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Diagnostic aspects in the patients with mosaic form of hereditary cancer syndromes

https://doi.org/10.25557/2073-7998.2025.10.111-113

Abstract

The mosaic form of hereditary tumor syndromes (HTS) often was not timely diagnosed due to a small percentage of the mutant allele in the blood DNA. We have described a modern algorithm for genetic laboratory diagnostics of HTS using examples of a patients with von Hippel-Lindau syndrome and retinoblastoma, which included the analysis of available primary tumors and verification of the identified pathogenic variant in blood by deep targeted sequencing.

About the Authors

D. S. Mikhaylenko
Research Centre for Medical Genetics ; I.M. Sechenov First Moscow State Medical University (Sechenov University)
Russian Federation

1, Moskvorechie st., Moscow, 115522 

8, Trubetskaya st., Moscow, 119991 



E. A. Alekseeva
Research Centre for Medical Genetics ; I.M. Sechenov First Moscow State Medical University (Sechenov University)
Russian Federation

1, Moskvorechie st., Moscow, 115522 

8, Trubetskaya st., Moscow, 119991 



N. B. Kuryakova
Research Centre for Medical Genetics
Russian Federation

1, Moskvorechie st., Moscow, 115522 



O. V. Babenko
Research Centre for Medical Genetics
Russian Federation

1, Moskvorechie st., Moscow, 115522 



E. B. Kuznetsova
Research Centre for Medical Genetics ; I.M. Sechenov First Moscow State Medical University (Sechenov University)
Russian Federation

1, Moskvorechie st., Moscow, 115522 

8, Trubetskaya st., Moscow, 119991 



A. V. Efremova
Research Centre for Medical Genetics
Russian Federation

1, Moskvorechie st., Moscow, 115522 



I. V. Volodin
Research Centre for Medical Genetics
Russian Federation

1, Moskvorechie st., Moscow, 115522 



V. V. Musatova
Research Centre for Medical Genetics
Russian Federation

1, Moskvorechie st., Moscow, 115522 



D. V. Zaletaev
Research Centre for Medical Genetics
Russian Federation

1, Moskvorechie st., Moscow, 115522 



V. V. Strelnikov
Research Centre for Medical Genetics
Russian Federation

1, Moskvorechie st., Moscow, 115522 



References

1. Chen J.L., Miller D.T., Schmidt L.S., et al. Mosaicism in tumor suppressor gene syndromes: prevalence, diagnostic strategies, and transmission risk. Annu Rev Genomics Hum Genet 2022; 23: 331-361.

2. Mikhailenko D.S., Shchagina O.A., Tyulpakov A.N., et al. Molekulyarnogeneticheskaya diagnostika sindroma Khippelya-Lindau. Uchebnometodicheskoye posobiye [Molecular genetic diagnostics of von HippelLindau syndrome. Study guide]. M.: Izd-vo «Triumf» [Moscow: Triumph Publishing House], 2021. – 44 p. (In Russ.)

3. Mikhaylenko D.S., Kuryakova N.B., Efremova A.V., et al. Mosaic form of von Hippel-Lindau syndrome: case report and literature review. Int J Mol Sci. 2025;26(6):2751.

4. Jung N.Y., Park J.B. Von Hippel-Lindau disease: a comprehensive review of diagnosis, genetics, clinical challenges, and surveillance. J Korean Neurosurg Soc. 2025;68(3):338-349.

5. NCCN Clinical Practice Guidelines in Oncology. Kidney Cancer. Version 3.2025. URL: https://www.nccn.org/professionals/physician_gls/pdf/kidney.pdf. Date of access 04.07.2025.

6. Zhang Y., Nguyen C.C., Zhang N.T., et al. Neurological applications of belzutifan in von Hippel-Lindau disease. Neuro Oncol 2023; 25(5): 827-838.

7. Zhou M., Tang J., Fan J., et al. Recent progress in retinoblastoma: pathogenesis, presentation, diagnosis and management. Asia Pac J Ophthalmol (Phila). 2024;13(2):100058.

8. Alekseeva E.A., Babenko O.V., Kozlova V.M., et al. Parental origin of the RB1 gene mutations in families with low penetrance hereditary retinoblastoma. Cancers (Basel) 2021; 13(20): 5068.

9. Gomez-Mariano G., Hernandez-SanMiguel E., Fernandez-Prieto M. et al. Mosaicism and intronic variants in RB1 gene revealed by next generation sequencing in a cohort of Spanish retinoblastoma patients. Exp Eye Res. 2025;251:110233.


Review

For citations:


Mikhaylenko D.S., Alekseeva E.A., Kuryakova N.B., Babenko O.V., Kuznetsova E.B., Efremova A.V., Volodin I.V., Musatova V.V., Zaletaev D.V., Strelnikov V.V. Diagnostic aspects in the patients with mosaic form of hereditary cancer syndromes. Medical Genetics. 2025;24(10):111-113. (In Russ.) https://doi.org/10.25557/2073-7998.2025.10.111-113

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ISSN 2073-7998 (Print)