Article (Scientific journals)
Genetic evaluation of patients with multiple primary cancers.
Freire, Maria Valeria; Thissen, Romain; Martin, Marie et al.
2025In Oncology Letters, 29 (1), p. 4
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Keywords :
cancer predisposition genes; early cancers; multiple primary cancers; single nucleotide variants; whole exome sequencing; Oncology; Cancer Research
Abstract :
[en] Regarding inherited cancer predisposition, single gene carriers of pathogenic variants (PVs) have been extensively reported on in the literature, whereas the oligogenic coinheritance of heterozygous PVs in cancer-related genes is a poorly studied event. Currently, due to the increased number of cancer survivors, the probability of patients presenting with multiple primary cancers (MPCs) is higher. The present study included patients with MPCs aged ≤45 years without known PVs in common cancer predisposition genes. This study used whole exome sequencing (WES) of germline and tumoral DNA, chromosomal microarray analysis (CMA) of germline DNA (patients 1-7, 9 and 10), and a karyotype test of patient 8 to detect variants associated with the disease. The 10 patients included in the study presented a mean of 3 cancers per patient. CMA showed two microduplications and one microdeletion, while WES of the germline DNA identified 1-3 single nucleotide variants of potential interest to the disease in each patient and two additional copy number variants. Most of the identified variants were classified as variants of uncertain significance. The mapping of the germline variants into their pathways showed a possible additive effect of these as the cause of the cancer. A total of 12 somatic samples from 5 patients were available for sequencing. All of the germline variants were also present in the somatic samples, while no second hits were identified in the same genes. The sequencing of patients with early cancers, family history and multiple tumors is already a standard of care. However, growing evidence has suggested that the assessment of patients should not stop at the identification of one PV in a cancer predisposition gene.
Disciplines :
Genetics & genetic processes
Author, co-author :
Freire, Maria Valeria;  Department of Human Genetics, GIGA Research Center-University of Liège and CHU Liège, 4000 Liège, Belgium
Thissen, Romain ;  Université de Liège - ULiège > GIGA
Martin, Marie ;  Université de Liège - ULiège > Département des sciences cliniques
Fasquelle, Corinne ;  Centre Hospitalier Universitaire de Liège - CHU > > Service de génétique
HELOU, Laura  ;  Centre Hospitalier Universitaire de Liège - CHU > > Service de génétique
Durkin, Keith  ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques
Artesi, Maria ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques > Génétique humaine
Lumaka, Aimé;  Department of Human Genetics, GIGA Research Center-University of Liège and CHU Liège, 4000 Liège, Belgium ; Department of Human Genetics, CHU Liège, 4000 Liège, Belgium
LEROI, Natacha ;  Centre Hospitalier Universitaire de Liège - CHU > > Service de génétique
Segers, Karin;  Department of Human Genetics, CHU Liège, 4000 Liège, Belgium
DEBERG, Michelle ;  Centre Hospitalier Universitaire de Liège - CHU > > Service de génétique
Gatot, Jean-Stéphane  ;  Université de Liège - ULiège > Département des sciences cliniques
Habran, Lionel ;  Université de Liège - ULiège > Département des sciences biomédicales et précliniques
Palmeira, Leonor  ;  Université de Liège - ULiège > Département des sciences cliniques
Josse, Claire  ;  Université de Liège - ULiège > GIGA > GIGA Cancer - Human Genetics
Bours, Vincent ;  Université de Liège - ULiège > GIGA > GIGA Cancer - Human Genetics
More authors (6 more) Less
Language :
English
Title :
Genetic evaluation of patients with multiple primary cancers.
Publication date :
January 2025
Journal title :
Oncology Letters
ISSN :
1792-1074
eISSN :
1792-1082
Publisher :
Spandidos Publications, Greece
Volume :
29
Issue :
1
Pages :
4
Peer reviewed :
Peer Reviewed verified by ORBi
Funding text :
This work was supported by Televie (grant no. 7451419F); CHU Liege (grant no. 981481200); Region Wallonne (grant no. 1710180).The CHU Li\u00E8ge is a member of the GENTURIS (GENetic TUmor RISk) European Reference Network. This work was supported by Televie (grant no. 7451419F); CHU Liege (grant no. 981481200); Region Wallonne (grant no. 1710180).
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since 04 September 2025

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