rs2298526

Positions:

• chr11-112981742-T-C
• chr11-112981742-T-G

Variant summary

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

The NM_181351.5(NCAM1):​c.52+20078T>C variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.458 in 151,624 control chromosomes in the GnomAD database, including 16,769 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 0.46 (16769 hom., cov: 32)
• Consequence: NCAM1 NM_181351.5 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.169

Genes affected

NCAM1 (HGNC:7656): (neural cell adhesion molecule 1) This gene encodes a cell adhesion protein which is a member of the immunoglobulin superfamily. The encoded protein is involved in cell-to-cell interactions as well as cell-matrix interactions during development and differentiation. The encoded protein plays a role in the development of the nervous system by regulating neurogenesis, neurite outgrowth, and cell migration. This protein is also involved in the expansion of T lymphocytes, B lymphocytes and natural killer (NK) cells which play an important role in immune surveillance. This protein plays a role in signal transduction by interacting with fibroblast growth factor receptors, N-cadherin and other components of the extracellular matrix and by triggering signalling cascades involving FYN-focal adhesion kinase (FAK), mitogen-activated protein kinase (MAPK), and phosphatidylinositol 3-kinase (PI3K). One prominent isoform of this gene, cell surface molecule CD56, plays a role in several myeloproliferative disorders such as acute myeloid leukemia and differential expression of this gene is associated with differential disease progression. For example, increased expression of CD56 is correlated with lower survival in acute myeloid leukemia patients whereas increased severity of COVID-19 is correlated with decreased abundance of CD56-expressing NK cells in peripheral blood. Alternative splicing results in multiple transcript variants encoding distinct protein isoforms. [provided by RefSeq, Aug 2020]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.92).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.78 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
NCAM1	NM_181351.5	c.52+20078T>C		intron_variant		ENST00000316851.12

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
NCAM1	ENST00000316851.12	c.52+20078T>C		intron_variant		5	NM_181351.5	P3

Frequencies

GnomAD3 genomes AF: 0.458 AC: 69423 AN: 151506 Hom.: 16739 Cov.: 32

Gnomad AFR AF: 0.420

Gnomad AMI AF: 0.312

Gnomad AMR AF: 0.507

Gnomad ASJ AF: 0.414

Gnomad EAS AF: 0.800

Gnomad SAS AF: 0.586

Gnomad FIN AF: 0.672

Gnomad MID AF: 0.354

Gnomad NFE AF: 0.408

Gnomad OTH AF: 0.439

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

GnomAD4 genome AF: 0.458 AC: 69498 AN: 151624 Hom.: 16769 Cov.: 32 AF XY: 0.476 AC XY: 35287 AN XY: 74122

Gnomad4 AFR AF: 0.420

Gnomad4 AMR AF: 0.507

Gnomad4 ASJ AF: 0.414

Gnomad4 EAS AF: 0.801

Gnomad4 SAS AF: 0.586

Gnomad4 FIN AF: 0.672

Gnomad4 NFE AF: 0.408

Gnomad4 OTH AF: 0.442

Alfa AF: 0.449 Hom.: 2007

Bravo AF: 0.442

Asia WGS AF: 0.633 AC: 2200 AN: 3476

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.92
CADD	Benign	0.92
DANN	Benign	0.47

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: rs2298526; hg19: chr11-112852464;