K38/50A61K9/0019A61K45/06A61K47/60A61P35/00A61P35/02C12Y305/01001
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Quick Facts
Patent No.
US 12,551,540
App. No.
17/709,166
Granted
Feb 17, 2026
Kind
B2
Abstract

The present invention provides compositions and methods for treating a disease treatable by asparagine depletion in a human subject comprising dosing a human subject with L-asparaginase.

Claims (30)

1 . A method of treating cancer in a human subject in need thereof, said method comprising administering to the human subject L-asparaginase, other than an Escherichia coli derived asparaginase, as a set of time-ordered doses;

wherein the set of time-ordered doses comprises two series of three doses, wherein a first dose and a second dose are each 25 mg/m 2 and a third dose is 50 mg/m 2 ,

wherein the first, the second and the third dose are administered on a Monday, Wednesday and Friday, respectively, and wherein the L-asparaginase is a tetramer wherein each monomer of the tetramer comprises SEO ID NO:1,

wherein the doses at 25 mg/m 2 are administered intravascularly and the doses at 50 mg/m 2 are administered intramuscularly, and

wherein the cancer is a blood cell cancer treatable by asparagine depletion, thereby treating cancer in the subject.

2 . The method of claim 1 , wherein the human subject exhibited hypersensitivity to the Escherichia coli derived asparaginase.

3 . The method of claim 1 , wherein the human subject is an adult.

4 . The method of claim 1 , wherein the human subject is pediatric.

5 . The method of claim 1 , wherein the L-asparaginase demonstrates less than 6% aggregation.

6 . The method according to claim 1 , wherein the L-asparaginase is co-administered with one or more other chemotherapeutic agents as part of a multi-agent chemotherapeutic regimen.

7 . A method of substituting a treatment of a human subject for cancer, wherein the human subject is in need thereof, said method comprising administering to the human subject, as a substitute for an Escherichia coli derived asparaginase, a series of six doses of an L-asparaginase,

wherein a first dose and a second dose are each 25 mg/m 2 and a third dose is 50 mg/m 2 ,

wherein the first, the second and the third dose are administered on a Monday, Wednesday and Friday, respectively, and

wherein the L-asparaginase is a tetramer wherein each monomer of the tetramer comprises SEO ID NO: 1

wherein the doses at 25 mg/m 2 are administered intravascularly and the doses at 50 mg/m 2 are administered intramuscularly,

wherein the L-asparaginase is not an Escherichia coli derived asparaginase, and

wherein the cancer is a blood cell cancer treatable by asparagine depletion, thereby substituting a treatment of the human subject for cancer.

8 . The method of claim 7 , wherein each respective dose of the Escherichia coli derived asparaginase in a plurality of doses of the Escherichia coli derived asparaginase is separately substituted with an instance of the series of six doses of the L-asparaginase.

9 . The method of claim 7 , wherein the human subject exhibited hypersensitivity to the Escherichia coli derived asparaginase.

10 . The method of claim 7 , wherein the human subject is an adult.

11 . The method of claim 7 , wherein the human subject is pediatric.

12 . The method of claim 7 , wherein the L-asparaginase demonstrates less than 6% aggregation.

13 . The method according to claim 7 , wherein the L-asparaginase is co-administered with one or more other chemotherapeutic agents as part of a multi-agent chemotherapeutic regimen.

14 . The method according to claim 1 , wherein the cancer is acute lymphoblastic leukemia (ALL) or lymphoblastic lymphoma (LBL).

15 . The method according to claim 1 , wherein the cancer is acute myeloid leukemia (AML).

16 . The method according to claim 1 , wherein the cancer is diffuse large B-cell lymphoma (DLBCL).

17 . The method according to claim 7 , wherein the cancer is acute lymphoblastic leukemia (ALL) or lymphoblastic lymphoma (LBL).

18 . The method according to claim 7 , wherein the cancer is acute myeloid leukemia (AML).

19 . The method according to claim 7 , wherein the cancer is diffuse large B-cell lymphoma (DLBCL).

20 . The method of claim 1 , wherein the first dose is administered on a Monday, the second dose is administered on a Wednesday, and the third dose is administered on a Friday.

Assignments (2)
SECURITY AGREEMENT Recorded Apr 21, 2026
From: CAVION, INC.; JAZZ PHARMACEUTICALS, INC.; JAZZ PHARMACEUTICALS IRELAND LIMITED; JAZZ PHARMACEUTICALS RESEARCH UK LIMITED; JAZZ PHARMACEUTICALS THERAPEUTICS, INC.
To: U.S. BANK TRUST COMPANY, NATIONAL ASSOCIATION, AS COLLATERAL TRUSTEE
Reel/Frame 075442/0203 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 8, 2022
From: CHOI, MI RIM; LIN, TONG; SILVERMAN, JEFFREY
To: JAZZ PHARMACEUTICALS IRELAND LTD.
Reel/Frame 061026/0435 →