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Rom M, Schott R, Pencreac'h E, Cébula H, Cox D, Bender L, Antoni D, Lhermitte B, Noel G. [Impact of NGS results on patient outcome with a multiform glioblastoma]. Cancer Radiother 2022; 26:987-993. [PMID: 35715358 DOI: 10.1016/j.canrad.2022.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2021] [Revised: 01/01/2022] [Accepted: 01/17/2022] [Indexed: 11/18/2022]
Abstract
PURPOSE Although some genetic alterations in glioblastoma (GBM) have been characterized, the prognostic value of these gene mutations is not yet established in patients treated with standard therapy. PATIENTS AND METHOD 40 patients with newly diagnosed GBM, treated between July 2017 and December 2019, and who had genomic analysis were analyzed. Next-generation sequencing techniques (NGS) were used with a panel of 26 genes. Patients were grouped according to MGMT status, the presence or absence of at least one mutated gene on the panel, and p53 expression by immunohistochemistry. RESULTS the median follow-up was 11.5 months (1.0-37). For all patients, the median duration of progression-free survival was 8 months (95% CI, 5.3-10.7) and the median overall survival (OS) was 17 months (95% CI, 7.5-26.5). Progression-free and overall survival were significantly different according to MGMT status but not according to NGS and p53 status. Three groups of patients according to different combined status could be distinguished due to significant differences in overall survival. CONCLUSION we have shown that the presence of MGMT promoter methylation is a good prognostic factor. By grouping the patients according to their MGMT, NGS and p53 status, three groups of patients could be separated according to their overall survival. However, these results must be confirmed on a larger number of patients.
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Affiliation(s)
- M Rom
- ICANS-service de radiothérapie, Institut du Cancer Strasbourg-Europe, 17, rue Albert Calmette, 67033 Strasbourg, France; Service de radiothérapie - Hôpital Calmette, No. 3, Monivong Bvld, Sangkat Sras Chok, Khan Daun Penh, Phnom Penh, Royaume du Cambodge
| | - R Schott
- ICANS-service d'oncologie médicale, Institut du Cancer Strasbourg-Europe, 17, rue Albert Calmette, 67033 Strasbourg, France
| | - E Pencreac'h
- Service de biologie, CHU Hautepierre, 1, rue Molière, 67200 Strasbourg, France
| | - H Cébula
- Service de neurochirurgie - CHU Hautepierre, 1, rue Molière, 67200 Strasbourg, France
| | - D Cox
- IRFAC, Inserm U1113, 3, avenue Molière, 67000 Strasbourg, France; Research, Development in Precision Medicine, Institut de Cancérologie Strasbourg Europe (ICANS), 17, rue Albert Calmette, 67200 Strasbourg, France
| | - L Bender
- ICANS-service d'oncologie médicale, Institut du Cancer Strasbourg-Europe, 17, rue Albert Calmette, 67033 Strasbourg, France
| | - D Antoni
- ICANS-service de radiothérapie, Institut du Cancer Strasbourg-Europe, 17, rue Albert Calmette, 67033 Strasbourg, France
| | - B Lhermitte
- Service d'anatomopathologie, CHU Hautepierre, 1, rue Molière, 67200 Strasbourg, France
| | - G Noel
- ICANS-service de radiothérapie, Institut du Cancer Strasbourg-Europe, 17, rue Albert Calmette, 67033 Strasbourg, France.
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Guerin E, Raffelsberger W, Pencreac'h E, Neuville A, Schneider A, Lavaux T, Bachellier P, Rohr S, Guenot D, Gaub M. 445 POSTER Gene expression profiling of patient-derived colon xenograft tumors following treatment with irinotecan. EJC Suppl 2006. [DOI: 10.1016/s1359-6349(06)70450-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Guérin E, Entz-Werlé N, Eyer D, Pencreac'h E, Schneider A, Falkenrodt A, Uettwiller F, Babin A, Voegeli AC, Lessard M, Gaub MP, Lutz P, Oudet P. Modification of topoisomerase genes copy number in newly diagnosed childhood acute lymphoblastic leukemia. Leukemia 2003; 17:532-40. [PMID: 12646941 DOI: 10.1038/sj.leu.2402774] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Topoisomerase genes were analyzed at both DNA and RNA levels in 25 cases of newly diagnosed childhood acute lymphoblastic leukemia (ALL). The results of molecular analysis were compared to risk group classification of children in order to identify molecular characteristics associated with response to therapy. At diagnosis, allelic imbalance at topo-isomerase IIalpha (TOP2A) gene locus was found in 75% of informative cases whereas topoisomerase I and IIbeta gene loci are altered in none or only one case, respectively. By semi-quantitative Polymerase chain reaction, we found a 2.5 to 8-fold TOP2A gene amplification in 72% of the children, which was correlated to gene overexpression in every case. These results show that TOP2A gene amplification is a frequent event in ALL at diagnosis. Interestingly, we also identified a small population of children that do not present TOP2A gene amplification or gene overexpression and who are significantly associated with very high risk classified patients showing glucocorticoid resistance. In conclusion, characterization of TOP2A gene status in childhood ALL at diagnosis provides useful complementary information for risk assessment.
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Affiliation(s)
- E Guérin
- Laboratoire de Biochimie et de Biologie Moléculaire Hôpital de Hautepierre, Strasbourg, France
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