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Copy Number Alteration Profile Provides Additional Prognostic Value for Acute Lymphoblastic Leukemia Patients Treated on BFM Protocols.
Ampatzidou, Mirella; Florentin, Lina; Papadakis, Vassilios; Paterakis, Georgios; Tzanoudaki, Marianna; Bouzarelou, Dimitra; Papadhimitriou, Stefanos I; Polychronopoulou, Sophia.
Afiliación
  • Ampatzidou M; Department of Pediatric Hematology-Oncology, "Aghia Sophia" Children's Hospital, 11527 Athens, Greece.
  • Florentin L; Alfa Laboratory Diagnostic Center, YGEIA Hospital, 11524 Athens, Greece.
  • Papadakis V; Department of Pediatric Hematology-Oncology, "Aghia Sophia" Children's Hospital, 11527 Athens, Greece.
  • Paterakis G; Laboratory of Flow Cytometry, Department of Immunology, "G.Gennimatas" General Hospital, 11527 Athens, Greece.
  • Tzanoudaki M; Department of Immunology, "Aghia Sophia" Children's Hospital, 11527 Athens, Greece.
  • Bouzarelou D; Alfa Laboratory Diagnostic Center, YGEIA Hospital, 11524 Athens, Greece.
  • Papadhimitriou SI; Laboratory of Hematology, Department of Molecular Cytogenetics, "G.Gennimatas" General Hospital, 11527 Athens, Greece.
  • Polychronopoulou S; Department of Pediatric Hematology-Oncology, "Aghia Sophia" Children's Hospital, 11527 Athens, Greece.
Cancers (Basel) ; 13(13)2021 06 30.
Article en En | MEDLINE | ID: mdl-34209196
We present our data of a novel proposed CNA-profile risk-index, applied on a Greek ALLIC-BFM-treated cohort, aiming at further refining genomic risk-stratification. Eighty-five of 227 consecutively treated ALL patients were analyzed for the copy-number-status of eight genes (IKZF1/CDKN2A/2B/PAR1/BTG1/EBF1/PAX5/ETV6/RB1). Using the MLPA-assay, patients were stratified as: (1) Good-risk(GR)-CNA-profile (n = 51), with no deletion of IKZF1/CDKN2A/B/PAR1/BTG1/EBF1/PAX5/ETV6/RB1 or isolated deletions of ETV6/PAX5/BTG1 or ETV6 deletions with a single additional deletion of BTG1/PAX5/CDKN2A/B. (2) Poor-risk(PR)-CNA-profile (n = 34), with any deletion of ΙΚΖF1/PAR1/EBF1/RB1 or any other CΝΑ. With a median follow-up time of 49.9 months, EFS for GR-CNA-profile and PR-CNA-profile patients was 96.0% vs. 57.6% (p < 0.001). For IR-group and HR-group patients, EFS for the GR-CNA/PR-CNA subgroups was 100.0% vs. 60.0% (p < 0.001) and 88.2% vs. 55.6% (p = 0.047), respectively. Among FC-MRDd15 + patients (MRDd15 ≥ 10-4), EFS rates were 95.3% vs. 51.7% for GR-CNA/PR-CNA subjects (p < 0.001). Similarly, among FC-MRDd33 + patients (MRDd33 ≥ 10-4), EFS was 92.9% vs. 27.3% (p < 0.001) and for patients FC-MRDd33 - (MRDd33 < 10-4), EFS was 97.2% vs. 72.7% (p = 0.004), for GR-CNA/PR-CNA patients, respectively. In a multivariate analysis, the CNA-profile was the most important outcome predictor. In conclusion, the CNA-profile can establish a new genomic risk-index, identifying a distinct subgroup with increased relapse risk among the IR-group, as well as a subgroup of patients with superior prognosis among HR-patients. The CNA-profile is feasible in BFM-based protocols, further refining MRD-based risk-stratification.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: Cancers (Basel) Año: 2021 Tipo del documento: Article País de afiliación: Grecia Pais de publicación: Suiza
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: Cancers (Basel) Año: 2021 Tipo del documento: Article País de afiliación: Grecia Pais de publicación: Suiza