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PRENATAL STUDY IN FAMILY WITH SALT-WASTING FORM OF CONGENITAL ADRENAL HYPERPLASIA

https://doi.org/10.35266/2949-3447-2025-4-9

Abstract

The article describes a case of prenatal molecular genetic testing performed at 11 weeks and 2 days of gestation in a family that includes a proband who has a salt-wasting form of congenital adrenal hyperplasia. The authors aim to conduct a molecular prenatal study based on the proband’s identified pathogenic variants in the gene CYP21A2 as part of genetic counseling given the 25% potential risk of giving birth to a neonate with congenital adrenal hyperplasia. As a result, the molecular genetic testing reveals the following pathogenic variants in the gene CYP21A2: R357W (rs7769409) and Q319X (rs7755898) in a heterozygous state. The analysis of pathogenic variant inheritance confirms that the risk of the fetus having congenital adrenal hyperplasia is minimal.

About the Authors

N. S. Osinovskaya
Research Institute of Obstetrics, Gynecology and Reproductology named after D. O. Ott, Saint Petersburg
Russian Federation

Candidate of Sciences (Biology), Senior Researcher



Yu. A. Nasykhova
Research Institute of Obstetrics, Gynecology and Reproductology named after D. O. Ott, Saint Petersburg
Russian Federation

Candidate of Sciences (Biology), Head



N. I. Tapilskaya
Research Institute of Obstetrics, Gynecology and Reproductology named after D. O. Ott, Saint Petersburg
Russian Federation

Doctor of Sciences (Medicine), Professor, Head



A. S. Glotov
Research Institute of Obstetrics, Gynecology and Reproductology named after D. O. Ott, Saint Petersburg
Russian Federation

Doctor of Sciences (Biology), Head



References

1. Blanchong C. A., Zhou B., Rupert K. L. et al. Deficiencies of human complement component C4A and C4B and heterozygosity in length variants of RP-C4-CYP21-TNX (RCCX) modules in Caucasians. The load of RCCX genetic diversity on major histocompatibility complex-associated disease // Journal of Experimental Medicine. 2000. Vol. 191. P. 2183–2196.

2. Koppens P. F., Hoogenboezem T., Halley D. J. et al. Family studies of the steroid 21-hydroxylase and complement C4 genes define 11 haplotypes in classical congenital adrenal hyperplasia in the Netherlands // European Journal Pediatrics. 1992. Vol. 151. P. 885–892.

3. Merke D. P., Auchus R. J. Congenital adrenal hyperplasia due to 21-hydroxylase deficiency // The New England Journal of Medicine. 2020. Vol. 383, no. 13. P. 1248–1261. https://doi.org/10.1056/nejmra1909786.

4. Speiser P. W., White P. C. Congenital adrenal hyperplasia // The New England Journal of Medicine. 2003. Vol. 349. P. 776–788.

5. Monlong J., Chen X., Barseghyan H. et al. Long-read sequencing resolves the clinically relevant CYP21A2 locus, supporting a new clinical test for Congenital Adrenal Hyperplasia // Délot medRxiv. 2025. https://doi.org/10.1101/2025.02.07.25321404.

6. Карева М. А. Адреногенитальный синдром: современные аспекты диагностики и лечения // Фарматека. 2011. № s1–11. С. 34–39.

7. Miller S. A., Dykes D. D., Polesky H. F. A simple salting out procedure for extracting DNA from human nucleated cells // Nucleic Acids Research. 1988. Vol. 16, no. 3. P. 1215.

8. Kleinle S., Lang R., Fischer G. F. et. al. Duplications of the functional CYP21A2 gene are primarily restricted to Q318X alleles: Evidence for a founder effect // The Journal of Clinical Endocrinology & Metabolism. 2009. Vol. 94, no. 10. P. 3954–3958.


Review

For citations:


Osinovskaya N.S., Nasykhova Yu.A., Tapilskaya N.I., Glotov A.S. PRENATAL STUDY IN FAMILY WITH SALT-WASTING FORM OF CONGENITAL ADRENAL HYPERPLASIA. Vestnik SurGU. Meditsina. 2025;18(4):70-73. (In Russ.) https://doi.org/10.35266/2949-3447-2025-4-9

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ISSN 2949-3447 (Online)