Exploiting somatic oncogenic driver alterations in a patient with Li-Fraumeni syndrome– paving the path towards precision medicine: a case report

Abstract Background Li-Fraumeni syndrome (LFS) is an autosomal dominant tumor predisposition syndrome characterized by a high familial incidence of various malignancies. It results from pathogenic/likely pathogenic heterozygous constitutional variants of the TP53 gene. Due to impaired DNA damage rep...

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Main Authors: Carolin Seeling, Sonja Dahlum, Ralf Marienfeld, Vera Jan, Brigitte Rack, Uwe Gerstenmaier, Ambros J. Beer, Regine Mayer-Steinacker, Wolfgang Thaiss, Thomas F. E. Barth, Thomas Seufferlein, Nadine T. Gaisa, Stephan Stilgenbauer, Wolfgang Janni, Reiner Siebert, Hartmut Döhner, Verena I. Gaidzik
Format: Article
Language:English
Published: Springer 2025-01-01
Series:Journal of Cancer Research and Clinical Oncology
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Online Access:https://doi.org/10.1007/s00432-024-06077-7
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author Carolin Seeling
Sonja Dahlum
Ralf Marienfeld
Vera Jan
Brigitte Rack
Uwe Gerstenmaier
Ambros J. Beer
Regine Mayer-Steinacker
Wolfgang Thaiss
Thomas F. E. Barth
Thomas Seufferlein
Nadine T. Gaisa
Stephan Stilgenbauer
Wolfgang Janni
Reiner Siebert
Hartmut Döhner
Verena I. Gaidzik
author_facet Carolin Seeling
Sonja Dahlum
Ralf Marienfeld
Vera Jan
Brigitte Rack
Uwe Gerstenmaier
Ambros J. Beer
Regine Mayer-Steinacker
Wolfgang Thaiss
Thomas F. E. Barth
Thomas Seufferlein
Nadine T. Gaisa
Stephan Stilgenbauer
Wolfgang Janni
Reiner Siebert
Hartmut Döhner
Verena I. Gaidzik
author_sort Carolin Seeling
collection DOAJ
description Abstract Background Li-Fraumeni syndrome (LFS) is an autosomal dominant tumor predisposition syndrome characterized by a high familial incidence of various malignancies. It results from pathogenic/likely pathogenic heterozygous constitutional variants of the TP53 gene. Due to impaired DNA damage repair, conventional cytotoxic therapies or radiotherapy should be avoided whenever feasible to mitigate the high incidence of treatment-related secondary malignancies in these patients. However, there is limited evidence supporting the effectiveness of targeted therapy approaches in LFS patients. Case presentation We present the case of a woman with breast cancer and subsequent osteosarcoma, both treated with surgery and chemotherapy. Constitutional genetic germline testing identified a pathogenic TP53 variant in line with the clinical features of Li-Fraumeni syndrome. Subsequent molecular analysis of the osteosarcoma tissue revealed homozygous loss of the CDKN2A gene locus, warranting treatment with CDK4/6 inhibitor palbociclib. Palbociclib therapy was discontinued after one year with no evidence of disease. One year later, ovarian cancer was diagnosed, with molecular analysis indicating interstitial heterozygous loss of the BRCA2 gene locus, providing a rationale for targeted therapy with the PARP inhibitor olaparib. Conclusions In the era of accessible and comprehensive genetic and phenotypic tumor profiling, this case study of a patient with Li-Fraumeni syndrome underscores the success of precision oncology in harnessing additional somatic oncogenic driver alterations. Furthermore, it emphasizes the indispensable role of an interdisciplinary molecular tumor board, enhancing the awareness of molecular profiling and targeted therapies in patients with rare cancer susceptibility disorders.
