chr2-124434561-G-T

Variant names:

• chr2-124434561-G-T
• NM_001367498.1:c.607G>T

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_001367498.1(CNTNAP5):​c.607G>T​(p.Asp203Tyr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (no stars).

• Frequency: Genomes: not found (cov: 33)
• Consequence: CNTNAP5 NM_001367498.1 missense
• Clinical Significance: Uncertain significance no assertion criteria provided U:1
• Conservation: PhyloP100: 9.82
• Publications: 0 publications found

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]

ACMG classification

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.858

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CNTNAP5	NM_001367498.1	c.607G>T	p.Asp203Tyr	missense_variant	Exon 5 of 24	ENST00000682447.1	NP_001354427.1
CNTNAP5	NM_130773.4	c.607G>T	p.Asp203Tyr	missense_variant	Exon 5 of 24		NP_570129.1
CNTNAP5	XM_017003316.2	c.607G>T	p.Asp203Tyr	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	c.607G>T	p.Asp203Tyr	missense_variant	Exon 5 of 24		NM_001367498.1	ENSP00000508115.1
CNTNAP5	ENST00000431078.1	c.607G>T	p.Asp203Tyr	missense_variant	Exon 5 of 24	1		ENSP00000399013.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 33

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: no assertion criteria provided

Submissions by phenotype

CNTNAP5-related disorder Uncertain:1

Aug 21, 2024

PreventionGenetics, part of Exact Sciences

Significance: Uncertain significance

Review Status: no assertion criteria provided

Collection Method: clinical testing

The CNTNAP5 c.607G>T variant is predicted to result in the amino acid substitution p.Asp203Tyr. To our knowledge, this variant has not been reported in the literature or in a large population database, indicating this variant is rare. At this time, the clinical significance of this variant is uncertain due to the absence of conclusive functional and genetic evidence. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.89
BayesDel_addAF	Pathogenic	0.42	D
BayesDel_noAF	Pathogenic	0.37
CADD	Pathogenic	32
DANN	Uncertain	1.0
DEOGEN2	Benign	0.27	T
Eigen	Pathogenic	0.80
Eigen_PC	Pathogenic	0.81
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.95	D
M_CAP	Uncertain	0.16	D
MetaRNN	Pathogenic	0.86	D
MetaSVM	Uncertain	0.31	D
MutationAssessor	Pathogenic	3.4	M
PhyloP100		9.8
PrimateAI	Uncertain	0.76	T
PROVEAN	Pathogenic	-7.1	D
REVEL	Pathogenic	0.81
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0	D
Polyphen		0.90	P
Vest4		0.95
MutPred		0.55		Gain of methylation at K208 (P = 0.0565);
MVP		0.82
MPC		0.11
ClinPred		1.0	D
GERP RS		5.5
Varity_R		0.94
gMVP		0.81
Mutation Taster		=57/43	polymorphism

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

hg19: chr2-125192138; COSMIC: COSV70484487;