9-17135233-C-G

Position:

• chr9-17135233-C-G

Variant summary

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

The NM_017738.4(CNTLN):​c.168C>G​(p.Ile56Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 33)
• Consequence: CNTLN NM_017738.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: -0.384

Genes affected

CNTLN (HGNC:23432): (centlein) Enables protein domain specific binding activity; protein kinase binding activity; and protein-macromolecule adaptor activity. Involved in centriole-centriole cohesion and protein localization to organelle. Located in cytosol; microtubule organizing center; and nucleoplasm. [provided by Alliance of Genome Resources, Apr 2022]

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
CNTLN	NM_017738.4	c.168C>G	p.Ile56Met	missense_variant	1/26	ENST00000380647.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CNTLN	ENST00000380647.8	c.168C>G	p.Ile56Met	missense_variant	1/26	1	NM_017738.4	P1
CNTLN	ENST00000380641.4	c.168C>G	p.Ile56Met	missense_variant	1/7	2
CNTLN	ENST00000484374.1	n.252C>G		non_coding_transcript_exon_variant	1/3	2

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 33

Bravo AF: 0.0000151

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

Jan 19, 2024

The c.168C>G (p.I56M) alteration is located in exon 1 (coding exon 1) of the CNTLN gene. This alteration results from a C to G substitution at nucleotide position 168, causing the isoleucine (I) at amino acid position 56 to be replaced by a methionine (M). 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
BayesDel_addAF	Benign	-0.32	T
BayesDel_noAF	Benign	-0.70
CADD	Benign	9.0
DANN	Benign	0.91
Eigen	Benign	-1.1
Eigen_PC	Benign	-1.1
FATHMM_MKL	Benign	0.027	N
LIST_S2	Benign	0.57	T;T
M_CAP	Benign	0.0025	T
MetaRNN	Benign	0.049	T;T
MetaSVM	Benign	-0.96	T
MutationAssessor	Benign	0.0	N;N
MutationTaster	Benign	1.0	N;N;N;N
PrimateAI	Uncertain	0.53	T
PROVEAN	Benign	0.080	N;N
REVEL	Benign	0.0050
Sift	Benign	0.12	T;T
Sift4G	Benign	0.21	T;T
Polyphen		0.044	B;B
Vest4		0.13
MutPred		0.12		Loss of stability (P = 0.0468);Loss of stability (P = 0.0468);
MVP		0.030
ClinPred		0.059	T
GERP RS		-1.6
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
gMVP		0.043

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.39		Details are displayed if max score is > 0.2
DS_DG_spliceai		0.39		Position offset: -1

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs1258221815; hg19: chr9-17135231;