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Analysis of biomarkers in rectal tumors through next-generation sequencing

Grant number: 10/12658-2
Support type:Scholarships in Brazil - Doctorate
Effective date (Start): February 01, 2011
Effective date (End): July 31, 2014
Field of knowledge:Biological Sciences - Biochemistry - Molecular Biology
Principal Investigator:Anamaria Aranha Camargo
Grantee:Elisa Rennó Donnard Moreira
Home Institution: Instituto de Química (IQ). Universidade de São Paulo (USP). São Paulo , SP, Brazil


Rectal cancer is currently a disease with great impact in the majority of countries. The selection of an effective course of treatment presents great difficulty in health care centers, especially due to genetic differences between patients that determine the outcome of a given treatment. Neoadjuvant chemoradiation has provided stimulating results in treatment of rectal cancer in spite of the large variation in outcome. The identification of biomarkers that could indicate for each patient the best treatment course and determine which of them still present tumoral tissue after treatment would significantly improve the quality of treatment for this type of cancer. In this project we will use a computational and high throughput sequencing approach to identify specific inter-chromosomal rearrangements in tumor samples that can be used as biomarkers to evaluate the patient's response to treatment and detect disease relapse. Tumor samples of three different types of response to treatment will be analyzed: I) samples from patients that present complete response after initial neoadjuvant treatment; II) samples from patients that did not respond to neoadjuvant treatment; III) samples from patients that, according to clinical diagnosis, did not respond to treatment, however, a further pathological diagnosis indicates that the complete response was obtained. Thus, we hope to identify biomarkers capable of indicating the type of response for each patient during treatment. The specific biomarkers can be used for a more precise diagnosis of patients that still present tumor tissue even after initial treatment and that will be directed to surgery. (AU)

Scientific publications
(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)
BETTONI, FABIANA; MASOTTI, CIBELE; CORREA, BRUNA R.; DONNARD, ELISA; DOS SANTOS, FILIPE F.; SAO JULIAO, GUILHERME P.; VAILATI, BRUNA B.; HABR-GAMA, ANGELITA; GALANTE, PEDRO A. F.; PEREZ, RODRIGO O.; CAMARGO, ANAMARIA A. The Effects of Neoadjuvant Chemoradiation in Locally Advanced Rectal Cancer-The Impact in Intratumoral Heterogeneity. FRONTIERS IN ONCOLOGY, v. 9, SEP 27 2019. Web of Science Citations: 0.
DONNARD, ELISA R.; CARPINETTI, PAOLA A.; NAVARRO, FABIO C. P.; PEREZ, RODRIGO O.; HABR-GAMA, ANGELITA; PARMIGIANI, RAPHAEL B.; CAMARGO, ANAMARIA A.; GALANTE, PEDRO A. F. ICRmax: An optimized approach to detect tumor-specific interchromosomal rearrangements for clinical application. Genomics, v. 105, n. 5-6, p. 265-272, MAY 2015. Web of Science Citations: 2.

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