chr7-26185525-T-G

Variant names:

• chr7-26185525-T-G
• NM_004289.7:c.1827T>G

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_004289.7(NFE2L3):​c.1827T>G​(p.Asp609Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,461,268 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000027 (0 hom.)
• Consequence: NFE2L3 NM_004289.7 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.435
• Publications: 0 publications found

Genes affected

NFE2L3 (HGNC:7783): (NFE2 like bZIP transcription factor 3) This gene encodes a member of the cap 'n' collar basic-region leucine zipper family of transcription factors. The encoded protein heterodimerizes with small musculoaponeurotic fibrosarcoma factors to bind antioxidant response elements in target genes. This protein is a membrane bound glycoprotein that is targeted to the endoplasmic reticulum and the nuclear envelope. Pseudogenes of this gene are found on chromosomes 16, 17, and 18. [provided by RefSeq, Mar 2009]

HNRNPA2B1 (HGNC:5033): (heterogeneous nuclear ribonucleoprotein A2/B1) This gene belongs to the A/B subfamily of ubiquitously expressed heterogeneous nuclear ribonucleoproteins (hnRNPs). The hnRNPs are RNA binding proteins and they complex with heterogeneous nuclear RNA (hnRNA). These proteins are associated with pre-mRNAs in the nucleus and appear to influence pre-mRNA processing and other aspects of mRNA metabolism and transport. While all of the hnRNPs are present in the nucleus, some seem to shuttle between the nucleus and the cytoplasm. The hnRNP proteins have distinct nucleic acid binding properties. The protein encoded by this gene has two repeats of quasi-RRM domains that bind to RNAs. This gene has been described to generate two alternatively spliced transcript variants which encode different isoforms. [provided by RefSeq, Jul 2008]

HNRNPA2B1 Gene-Disease associations (from GenCC):

• inclusion body myopathy with early-onset Paget disease with or without frontotemporal dementia 2

  Inheritance: AD Classification: STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
• oculopharyngeal muscular dystrophy 2

  Inheritance: AD Classification: STRONG Submitted by: G2P
• amyotrophic lateral sclerosis

  Inheritance: AD Classification: MODERATE, LIMITED Submitted by: Genomics England PanelApp, ClinGen
• inclusion body myopathy with Paget disease of bone and frontotemporal dementia

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.14816949).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NFE2L3	NM_004289.7	c.1827T>G	p.Asp609Glu	missense_variant	Exon 4 of 4	ENST00000056233.4	NP_004280.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NFE2L3	ENST00000056233.4	c.1827T>G	p.Asp609Glu	missense_variant	Exon 4 of 4	1	NM_004289.7	ENSP00000056233.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000274 AC: 4 AN: 1461268 Hom.: 0 Cov.: 33 AF XY: 0.00000138 AC XY: 1 AN XY: 726948

African (AFR) AF: 0.00 AC: 0 AN: 33456

American (AMR) AF: 0.00 AC: 0 AN: 44694

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26128

East Asian (EAS) AF: 0.00 AC: 0 AN: 39692

South Asian (SAS) AF: 0.00 AC: 0 AN: 86232

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53416

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5762

European-Non Finnish (NFE) AF: 0.00000360 AC: 4 AN: 1111526

Other (OTH) AF: 0.00 AC: 0 AN: 60362

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Dec 02, 2022

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.1827T>G (p.D609E) alteration is located in exon 4 (coding exon 4) of the NFE2L3 gene. This alteration results from a T to G substitution at nucleotide position 1827, causing the aspartic acid (D) at amino acid position 609 to be replaced by a glutamic acid (E). 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	Benign	0.21
BayesDel_addAF	Benign	-0.068	T
BayesDel_noAF	Benign	-0.34
CADD	Benign	7.6
DANN	Uncertain	0.98
DEOGEN2	Uncertain	0.58	D
Eigen	Benign	-0.88
Eigen_PC	Benign	-0.82
FATHMM_MKL	Benign	0.0028	N
LIST_S2	Benign	0.59	T
M_CAP	Benign	0.055	D
MetaRNN	Benign	0.15	T
MetaSVM	Benign	-0.62	T
MutationAssessor	Benign	0.28	N
PhyloP100		-0.43
PrimateAI	Benign	0.40	T
PROVEAN	Uncertain	-2.4	N
REVEL	Benign	0.25
Sift	Benign	0.13	T
Sift4G	Benign	0.33	T
Polyphen		0.36	B
Vest4		0.15
MutPred		0.32		Gain of disorder (P = 0.2202);
MVP		0.68
MPC		0.0016
ClinPred		0.46	T
GERP RS		-2.1
Varity_R		0.15
gMVP		0.40
Mutation Taster		=66/34	polymorphism

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: chr7-26225145;