chr11-99956994-A-C

Position:

• chr11-99956994-A-C

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_014361.4(CNTN5):​c.862A>C​(p.Thr288Pro) variant causes a missense change. The variant allele was found at a frequency of 0.00000547 in 1,461,346 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000055 (0 hom.)
• Consequence: CNTN5 NM_014361.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.94

Genes affected

CNTN5 (HGNC:2175): (contactin 5) The protein encoded by this gene is a member of the immunoglobulin superfamily, and contactin family, which mediate cell surface interactions during nervous system development. This protein 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. Alternatively spliced transcript variants encoding different isoforms have been described for this gene. [provided by RefSeq, Aug 2011]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

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

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CNTN5	NM_014361.4	c.862A>C	p.Thr288Pro	missense_variant	8/25	ENST00000524871.6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CNTN5	ENST00000524871.6	c.862A>C	p.Thr288Pro	missense_variant	8/25	1	NM_014361.4	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000547 AC: 8 AN: 1461346 Hom.: 0 Cov.: 31 AF XY: 0.00000550 AC XY: 4 AN XY: 726932

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00000720

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

Bravo AF: 0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Mar 31, 2024

The c.862A>C (p.T288P) alteration is located in exon 1 (coding exon 1) of the CNTN5 gene. This alteration results from a A to C substitution at nucleotide position 862, causing the threonine (T) at amino acid position 288 to be replaced by a proline (P). 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	Pathogenic	0.71
BayesDel_addAF	Uncertain	0.14	D
BayesDel_noAF	Uncertain	-0.040
CADD	Pathogenic	27
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.61	.;D;D;.;T;.
Eigen	Uncertain	0.51
Eigen_PC	Uncertain	0.47
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Uncertain	0.87	D;.;D;D;D;D
M_CAP	Benign	0.036	D
MetaRNN	Uncertain	0.53	D;D;D;D;D;D
MetaSVM	Benign	-0.42	T
MutationAssessor	Uncertain	2.3	M;M;M;.;.;.
MutationTaster	Benign	1.0	D;D;D;D;D
PrimateAI	Uncertain	0.72	T
PROVEAN	Benign	-2.2	N;N;N;N;.;.
REVEL	Benign	0.24
Sift	Uncertain	0.018	D;D;D;D;.;.
Sift4G	Uncertain	0.0030	D;D;D;D;D;D
Polyphen		1.0, 1.0	.;D;D;D;.;.
Vest4		0.66
MutPred		0.37		Loss of phosphorylation at T288 (P = 0.0262);Loss of phosphorylation at T288 (P = 0.0262);Loss of phosphorylation at T288 (P = 0.0262);.;.;.;
MVP		0.79
MPC		0.29
ClinPred		0.97	D
GERP RS		5.5
Varity_R		0.66
gMVP		0.73

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

Other links and lift over

dbSNP: rs1950820453; hg19: chr11-99827726;