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[Alveolar rhabdomyosarcoma: novel surrogate markers associated with oncogenic translocation]. / Al'veolyarnaya rabdomiosarkoma: novye vspomogatel'nye surrogatnye markery onkogennykh translokatsii.
Tarakanova, A V; Sharlay, A S; Konovalov, D M.
Afiliación
  • Tarakanova AV; Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia.
  • Sharlay AS; Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia.
  • Konovalov DM; Dmitry Rogachev National Medical Research Center of Pediatric Hematology, Oncology and Immunology, Moscow, Russia.
Arkh Patol ; 85(1): 10-15, 2023.
Article en Ru | MEDLINE | ID: mdl-36785957
BACKGROUND: Anomalies of the FOXO1 gene in alveolar rhabdomyosarcoma are associated with a worse clinical prognosis, which determines the high value of studying the status of this gene when choosing a therapy strategy. The «gold standard¼ for determining FOXO1 gene rearrangements is currently the fluorescent in situ hybridization (FISH) technique. OBJECTIVE: Study of the relationship between canonical FOXO1 translocation and immunohistochemical expression of new surrogate markers in alveolar rhabdomyosarcoma to determine their predictive value. MATERIAL AND METHODS: 139 cases of rhabdomyosarcoma were retrospectively studied. The study used tissue matrix technology (TMA). On sections obtained from TMA blocks, the FISH technique was implemented using the locus-specific probe MetaSystems XL FOXO1 Break Apart (Metasystems, Germany). Immunohistochemical studies were performed on similar sections from TMA blocks with OLIG2 (Cell Marque Antibodies, clone 211F1.1) and MUC4 (Cell Marque Antibodies, clone 8G7) antibodies. RESULTS: The final expression analysis and statistical processing using a 2x2 contingency table and Fisher's exact test passed 111 cases (76 without FOXO1 rearrangement and 35 with rearrangement). The specificity of OLIG2 and MUC4 expression for FOXO1-rearranged alveolar rhabdomyosarcoma was 85.53% and 80.26%, respectively (p<0.01). CONCLUSION: The present study confirms the high predictive value of the expression of surrogate markers OLIG2 and MUC4 in determining the genetic status of alveolar rhabdomyosarcoma, which makes it possible to predict with high specificity the detection of the FOXO1 gene rearrangement.
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Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Rabdomiosarcoma Alveolar Tipo de estudio: Diagnostic_studies / Observational_studies / Prognostic_studies / Risk_factors_studies Límite: Humans Idioma: Ru Revista: Arkh Patol Año: 2023 Tipo del documento: Article País de afiliación: Rusia

Texto completo: 1 Colección: 01-internacional Banco de datos: MEDLINE Asunto principal: Rabdomiosarcoma Alveolar Tipo de estudio: Diagnostic_studies / Observational_studies / Prognostic_studies / Risk_factors_studies Límite: Humans Idioma: Ru Revista: Arkh Patol Año: 2023 Tipo del documento: Article País de afiliación: Rusia