20-5185806-A-G

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_003818.4(CDS2):c.808A>G(p.Thr270Ala) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.0000157 in 1,461,866 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.000016 ( 0 hom. )

Consequence

CDS2
NM_003818.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 9.11

Variant links:

Genes affected

CDS2 (HGNC:1801): (CDP-diacylglycerol synthase 2) Breakdown products of phosphoinositides are ubiquitous second messengers that function downstream of many G protein-coupled receptors and tyrosine kinases regulating cell growth, calcium metabolism, and protein kinase C activity. This gene encodes an enzyme which regulates the amount of phosphatidylinositol available for signaling by catalyzing the conversion of phosphatidic acid to CDP-diacylglycerol. This enzyme is an integral membrane protein localized to two subcellular domains, the matrix side of the inner mitochondrial membrane where it is thought to be involved in the synthesis of phosphatidylglycerol and cardiolipin and the cytoplasmic side of the endoplasmic reticulum where it functions in phosphatidylinositol biosynthesis. Two genes encoding this enzyme have been identified in humans, one mapping to human chromosome 4q21 and a second to 20p13. [provided by RefSeq, Jul 2008]

CDS2 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.761

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CDS2	NM_003818.4 linkuse as main transcript	c.808A>G	p.Thr270Ala	missense_variant	9/13	ENST00000460006.6
CDS2	XM_006723660.3 linkuse as main transcript	c.808A>G	p.Thr270Ala	missense_variant	9/12

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CDS2	ENST00000460006.6 linkuse as main transcript	c.808A>G	p.Thr270Ala	missense_variant	9/13	1	NM_003818.4	P1	O95674-1
CDS2	ENST00000450570.1 linkuse as main transcript	c.643A>G	p.Thr215Ala	missense_variant	8/9	3			O95674-2
CDS2	ENST00000379070.3 linkuse as main transcript	n.1063A>G		non_coding_transcript_exon_variant	6/10	2
CDS2	ENST00000468817.5 linkuse as main transcript	n.1493A>G		non_coding_transcript_exon_variant	10/11	2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.0000557

AC:

AN:

251456

Hom.:

AF XY:

0.0000589

AC XY:

AN XY:

135900

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000347

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000176

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000157

AC:

AN:

1461866

Hom.:

Cov.:

AF XY:

0.0000193

AC XY:

AN XY:

727230

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.000291

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:

0.00000899

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000508

Hom.:

Bravo

AF:

0.0000113

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ExAC

AF:

0.0000659

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 09, 2021

The c.808A>G (p.T270A) alteration is located in exon 9 (coding exon 9) of the CDS2 gene. This alteration results from a A to G substitution at nucleotide position 808, causing the threonine (T) at amino acid position 270 to be replaced by an alanine (A). 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

0.88

BayesDel_addAF

Benign

-0.021

BayesDel_noAF

Uncertain

0.040

Cadd

Pathogenic

Dann

Uncertain

1.0

DEOGEN2

Benign

0.39

T;.

Eigen

Uncertain

0.53

Eigen_PC

Uncertain

0.56

FATHMM_MKL

Pathogenic

1.0

LIST_S2

Pathogenic

0.99

D;D

M_CAP

Benign

0.043

MetaRNN

Pathogenic

0.76

D;D

MetaSVM

Benign

-0.94

MutationAssessor

Pathogenic

3.5

H;.

MutationTaster

Benign

1.0

D;D;D

PrimateAI

Uncertain

0.76

PROVEAN

Pathogenic

-4.7

D;D

REVEL

Uncertain

0.42

Sift

Pathogenic

0.0

D;D

Sift4G

Uncertain

0.0080

D;D

Polyphen

0.97

D;.

Vest4

0.80

MutPred

0.71

Loss of helix (P = 0.0444);.;

MVP

0.62

MPC

1.3

ClinPred

0.80

GERP RS

4.7

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.80

gMVP

0.93

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over