rs6445
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Variant summary
Our verdict is Likely pathogenic. Variant got 7 ACMG points: 8P and 1B. PP5_Very_StrongBP4
The NM_000500.9(CYP21A2):c.1360C>T(p.Pro454Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00628 in 1,223,580 control chromosomes in the GnomAD database, including 3 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★).
Frequency
Genomes: 𝑓 0.0051 ( 0 hom., cov: 33)
Exomes 𝑓: 0.0065 ( 3 hom. )
Consequence
CYP21A2
NM_000500.9 missense
NM_000500.9 missense
Scores
2
8
5
Clinical Significance
Conservation
PhyloP100: 0.697
Genes affected
CYP21A2 (HGNC:2600): (cytochrome P450 family 21 subfamily A member 2) This gene encodes a member of the cytochrome P450 superfamily of enzymes. The cytochrome P450 proteins are monooxygenases which catalyze many reactions involved in drug metabolism and synthesis of cholesterol, steroids and other lipids. This protein localizes to the endoplasmic reticulum and hydroxylates steroids at the 21 position. Its activity is required for the synthesis of steroid hormones including cortisol and aldosterone. Mutations in this gene cause congenital adrenal hyperplasia. A related pseudogene is located near this gene; gene conversion events involving the functional gene and the pseudogene are thought to account for many cases of steroid 21-hydroxylase deficiency. Two transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Jul 2008]
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ACMG classification
Classification made for transcript
Verdict is Likely_pathogenic. Variant got 7 ACMG points.
PP5
Variant 6-32041006-C-T is Pathogenic according to our data. Variant chr6-32041006-C-T is described in ClinVar as [Likely_pathogenic]. Clinvar id is 12159.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr6-32041006-C-T is described in Lovd as [Pathogenic].
BP4
Computational evidence support a benign effect (MetaRNN=0.013331294). . Strength limited to SUPPORTING due to the PP5.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
CYP21A2 | NM_000500.9 | c.1360C>T | p.Pro454Ser | missense_variant | 10/10 | ENST00000644719.2 | NP_000491.4 | |
CYP21A2 | NM_001128590.4 | c.1270C>T | p.Pro424Ser | missense_variant | 9/9 | NP_001122062.3 | ||
CYP21A2 | NM_001368143.2 | c.955C>T | p.Pro319Ser | missense_variant | 10/10 | NP_001355072.1 | ||
CYP21A2 | NM_001368144.2 | c.955C>T | p.Pro319Ser | missense_variant | 9/9 | NP_001355073.1 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
CYP21A2 | ENST00000644719.2 | c.1360C>T | p.Pro454Ser | missense_variant | 10/10 | NM_000500.9 | ENSP00000496625 | P1 |
Frequencies
GnomAD3 genomes AF: 0.00509 AC: 771AN: 151528Hom.: 0 Cov.: 33
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GnomAD3 exomes AF: 0.00460 AC: 633AN: 137706Hom.: 2 AF XY: 0.00448 AC XY: 335AN XY: 74808
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GnomAD4 exome AF: 0.00645 AC: 6916AN: 1071934Hom.: 3 Cov.: 16 AF XY: 0.00641 AC XY: 3469AN XY: 541524
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GnomAD4 genome AF: 0.00508 AC: 771AN: 151646Hom.: 0 Cov.: 33 AF XY: 0.00463 AC XY: 343AN XY: 74058
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ClinVar
Significance: Pathogenic/Likely pathogenic
Submissions summary: Pathogenic:28Other:1
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
not provided Pathogenic:13
Pathogenic, criteria provided, single submitter | clinical testing | AiLife Diagnostics, AiLife Diagnostics | Jun 02, 2021 | - - |
Pathogenic, criteria provided, single submitter | clinical testing | Institute for Clinical Genetics, University Hospital TU Dresden, University Hospital TU Dresden | Nov 03, 2021 | - - |
Pathogenic, no assertion criteria provided | clinical testing | Joint Genome Diagnostic Labs from Nijmegen and Maastricht, Radboudumc and MUMC+ | - | - - |
