Methods and compositions for the treatment of persistent infections and cancer by inhibiting the programmed cell death 1 (PD-1) pathway

Patent metadata

Field	Value
Publication number	US-9457080-B2
Application number	US-201314144304-A
Country	US
Kind code	B2
Filing date	Dec 30, 2013
Priority date	Jun 8, 2005
Publication date	Oct 4, 2016
Grant date	Oct 4, 2016

Abstract

The present invention provides methods and compositions for the treatment, prevention, or reduction of persistent infections, such as chronic infections, latent infections, and slow infections and cancer. The methods and compositions of the invention are also useful for the alleviation of one or more symptoms associated with such infections and cancer.

First claim

The invention claimed is:

1. A method of increasing cytotoxic activity of anergic T cells in a subject having a lymphoproliferative cancer, comprising
administering to the subject having the lymphoproliferative cancer an effective amount of an agent that reduces the activity or expression of a Programmed Cell Death (PD)-1 polypeptide, wherein the agent is an anti-Programmed Cell Death Ligand (PD-L)1 antibody,
thereby increasing the cytotoxic activity of anergic T cells in the subject with the lymphoproliferative cancer, wherein the lymphoproliferative cancer is a Hodgkin's lymphoma.

2. The method of claim 1 , wherein increasing the cytotoxic activity of anergic T cells comprises increasing cytokine production or T cell proliferation.

3. The method of claim 2 , wherein the cytokine is interferon γ, tumor necrosis factor α or interleukin-2.

4. The method of claim 1 , further comprising measuring cytotoxic T cell activity in a biological sample from the subject.

5. The method of claim 4 , wherein measuring cytotoxic T cell activity comprises measuring the cytotoxic activity of anergic CD8+ T cells in the biological sample from the subject.

6. The method of claim 4 , wherein measuring cytotoxic T cell activity comprises measuring the production of a cytokine by T cells in the biological sample from the subject.

7. The method of claim 6 , wherein the cytokine is interferon γ, tumor necrosis factor α or interleukin-2.

8. The method of claim 1 , wherein the Hodgkin's lymphoma is a nodular lymphocyte predominant Hodgkin's lymphoma.

9. The method of claim 1 , wherein the method further comprises administering to the subject an effective amount of a second compound that induces an immune response.

10. The compound of claim 9 , wherein the second compound is an anti-inflammatory compound, an antineoplastic compound or an analgesic.

11. The method of claim 9 , wherein the second compound is an anti-CTLA-4 antibody, an anti-BTLA antibody, an anti- B7-H4 antibody.

12. The method of claim 9 , wherein the second compound reduces cancer cell volume.

13. The method of claim 1 , wherein the antibody is a monoclonal antibody, a humanized antibody, a deimmunized antibody, or an immunoglobulin (Ig) fusion protein.

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

15. The method of claim 1 , wherein the method decreases a symptom of the lymphoproliferative cancer in the subject.

16. The method of claim 1 , wherein the method decreases the size of the tumor or the prevalence of cancer cells.

Assignees

• Univ Emory
• Dana Farber Cancer Inst Inc
• Brigham & Womens Hospital
• Harvard College
• Brigham And Women'S Hospital Inc

Inventors

• Freeman Gordon
• Sharpe Arlene
• Dorfman David M
• Ahmed Rafi
• Barber Daniel
• Wherry E John

Classifications

• A61P37/04

  Immunostimulants · CPC title

• A61P35/00

  Antineoplastic agents · CPC title

• A61P31/12

  Antivirals · CPC title

• A61P43/00

  Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00 · CPC title

• A61P33/06

  Antimalarials · CPC title