chrX-30308474-A-G

Position:

• chrX-30308474-A-G

Variant summary

Our verdict is Likely pathogenic. Variant got 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_000475.5(NR0B1):​c.890T>C​(p.Leu297Pro) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 23)
• Consequence: NR0B1 NM_000475.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter P:2 U:1
• Conservation: PhyloP100: 6.98

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 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.988

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
NR0B1	NM_000475.5	c.890T>C	p.Leu297Pro	missense_variant	1/2	ENST00000378970.5	NP_000466.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
NR0B1	ENST00000378970.5	c.890T>C	p.Leu297Pro	missense_variant	1/2	1	NM_000475.5	ENSP00000368253	P1
NR0B1	ENST00000378963.1	c.5T>C	p.Leu2Pro	missense_variant	1/2	2		ENSP00000368246

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 23

ClinVar

Significance: Uncertain significance

Submissions summary: Pathogenic:2 Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Congenital adrenal hypoplasia, X-linked Pathogenic:2

Pathogenic, no assertion criteria provided	literature only	OMIM	Mar 01, 2003	- -
Pathogenic, no assertion criteria provided	clinical testing	Clinical Molecular Genetics Laboratory, Johns Hopkins All Children's Hospital	Feb 27, 2010	- -

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

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Feb 09, 2023

This sequence change replaces leucine, which is neutral and non-polar, with proline, which is neutral and non-polar, at codon 297 of the NR0B1 protein (p.Leu297Pro). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individuals with clinical features of X-linked congenital adrenal hypoplasia (PMID: 12629128; Invitae). ClinVar contains an entry for this variant (Variation ID: 10976). 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 expected to disrupt NR0B1 protein function. Experimental studies have shown that this missense change affects NR0B1 function (PMID: 12629128). 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. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.98
BayesDel_addAF	Pathogenic	0.71	D
BayesDel_noAF	Pathogenic	0.78
CADD	Pathogenic	26
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.98	D;.
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Uncertain	0.90	D;T
M_CAP	Pathogenic	0.95	D
MetaRNN	Pathogenic	0.99	D;D
MetaSVM	Pathogenic	1.1	D
MutationAssessor	Pathogenic	3.3	M;.
MutationTaster	Benign	1.0	A;A;A
PrimateAI	Uncertain	0.65	T
PROVEAN	Pathogenic	-6.8	D;D
REVEL	Pathogenic	0.95
Sift	Pathogenic	0.0	D;D
Sift4G	Pathogenic	0.0010	D;D
Polyphen		1.0	D;.
Vest4		0.89
MutPred		0.98		Loss of stability (P = 0.0672);.;
MVP		1.0
MPC		2.0
ClinPred		1.0	D
GERP RS		5.3
Varity_R		0.99
gMVP		0.98

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

LitVar

Other links and lift over

dbSNP: rs104894907; hg19: chrX-30326591;