Pathogenic, criteria provided, single submitter | clinical testing | Labcorp Genetics (formerly Invitae), Labcorp | Nov 01, 2022 | This sequence change replaces proline, which is neutral and non-polar, with serine, which is neutral and polar, at codon 454 of the CYP21A2 protein (p.Pro454Ser). The frequency data for this variant in the population databases (gnomAD) is considered unreliable due to the presence of homologous sequence, such as pseudogenes or paralogs, in the genome. This missense change has been observed in individual(s) with clinical features of non-classic congenital adrenal hyperplasia due to 21-hydroxylase deficiency (PMID: 1406699, 10720040, 12222711, 12887291, 21444649, 21843885, 22270556, 23073904, 31333583, 32966723). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. This variant is also known as P453S. ClinVar contains an entry for this variant (Variation ID: 12159). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt CYP21A2 protein function. Experimental studies have shown that this missense change affects CYP21A2 function (PMID: 18381579, 24953648, 30968594). For these reasons, this variant has been classified as Pathogenic. - |
Pathogenic, criteria provided, single submitter | clinical testing | Clinical Genetics and Genomics, Karolinska University Hospital | May 19, 2016 | - - |
Pathogenic, criteria provided, single submitter | clinical testing | Quest Diagnostics Nichols Institute San Juan Capistrano | Mar 13, 2023 | The variant seen in patients with salt-wasting phenotype (PMID: 12788866 (2003)) and simple virilizing phenotype (PMID: 18381579 (2008)). Functional evidence suggests that this variant may impact protein function. The variant occurs in multiple cases with a lone recessive pathogenic/likely pathogenic variant in the same gene, and have phenotype known to be consistent with disease. - |
Pathogenic, criteria provided, single submitter | clinical testing | Athena Diagnostics | Mar 13, 2023 | Frequency data for this variant in the general population cannot be distinguished from that of the CYP21P pseudogene, and are therefore uninformative in assessment of variant pathogenicity (Genome Aggregation Database (gnomAD), Cambridge, MA (URL: http://gnomad.broadinstitute.org)). This variant is reported to associate with non-classic congenital adrenal hyperplasia (CAH). This variant is also referred to as p.Pro453Ser (P453S) in published literature. In multiple individuals, this variant has been seen in trans with other recessive pathogenic variants in CYP21A2, suggesting this variant is also pathogenic. Assessment of experimental evidence suggests this variant results in abnormal protein function. This variant results in reduced enzymatic activity (PMID: 24953648). - |
Pathogenic, criteria provided, single submitter | clinical testing | Clinical Genetics Laboratory, Skane University Hospital Lund | May 27, 2022 | - - |
Pathogenic, no assertion criteria provided | clinical testing | Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center | - | - - |
Pathogenic, criteria provided, single submitter | clinical testing | Revvity Omics, Revvity | Aug 04, 2023 | - - |
Pathogenic, no assertion criteria provided | clinical testing | Genome Diagnostics Laboratory, Amsterdam University Medical Center | - | - - |
Pathogenic, no assertion criteria provided | clinical testing | Diagnostic Laboratory, Department of Genetics, University Medical Center Groningen | - | - - |
Pathogenic, criteria provided, single submitter | clinical testing | Eurofins Ntd Llc (ga) | Dec 29, 2014 | - - |
Classic congenital adrenal hyperplasia due to 21-hydroxylase deficiency Pathogenic:12Other:1
Pathogenic, criteria provided, single submitter | curation | Laboratory of Medical Genetics, National & Kapodistrian University of Athens | Feb 01, 2024 | - - |
Pathogenic, criteria provided, single submitter | clinical testing | Baylor Genetics | Oct 18, 2021 | - - |
