chr18-52340789-T-C

Position:

• chr18-52340789-T-C

Variant summary

Our verdict is Pathogenic. Variant got 12 ACMG points: 12P and 0B. PVS1 PM2 PP5_Moderate

The NM_005215.4(DCC):​c.2T>C​(p.Met1?) variant causes a start lost change. 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 Likely pathogenic (★).

• Frequency: Genomes: not found (cov: 32)
• Consequence: DCC NM_005215.4 start_lost
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 4.88

Genes affected

DCC (HGNC:2701): (DCC netrin 1 receptor) This gene encodes a netrin 1 receptor. The transmembrane protein is a member of the immunoglobulin superfamily of cell adhesion molecules, and mediates axon guidance of neuronal growth cones towards sources of netrin 1 ligand. The cytoplasmic tail interacts with the tyrosine kinases Src and focal adhesion kinase (FAK, also known as PTK2) to mediate axon attraction. The protein partially localizes to lipid rafts, and induces apoptosis in the absence of ligand. The protein functions as a tumor suppressor, and is frequently mutated or downregulated in colorectal cancer and esophageal carcinoma. [provided by RefSeq, Oct 2009]

ACMG classification

Verdict is Pathogenic. Variant got 12 ACMG points.

• PVS1: Start lost variant, no new inframe start found.
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 18-52340789-T-C is Pathogenic according to our data. Variant chr18-52340789-T-C is described in ClinVar as [Likely_pathogenic]. Clinvar id is 1077125.Status of the report is criteria_provided_single_submitter, 1 stars. Variant chr18-52340789-T-C is described in Lovd as [Pathogenic].

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DCC	NM_005215.4	c.2T>C	p.Met1?	start_lost	1/29	ENST00000442544.7	NP_005206.2
DCC	XM_017025568.2	c.2T>C	p.Met1?	start_lost	1/29		XP_016881057.1
DCC	XM_017025569.2	c.2T>C	p.Met1?	start_lost	1/29		XP_016881058.1
DCC	XM_047437311.1	c.2T>C	p.Met1?	start_lost	1/29		XP_047293267.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DCC	ENST00000442544.7	c.2T>C	p.Met1?	start_lost	1/29	1	NM_005215.4	ENSP00000389140.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 30

GnomAD4 genome Cov.: 32

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:1

Revision: criteria provided, single submitter

Submissions by phenotype

Partial agenesis of the corpus callosum Pathogenic:1

Likely pathogenic, criteria provided, single submitter

clinical testing

Genetics Institute, Tel Aviv Sourasky Medical Center

May 12, 2021

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Pathogenic	0.63	D
BayesDel_noAF	Uncertain	0.040
CADD	Uncertain	24
DANN	Uncertain	0.98
DEOGEN2	Benign	0.15	T
Eigen	Uncertain	0.45
Eigen_PC	Uncertain	0.52
FATHMM_MKL	Uncertain	0.90	D
LIST_S2	Uncertain	0.90	D
M_CAP	Pathogenic	0.39	D
MetaRNN	Pathogenic	0.85	D
MetaSVM	Benign	-0.67	T
MutationTaster	Benign	1.0	D
PROVEAN	Benign	-0.93	N
REVEL	Benign	0.28
Sift	Uncertain	0.0060	D
Sift4G	Pathogenic	0.0	D
Polyphen		0.72	P
Vest4		0.84
MutPred		0.57		Loss of stability (P = 0.0794);
MVP		0.94
ClinPred		0.99	D
GERP RS		5.7
Varity_R		0.62
gMVP		0.64

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr18-49867159;