Genetic Variant CD28:p.Arg203Cys (chr2-203734856-C-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

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

The NM_006139.4(CD28):c.607C>T(p.Arg203Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000285 in 1,614,092 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000029 ( 0 hom. )

Consequence

CD28
NM_006139.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.58

Variant links:

Genes affected

CD28 (HGNC:1653): (CD28 molecule) The protein encoded by this gene is essential for T-cell proliferation and survival, cytokine production, and T-helper type-2 development. Several alternatively spliced transcript variants encoding different isoforms have been found for this gene.[provided by RefSeq, Jul 2011]

CD28 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

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 rank	MANE	Protein	UniProt
CD28	NM_006139.4 link	c.607C>T	p.Arg203Cys	missense_variant	Exon 4 of 4	ENST00000324106.9	NP_006130.1	P10747-1
CD28	NM_001410981.1 link	c.649C>T	p.Arg217Cys	missense_variant	Exon 4 of 4		NP_001397910.1
CD28	NM_001243077.2 link	c.316C>T	p.Arg106Cys	missense_variant	Exon 4 of 4		NP_001230006.1	P10747-4B4E0L1
CD28	NM_001243078.2 link	c.250C>T	p.Arg84Cys	missense_variant	Exon 3 of 3		NP_001230007.1	P10747-2B4E0L1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
CD28	ENST00000324106.9 link	c.607C>T	p.Arg203Cys	missense_variant	Exon 4 of 4	1	NM_006139.4	ENSP00000324890.7	P10747-1
CD28	ENST00000458610.6 link	c.649C>T	p.Arg217Cys	missense_variant	Exon 4 of 4	1		ENSP00000393648.2	P10747-7
CD28	ENST00000374481.7 link	c.250C>T	p.Arg84Cys	missense_variant	Exon 3 of 3	1		ENSP00000363605.4	P10747-2

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152224

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:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000199

AC:

AN:

250682

Hom.:

AF XY:

0.0000369

AC XY:

AN XY:

135634

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

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:

0.0000354

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000287

AC:

AN:

1461868

Hom.:

Cov.:

AF XY:

0.0000316

AC XY:

AN XY:

727238

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000224

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:

0.0000342

Gnomad4 OTH exome

AF:

0.0000497

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152224

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74360

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000588

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000772

Hom.:

Bravo

AF:

0.0000378

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.0000330

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000593

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Mar 14, 2023

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.607C>T (p.R203C) alteration is located in exon 4 (coding exon 4) of the CD28 gene. This alteration results from a C to T substitution at nucleotide position 607, causing the arginine (R) at amino acid position 203 to be replaced by a cysteine (C). 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

Uncertain

0.51

BayesDel_addAF

Uncertain

0.079

BayesDel_noAF

Uncertain

0.010

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Pathogenic

0.88

.;.;D

Eigen

Uncertain

0.50

Eigen_PC

Uncertain

0.39

FATHMM_MKL

Benign

0.65

LIST_S2

Uncertain

0.94

D;D;D

M_CAP

Uncertain

0.29

MetaRNN

Uncertain

0.45

T;T;T

MetaSVM

Uncertain

-0.11

MutationAssessor

Benign

1.7

.;.;L

PrimateAI

Uncertain

0.51

PROVEAN

Uncertain

-4.2

.;D;D

REVEL

Uncertain

0.49

Sift

Uncertain

0.0010

.;D;D

Sift4G

Pathogenic

0.0010

D;D;D

Polyphen

1.0

D;.;D

Vest4

0.25

MVP

0.92

MPC

0.87

ClinPred

0.86

GERP RS

3.9

Varity_R

0.22

gMVP

0.72

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