chr10-125026397-A-T

Variant names:

• chr10-125026397-A-T
• rs3012075
• ENST00000309035.11:c.1363T>A

Variant summary

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

The ENST00000309035.11(CTBP2):​c.1363T>A​(p.Tyr455Asn) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. Y455H) has been classified as Benign.

• Frequency: Genomes: not found (cov: 32)
• Consequence: CTBP2 ENST00000309035.11 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 3.95
• Publications: 23 publications found

Genes affected

CTBP2 (HGNC:2495): (C-terminal binding protein 2) This gene produces alternative transcripts encoding two distinct proteins. One protein is a transcriptional repressor, while the other isoform is a major component of specialized synapses known as synaptic ribbons. Both proteins contain a NAD+ binding domain similar to NAD+-dependent 2-hydroxyacid dehydrogenases. A portion of the 3' untranslated region was used to map this gene to chromosome 21q21.3; however, it was noted that similar loci elsewhere in the genome are likely. Blast analysis shows that this gene is present on chromosome 10. Several transcript variants encoding two different isoforms have been found for this gene. [provided by RefSeq, Feb 2014]

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: ENST00000309035.11. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CTBP2	NM_001329.4	MANE Select	c.58+12600T>A		intron	N/A	NP_001320.1
	CTBP2	NM_022802.3		c.1363T>A	p.Tyr455Asn	missense	Exon 1 of 9	NP_073713.2
	CTBP2	NM_001083914.3		c.58+12600T>A		intron	N/A	NP_001077383.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	CTBP2	ENST00000309035.11	TSL:1	c.1363T>A	p.Tyr455Asn	missense	Exon 1 of 9	ENSP00000311825.6
	CTBP2	ENST00000337195.11	TSL:1 MANE Select	c.58+12600T>A		intron	N/A	ENSP00000338615.5
	CTBP2	ENST00000411419.7	TSL:1	c.58+12600T>A		intron	N/A	ENSP00000410474.2

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 68

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.11
BayesDel_addAF	Uncertain	0.016	T
BayesDel_noAF	Benign	-0.21
CADD	Benign	19
DANN	Uncertain	0.98
Eigen	Benign	-0.25
Eigen_PC	Benign	-0.26
FATHMM_MKL	Uncertain	0.77	D
LIST_S2	Benign	0.55	T
M_CAP	Uncertain	0.10	D
MetaRNN	Uncertain	0.45	T
MetaSVM	Benign	-0.52	T
PhyloP100		3.9
PrimateAI	Uncertain	0.54	T
PROVEAN	Benign	-1.3	N
REVEL	Benign	0.24
Sift	Uncertain	0.0030	D
Sift4G	Benign	0.10	T
Polyphen		0.36	B
Vest4		0.69
MutPred		0.14		Loss of catalytic residue at Y455 (P = 0.0855)
MVP		0.73
MPC		0.20
ClinPred		0.92	D
GERP RS		4.0
gMVP		0.35
Mutation Taster		=90/10	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

dbSNP: rs3012075; hg19: chr10-126714966;