rs775334870

Variant names:

• chr7-26183702-G-A
• rs775334870
• NM_004289.7:c.752G>A

Your query was ambiguous. Multiple possible variants found:

• chr7-26183702-G-A
• chr7-26183702-G-C

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_004289.7(NFE2L3):​c.752G>A​(p.Arg251Lys) variant causes a missense, splice region change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000138 in 1,450,098 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 18/24 in silico tools predict a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R251T) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: NFE2L3 NM_004289.7 missense, splice_region
• Scores: Splicing: ADA: 0.00007336
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.255
• Publications: 1 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, MODERATE, LIMITED Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), Ambry Genetics
• oculopharyngeal muscular dystrophy 2

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

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

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.047258615).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004289.7. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NFE2L3	NM_004289.7	MANE Select	c.752G>A	p.Arg251Lys	missense splice_region	Exon 3 of 4	NP_004280.5

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NFE2L3	ENST00000056233.4	TSL:1 MANE Select	c.752G>A	p.Arg251Lys	missense splice_region	Exon 3 of 4	ENSP00000056233.3	Q9Y4A8
	NFE2L3	ENST00000927668.1		c.752G>A	p.Arg251Lys	missense splice_region	Exon 3 of 4	ENSP00000597727.1
	NFE2L3	ENST00000927666.1		c.749G>A	p.Arg250Lys	missense splice_region	Exon 3 of 4	ENSP00000597725.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000398 AC: 1 AN: 251120 AF XY: 0.00000737

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000290

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000138 AC: 2 AN: 1450098 Hom.: 0 Cov.: 27 AF XY: 0.00000138 AC XY: 1 AN XY: 722308

African (AFR) AF: 0.00 AC: 0 AN: 33236

American (AMR) AF: 0.0000448 AC: 2 AN: 44680

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26068

East Asian (EAS) AF: 0.00 AC: 0 AN: 39628

South Asian (SAS) AF: 0.00 AC: 0 AN: 86014

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53400

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5752

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1101368

Other (OTH) AF: 0.00 AC: 0 AN: 59952

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.092
BayesDel_addAF	Benign	-0.30	T
BayesDel_noAF	Benign	-0.59
CADD	Benign	4.2
DANN	Benign	0.59
DEOGEN2	Benign	0.067	T
Eigen	Benign	-0.64
Eigen_PC	Benign	-0.60
FATHMM_MKL	Benign	0.0034	N
LIST_S2	Benign	0.46	T
M_CAP	Benign	0.0060	T
MetaRNN	Benign	0.047	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.9	L
PhyloP100		0.26
PrimateAI	Benign	0.25	T
PROVEAN	Benign	-0.20	N
REVEL	Benign	0.040
Sift	Benign	1.0	T
Sift4G	Benign	0.90	T
Polyphen		0.26	B
Vest4		0.30
MutPred		0.19		Gain of ubiquitination at R251 (P = 6e-04)
MVP		0.29
MPC		0.0011
ClinPred		0.12	T
GERP RS		0.33
Varity_R		0.046
gMVP		0.19
Mutation Taster		=91/9	polymorphism

Splicing

Name	Calibrated prediction	Score	Prediction
dbscSNV1_ADA	Benign	0.000073
dbscSNV1_RF	Benign	0.0040
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

dbSNP: rs775334870; hg19: chr7-26223322;