Genetic Variant CNTNAP5:p.Arg186Gln (chr2-124434511-G-A) – ACMG Classification: Likely_benign (-4 pts)

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_001367498.1(CNTNAP5):c.557G>A(p.Arg186Gln) variant causes a missense change. The variant allele was found at a frequency of 0.000103 in 1,613,868 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: 𝑓 0.00036 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000077 ( 0 hom. )

Consequence

CNTNAP5
NM_001367498.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.73

Publications

2 publications found

Variant links:

Genes affected

CNTNAP5 (HGNC:18748): (contactin associated protein family member 5) This gene product belongs to the neurexin family, members of which function in the vertebrate nervous system as cell adhesion molecules and receptors. This protein, like other neurexin proteins, contains epidermal growth factor repeats and laminin G domains. In addition, it includes an F5/8 type C domain, discoidin/neuropilin- and fibrinogen-like domains, and thrombospondin N-terminal-like domains. [provided by RefSeq, Jul 2008]

CNTNAP5 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.061420858).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CNTNAP5	NM_001367498.1 link	c.557G>A	p.Arg186Gln	missense_variant	Exon 5 of 24	ENST00000682447.1	NP_001354427.1
CNTNAP5	NM_130773.4 link	c.557G>A	p.Arg186Gln	missense_variant	Exon 5 of 24		NP_570129.1	Q8WYK1
CNTNAP5	XM_017003316.2 link	c.557G>A	p.Arg186Gln	missense_variant	Exon 5 of 23		XP_016858805.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CNTNAP5	ENST00000682447.1 link	c.557G>A	p.Arg186Gln	missense_variant	Exon 5 of 24		NM_001367498.1	ENSP00000508115.1		A0A804HKY0
CNTNAP5	ENST00000431078.1 link	c.557G>A	p.Arg186Gln	missense_variant	Exon 5 of 24	1		ENSP00000399013.1		Q8WYK1

Frequencies

GnomAD3 genomes

AF:

0.000361

AC:

AN:

152190

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00118

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.0000942

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000803

AC:

AN:

249034

AF XY:

0.0000814

show subpopulations

Gnomad AFR exome

AF:

0.00110

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:

0.0000266

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000766

AC:

112

AN:

1461560

Hom.:

Cov.:

AF XY:

0.0000660

AC XY:

AN XY:

727080

show subpopulations

African (AFR)

AF:

0.00140

AC:

AN:

33466

American (AMR)

AF:

0.0000447

AC:

AN:

44718

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26136

East Asian (EAS)

AF:

0.00

AC:

AN:

39696

South Asian (SAS)

AF:

0.0000464

AC:

AN:

86252

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53402

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5768

European-Non Finnish (NFE)

AF:

0.0000432

AC:

AN:

1111754

Other (OTH)

AF:

0.000182

AC:

AN:

60368

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.467

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.000361

AC:

AN:

152308

Hom.:

Cov.:

AF XY:

0.000336

AC XY:

AN XY:

74466

show subpopulations

African (AFR)

AF:

0.00118

AC:

AN:

41574

American (AMR)

AF:

0.00

AC:

AN:

15296

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5180

South Asian (SAS)

AF:

0.000207

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.0000942

AC:

AN:

10616

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.0000588

AC:

AN:

68020

Other (OTH)

AF:

0.00

AC:

AN:

2112

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.504

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.000235

Hom.:

Bravo

AF:

0.000453

ESP6500AA

AF:

0.00180

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000910

AC:

EpiCase

AF:

0.0000546

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

Jan 19, 2025

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.557G>A (p.R186Q) alteration is located in exon 5 (coding exon 5) of the CNTNAP5 gene. This alteration results from a G to A substitution at nucleotide position 557, causing the arginine (R) at amino acid position 186 to be replaced by a glutamine (Q). 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

0.090

BayesDel_addAF

Benign

-0.069

BayesDel_noAF

Uncertain

0.080

CADD

Uncertain

(source)

DANN

Benign

0.95

DEOGEN2

Benign

0.013

Eigen

Benign

-0.41

Eigen_PC

Benign

-0.19

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Benign

0.80

M_CAP

Benign

0.016

MetaRNN

Benign

0.061

MetaSVM

Benign

-0.85

MutationAssessor

Benign

1.1

PhyloP100

6.7

PrimateAI

Uncertain

0.74

PROVEAN

Benign

-0.65

REVEL

Uncertain

0.42

Sift

Benign

0.76

Sift4G

Benign

0.51

Polyphen

0.033

Vest4

0.63

MVP

0.51

MPC

0.10

ClinPred

0.094

GERP RS

4.6

Varity_R

0.12

gMVP

0.46

Mutation Taster

=78/22

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.030

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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chr2-124434511-G-A

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over