Identification of New Prognostic Markers for Breast Cancer.

Официальное название

Identification de Nouveaux Marqueurs Pronostiques Des Cancers du Sein

Обзор

Candidate markers have been identified thanks to an original approach developed by our research team aiming at detecting ectopic gene expression using public pan-genomic breast cancer data. The same approach had already been used and validated in lung tumors, leukemias and lymphomas. The main objective of the present research is to use tumor samples from patients in a retrospective and prospective cohort to test and validate the relevance of these prognostic markers in breast cancer.

Подробное описание

Following a diagnosis of breast cancer, the most immediate challenges in patient management are the determination of prognosis and the identification of the most appropriate neoadjuvant and adjuvant systemic therapy. Indicators to assess the risk of relapse or metastasis during treatment are still largely insufficient, a situation which does not allow to precisely adjust the treatment, often leading to heavy side effects. In order to minimize the side effects and risks of therapies, it is therefore necessary to discover new markers which would enable us to reliably assess the prognosis of patients diagnosed with breast cancer.

The approach used here for discovering new prognostic markers is based on an original strategy developed by the researchers associated with this project and published in the respective contexts of lung cancer, acute lymphoblastic leukemia and lymphoma. Indeed, genetic abnormalities and deregulation of the systems controlling the expression of specific gene programs not only lead to the abnormal extinction of normally active genes, but is also responsible for the aberrant activation of genes that normally should remain silent. The investigators have recently demonstrated that any type of malignancy is associated with the ectopic expression of these normally silent genes, including genes of the male germline. The in-depth study of these aberrant gene expressions and the search for correlations and associations with the clinical and biological data of the tumors show that the expression of some of these genes and the presence of their products are good indicators of tumor aggressiveness.

The investigators propose here to apply the same approach for the search for new prognostic markers in the case of breast cancer. A prior analysis of breast tumors, of which transcriptome data are publicly available, has identified a number of tissue-specific genes, including the germline and placenta genes, frequently activated in breast cancer. Based on our past observations, our hypothesis is that some of them may directly reflect the level of tumor aggressiveness and could therefore be used as prognostic biomarkers.

The objective of this work will be to look for the prognostic value of these genes by using the samples collected in this cohort of patients to detect their activation and to correlate these aberrant activations with the anatomopathological data of the tumor, as well as to the clinico-biological data and patient follow-up.

Вмешательства

• Другое Conventional treatment protocols of breast cancer

Первичные конечные точки

• Study of ectopic gene expression to define new prognostic biomarkers in breast cancer [Срок оценки: 12 years, with evaluation every 3 years]

Вторичные конечные точки (1)

• Study of response to neoadjuvant treatments of breast cancer assessed from anatomopathological data. [Срок оценки: 12 years, with evaluation every 3 years]

Критерии участия

Критерии включения

• Adult female patients with breast cancer

Критерии исключения

• Presence of another cancer, excluding basal cell cancers or pre-neoplastic lesions of the cervix.
• Subject under guardianship or subject deprived of liberty
• Impossibility of collecting information on exposure (subjects recently arrived in France, foreign language, etc.)
• Male patients

Критерии приведены из реестра в оригинале (на английском). Окончательную оценку соответствия проводит исследовательский центр.

Здоровые добровольцы: Нет

Дизайн исследования

Модель наблюдения

Когортное

Центры проведения

Франция · 1 центр

• Anne-Cécile PHILIPPE — Grenoble

Публикации

• Wang J, Mi JQ, Debernardi A, Vitte AL, Emadali A, Meyer JA, Charmpi K, Ycart B, Callanan MB, Carroll WL, Khochbin S, Rousseaux S. A six gene expression signature defines aggressive subtypes and predicts outcome in childhood and adult acute lymphoblastic leukemia. Oncotarget. 2015 Jun 30;6(18):16527-42. doi: 10.18632/oncotarget.4113. PMID 26001296
• Le Bescont A, Vitte AL, Debernardi A, Curtet S, Buchou T, Vayr J, de Reynies A, Ito A, Guardiola P, Brambilla C, Yoshida M, Brambilla E, Rousseaux S, Khochbin S. Receptor-Independent Ectopic Activity of Prolactin Predicts Aggressive Lung Tumors and Indicates HDACi-Based Therapeutic Strategies. Antioxid Redox Signal. 2015 Jul 1;23(1):1-14. doi: 10.1089/ars.2013.5581. Epub 2014 Mar 6. PMID 24512221
• Emadali A, Rousseaux S, Bruder-Costa J, Rome C, Duley S, Hamaidia S, Betton P, Debernardi A, Leroux D, Bernay B, Kieffer-Jaquinod S, Combes F, Ferri E, McKenna CE, Petosa C, Bruley C, Garin J, Ferro M, Gressin R, Callanan MB, Khochbin S. Identification of a novel BET bromodomain inhibitor-sensitive, gene regulatory circuit that controls Rituximab response and tumour growth in aggressive lymphoid c PMID 23828858
• Rousseaux S, Debernardi A, Jacquiau B, Vitte AL, Vesin A, Nagy-Mignotte H, Moro-Sibilot D, Brichon PY, Lantuejoul S, Hainaut P, Laffaire J, de Reynies A, Beer DG, Timsit JF, Brambilla C, Brambilla E, Khochbin S. Ectopic activation of germline and placental genes identifies aggressive metastasis-prone lung cancers. Sci Transl Med. 2013 May 22;5(186):186ra66. doi: 10.1126/scitranslmed.3005723. PMID 23698379
• Reynoird N, Schwartz BE, Delvecchio M, Sadoul K, Meyers D, Mukherjee C, Caron C, Kimura H, Rousseaux S, Cole PA, Panne D, French CA, Khochbin S. Oncogenesis by sequestration of CBP/p300 in transcriptionally inactive hyperacetylated chromatin domains. EMBO J. 2010 Sep 1;29(17):2943-52. doi: 10.1038/emboj.2010.176. Epub 2010 Jul 30. PMID 20676058

Идентификаторы

NCT: NCT03436069 · 38RC17.172 · 2017-A01740-53

Первоисточники (государственные реестры)

• ClinicalTrials.gov (NIH, США)

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