Genetic Variant NM_004386.3:c.254C>T (chr19-19219095-C-T) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_004386.3(NCAN):c.254C>T(p.Ser85Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000103 in 1,460,032 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: 31)

Exomes 𝑓: 0.000010 ( 0 hom. )

Consequence

NCAN
NM_004386.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.13

Variant links:

Genes affected

NCAN (HGNC:2465): (neurocan) Neurocan is a chondroitin sulfate proteoglycan thought to be involved in the modulation of cell adhesion and migration.[supplied by OMIM, Jul 2002]

NCAN links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.27741832).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
NCAN	NM_004386.3 link	c.254C>T	p.Ser85Leu	missense_variant	Exon 3 of 15	ENST00000252575.11	NP_004377.2	O14594A0A024R7M3Q4LE67

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
NCAN	ENST00000252575.11 link	c.254C>T	p.Ser85Leu	missense_variant	Exon 3 of 15	1	NM_004386.3	ENSP00000252575.4		O14594

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000201

AC:

AN:

249276

Hom.:

AF XY:

0.0000371

AC XY:

AN XY:

134790

show subpopulations

Gnomad AFR exome

AF:

0.0000617

Gnomad AMR exome

AF:

0.0000291

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000659

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000888

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000103

AC:

AN:

1460032

Hom.:

Cov.:

AF XY:

0.0000110

AC XY:

AN XY:

726118

show subpopulations

Gnomad4 AFR exome

AF:

0.0000598

Gnomad4 AMR exome

AF:

0.0000224

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000930

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000270

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000773

Hom.:

Bravo

AF:

0.0000302

ExAC

AF:

0.0000330

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Feb 07, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.254C>T (p.S85L) alteration is located in exon 3 (coding exon 2) of the NCAN gene. This alteration results from a C to T substitution at nucleotide position 254, causing the serine (S) at amino acid position 85 to be replaced by a leucine (L). 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

0.18

BayesDel_addAF

Benign

-0.16

BayesDel_noAF

Benign

-0.29

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.58

Eigen

Uncertain

0.21

Eigen_PC

Benign

0.12

FATHMM_MKL

Benign

0.36

LIST_S2

Uncertain

0.88

M_CAP

Uncertain

0.12

MetaRNN

Benign

0.28

MetaSVM

Benign

-0.49

MutationAssessor

Benign

1.2

PrimateAI

Benign

0.45

PROVEAN

Uncertain

-3.4

REVEL

Benign

0.17

Sift

Benign

0.031

Sift4G

Benign

0.11

Polyphen

1.0

Vest4

0.36

MVP

0.61

MPC

1.1

ClinPred

0.72

GERP RS

4.5

Varity_R

0.18

gMVP

0.46

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.010

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over