Molecular Classification in Mexican Patients With Endometrial Cancer and Its Impact on Prognosis
For patients and families
In plain language
An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.
- What is being studied
- The protocol lists: Descriptive and analytical.
- Who it may be relevant to
- Registry conditions: Endometrial Cancer. Basic parameters: from 18 years · Female.
- What needs checking
- Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
- Where it takes place
- Mexico
- Next step
- Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →
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Overview
Endometrial cancer (EC) is one of the most common gynecological neoplasms, being the second in incidence and third in mortality in Mexico. Recent studies show that EC molecular classification (Cancer Genome Atlas Research Network, 2013) serves to establish a more accurate prognosis in these patients and regulate therapeutic behavior in a personalized manner. However, there are no studies on EC molecular classification in Mexican women or its impact on prognosis and the possible modification of targeted treatment. The investigators will determine the molecular classification in EC by next-generation sequencing (NGS) to detect TP53 and POLE somatic mutations, and immunohistochemical detection of microsatellite instability (MSH2, MLH1, PMS1, PMS2, MSH6, and MSH3) in a cohort of patients with endometrioid-type EC, endometrioid subtype, attended at the Instituto Nacional de Cancerología - Mexico (INCan) and determine its impact on clinical prognosis.
Detailed description
The investigators will carry out a pilot study on patients with endometrioid type EC treated between 2015-2019. Samples of patients over 18 years of age admitted to the cohort with a diagnosis of endometrioid-type EC are already collected and will be evaluated for exome sequencing (N=32) and the detection of POLE mutations. DNA will be extracted using the "DNA/RNA AllPrep" kit (QIAGEN). Verification of adequate DNA extraction will be performed by quantifying using TapeStation (Agilent). Exome sequencing (N = 32 tumor samples and 32 somatic samples \[leukocytes\] from the same patient) will be carried out using Illumina's Nextera Rapid Capture Exome at Azenta Life Science (NJ, USA) following preset protocols and with a depth of 100X. The alignment and detection of variants will be done with the GATX-Mutect Suite (Broad Institute, USA) and the annotation of variant filtering with ANNOVAR. The identification of hotspots will be made according to Chen study. The immunohistochemistry (IHC) for microsatellite instability and overexpressed mutant TP53 (N = 94) will be done using established IHC protocols and will include MSH2, MLH1, PMS1, PMS2, MSH6, MSH3, and TP53.
Interventions
- Genetic Descriptive and analytical
Patients with EC endometroid
Primary outcome measures
- sequence the exome [Time frame: 2024-2025]
- Determine POLE mutations [Time frame: 2024-2025]
- Determine microsatellite instability [Time frame: 2025-2026]
- Validation [Time frame: 2025-2026]
Secondary outcome measures (2)
- Overall survival [Time frame: 2025-2026]
- Disease-free surviva [Time frame: 2025-2026]
Eligibility criteria
Criteria: Inclusion Criteria:
- Clinical diagnosis of endometrioid-type endometrial cancer with samples available
- That the patients have undergone surgery at INCan.
Exclusion criteria
- Samples with CEE of non-endometroid type.
- Samples from patients with double primary neoplasm, including carcinoma ductal in situ, squamous cell skin cancers, and cervical carcinoma in situ
- History of malignancy < 5 years prior with no evidence of disease (i.e., remission).
Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.
Study design
- Observational model
- Cohort
Study locations
Mexico · 1 center
- Instituto Nacional de Cancerología — Mexico City
Identifiers
NCT: NCT06206083 · (023/028/ICI/(CEI/017/23)