rs61752786
Variant summary
Our verdict is Uncertain significance. Variant got 5 ACMG points: 5P and 0B. PP3_StrongPP5
The NM_000497.4(CYP11B1):c.1120C>T(p.Arg374Trp) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000137 in 1,602,308 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Synonymous variant affecting the same amino acid position (i.e. R374R) has been classified as Benign.
Frequency
Consequence
NM_000497.4 missense, splice_region
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 5 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
---|---|---|---|---|---|---|---|---|
CYP11B1 | NM_000497.4 | c.1120C>T | p.Arg374Trp | missense_variant, splice_region_variant | Exon 6 of 9 | ENST00000292427.10 | NP_000488.3 | |
CYP11B1 | NM_001026213.1 | c.1120C>T | p.Arg374Trp | missense_variant, splice_region_variant | Exon 6 of 8 | NP_001021384.1 |
Ensembl
Frequencies
GnomAD3 genomes AF: 0.0000352 AC: 5AN: 141948Hom.: 0 Cov.: 31
GnomAD3 exomes AF: 0.00000402 AC: 1AN: 248518Hom.: 0 AF XY: 0.00000743 AC XY: 1AN XY: 134656
GnomAD4 exome AF: 0.0000116 AC: 17AN: 1460360Hom.: 0 Cov.: 33 AF XY: 0.0000124 AC XY: 9AN XY: 726520
GnomAD4 genome AF: 0.0000352 AC: 5AN: 141948Hom.: 0 Cov.: 31 AF XY: 0.0000723 AC XY: 5AN XY: 69164
ClinVar
Submissions by phenotype
Deficiency of steroid 11-beta-monooxygenase Pathogenic:2
The variant is observed at an extremely low frequency in the gnomAD v2.1.1 dataset (total allele frequency: <0.001%). In silico tool predictions suggest damaging effect of the variant on gene or gene product (REVEL: 0.89; 3Cnet: 0.90). Same nucleotide change resulting in same amino acid change has been previously reported to be associated with CYP11B1 related disorder (ClinVar ID: VCV000035982). The variant has been observed in at least two similarly affected unrelated individuals (SCV000052290.1). A different missense change at the same codon (p.Arg374Gln) has been reported to be associated with CYP11B1 related disorder (ClinVar ID: VCV000001174 / PMID: 8506298). Therefore, this variant is classified as likely pathogenic according to the recommendation of ACMG/AMP guideline. -
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not provided Pathogenic:1Uncertain:1
This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 374 of the CYP11B1 protein (p.Arg374Trp). This variant is present in population databases (rs61752786, gnomAD 0.007%). This missense change has been observed in individual(s) with congenital adrenal hyperplasia (PMID: 28228528; Invitae). In at least one individual the data is consistent with being in trans (on the opposite chromosome) from a pathogenic variant. ClinVar contains an entry for this variant (Variation ID: 35982). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant is likely to be disruptive. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. -
Published functional studies demonstrate a damaging effect: almost complete loss of 11-beta-hydroxylase activity (PMID: 36929050); Not observed at significant frequency in large population cohorts (gnomAD); This variant is associated with the following publications: (PMID: 36929050, 29858860, 28228528, 28641572, 35499511, 35067946, 36343887, Wei2016[poster]) -
Deficiency of steroid 11-beta-monooxygenase;C3838731:Glucocorticoid-remediable aldosteronism Pathogenic:1
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Congenital adrenal hyperplasia Pathogenic:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at