dbSNP rs35219727: CTLA4:c.110-1260G>A (chr2-203869326-G-A) – ACMG Classification: Benign (-12 pts)

Variant summary

Our verdict is Benign. The variant received -12 ACMG points: 0P and 12B. BP4_StrongBS1BS2

The NM_005214.5(CTLA4):c.110-1260G>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00139 in 152,324 control chromosomes in the GnomAD database, including 5 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.0014 ( 5 hom., cov: 32)

Consequence

CTLA4
NM_005214.5 intron

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 2.16

Publications

4 publications found

Variant links:

Genes affected

CTLA4 (HGNC:2505): (cytotoxic T-lymphocyte associated protein 4) This gene is a member of the immunoglobulin superfamily and encodes a protein which transmits an inhibitory signal to T cells. The protein contains a V domain, a transmembrane domain, and a cytoplasmic tail. Alternate transcriptional splice variants, encoding different isoforms, have been characterized. The membrane-bound isoform functions as a homodimer interconnected by a disulfide bond, while the soluble isoform functions as a monomer. Mutations in this gene have been associated with insulin-dependent diabetes mellitus, Graves disease, Hashimoto thyroiditis, celiac disease, systemic lupus erythematosus, thyroid-associated orbitopathy, and other autoimmune diseases. [provided by RefSeq, Jul 2008]

CTLA4 Gene-Disease associations (from GenCC):

autoimmune lymphoproliferative syndrome due to CTLA4 haploinsufficiency
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), ClinGen, Orphanet
systemic lupus erythematosus
Inheritance: Unknown Classification: SUPPORTIVE Submitted by: Orphanet

CTLA4 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -12 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.82).

BS1

Variant frequency is greater than expected in population eas. GnomAd4 allele frequency = 0.00139 (211/152324) while in subpopulation EAS AF = 0.0233 (121/5194). AF 95% confidence interval is 0.0199. There are 5 homozygotes in GnomAd4. There are 108 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check.

BS2

High AC in GnomAd4 at 211 Unknown,AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CTLA4	NM_005214.5 link	c.110-1260G>A		intron_variant	Intron 1 of 3	ENST00000648405.2	NP_005205.2	P16410-1
CTLA4	NM_001037631.3 link	c.110-1260G>A		intron_variant	Intron 1 of 2		NP_001032720.1	P16410-5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CTLA4	ENST00000648405.2 link	c.110-1260G>A		intron_variant	Intron 1 of 3		NM_005214.5	ENSP00000497102.1		P16410-1

Frequencies

GnomAD3 genomes

AF:

0.00139

AC:

212

AN:

152206

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00111

Gnomad ASJ

AF:

0.000576

Gnomad EAS

AF:

0.0236

Gnomad SAS

AF:

0.00207

Gnomad FIN

AF:

0.00358

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000294

Gnomad OTH

AF:

0.000478

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome

AF:

0.00139

AC:

211

AN:

152324

Hom.:

Cov.:

AF XY:

0.00145

AC XY:

108

AN XY:

74486

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41576

American (AMR)

AF:

0.00111

AC:

AN:

15308

Ashkenazi Jewish (ASJ)

AF:

0.000576

AC:

AN:

3472

East Asian (EAS)

AF:

0.0233

AC:

121

AN:

5194

South Asian (SAS)

AF:

0.00187

AC:

AN:

4816

European-Finnish (FIN)

AF:

0.00358

AC:

AN:

10618

Middle Eastern (MID)

AF:

0.00

AC:

AN:

294

European-Non Finnish (NFE)

AF:

0.000294

AC:

AN:

68020

Other (OTH)

AF:

0.00142

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.502

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Genome Hom

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.000635

Hom.:

Bravo

AF:

0.00141

Asia WGS

AF:

0.0100

AC:

AN:

3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.82

CADD

Benign

5.4

(source)

DANN

Benign

0.46

PhyloP100

2.2

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

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over