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spelling doaj-art-db6bdf601f6042f699d37e22a6e012a92025-02-09T12:10:25ZengSpringerJournal of Cancer Research and Clinical Oncology1432-13352025-01-01151111210.1007/s00432-024-06077-7Exploiting somatic oncogenic driver alterations in a patient with Li-Fraumeni syndrome– paving the path towards precision medicine: a case reportCarolin Seeling0Sonja Dahlum1Ralf Marienfeld2Vera Jan3Brigitte Rack4Uwe Gerstenmaier5Ambros J. Beer6Regine Mayer-Steinacker7Wolfgang Thaiss8Thomas F. E. Barth9Thomas Seufferlein10Nadine T. Gaisa11Stephan Stilgenbauer12Wolfgang Janni13Reiner Siebert14Hartmut Döhner15Verena I. Gaidzik16Department of Internal Medicine III, University Hospital UlmInstitute of Human Genetics, University Hospital Ulm and University of UlmInstitute of Pathology, University Hospital UlmInstitute of Human Genetics, University Hospital Ulm and University of UlmDepartment of Gynecology and Obstetrics, University Hospital UlmInstitute of Pathology, University Hospital UlmDepartment of Nuclear Medicine, University Hospital UlmDepartment of Internal Medicine III, University Hospital UlmDepartment of Nuclear Medicine, University Hospital UlmInstitute of Pathology, University Hospital UlmDepartment of Internal Medicine I, University Hospital UlmInstitute of Pathology, University Hospital UlmDepartment of Internal Medicine III, University Hospital UlmDepartment of Gynecology and Obstetrics, University Hospital UlmInstitute of Human Genetics, University Hospital Ulm and University of UlmDepartment of Internal Medicine III, University Hospital UlmDepartment of Internal Medicine III, University Hospital UlmAbstract Background Li-Fraumeni syndrome (LFS) is an autosomal dominant tumor predisposition syndrome characterized by a high familial incidence of various malignancies. It results from pathogenic/likely pathogenic heterozygous constitutional variants of the TP53 gene. Due to impaired DNA damage repair, conventional cytotoxic therapies or radiotherapy should be avoided whenever feasible to mitigate the high incidence of treatment-related secondary malignancies in these patients. However, there is limited evidence supporting the effectiveness of targeted therapy approaches in LFS patients. Case presentation We present the case of a woman with breast cancer and subsequent osteosarcoma, both treated with surgery and chemotherapy. Constitutional genetic germline testing identified a pathogenic TP53 variant in line with the clinical features of Li-Fraumeni syndrome. Subsequent molecular analysis of the osteosarcoma tissue revealed homozygous loss of the CDKN2A gene locus, warranting treatment with CDK4/6 inhibitor palbociclib. Palbociclib therapy was discontinued after one year with no evidence of disease. One year later, ovarian cancer was diagnosed, with molecular analysis indicating interstitial heterozygous loss of the BRCA2 gene locus, providing a rationale for targeted therapy with the PARP inhibitor olaparib. Conclusions In the era of accessible and comprehensive genetic and phenotypic tumor profiling, this case study of a patient with Li-Fraumeni syndrome underscores the success of precision oncology in harnessing additional somatic oncogenic driver alterations. Furthermore, it emphasizes the indispensable role of an interdisciplinary molecular tumor board, enhancing the awareness of molecular profiling and targeted therapies in patients with rare cancer susceptibility disorders.https://doi.org/10.1007/s00432-024-06077-7Molecular tumor board - Li-Fraumeni syndromePrecision oncologyTargeted therapyCase report
spellingShingle Carolin Seeling
Sonja Dahlum
Ralf Marienfeld
Vera Jan
Brigitte Rack
Uwe Gerstenmaier
Ambros J. Beer
Regine Mayer-Steinacker
Wolfgang Thaiss
Thomas F. E. Barth
Thomas Seufferlein
Nadine T. Gaisa
Stephan Stilgenbauer
Wolfgang Janni
Reiner Siebert
Hartmut Döhner
Verena I. Gaidzik
Exploiting somatic oncogenic driver alterations in a patient with Li-Fraumeni syndrome– paving the path towards precision medicine: a case report
Journal of Cancer Research and Clinical Oncology
Molecular tumor board - Li-Fraumeni syndrome
Precision oncology
Targeted therapy
Case report
title Exploiting somatic oncogenic driver alterations in a patient with Li-Fraumeni syndrome– paving the path towards precision medicine: a case report
title_full Exploiting somatic oncogenic driver alterations in a patient with Li-Fraumeni syndrome– paving the path towards precision medicine: a case report
title_fullStr Exploiting somatic oncogenic driver alterations in a patient with Li-Fraumeni syndrome– paving the path towards precision medicine: a case report
title_full_unstemmed Exploiting somatic oncogenic driver alterations in a patient with Li-Fraumeni syndrome– paving the path towards precision medicine: a case report
title_short Exploiting somatic oncogenic driver alterations in a patient with Li-Fraumeni syndrome– paving the path towards precision medicine: a case report
title_sort exploiting somatic oncogenic driver alterations in a patient with li fraumeni syndrome paving the path towards precision medicine a case report
topic Molecular tumor board - Li-Fraumeni syndrome
Precision oncology
Targeted therapy
Case report
url https://doi.org/10.1007/s00432-024-06077-7
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