3-119807443-T-A

Variant names:

• chr3-119807443-T-A
• NM_003889.4:c.193T>A

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM2 PP3_Strong

The NM_003889.4(NR1I2):​c.193T>A​(p.Phe65Ile) variant causes a missense change involving the alteration of a conserved nucleotide. 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: 32)
• Consequence: NR1I2 NM_003889.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 7.64
• Publications: 0 publications found

Genes affected

NR1I2 (HGNC:7968): (nuclear receptor subfamily 1 group I member 2) This gene product belongs to the nuclear receptor superfamily, members of which are transcription factors characterized by a ligand-binding domain and a DNA-binding domain. The encoded protein is a transcriptional regulator of the cytochrome P450 gene CYP3A4, binding to the response element of the CYP3A4 promoter as a heterodimer with the 9-cis retinoic acid receptor RXR. It is activated by a range of compounds that induce CYP3A4, including dexamethasone and rifampicin. Several alternatively spliced transcripts encoding different isoforms, some of which use non-AUG (CUG) translation initiation codon, have been described for this gene. Additional transcript variants exist, however, they have not been fully characterized. [provided by RefSeq, Jul 2008]

NR1I2 Gene-Disease associations (from GenCC):

• pediatric lymphoma

  Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics

ENSG00000285585 (HGNC:):

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.985

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NR1I2	NM_003889.4	c.193T>A	p.Phe65Ile	missense_variant	Exon 2 of 9	ENST00000393716.8	NP_003880.3
NR1I2	NM_022002.3	c.310T>A	p.Phe104Ile	missense_variant	Exon 2 of 9		NP_071285.1
NR1I2	NM_033013.3	c.193T>A	p.Phe65Ile	missense_variant	Exon 2 of 9		NP_148934.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NR1I2	ENST00000393716.8	c.193T>A	p.Phe65Ile	missense_variant	Exon 2 of 9	1	NM_003889.4	ENSP00000377319.3
ENSG00000285585	ENST00000648112.1	c.*216T>A		3_prime_UTR_variant	Exon 18 of 18			ENSP00000497876.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Jul 22, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.193T>A (p.F65I) alteration is located in exon 2 (coding exon 1) of the NR1I2 gene. This alteration results from a T to A substitution at nucleotide position 193, causing the phenylalanine (F) at amino acid position 65 to be replaced by an isoleucine (I). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.99
BayesDel_addAF	Pathogenic	0.50	D
BayesDel_noAF	Pathogenic	0.49
CADD	Pathogenic	30
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.79	.;.;.;.;D
Eigen	Pathogenic	0.98
Eigen_PC	Pathogenic	0.87
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.96	D;D;D;D;D
M_CAP	Pathogenic	0.41	D
MetaRNN	Pathogenic	0.98	D;D;D;D;D
MetaSVM	Pathogenic	1.0	D
MutationAssessor	Pathogenic	4.0	.;.;.;H;H
PhyloP100		7.6
PrimateAI	Uncertain	0.77	T
PROVEAN	Pathogenic	-4.9	D;D;D;.;.
REVEL	Pathogenic	0.97
Sift	Uncertain	0.0010	D;D;D;.;.
Sift4G	Pathogenic	0.0	D;D;D;.;.
Vest4		0.87
MutPred		0.93		.;.;Loss of glycosylation at K101 (P = 0.0296);.;.;
MVP		0.95
MPC		0.53
ClinPred		1.0	D
GERP RS		5.3
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.37
gMVP		0.95
Mutation Taster		=12/88	disease causing

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

Other links and lift over

hg19: chr3-119526290;