11-118344461-C-T

Variant names:

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_000073.3(CD3G):c.38C>T(p.Ala13Val) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000127 in 1,570,014 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. A13T) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 7.1e-7 ( 0 hom. )

Consequence

CD3G
NM_000073.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.0380

Publications

0 publications found

Variant links:

Genes affected

CD3G (HGNC:1675): (CD3 gamma subunit of T-cell receptor complex) The protein encoded by this gene is the CD3-gamma polypeptide, which together with CD3-epsilon, -delta and -zeta, and the T-cell receptor alpha/beta and gamma/delta heterodimers, forms the T-cell receptor-CD3 complex. This complex plays an important role in coupling antigen recognition to several intracellular signal-transduction pathways. The genes encoding the epsilon, gamma and delta polypeptides are located in the same cluster on chromosome 11. Defects in this gene are associated with T cell immunodeficiency. [provided by RefSeq, Jul 2008]

CD3G Gene-Disease associations (from GenCC):

combined immunodeficiency due to CD3gamma deficiency
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Orphanet, Labcorp Genetics (formerly Invitae), ClinGen

CD3G links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.09693295).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CD3G	NM_000073.3 link	c.38C>T	p.Ala13Val	missense_variant	Exon 1 of 7	ENST00000532917.3	NP_000064.1	P09693B0YIY5
CD3G	NM_001440319.1 link	c.38C>T	p.Ala13Val	missense_variant	Exon 1 of 7		NP_001427248.1
CD3G	XM_005271724.5 link	c.38C>T	p.Ala13Val	missense_variant	Exon 1 of 4		XP_005271781.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CD3G	ENST00000532917.3 link	c.38C>T	p.Ala13Val	missense_variant	Exon 1 of 7	1	NM_000073.3	ENSP00000431445.2		P09693

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152220

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

7.05e-7

AC:

AN:

1417794

Hom.:

Cov.:

AF XY:

0.00000143

AC XY:

AN XY:

700748

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32786

American (AMR)

AF:

0.00

AC:

AN:

37632

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25294

East Asian (EAS)

AF:

0.00

AC:

AN:

37836

South Asian (SAS)

AF:

0.00

AC:

AN:

80400

European-Finnish (FIN)

AF:

0.00

AC:

AN:

50516

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5712

European-Non Finnish (NFE)

AF:

9.18e-7

AC:

AN:

1088856

Other (OTH)

AF:

0.00

AC:

AN:

58762

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152220

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74362

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

41458

American (AMR)

AF:

0.00

AC:

AN:

15292

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5194

South Asian (SAS)

AF:

0.00

AC:

AN:

4830

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10620

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000147

AC:

AN:

68034

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.475

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000378

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Combined immunodeficiency due to CD3gamma deficiency

Uncertain:1

May 27, 2020

Labcorp Genetics (formerly Invitae), Labcorp

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function output the following: SIFT: "Tolerated"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0". The valine amino acid residue is found in multiple mammalian species, suggesting that this missense change does not adversely affect protein function. These predictions have not been confirmed by published functional studies and their clinical significance is uncertain. This variant has not been reported in the literature in individuals with CD3G-related conditions. This variant is not present in population databases (ExAC no frequency). This sequence change replaces alanine with valine at codon 13 of the CD3G protein (p.Ala13Val). The alanine residue is weakly conserved and there is a small physicochemical difference between alanine and valine. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.14

BayesDel_addAF

Benign

-0.13

BayesDel_noAF

Benign

-0.42

CADD

Benign

5.7

(source)

DANN

Benign

0.89

DEOGEN2

Benign

0.21

Eigen

Benign

-0.76

Eigen_PC

Benign

-0.76

FATHMM_MKL

Benign

0.033

LIST_S2

Benign

0.70

M_CAP

Benign

0.0094

MetaRNN

Benign

0.097

MetaSVM

Benign

-0.97

MutationAssessor

Benign

1.5

PhyloP100

0.038

PrimateAI

Benign

0.29

PROVEAN

Benign

-1.6

REVEL

Benign

0.076

Sift

Benign

0.15

Sift4G

Benign

0.41

Polyphen

0.022

Vest4

0.17

MutPred

0.37

Loss of helix (P = 0.3949);

MVP

0.63

MPC

0.34

ClinPred

0.062

GERP RS

1.3

PromoterAI

-0.038

Neutral

(source)

Varity_R

0.036

gMVP

0.52

Mutation Taster

=96/4

polymorphism

(source)

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over