Pathogenic, criteria provided, single submitter | clinical testing | Victorian Clinical Genetics Services, Murdoch Childrens Research Institute | May 06, 2021 | Based on the classification scheme VCGS_Germline_v1.3.4, this variant is classified as Pathogenic. Following criteria are met: 0102 - Loss of function is a known mechanism of disease in this gene and is associated with nonclassic type hyperandrogenism due to 21-hydroxylase deficiency (MIM#201910). (I) 0106 - This gene is associated with autosomal recessive disease. (I) 0200 - Variant is predicted to result in a missense amino acid change from proline to serine. (I) 0251 - This variant is heterozygous. (I) 0304 - Variant is present in gnomAD <0.01 for a recessive condition (v2: 757 heterozygotes, 2 homozygotes). (SP) 0504 - Same amino acid change has been observed in placental mammals. (SB) 0604 - Variant is not located in an established domain, motif, hotspot or informative constraint region. (I) 0801 - This variant has strong previous evidence of pathogenicity in unrelated individuals. It is regarded as definitely pathogenic by EMQN (PMID: 32616876) and is associated to the nonclassic type of hyperandrogenism due to 21-hydroxylase deficiency (ClinVar, LOVD, PMID: 31586465). (SP) 1208 - Inheritance information for this variant is not currently available in this individual. (I) Legend: (SP) - Supporting pathogenic, (I) - Information, (SB) - Supporting benign - |
Likely pathogenic, criteria provided, single submitter | clinical testing | 3billion | Sep 01, 2022 | It is observed in the gnomAD v2.1.1 ( https://gnomad.broadinstitute.org ) dataset at total allele frequency of 0.453%. Missense changes are a common disease-causing mechanism. In silico tool predictions suggest damaging effect of the variant on gene or gene product (REVEL: 0.45; 3Cnet: 0.88). Same nucleotide change resulting in same amino acid change has been previously reported as pathogenic/likely pathogenic with strong evidence (ClinVar ID: VCV000012159). Therefore, this variant is classified as Likely pathogenic according to the recommendation of ACMG/AMP guideline. - |
Pathogenic, no assertion criteria provided | curation | Reproductive Health Research and Development, BGI Genomics | Jan 06, 2020 | NM_000500.7:c.1360C>T in the CYP21A2 gene has an allele frequency of 0.009 in European (non-Finnish) subpopulation in the gnomAD database. The c.1360C>T (p.Pro454Ser) missense variant in the CYP21A2 gene, also known as p.Pro453Ser in literatures, has been previously found in 46.2% of 13 unrelated NC-CAH patients, but only 7.7% and 3.6% of salt-wasting CAH patients and blood donors, respectively (PMID: 1406699). In vitro functional assays in multiple studies demonstrated that, compared to the wild-type enzyme, this variant had decreased activity on both the 17-OHP and progesterone substrates (PMID: 24953648). Pathogenic computational verdict because pathogenic predictions from DANN, EIGEN, FATHMM-MKL, M-CAP, MutationTaster and SIFT. Taken together, we interprete this variant as Pathogenic/Likely pathogenic. ACMG/AMP Criteria applied: PP3, PS4, PS3. - |
Pathogenic, no assertion criteria provided | literature only | OMIM | Jun 01, 2008 | - - |
Pathogenic, criteria provided, single submitter | clinical testing | Fulgent Genetics, Fulgent Genetics | Oct 31, 2018 | - - |
Pathogenic, criteria provided, single submitter | clinical testing | Intergen, Intergen Genetics and Rare Diseases Diagnosis Center | Jul 26, 2023 | - - |
Pathogenic, criteria provided, single submitter | research | UNC Molecular Genetics Laboratory, University of North Carolina at Chapel Hill | - | The CYP21A2 c.1360C>T (p.P454S) missense variant has been reported in individuals with nonclassical late-onset 21-hydroxylase deficiency (PMID: 1406699; 18381579; 1496017). - |
