chrX-30304699-AC-A

Position:

• chrX-30304699-AC-A

Variant summary

Our verdict is Likely pathogenic. Variant got 8 ACMG points: 8P and 0B. PVS1_Strong PM2 PP5_Moderate

The NM_000475.5(NR0B1):​c.1292del​(p.Ser431IlefsTer6) variant causes a frameshift change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Pathogenic (★).

• Frequency: Genomes: not found (cov: 23)
• Consequence: NR0B1 NM_000475.5 frameshift
• Clinical Significance: Pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 3.70

Genes affected

NR0B1 (HGNC:7960): (nuclear receptor subfamily 0 group B member 1) This gene encodes a protein that contains a DNA-binding domain. The encoded protein acts as a dominant-negative regulator of transcription which is mediated by the retinoic acid receptor. This protein also functions as an anti-testis gene by acting antagonistically to Sry. Mutations in this gene result in both X-linked congenital adrenal hypoplasia and hypogonadotropic hypogonadism. [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_pathogenic. Variant got 8 ACMG points.

• PVS1: Loss of function variant, product does not undergo nonsense mediated mRNA decay. Variant is located in the 3'-most exon, not predicted to undergo nonsense mediated mRNA decay. There are 7 pathogenic variants in the truncated region.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant X-30304699-AC-A is Pathogenic according to our data. Variant chrX-30304699-AC-A is described in ClinVar as [Pathogenic]. Clinvar id is 2138497.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chrX-30304699-AC-A is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NR0B1	NM_000475.5	c.1292del	p.Ser431IlefsTer6	frameshift_variant	2/2	ENST00000378970.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NR0B1	ENST00000378970.5	c.1292del	p.Ser431IlefsTer6	frameshift_variant	2/2	1	NM_000475.5	P1

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 23

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

Congenital adrenal hypoplasia, X-linked;C1848296:46,XY sex reversal 2 Pathogenic:1

Pathogenic, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Jun 22, 2022

For these reasons, this variant has been classified as Pathogenic. This variant disrupts a region of the NR0B1 protein in which other variant(s) (p.Ile439Glnfs*5) have been observed in individuals with NR0B1-related conditions (PMID: 22761912). This suggests that this is a clinically significant region of the protein, and that variants that disrupt it are likely to be disease-causing. This premature translational stop signal has been observed in individuals with X-linked adrenal hypoplasia (PMID: 7609262, 26500747). This variant is not present in population databases (gnomAD no frequency). This sequence change creates a premature translational stop signal (p.Ser431Ilefs*6) in the NR0B1 gene. While this is not anticipated to result in nonsense mediated decay, it is expected to disrupt the last 40 amino acid(s) of the NR0B1 protein. -

Computational scores

Source: dbNSFP v4.3

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chrX-30322816;