chr17-42682839-C-T

Position:

chr17-42682839-C-T

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 3P and 2B. PM2PP2BP4_Moderate

The NM_003632.3(CNTNAP1):c.10C>T(p.Leu4Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000379 in 1,584,602 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 31)

Exomes 𝑓: 0.0000035 ( 0 hom. )

Consequence

CNTNAP1
NM_003632.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 1.74

Variant links:

Genes affected

CNTNAP1 (HGNC:8011): (contactin associated protein 1) The gene product was initially identified as a 190-kD protein associated with the contactin-PTPRZ1 complex. The 1,384-amino acid protein, also designated p190 or CASPR for 'contactin-associated protein,' includes an extracellular domain with several putative protein-protein interaction domains, a putative transmembrane domain, and a 74-amino acid cytoplasmic domain. Northern blot analysis showed that the gene is transcribed predominantly in brain as a transcript of 6.2 kb, with weak expression in several other tissues tested. The architecture of its extracellular domain is similar to that of neurexins, and this protein may be the signaling subunit of contactin, enabling recruitment and activation of intracellular signaling pathways in neurons. [provided by RefSeq, Jan 2009]

CNTNAP1 links:

CCR10 (HGNC:4474): (C-C motif chemokine receptor 10) Chemokines are a group of small (approximately 8 to 14 kD), mostly basic, structurally related molecules that regulate cell trafficking of various types of leukocytes through interactions with a subset of 7-transmembrane, G protein-coupled receptors. Chemokines also play fundamental roles in the development, homeostasis, and function of the immune system, and they have effects on cells of the central nervous system as well as on endothelial cells involved in angiogenesis or angiostasis. Chemokines are divided into 2 major subfamilies, CXC and CC, based on the arrangement of the first 2 of the 4 conserved cysteine residues; the 2 cysteines are separated by a single amino acid in CXC chemokines and are adjacent in CC chemokines. CCR10 is the receptor for CCL27 (SCYA27; MIM 604833); CCR10-CCL27 interactions are involved in T cell-mediated skin inflammation (Homey et al., 2002 [PubMed 11821900]).[supplied by OMIM, Mar 2008]

CCR10 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;

PP2

Missense variant in gene, where missense usually causes diseases (based on misZ statistic), CNTNAP1. . Gene score misZ 3.2225 (greater than the threshold 3.09). Trascript score misZ 3.8309 (greater than threshold 3.09). GenCC has associacion of gene with lethal congenital contracture syndrome 7, hypomyelination neuropathy-arthrogryposis syndrome.

BP4

Computational evidence support a benign effect (MetaRNN=0.21454802).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CNTNAP1	NM_003632.3 linkuse as main transcript	c.10C>T	p.Leu4Phe	missense_variant	1/24	ENST00000264638.9	NP_003623.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris
CNTNAP1	ENST00000264638.9 linkuse as main transcript	c.10C>T	p.Leu4Phe	missense_variant	1/24	1	NM_003632.3	ENSP00000264638	P1
CNTNAP1	ENST00000591662.1 linkuse as main transcript	c.10C>T	p.Leu4Phe	missense_variant, NMD_transcript_variant	1/24	1		ENSP00000466571
CCR10	ENST00000591765.1 linkuse as main transcript	c.-1161G>A		5_prime_UTR_variant	1/2	3		ENSP00000468135
CCR10	ENST00000591568.1 linkuse as main transcript	c.-643+977G>A		intron_variant		3		ENSP00000467331

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152186

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00000349

AC:

AN:

1432416

Hom.:

Cov.:

AF XY:

0.00000141

AC XY:

AN XY:

710232

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.0000390

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000273

Gnomad4 OTH exome

AF:

0.0000169

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152186

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74360

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 23, 2023

The c.10C>T (p.L4F) alteration is located in exon 1 (coding exon 1) of the CNTNAP1 gene. This alteration results from a C to T substitution at nucleotide position 10, causing the leucine (L) at amino acid position 4 to be replaced by a phenylalanine (F). 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

0.070

BayesDel_addAF

Uncertain

0.014

BayesDel_noAF

Benign

-0.22

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.10

Eigen

Benign

-0.076

Eigen_PC

Benign

0.034

FATHMM_MKL

Benign

0.61

LIST_S2

Benign

0.46

M_CAP

Benign

0.057

MetaRNN

Benign

0.21

MetaSVM

Benign

-0.43

MutationAssessor

Benign

0.0

MutationTaster

Benign

1.0

N;D

PrimateAI

Benign

0.42

PROVEAN

Benign

-1.1

REVEL

Uncertain

0.32

Sift

Uncertain

0.015

Sift4G

Benign

0.15

Polyphen

0.61

Vest4

0.23

MutPred

0.60

Loss of sheet (P = 0.0315);

MVP

0.90

MPC

1.1

ClinPred

0.26

GERP RS

3.7

Varity_R

0.14

gMVP

0.43

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

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