dbSNP rs200248561: NRXN1:p.Leu167Leu (chr2-51027773-G-C) – ACMG Classification: Benign (-17 pts)

Variant summary

Our verdict is Benign. The variant received -17 ACMG points: 0P and 17B. BP4_StrongBP6_Very_StrongBP7BS1

The NM_001330078.2(NRXN1):c.501C>G(p.Leu167Leu) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000358 in 1,612,478 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★★).

Frequency

Genomes: 𝑓 0.0014 ( 1 hom., cov: 33)

Exomes 𝑓: 0.00025 ( 1 hom. )

Consequence

NRXN1
NM_001330078.2 synonymous

Scores

Clinical Significance

Benign/Likely benign criteria provided, multiple submitters, no conflicts B:11

Conservation

PhyloP100: 0.717

Publications

1 publications found

Variant links:

Genes affected

NRXN1 (HGNC:8008): (neurexin 1) This gene encodes a single-pass type I membrane protein that belongs to the neurexin family. Neurexins are cell-surface receptors that bind neuroligins to form Ca(2+)-dependent neurexin/neuroligin complexes at synapses in the central nervous system. This complex is required for efficient neurotransmission and is involved in the formation of synaptic contacts. Three members of this gene family have been studied in detail and are estimated to generate over 3,000 variants through the use of two alternative promoters (alpha and beta) and extensive alternative splicing in each family member. Recently, a third promoter (gamma) was identified for this gene in the 3' region. Mutations in this gene are associated with Pitt-Hopkins-like syndrome-2 and may contribute to susceptibility to schizophrenia. [provided by RefSeq, Aug 2016]

NRXN1 Gene-Disease associations (from GenCC):

complex neurodevelopmental disorder
Inheritance: AD Classification: DEFINITIVE Submitted by: ClinGen
chromosome 2p16.3 deletion syndrome
Inheritance: AD Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
Pitt-Hopkins-like syndrome 2
Inheritance: AR Classification: STRONG, MODERATE Submitted by: Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae)
autism
Inheritance: AD Classification: MODERATE Submitted by: G2P
schizophrenia
Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)

NRXN1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -17 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.51).

BP6

Variant 2-51027773-G-C is Benign according to our data. Variant chr2-51027773-G-C is described in ClinVar as Benign/Likely_benign. ClinVar VariationId is 138557.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=0.717 with no splicing effect.

BS1

Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00137 (208/152280) while in subpopulation AFR AF = 0.00416 (173/41572). AF 95% confidence interval is 0.00366. There are 1 homozygotes in GnomAd4. There are 105 alleles in the male GnomAd4 subpopulation. Median coverage is 33. This position passed quality control check.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001330078.2. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
NRXN1	NM_001330078.2	MANE Select	c.501C>G	p.Leu167Leu	synonymous	Exon 2 of 23	NP_001317007.1	Q9ULB1-5
NRXN1	NM_001135659.3		c.501C>G	p.Leu167Leu	synonymous	Exon 2 of 24	NP_001129131.1	Q9ULB1-3
NRXN1	NM_001330093.2		c.501C>G	p.Leu167Leu	synonymous	Exon 2 of 23	NP_001317022.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
NRXN1	ENST00000401669.7	TSL:5 MANE Select	c.501C>G	p.Leu167Leu	synonymous	Exon 2 of 23	ENSP00000385017.2	Q9ULB1-5
NRXN1	ENST00000404971.5	TSL:1	c.501C>G	p.Leu167Leu	synonymous	Exon 2 of 24	ENSP00000385142.1	Q9ULB1-3
NRXN1	ENST00000625672.2	TSL:1	c.501C>G	p.Leu167Leu	synonymous	Exon 1 of 21	ENSP00000485887.1	Q9ULB1-2

Frequencies

GnomAD3 genomes

AF:

0.00135

AC:

205

AN:

152160

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00410

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000916

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.000220

Gnomad OTH

AF:

0.00239

GnomAD2 exomes

AF:

0.000541

AC:

132

AN:

244000

AF XY:

0.000436

show subpopulations

Gnomad AFR exome

AF:

0.00389

Gnomad AMR exome

AF:

0.00132

Gnomad ASJ exome

AF:

0.000101

Gnomad EAS exome

AF:

0.0000564

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000200

Gnomad OTH exome

AF:

0.00101

GnomAD4 exome

AF:

0.000253

AC:

369

AN:

1460198

Hom.:

Cov.:

AF XY:

0.000229

AC XY:

166

AN XY:

726372

show subpopulations

African (AFR)

AF:

0.00413

AC:

138

AN:

33430

American (AMR)

AF:

0.00128

AC:

AN:

44582

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26052

East Asian (EAS)

AF:

0.0000252

AC:

AN:

39644

South Asian (SAS)

AF:

0.0000233

AC:

AN:

86020

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53056

Middle Eastern (MID)

AF:

0.00121

AC:

AN:

5766

European-Non Finnish (NFE)

AF:

0.000107

AC:

119

AN:

1111330

Other (OTH)

AF:

0.000746

AC:

AN:

60318

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.490

Heterozygous variant carriers

110

137

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Exome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00137

AC:

208

AN:

152280

Hom.:

Cov.:

AF XY:

0.00141

AC XY:

105

AN XY:

74440

show subpopulations

African (AFR)

AF:

0.00416

AC:

173

AN:

41572

American (AMR)

AF:

0.000914

AC:

AN:

15310

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5136

South Asian (SAS)

AF:

0.00

AC:

AN:

4826

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00340

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000221

AC:

AN:

68026

Other (OTH)

AF:

0.00237

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.503

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000581

Hom.:

Bravo

AF:

0.00147

EpiCase

AF:

0.000218

EpiControl

AF:

0.000238

ClinVar

ClinVar submissions

Significance:Benign/Likely benign

Revision:criteria provided, multiple submitters, no conflicts

View on ClinVar

Pathogenic

VUS

Benign

Condition

not provided (5)

not specified (3)

Pitt-Hopkins-like syndrome 2 (2)

Inborn genetic diseases (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.51

CADD

Benign

7.2

(source)

DANN

Benign

0.84

PhyloP100

0.72

PromoterAI

0.0058

Neutral

(source)

Mutation Taster

=98/2

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over