7-147529799-G-A

Variant names:

• chr7-147529799-G-A
• rs6464816
• NM_014141.6:c.1778-32339G>A

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_014141.6(CNTNAP2):​c.1778-32339G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.153 in 152,004 control chromosomes in the GnomAD database, including 2,048 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.15 (2048 hom., cov: 33)
• Consequence: CNTNAP2 NM_014141.6 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.479
• Publications: 6 publications found

Genes affected

CNTNAP2 (HGNC:13830): (contactin associated protein 2) This gene encodes a member of the neurexin family which functions 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, thrombospondin N-terminal-like domains and a putative PDZ binding site. This protein is localized at the juxtaparanodes of myelinated axons, and mediates interactions between neurons and glia during nervous system development and is also involved in localization of potassium channels within differentiating axons. This gene encompasses almost 1.5% of chromosome 7 and is one of the largest genes in the human genome. It is directly bound and regulated by forkhead box protein P2, a transcription factor related to speech and language development. This gene has been implicated in multiple neurodevelopmental disorders, including Gilles de la Tourette syndrome, schizophrenia, epilepsy, autism, ADHD and intellectual disability. [provided by RefSeq, Jul 2017]

CNTNAP2 Gene-Disease associations (from GenCC):

• complex neurodevelopmental disorder

  Inheritance: AR, AD Classification: DEFINITIVE, NO_KNOWN Submitted by: ClinGen
• cortical dysplasia-focal epilepsy syndrome

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

ACMG classification

Our verdict: Benign. The variant received -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.86).
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.308 is higher than 0.05.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_014141.6. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CNTNAP2	NM_014141.6	MANE Select	c.1778-32339G>A		intron	N/A	NP_054860.1	A0A090N7T7

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CNTNAP2	ENST00000361727.8	TSL:1 MANE Select	c.1778-32339G>A		intron	N/A	ENSP00000354778.3	Q9UHC6-1
	CNTNAP2	ENST00000636870.1	TSL:5	n.1640-32339G>A		intron	N/A
	CNTNAP2	ENST00000637825.1	TSL:5	n.1261-32339G>A		intron	N/A

Frequencies

GnomAD3 genomes AF: 0.154 AC: 23317 AN: 151884 Hom.: 2045 Cov.: 33

Gnomad AFR AF: 0.0901

Gnomad AMI AF: 0.0868

Gnomad AMR AF: 0.197

Gnomad ASJ AF: 0.105

Gnomad EAS AF: 0.321

Gnomad SAS AF: 0.176

Gnomad FIN AF: 0.183

Gnomad MID AF: 0.188

Gnomad NFE AF: 0.166

Gnomad OTH AF: 0.169

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.153 AC: 23326 AN: 152004 Hom.: 2048 Cov.: 33 AF XY: 0.157 AC XY: 11671 AN XY: 74324

African (AFR) AF: 0.0900 AC: 3731 AN: 41464

American (AMR) AF: 0.198 AC: 3018 AN: 15260

Ashkenazi Jewish (ASJ) AF: 0.105 AC: 364 AN: 3470

East Asian (EAS) AF: 0.321 AC: 1653 AN: 5152

South Asian (SAS) AF: 0.176 AC: 846 AN: 4816

European-Finnish (FIN) AF: 0.183 AC: 1930 AN: 10566

Middle Eastern (MID) AF: 0.180 AC: 53 AN: 294

European-Non Finnish (NFE) AF: 0.166 AC: 11297 AN: 67960

Other (OTH) AF: 0.168 AC: 355 AN: 2112

Alfa AF: 0.163 Hom.: 9246

Bravo AF: 0.153

Asia WGS AF: 0.227 AC: 791 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.86
CADD	Benign	6.6
DANN	Benign	0.66
PhyloP100		0.48
Mutation Taster		=100/0	polymorphism (auto)

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: rs6464816; hg19: chr7-147226891;