Use of bacteria, bacterial products, and other immunoregulatory entities in combination with anti-CTLA-4 and/or anti-PD-1 antibodies to treat solid tumor malignancies

US12427173B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-12427173-B2
Application numberUS-201515301163-A
CountryUS
Kind codeB2
Filing dateMar 31, 2015
Priority dateMar 31, 2014
Publication dateSep 30, 2025
Grant dateSep 30, 2025

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

The presently disclosed subject matter provides methods and kits for treating solid tumors in a subject by using a combination of anti-CTLA-4 and/or anti-PD-1 antibodies with at least one member of the group consisting of a bacterium, bacterial product, and an immunoregulatory entity. In particular embodiments, the bacteria are toxin-depleted, anaerobic bacteria, such as Clostridium novyi -NT.

First claim

Opening claim text (preview).

That which is claimed: 1. A method for debulking a solid colon tumor in a subject, the method comprising administering to the subject a therapeutically effective amount of a combination of an anti-CTLA-4 antibody, and one or more Clostridium novyi bacterium spores, wherein no additional anti-cancer agent is administered. 2. The method of claim 1 , wherein the Clostridium novyi bacterium spores are toxin-depleted and anaerobic. 3. The method of claim 2 , wherein the Clostridium novyi bacterium spores is Clostridium novyi -NT bacterium spores. 4. The method of claim 2 , wherein part of or all of a toxin gene of a wild-type form of the Clostridium novyi bacterium spores is deleted. 5. The method of claim 2 , wherein the toxicity of the Clostridium novyi bacterium spores is reduced by a factor of at least 2 compared to a corresponding wild-type Clostridium novyi bacterium spores. 6. The method of claim 1 , wherein the Clostridium novyi bacterium spores are administered intravenously or intratumorally. 7. The method of claim 1 , wherein the anti-CTLA-4 antibody is administered by at least one method selected from the group consisting of intravenously, intramuscularly, subcutaneously, and intratumorally. 8. The method of claim 1 , wherein the solid colon tumor is malignant. 9. The method of claim 1 , wherein the subject is human. 10. The method of claim 1 , wherein the subject is a non-human animal.

Assignees

Inventors

Classifications

  • against the immunoglobulin superfamily · CPC title

  • characterised by the route of administration · CPC title

  • comprising antibodies · CPC title

  • Probiotics · CPC title

  • against proteinaceous materials, e.g. enzymes, hormones, lymphokines · CPC title

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Frequently asked questions

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What does patent US12427173B2 cover?
The presently disclosed subject matter provides methods and kits for treating solid tumors in a subject by using a combination of anti-CTLA-4 and/or anti-PD-1 antibodies with at least one member of the group consisting of a bacterium, bacterial product, and an immunoregulatory entity. In particular embodiments, the bacteria are toxin-depleted, anaerobic bacteria, such as Clostridium novyi -NT.
Who is the assignee on this patent?
Univ Johns Hopkins, Biomed Valley Discoveries Inc
What technology area does this patent fall under?
Primary CPC classification A61K35/74. Mapped technology areas include Human Necessities.
When was this patent published?
Publication date Tue Sep 30 2025 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).