Pathogenic, criteria provided, single submitter | clinical testing | Knight Diagnostic Laboratories, Oregon Health and Sciences University | Jul 18, 2016 | The c.1360C>T (p.Pro454Ser) missense variant in the CYP21A2 gene has been previously reported in multiple individuals affected with 21-OHD CAH and is associated with the non-classic form of this disorder (Owerbach et al., 1992; Vigliani and Buster, 2012; Skordis et al., 2015; Neocleous et al., 2014). This variant is present significantly more frequently in affected individuals than controls (OR = 18; 95%CI = 2.37-136), and is absent or reported at low frequency in the population databases (Exome Sequencing Project [ESP]; 1000 Genomes=0.6%; ExAC=0.88%). Furthermore, in vitro functional assays in multiple studies demonstrated that, compared to the wild-type enzyme, this variant had decreased activity on both the 17-OHP and progesterone substrates (Nikoshkov et al., 1997, Barbaro et al., 2015). Structural studies predict that Pro454 is positioned within a hydrophobic pocket, and that the p.Pro454Ser variant will disrupt the hydrophobicity of this region (Haider et al., 2013). In addition, Emory Genetics Laboratory has classified this variant as Pathogenic. Pathogenic variants in the CYP21A2 gene are the only known cause of 21-OHD CAH. Therefore, this collective evidence supports the classification of the c.1360C>T (p.Pro454Ser) as a Pathogenic variant for congenital adrenal hyperplasia. We have confirmed this finding in our laboratory using Sanger sequencing. - |
Pathogenic, criteria provided, single submitter | clinical testing | Women's Health and Genetics/Laboratory Corporation of America, LabCorp | Jun 29, 2022 | Variant summary: CYP21A2 c.1360C>T (p.Pro454Ser) results in a non-conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a damaging effect of the variant on protein function. The variant allele was found at a frequency of 0.0046 in 137706 control chromosomes in the gnomAD database, including 2 homozygotes. This frequency is not significantly higher than expected for a pathogenic variant in CYP21A2 causing Congenital Adrenal Hyperplasia/Non-Classic (0.0046 vs 0.032), allowing no conclusion about variant significance. c.1360C>T has been reported in the literature in multiple individuals affected with Congenital Adrenal Hyperplasia. These data indicate that the variant is very likely to be associated with disease. At least one publication reports experimental evidence evaluating an impact on protein function. The most pronounced variant effect results in 10%-<30% of normal activity (Helmberg_1992, Nikoshkov_1997, Soardi_2008). Ten clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. All laboratories classified the variant as pathogenic. Based on the evidence outlined above, the variant was classified as pathogenic. - |
Pathogenic, criteria provided, single submitter | clinical testing | Mendelics | May 04, 2022 | - - |
not provided, no classification provided | literature only | GeneReviews | - | - - |
CYP21A2-related disorder Pathogenic:1
Pathogenic, no assertion criteria provided | clinical testing | PreventionGenetics, part of Exact Sciences | Sep 23, 2024 | The CYP21A2 c.1360C>T variant is predicted to result in the amino acid substitution p.Pro454Ser. This variant is associated with autosomal recessive non-classic congenital adrenal hyperplasia (CAH) (also known as P453S; New et al. 2006. PubMed ID: 16912124; Nikoshkov et al. 1997. PubMed ID: 8989258; Soardi et al. 2008. PubMed ID: 18381579). This is a common deleterious variant, which likely originated from the pseudogene CYP21A1P via gene conversion. This variant is interpreted as pathogenic. - |
Congenital lipoid adrenal hyperplasia due to STAR deficency Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | MGZ Medical Genetics Center | Jul 26, 2021 | - - |
See cases Pathogenic:1
Pathogenic, criteria provided, single submitter | clinical testing | Institute of Human Genetics, University Hospital Muenster | Aug 19, 2022 | ACMG categories: PS3,PS4,PM1,PP3,PP5 - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
BayesDel_addAF
Benign
T
BayesDel_noAF
Benign
CADD
Uncertain
DANN
Uncertain
Eigen
Uncertain
Eigen_PC
Uncertain
FATHMM_MKL
Uncertain
D
M_CAP
Pathogenic
D
MetaRNN
Benign
T;T;T;T
MetaSVM
Benign
T
MutationTaster
Benign
A;A
PrimateAI
Uncertain
T
PROVEAN
Pathogenic
D;.;D;.
REVEL
Uncertain
Sift
Uncertain
D;.;D;.
Sift4G
Uncertain
D;.;D;.
Polyphen
D;D;.;D
Vest4
MVP
MPC
ClinPred
T
GERP RS
gMVP
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at