NM_001289080.2:c.295C>T

Variant names:

• chr3-1227930-C-T
• rs2094305649
• NM_001289080.2:c.295C>T

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_001289080.2(CNTN6):​c.295C>T​(p.Gln99*) variant causes a stop gained 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. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Variant results in nonsense mediated mRNA decay.

• Frequency: Genomes: not found (cov: 32)
• Consequence: CNTN6 NM_001289080.2 stop_gained
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.33
• Publications: 0 publications found

Genes affected

CNTN6 (HGNC:2176): (contactin 6) The protein encoded by this gene is a member of the immunoglobulin superfamily. It is a glycosylphosphatidylinositol (GPI)-anchored neuronal membrane protein that functions as a cell adhesion molecule. It may play a role in the formation of axon connections in the developing nervous system. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jan 2014]

CNTN6 Gene-Disease associations (from GenCC):

• Tourette syndrome

  Inheritance: Unknown Classification: LIMITED Submitted by: Labcorp Genetics (formerly Invitae)
• complex neurodevelopmental disorder

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001289080.2. 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
	CNTN6	NM_001289080.2	MANE Select	c.295C>T	p.Gln99*	stop_gained	Exon 4 of 23	NP_001276009.1	Q9UQ52
	CNTN6	NM_001349350.2		c.295C>T	p.Gln99*	stop_gained	Exon 6 of 25	NP_001336279.1	Q9UQ52
	CNTN6	NM_001349351.2		c.295C>T	p.Gln99*	stop_gained	Exon 6 of 25	NP_001336280.1	Q9UQ52

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CNTN6	ENST00000446702.7	TSL:1 MANE Select	c.295C>T	p.Gln99*	stop_gained	Exon 4 of 23	ENSP00000407822.2	Q9UQ52
	CNTN6	ENST00000350110.2	TSL:1	c.295C>T	p.Gln99*	stop_gained	Exon 4 of 23	ENSP00000341882.2	Q9UQ52
	CNTN6	ENST00000394261.2	TSL:1	n.*273C>T		non_coding_transcript_exon	Exon 5 of 8	ENSP00000377804.2	F8WDQ0

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.62	D
BayesDel_noAF	Pathogenic	0.66
CADD	Pathogenic	43
DANN	Uncertain	1.0
Eigen	Pathogenic	1.1
Eigen_PC	Pathogenic	0.90
FATHMM_MKL	Pathogenic	0.99	D
PhyloP100		7.3
Vest4		0.92
GERP RS		5.5
Mutation Taster		=102/98	disease causing (fs/PTC)

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: rs2094305649; hg19: chr3-1269614;