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Genotype verification of cystic fibrosis patients as a major step towards precision Orkambi therapy

https://doi.org/10.25557/2073-7998.2022.09.65-68

Abstract

Cystic fibrosis is one of the most common genetic diseases not only in Russia but in the world, it dramatically reduces lifespan and quality of life in the absence of effective treatment. In a time of cystic fibrosis precision therapy, the effective treatment is based on the exact genotype determination. However, the diagnostic search should not always be finished when two pathogenic variants in CFTR gene are detected. In recent years there has been an explosive growth of research studies dedicated to, so-called, complex alleles, - the presence of two or more variants in the cis-position, which may affect in a dramatic way a therapeutic response. The study was aimed to determine the frequency of a complex allele p.[L467F;F508del], that affects the response to lumacaftor/ivacaftor (Orkambi) in cystic fibrosis Russian patients, being homozygous for F508del .

About the Authors

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


T. A. Adyan
Research Centre for Medical Genetics; Pirogov Russian National Research Medical University
Russian Federation


E. I. Kondratyeva
Research Centre for Medical Genetics
Russian Federation


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


References

1. Kerem B., Rommens J.M., Buchanan J.A. et al., Identification of the cystic fibrosis gene: genetic analysis. Science. 1989 Sep 8;245(4922):1073-80. doi: 10.1126/science.2570460.

2. www.hgmd.cf.ac.uk

3. Marson F.A.L., Bertuzzo C.S., Ribeiro J.D. Classification of CFTR mutation classes. Lancet Respir Med. 2016 Aug;4(8): e37-e38. doi: 10.1016/S2213-2600(16)30188-6.

4. Куцев С.И., Ижевская В.Л., Кондратьева Е.И. Таргетная терапия при муковисцидозе// Пульмонология. 2021;31(2):226-236. https://doi.org/10.18093/0869-0189-2021-31-2-226-236

5. Brogna S., Wen J. Nonsense-mediated mRNA decay (NMD) mechanisms. Nat Struct Mol Biol. 2009 Feb;16(2):107-13. doi: 10.1038/nsmb.1550. PMID: 19190664.

6. Регистр больных муковисцидозом в Российской Федерации. 2019 год./ Под редакцией Н.Ю. Каширской, Е.И. Кондратьевой, С.А. Красовского, М.А. Стариновой, А.Ю. Воронковой, Е.Л. Амелиной, И.К. Ашеровой.- М.: ИД «МЕДПРАКТИКА-М», 2021, 68 с.

7. https://www.symdeko.com/

8. InformedHealth.org [Internet]. Cologne, Germany: Institute for Quality and Efficiency in Health Care (IQWiG); 2006-. Tezacaftor / ivacaftor (Symkevi) for the treatment of cystic fibrosis: Overview. [Updated 2020 Oct 29]. Available from: https://www.ncbi.nlm.nih.gov/books/NBK563967/www.orkambi.com

9. https://www.kalydeco.com/

10. El-Seedy A., Girodon E., Norez C., et al., CFTR mutation combinations producing frequent complex alleles with different clinical and functional outcomes. Hum Mutat. 2012 Nov;33(11):1557-65. doi: 10.1002/humu.22129.

11. Chevalier B., Hinzpeter A. The influence of CFTR complex alleles on precision therapy of cystic fibrosis. J Cyst Fibros. 2020, doi: 10.1016/j.jcf.2019.12.008

12. Baatallah N., Bitam S., Martin N., et al., Cis variants identified in F508del complex alleles modulate CFTR channel rescue by small molecules. Hum Mutat. 2018 Apr;39(4):506-514. doi: 10.1002/humu.23389.

13. Cai Zw., Liu J., Li Hy. et al. Targeting F508del-CFTR to develop rational new therapies for cystic fibrosis. Acta Pharmacol Sin. 2011; 32: 693-701. https://doi.org/10.1038/aps.2011.71


Review

For citations:


Kovalskaia V.A., Adyan T.A., Kondratyeva E.I., Polyakov A.V. Genotype verification of cystic fibrosis patients as a major step towards precision Orkambi therapy. Medical Genetics. 2022;21(9):65-68. (In Russ.) https://doi.org/10.25557/2073-7998.2022.09.65-68

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ISSN 2073-7998 (Print)