rs150167601

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_003632.3(CNTNAP1):​c.3341A>C​(p.Asp1114Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000686 in 1,458,664 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. D1114G) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)
Exomes 𝑓: 6.9e-7 ( 0 hom. )

Consequence

CNTNAP1
NM_003632.3 missense

Scores

2
17

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 3.19

Publications

0 publications found
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 Gene-Disease associations (from GenCC):
  • lethal congenital contracture syndrome 7
    Inheritance: AR Classification: STRONG Submitted by: G2P, Labcorp Genetics (formerly Invitae)
  • hypomyelination neuropathy-arthrogryposis syndrome
    Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
BP4
Computational evidence support a benign effect (MetaRNN=0.22758403).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
CNTNAP1NM_003632.3 linkc.3341A>C p.Asp1114Ala missense_variant Exon 19 of 24 ENST00000264638.9 NP_003623.1 P78357

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
CNTNAP1ENST00000264638.9 linkc.3341A>C p.Asp1114Ala missense_variant Exon 19 of 24 1 NM_003632.3 ENSP00000264638.3 P78357
CNTNAP1ENST00000591662.1 linkn.*1102A>C non_coding_transcript_exon_variant Exon 19 of 24 1 ENSP00000466571.1 K7EMM9
CNTNAP1ENST00000591662.1 linkn.*1102A>C 3_prime_UTR_variant Exon 19 of 24 1 ENSP00000466571.1 K7EMM9
ENSG00000267765ENST00000592440.1 linkn.363+3235T>G intron_variant Intron 1 of 1 2

Frequencies

GnomAD3 genomes
Cov.:
32
GnomAD4 exome
AF:
6.86e-7
AC:
1
AN:
1458664
Hom.:
0
Cov.:
31
AF XY:
0.00
AC XY:
0
AN XY:
724998
show subpopulations
⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.
African (AFR)
AF:
0.00
AC:
0
AN:
33424
American (AMR)
AF:
0.00
AC:
0
AN:
44648
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26024
East Asian (EAS)
AF:
0.00
AC:
0
AN:
39606
South Asian (SAS)
AF:
0.00
AC:
0
AN:
86198
European-Finnish (FIN)
AF:
0.00
AC:
0
AN:
53300
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5750
European-Non Finnish (NFE)
AF:
9.01e-7
AC:
1
AN:
1109462
Other (OTH)
AF:
0.00
AC:
0
AN:
60252
⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.275
Heterozygous variant carriers
0
0
1
1
2
2
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
Cov.:
32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.16
BayesDel_addAF
Benign
-0.0063
T
BayesDel_noAF
Benign
-0.25
CADD
Benign
22
DANN
Uncertain
0.98
DEOGEN2
Benign
0.28
T
Eigen
Benign
-0.30
Eigen_PC
Benign
-0.056
FATHMM_MKL
Uncertain
0.95
D
LIST_S2
Benign
0.69
T
M_CAP
Benign
0.031
D
MetaRNN
Benign
0.23
T
MetaSVM
Benign
-0.93
T
MutationAssessor
Benign
0.69
N
PhyloP100
3.2
PrimateAI
Benign
0.45
T
PROVEAN
Benign
-0.99
N
REVEL
Benign
0.20
Sift
Benign
0.31
T
Sift4G
Benign
0.33
T
Polyphen
0.015
B
Vest4
0.29
MutPred
0.60
Loss of stability (P = 0.0427);
MVP
0.72
MPC
0.51
ClinPred
0.38
T
GERP RS
5.5
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.1
Varity_R
0.088
gMVP
0.26

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

Other links and lift over

dbSNP: rs150167601; hg19: chr17-40847887; API