Article ; Online: Immune Activation following Irbesartan Treatment in a Colorectal Cancer Patient: A Case Study.
International journal of molecular sciences
2023 Volume 24, Issue 6
Abstract: Colorectal cancers are one of the most prevalent tumour types worldwide and, despite the emergence of targeted and biologic therapies, have among the highest mortality rates. The Personalized OncoGenomics (POG) program at BC Cancer performs whole genome ... ...
Abstract | Colorectal cancers are one of the most prevalent tumour types worldwide and, despite the emergence of targeted and biologic therapies, have among the highest mortality rates. The Personalized OncoGenomics (POG) program at BC Cancer performs whole genome and transcriptome analysis (WGTA) to identify specific alterations in an individual's cancer that may be most effectively targeted. Informed using WGTA, a patient with advanced mismatch repair-deficient colorectal cancer was treated with the antihypertensive drug irbesartan and experienced a profound and durable response. We describe the subsequent relapse of this patient and potential mechanisms of response using WGTA and multiplex immunohistochemistry (m-IHC) profiling of biopsies before and after treatment from the same metastatic site of the L3 spine. We did not observe marked differences in the genomic landscape before and after treatment. Analyses revealed an increase in immune signalling and infiltrating immune cells, particularly CD8+ T cells, in the relapsed tumour. These results indicate that the observed anti-tumour response to irbesartan may have been due to an activated immune response. Determining whether there may be other cancer contexts in which irbesartan may be similarly valuable will require additional studies. |
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MeSH term(s) | Humans ; Irbesartan/therapeutic use ; Antihypertensive Agents/therapeutic use ; CD8-Positive T-Lymphocytes/pathology ; Colorectal Neoplasms/drug therapy ; Colorectal Neoplasms/genetics ; Colorectal Neoplasms/pathology |
Chemical Substances | Irbesartan (J0E2756Z7N) ; Antihypertensive Agents |
Language | English |
Publishing date | 2023-03-20 |
Publishing country | Switzerland |
Document type | Journal Article |
ZDB-ID | 2019364-6 |
ISSN | 1422-0067 ; 1422-0067 ; 1661-6596 |
ISSN (online) | 1422-0067 |
ISSN | 1422-0067 ; 1661-6596 |
DOI | 10.3390/ijms24065869 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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