11-64660440-T-C

Variant names:

• chr11-64660440-T-C
• rs138291758
• NM_015080.4:c.2281A>G

Variant summary

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

The NM_015080.4(NRXN2):​c.2281A>G​(p.Met761Val) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. 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. M761L) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: NRXN2 NM_015080.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 5.14
• Publications: 3 publications found

Genes affected

NRXN2 (HGNC:8009): (neurexin 2) This gene encodes a member of the neurexin gene family. The products of these genes function as cell adhesion molecules and receptors in the vertebrate nervous system. These genes utilize two promoters. The majority of transcripts are produced from the upstream promoter and encode alpha-neurexin isoforms while a smaller number of transcripts are produced from the downstream promoter and encode beta-neuresin isoforms. The alpha-neurexins contain epidermal growth factor-like (EGF-like) sequences and laminin G domains, and have been shown to interact with neurexophilins. The beta-neurexins lack EGF-like sequences and contain fewer laminin G domains than alpha-neurexins. Alternative splicing and the use of alternative promoters may generate thousands of transcript variants (PMID: 12036300, PMID: 11944992).[provided by RefSeq, Jun 2010]

NRXN2 Gene-Disease associations (from GenCC):

• autism

  Inheritance: AD Classification: STRONG, LIMITED Submitted by: G2P, Ambry Genetics
• neurodevelopmental disorder

  Inheritance: AR Classification: LIMITED Submitted by: Ambry Genetics

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_015080.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NRXN2	NM_015080.4	MANE Select	c.2281A>G	p.Met761Val	missense	Exon 11 of 23	NP_055895.1
	NRXN2	NM_138732.3		c.2188A>G	p.Met730Val	missense	Exon 10 of 20	NP_620060.1
	NRXN2	NM_001376262.1		c.2281A>G	p.Met761Val	missense	Exon 11 of 23	NP_001363191.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	NRXN2	ENST00000265459.11	TSL:5 MANE Select	c.2281A>G	p.Met761Val	missense	Exon 11 of 23	ENSP00000265459.5
	NRXN2	ENST00000704782.1		c.2281A>G	p.Met761Val	missense	Exon 10 of 22	ENSP00000516031.1
	NRXN2	ENST00000377559.7	TSL:1	c.2188A>G	p.Met730Val	missense	Exon 10 of 20	ENSP00000366782.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.40
BayesDel_addAF	Pathogenic	0.17	D
BayesDel_noAF	Uncertain	0.0
CADD	Pathogenic	26
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.46	T
Eigen	Uncertain	0.59
Eigen_PC	Uncertain	0.55
FATHMM_MKL	Uncertain	0.92	D
LIST_S2	Uncertain	0.86	D
M_CAP	Benign	0.042	D
MetaRNN	Uncertain	0.46	T
MetaSVM	Uncertain	0.21	D
MutationAssessor	Benign	1.7	L
PhyloP100		5.1
PrimateAI	Uncertain	0.60	T
PROVEAN	Uncertain	-2.9	D
REVEL	Pathogenic	0.68
Sift	Benign	0.061	T
Sift4G	Uncertain	0.042	D
Polyphen		0.97	D
Vest4		0.42
MutPred		0.67		Loss of disorder (P = 0.0707)
MVP		0.55
MPC		0.64
ClinPred		0.93	D
GERP RS		4.6
Varity_R		0.24
gMVP		0.66
Mutation Taster		=75/25	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

dbSNP: rs138291758; hg19: chr11-64427912;