chr14-78403131-C-T

Position:

• chr14-78403131-C-T

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_001330195.2(NRXN3):​c.757+105271C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.551 in 152,054 control chromosomes in the GnomAD database, including 23,381 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.55 (23381 hom., cov: 32)
• Consequence: NRXN3 NM_001330195.2 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.0120

Genes affected

NRXN3 (HGNC:8010): (neurexin 3) This gene encodes a member of a family of proteins that function in the nervous system as receptors and cell adhesion molecules. Extensive alternative splicing and the use of alternative promoters results in multiple transcript variants and protein isoforms for this gene, but the full-length nature of many of these variants has not been determined. Transcripts that initiate from an upstream promoter encode alpha isoforms, which contain epidermal growth factor-like (EGF-like) sequences and laminin G domains. Transcripts initiating from the downstream promoter encode beta isoforms, which lack EGF-like sequences. Genetic variation at this locus has been associated with a range of behavioral phenotypes, including alcohol dependence and autism spectrum disorder. [provided by RefSeq, Dec 2012]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.81).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.614 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NRXN3	NM_001330195.2	c.757+105271C>T		intron_variant		ENST00000335750.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NRXN3	ENST00000335750.7	c.757+105271C>T		intron_variant		5	NM_001330195.2	P1

Frequencies

GnomAD3 genomes AF: 0.551 AC: 83662 AN: 151934 Hom.: 23372 Cov.: 32

Gnomad AFR AF: 0.621

Gnomad AMI AF: 0.570

Gnomad AMR AF: 0.476

Gnomad ASJ AF: 0.612

Gnomad EAS AF: 0.620

Gnomad SAS AF: 0.545

Gnomad FIN AF: 0.477

Gnomad MID AF: 0.633

Gnomad NFE AF: 0.527

Gnomad OTH AF: 0.586

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.551 AC: 83707 AN: 152054 Hom.: 23381 Cov.: 32 AF XY: 0.547 AC XY: 40676 AN XY: 74326

Gnomad4 AFR AF: 0.621

Gnomad4 AMR AF: 0.475

Gnomad4 ASJ AF: 0.612

Gnomad4 EAS AF: 0.620

Gnomad4 SAS AF: 0.543

Gnomad4 FIN AF: 0.477

Gnomad4 NFE AF: 0.527

Gnomad4 OTH AF: 0.584

Alfa AF: 0.539 Hom.: 10541

Bravo AF: 0.558

Asia WGS AF: 0.586 AC: 2039 AN: 3476

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.81
CADD	Benign	1.1
DANN	Benign	0.71

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

LitVar

Other links and lift over

dbSNP: rs917906; hg19: chr14-78869474;