Congenital Adrenal Hyperplasia Due to 21-Hydroxylase Deficiency (Salt-Losing Form and Simple Virilizing Form): Long-Term Results of Treatment

Author(s):  
Claude J. Migeon
2019 ◽  
Vol 32 (5) ◽  
pp. 543-547 ◽  
Author(s):  
Maja Tankoska ◽  
Violeta Anastasovska ◽  
Marina Krstevska-Konstantinova ◽  
Michel Naydenov ◽  
Mirjana Kocova

Abstract Background Steroid 21-hydroxylase deficiency is an autosomal recessive disorder, present in 90–95% of all cases with congenital adrenal hyperplasia (CAH). The classical simple virilizing (SV) form of the disease causes virilization of the external genitalia in newborn females and pseudo-precocious puberty in both sexes, due to reactive androgen overproduction. Case presentation We describe a 3.5-year-old girl presenting with pubarche, P2 according to Tanner, advanced bone age of 6 years and 10 months, and high serum levels of 17-hydroxyprogesterone (17-OHP). Molecular analysis of the nine most common pseudogene-derived CYP21A2 point mutations was performed in the patient and her family members using the polymerase chain reaction/amplification-created restriction site (PCR/ACRS) method. We detected the P30L/I172N genotype in the patient. She had inherited a mild P30L mutation from her mother and a severe I172N mutation from her father. Conclusions Although the CAH phenotype is determined by the allele that produces most of the enzyme activity and the mild non-classical (NC) phenotype should be expected, the mild P30L known to be more virilizing probably induced the classical SV phenotype in our patient. A continuous regimen of hydrocortisone at a recommended dose failed to decrease the 17-OHP sufficiently. Careful tapering of the dose did not help, and her pubic hair advanced to P3 according to Tanner. Individually tailored treatment is warranted in this patient.


2010 ◽  
Vol 2010 ◽  
pp. 1-7 ◽  
Author(s):  
T. H. Johannsen ◽  
C. P. L. Ripa ◽  
E. Carlsen ◽  
J. Starup ◽  
O. H. Nielsen ◽  
...  

2012 ◽  
Vol 344 (5) ◽  
pp. 363-373 ◽  
Author(s):  
Mouna Feki Mnif ◽  
Mahdi Kamoun ◽  
Fatma Mnif ◽  
Nadia Charfi ◽  
Nozha Kallel ◽  
...  

2019 ◽  
Vol 110 (11-12) ◽  
pp. 938-949 ◽  
Author(s):  
Matthias K. Auer ◽  
Aniko Krumbholz ◽  
Martin Bidlingmaier ◽  
Detlef Thieme ◽  
Nicole Reisch

2006 ◽  
Vol 67 (6) ◽  
pp. 268-276 ◽  
Author(s):  
Anne Bachelot ◽  
Geneviève Plu-Bureau ◽  
Elisabeth Thibaud ◽  
Kathleen Laborde ◽  
Graziella Pinto ◽  
...  

2019 ◽  
Vol 32 (12) ◽  
pp. 1311-1320
Author(s):  
Murat Karaoglan

Abstract Background The genotype-phenotype relationship shows regional variability in 21-hydroxylase deficiency (21-OHD) caused by mutations in the CYP21A2 gene. This study focuses on the genotype-phenotype compatibility between patients and their siblings in a region where consanguineous marriage is common. Methods The most common mutations (I2G-P30L-I172N-V237E-M239K-V281L-Q318X-R356W-F306 + nt) were studied in 60 children with 21-OHD and 40 siblings (12 symptomatic and 28 asymptomatic; mean age 5.89 ± 4.63 and 8.34 ± 2.22 years, respectively). The allele number (patients; 93 siblings; 70 alleles) was counted for each case. Salt wasting (SW; n = 38), simple virilizing (SV; n = 11) and non-classical congenital adrenal hyperplasia (NCCAH; n = 11) types were compared with their genotypes classified into groups Null-AB-C-D-E based on enzyme impairment. Results Disease-causing mutations were identified in unrelated alleles: 80 out of 93 alleles (86%) in the patients: SW, 51/56 (91%); SV, 14/16 (87.4%) and NCCAH, 15/21 (71.4%). There were 43 out of 70 alleles (61.4%) in the siblings (asymptomatic, 25/50 [50%]; symptomatic, 18/20 [90%]). The most frequently detected mutations in the patients were: I2G (22%), Q318X-P30L-V281L (13% each). The distribution of the most common mutations by clinical types was: SW: I2G-Q318X (30.2%-19.6%), SV: I172NI2G (37.5%-18.7%), NCCAH: V281L-P30L (33.3%-28.5%). In patients and symptomatic siblings, the concordance percentages by genotype groups were: Null (100%-100%), A (85%-60%), B (100%-Not applicable), C (41.6%-50%). Eleven out of 28 asymptomatic siblings had disease-causing mutations (four, severe; one, moderate; six, mild). The distribution of genotypes by phenotypes were: SW: Null-A (88%), SV: B-A (50%-41.6%), NCCAH: C (100%). Conclusions This study showed that the most common alleles were IN2G-Q381X-R356W-P30L-V281L in the children with 21-OHD and asymptomatic siblings, and that the phenotype can be predicted from the genotype except for the P30L-V281L. This result suggests that the most common mutations in 21-OHD are similar to previous reports, but that the genotype-phenotype compatibility is good except for group C showing regional variability, and that genotyping of siblings discovered new patients.


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