7-108160459-T-C

Variant names:

• chr7-108160459-T-C
• rs1247614027
• NM_001037132.4:c.3500A>G

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2 BP4

The NM_001037132.4(NRCAM):​c.3500A>G​(p.Gln1167Arg) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,318 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000014 (0 hom.)
• Consequence: NRCAM NM_001037132.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 8.02
• Publications: 0 publications found

Genes affected

NRCAM (HGNC:7994): (neuronal cell adhesion molecule) Cell adhesion molecules (CAMs) are members of the immunoglobulin superfamily. This gene encodes a neuronal cell adhesion molecule with multiple immunoglobulin-like C2-type domains and fibronectin type-III domains. This ankyrin-binding protein is involved in neuron-neuron adhesion and promotes directional signaling during axonal cone growth. This gene is also expressed in non-neural tissues and may play a general role in cell-cell communication via signaling from its intracellular domain to the actin cytoskeleton during directional cell migration. Allelic variants of this gene have been associated with autism and addiction vulnerability. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jul 2008]

NRCAM Gene-Disease associations (from GenCC):

• neurodevelopmental disorder with neuromuscular and skeletal abnormalities

  Inheritance: AR Classification: STRONG, MODERATE Submitted by: Labcorp Genetics (formerly Invitae), G2P, Ambry Genetics

ACMG classification

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.37283993).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NRCAM	NM_001037132.4	c.3500A>G	p.Gln1167Arg	missense_variant	Exon 31 of 33	ENST00000379028.8	NP_001032209.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NRCAM	ENST00000379028.8	c.3500A>G	p.Gln1167Arg	missense_variant	Exon 31 of 33	5	NM_001037132.4	ENSP00000368314.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000400 AC: 1 AN: 250280 AF XY: 0.00000739

Gnomad AFR exome AF: 0.0000616

Gnomad AMR exome AF: 0.00

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: 0.00000137 AC: 2 AN: 1461318 Hom.: 0 Cov.: 30 AF XY: 0.00000138 AC XY: 1 AN XY: 726934

African (AFR) AF: 0.0000598 AC: 2 AN: 33462

American (AMR) AF: 0.00 AC: 0 AN: 44656

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26116

East Asian (EAS) AF: 0.00 AC: 0 AN: 39680

South Asian (SAS) AF: 0.00 AC: 0 AN: 86158

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53408

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111692

Other (OTH) AF: 0.00 AC: 0 AN: 60378

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

Inborn genetic diseases Uncertain:1

Jun 16, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.3500A>G (p.Q1167R) alteration is located in exon 28 (coding exon 28) of the NRCAM gene. This alteration results from a A to G substitution at nucleotide position 3500, causing the glutamine (Q) at amino acid position 1167 to be replaced by an arginine (R). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.33
BayesDel_addAF	Pathogenic	0.22	D
BayesDel_noAF	Pathogenic	0.26
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.81	D;.;.;.;.;D
Eigen	Uncertain	0.49
Eigen_PC	Uncertain	0.55
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.92	D;D;D;D;D;.
M_CAP	Benign	0.044	D
MetaRNN	Benign	0.37	T;T;T;T;T;T
MetaSVM	Benign	-0.38	T
MutationAssessor	Uncertain	2.6	M;.;.;.;.;M
PhyloP100		8.0
PrimateAI	Pathogenic	0.82	D
PROVEAN	Uncertain	-3.2	D;.;D;D;.;D
REVEL	Uncertain	0.56
Sift	Uncertain	0.0040	D;.;T;D;.;D
Sift4G	Uncertain	0.0020	D;T;T;T;D;D
Polyphen		0.95	P;.;D;.;.;P
Vest4		0.52
MutPred		0.61		Loss of sheet (P = 0.0315);.;.;.;.;Loss of sheet (P = 0.0315);
MVP		0.82
MPC		0.91
ClinPred		0.94	D
GERP RS		5.5
Varity_R		0.57
gMVP		0.88
Mutation Taster		=40/60	disease causing

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: rs1247614027; hg19: chr7-107800904;