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      Genotype-phenotype correlation in patients with 21-hydroxylase deficiency

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          Abstract

          Introduction

          21-hydroxylase deficiency (21OHD) is the most common cause of congenital adrenal hyperplasia (CAH). However, patients with 21OHD manifest various phenotypes due to a wide-spectrum residual enzyme activity of different CYP21A2 mutations.

          Methods

          A total of 15 individuals from three unrelated families were included in this study. Target Capture-Based Deep Sequencing and Restriction Fragment Length Polymorphism was conducted on peripheral blood DNA of the three probands to identify potential mutations/deletions in CYP21A2; Sanger sequencing was conducted with the DNA from the family members of the probands.

          Results

          Dramatically different phenotypes were seen in the three probands of CAH with different compound heterozygous mutations in CYP21A2. Proband 1 manifested simple virilizing with mutations of 30-kb deletion/c.[188A>T;518T>A], the latter is a novel double mutants classified as SV associated mutation. Although both probands carry the same compound mutations [293-13C>G]:[518T>A], gonadal dysfunction and giant bilateral adrenal myelolipoma were diagnosed for proband 2 and proband 3, respectively.

          Conclusion

          Both gender and mutations contribute to the phenotypes, and patients with the same compound mutations and gender could present with different phenotypes. Genetic analysis could help the etiologic diagnosis, especially for atypical 21OHD patients.

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          Most cited references32

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          Congenital Adrenal Hyperplasia Due to Steroid 21-Hydroxylase Deficiency: An Endocrine Society* Clinical Practice Guideline

          To update the congenital adrenal hyperplasia due to steroid 21-hydroxylase deficiency clinical practice guideline published by the Endocrine Society in 2010.
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            Congenital adrenal hyperplasia

            Congenital adrenal hyperplasia is a group of autosomal recessive disorders encompassing enzyme deficiencies in the adrenal steroidogenesis pathway that lead to impaired cortisol biosynthesis. Depending on the type and severity of steroid block, patients can have various alterations in glucocorticoid, mineralocorticoid, and sex steroid production that require hormone replacement therapy. Presentations vary from neonatal salt wasting and atypical genitalia, to adult presentation of hirsutism and irregular menses. Screening of neonates with elevated 17-hydroxyprogesterone concentrations for classic (severe) 21-hydroxylase deficiency, the most common type of congenital adrenal hyperplasia, is in place in many countries, however cosyntropin stimulation testing might be needed to confirm the diagnosis or establish non-classic (milder) subtypes. Challenges in the treatment of congenital adrenal hyperplasia include avoidance of glucocorticoid overtreatment and control of sex hormone imbalances. Long-term complications include abnormal growth and development, adverse effects on bone and the cardiovascular system, and infertility. Novel treatments aim to reduce glucocorticoid exposure, improve excess hormone control, and mimic physiological hormone patterns.
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              Congenital Adrenal Hyperplasia Due to 21-Hydroxylase Deficiency

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                Author and article information

                Contributors
                Journal
                Front Endocrinol (Lausanne)
                Front Endocrinol (Lausanne)
                Front. Endocrinol.
                Frontiers in Endocrinology
                Frontiers Media S.A.
                1664-2392
                13 March 2023
                2023
                : 14
                : 1095719
                Affiliations
                [1] 1 Department of Urology, Daping Hospital, Army Medical University , Chongqing, China
                [2] 2 Fifteen Squadron Five Brigade, School of Basic Medical Science, Army Medical University , Chongqing, China
                [3] 3 Department of Bio-Medical Sciences, Philadelphia College of Osteopathic Medicine , Philadelphia, PA, United States
                Author notes

                Edited by: Semra Çaglar Çetinkaya, University of Health Sciences, Türkiye

                Reviewed by: Sifeng Qu, Shandong University, China; Tony Yuen, Icahn School of Medicine at Mount Sinai, United States

                *Correspondence: Jun Jiang, jiangjun_64@ 123456163.com ; Weihua Lan, doclan@ 123456yeah.net

                †These authors have contributed equally to this work and share first authorship

                This article was submitted to Adrenal Endocrinology, a section of the journal Frontiers in Endocrinology

                Article
                10.3389/fendo.2023.1095719
                10042299
                3f38bd66-0757-4a85-a354-a02307dca39f
                Copyright © 2023 Tang, Zhang, Peng, Wang, Li, Wang, Zhang, Huang, Xu, Zhang, Liu, Wang, Lan and Jiang

                This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

                History
                : 11 November 2022
                : 26 January 2023
                Page count
                Figures: 3, Tables: 2, Equations: 0, References: 32, Pages: 7, Words: 2843
                Funding
                Funded by: Army Medical University , doi 10.13039/501100012397;
                Award ID: 2018XLC3073 , 2018XLC1014
                This work was supported by University Research Project of Army Medical University (2018XLC3073 for JZ; 2018XLC1014 and 2019CXLCB006 for JJ).
                Categories
                Endocrinology
                Original Research

                Endocrinology & Diabetes
                congenital adrenal hyperplasia,21ohd,genotype,phenotype,cyp21a2
                Endocrinology & Diabetes
                congenital adrenal hyperplasia, 21ohd, genotype, phenotype, cyp21a2

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