WO1994026293B1 - Immunologic enhancement with intermittent interleukin-2 therapy - Google Patents

Immunologic enhancement with intermittent interleukin-2 therapy

Info

Publication number
WO1994026293B1
WO1994026293B1 PCT/US1994/005397 US9405397W WO9426293B1 WO 1994026293 B1 WO1994026293 B1 WO 1994026293B1 US 9405397 W US9405397 W US 9405397W WO 9426293 B1 WO9426293 B1 WO 9426293B1
Authority
WO
WIPO (PCT)
Prior art keywords
patient
administrations
period
therapy
amount
Prior art date
Application number
PCT/US1994/005397
Other languages
French (fr)
Other versions
WO1994026293A1 (en
Filing date
Publication date
Priority claimed from US08/063,315 external-priority patent/US5419900A/en
Application filed filed Critical
Priority to JP52574694A priority Critical patent/JP4275193B2/en
Priority to EP94920673A priority patent/EP0702560B1/en
Priority to DK94920673T priority patent/DK0702560T3/en
Priority to DE69428992T priority patent/DE69428992T2/en
Priority to AT94920673T priority patent/ATE208206T1/en
Priority to AU71377/94A priority patent/AU691504B2/en
Publication of WO1994026293A1 publication Critical patent/WO1994026293A1/en
Publication of WO1994026293B1 publication Critical patent/WO1994026293B1/en
Priority to US08/452,440 priority patent/US5696079A/en

Links

Abstract

A method for activating a mammalian immune system entails a series of continuous IL-2 infusions that are effected intermittently over an extended period. For exemple, IL-2 can be administered continuously for a period that is on the order of 5 days in length, and successive infusions of this nature can be separated by a period of at least 4 weeks. Sustained beneficial effects, including elevated CD4 cell counts, restoration of lymphocyte function and an increase in the number of IL-2 receptors, are achieved with such intermittent IL-2 therapy, which can be combined with another therapy which targets a specific disease state, such as an anti-retroviral therapy comprising, for example, the administration of AZT, ddI or interferon alpha. In addition, IL-2 administration can be employed to facilitate in situ transduction of T cells in the context of gene therapy. By this approach the cells are first activated in vivo via the aforementioned IL-2 therapy, and transduction then is effected by delivering a genetically engineered retroviral vector directly to the patient.

Claims

AMENDED CLAIMS[received by the International Bureau on 21 December 1994 (21.12.94); original claims 1-13 replaced by amended claims 1-18 (3 pages)]
1. The use of an amount of IL-2 in the preparation of an agent for use in a method for treating a disease state characterized by an immunological impairment, where
(A) said amount is sufficient to increase the level of helper/inducer T-cell function in a patient suffering such an impairment and
(B) said patient is administered said IL-2 in a series of administrations effected intermittently, each of said administrations being conducted over a period of time of from 1 day to 2 weeks, and successive administrations being separated by a period of at least 4 weeks.
2. A use as claimed in claim 1, wherein said amount is sufficient to increase CD4 T-cell function in said patient.
3. A use as claimed in claim 1, wherein said amount is sufficient to increase expression of IL-2 receptors in said patient.
4. A use as claimed in claim 1, wherein said administration is effected by continuous infusion.
5. A use as claimed in claim 1, wherein said administration is effected by subcutaneous injections.
6. A use as claimed in claim 1, wherein each of said administrations comprises a dosage of IL-2 of from 1.8 to 24 MU/day.
7. A use as claimed in claim 4, wherein said period of time of each of said administrations is on the order of five days.
8. A use as claimed in claim 1, wherein said disease state is characterized by an infection of said patient by a pathogen against which a cellular immune response is a relevant mechanism for specific immunity for said pathogen in said patient.
9. A use as claimed in claim 6, wherein said disease state comprises a secondary infection of said patient, and wherein said patient has a suppressed immune system.
10. A composition of matter comprising (i) a container suitable for holding a solution to be infused into a patient, (ii) a liquid preparation comprising an amount of IL-2 in a pharmaceutically acceptable carrier such that said preparation represents an IL-2 dosage of between about 1.8 to about 24 MU/day, and (iii) instructions on administering said preparation to a patient suffering from an immunological impairment or infectious disease in a series of administrations effected intermittently, such that each of said administrations is conducted over a period of time of from 1 day to 2 weeks, and such that successive administrations are separated by a period of at least 4 weeks.
11. A composition as claimed in claim 10, wherein said preparation is suitable for continuous infusion.
12. A composition as claimed in claim 10, wherein said preparation is suitable for subcutaneous injection.
13. A composition as claimed in claim 10, wherein said instructions further direct administering a therapy to said patient prior to or concomitantly with said adminsitration, said therapy targeting a specific disease state.
14. A composition as claimed in claim 13, wherein said therapy is an anti-retroviral therapy.
15. A composition as claimed in claim 14, wherein said anti-retroviral therapy comprises administering zidovudine to said patient.
16. A composition as claimed in claim 10, wherein said instructions further direct administering to said patient a retroviral vector to effect in situ transformation of lymphocytes.
17. A composition as claimed in claim 16, wherein said instructions further direct that said retroviral vector be administered on the 4th to 7th day of IL-2 administration.
18. The use of an amount of IL-2 in the preparation of an agent for use in a method for modulating the immune system of a patient in need thereof, where
(A) said amount is sufficient to increase the level of helper/inducer T-cell function in said patient,
(B) said patient is administered said IL-2 by a series of administrations effected intermittently, each of said administrations being conducted over a period of time of from 1 day to 2 weeks, and successive administrations being separated by a period of at least 4 weeks and
(C) said patient is administered a retroviral vector to effect in situ transformation of lymphocytes.
STATEMENT UNDER ARTICLE19
Attached are replacement pages 28-30 for the application. Original claim 13 has been canceled. Independent claim 1 has been amended to recite the use of an amount of IL-2 in the preparation of an agent for use in a method for treating a disease state characterized by an immunological impairment, where the patient is administered IL-2 in a series of administrations effected intermittently, wherein each of the administrations are conducted over a period of time of from 1 day to 2 weeks, and successive administrations are separated by a period of at least 4 weeks. Dependent claims 4 and 5 have been added to recite the embodiments wherein the administration is effected by continuous infusion and subcutaneous injections, respectively. Support for these amendments is found at page 8 of the as-filed specification.
The remaining dependent claims and independent claim 10 have been amended along similar lines, and claim 18 has been added to recite the use of an amount of IL-2 in the preparation of an agent for use in a method for modulating the immune system of patient in need thereof, as disclosed at pages 14-15 of the as-filed application. These amendments do not go beyond the disclosure of the application as filed. Claims 1-18 are clearly distinguished from the references cited in the International Search Report. The closest references appear to be EP 426 521 and EP 452 598, which are directed to the use of IL-2 in the treatment of cancer. These references teach the administration of IL-2 at a dose of 2-20 X 106 U/m2/day, with successive administrations separated by about 1 week. These references do not defeat the novelty or inventive step of the present invention, which is directed to the use of an amount of IL-2 in the preparation of an agent for use in a method of activating the immune system of a patient suffering from an immunological impairment.
In particular, these references do not teach or suggest that the IL-2 is administered in an amount sufficient to increase the level of helper/inducer T-cell function in the patient, or that successive administrations are separated by a period of at least 4 weeks, as recited in the instant claims. Moreover, these references do not disclose the prior or concomitant administration of an anti-retroviral therapy to a patient, as recited in claims 14 and 15, or the modulation of a patient's immune system by the administration of a retroviral vector, as recited in claims 16-18.
In view of the instant amendments and remarks, it is believed that the claims are patentable over the cited references.
PCT/US1994/005397 1993-05-19 1994-05-19 Immunologic enhancement with intermittent interleukin-2 therapy WO1994026293A1 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP52574694A JP4275193B2 (en) 1993-05-19 1994-05-19 Immunity enhancement by intermittent interleukin-2 therapy
EP94920673A EP0702560B1 (en) 1993-05-19 1994-05-19 Immunologic enhancement with intermittent interleukin-2 therapy
DK94920673T DK0702560T3 (en) 1993-05-19 1994-05-19 Immune boosting by intermittent interleukin-2 treatment
DE69428992T DE69428992T2 (en) 1993-05-19 1994-05-19 IMMUNOLOGICAL IMPROVEMENT WITH INTERMITTENT INTERLEUKIN-2 THERAPY
AT94920673T ATE208206T1 (en) 1993-05-19 1994-05-19 IMMUNOLOGICAL IMPROVEMENT WITH INTERMITTENT INTERLEUKIN-2 THERAPY
AU71377/94A AU691504B2 (en) 1993-05-19 1994-05-19 Immunologic enhancement with intermittent interleukin-2 therapy
US08/452,440 US5696079A (en) 1993-05-19 1995-05-26 Immunologic enhancement with intermittent interleukin-2 therapy

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/063,315 1993-05-19
US08/063,315 US5419900A (en) 1993-05-19 1993-05-19 Immunologic enhancement with intermittent interleukin-2 therapy

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
US08/063,315 Continuation US5419900A (en) 1993-05-19 1993-05-19 Immunologic enhancement with intermittent interleukin-2 therapy
US08/063,315 Continuation-In-Part US5419900A (en) 1993-05-19 1993-05-19 Immunologic enhancement with intermittent interleukin-2 therapy

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US48707595A Continuation 1993-05-19 1995-06-07
US48707595A Continuation-In-Part 1993-05-19 1995-06-07

Publications (2)

Publication Number Publication Date
WO1994026293A1 WO1994026293A1 (en) 1994-11-24
WO1994026293B1 true WO1994026293B1 (en) 1995-01-26

Family

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Application Number Title Priority Date Filing Date
PCT/US1994/005397 WO1994026293A1 (en) 1993-05-19 1994-05-19 Immunologic enhancement with intermittent interleukin-2 therapy

Country Status (11)

Country Link
US (3) US5419900A (en)
EP (1) EP0702560B1 (en)
JP (1) JP4275193B2 (en)
AT (1) ATE208206T1 (en)
AU (1) AU691504B2 (en)
CA (1) CA2163219A1 (en)
DE (1) DE69428992T2 (en)
DK (1) DK0702560T3 (en)
ES (1) ES2167370T3 (en)
PT (1) PT702560E (en)
WO (1) WO1994026293A1 (en)

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