2-203867624-C-T

Variant summary

Our verdict is Benign. Variant got -18 ACMG points: 0P and 18B. BP4_Moderate BP6_Very_Strong BA1

The ENST00000696479.1(CTLA4):c.48-294C>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0682 in 152,272 control chromosomes in the GnomAD database, including 459 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

• Frequency: Genomes: 𝑓 0.068 (459 hom., cov: 33)
• Consequence: CTLA4 ENST00000696479.1 intron
• Clinical Significance: Benign criteria provided, multiple submitters, no conflicts B:2
• Conservation: PhyloP100: 0.123

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]

ACMG classification

Verdict is Benign. Variant got -18 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.25).
• BP6: Variant 2-203867624-C-T is Benign according to our data. Variant chr2-203867624-C-T is described in ClinVar as [Benign]. Clinvar id is 1168343.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
• BA1: GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.101 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CTLA4	ENST00000696479.1	c.48-294C>T		intron_variant

Frequencies

GnomAD3 genomes AF: 0.0683 AC: 10389 AN: 152154 Hom.: 458 Cov.: 33

Gnomad AFR AF: 0.0160

Gnomad AMI AF: 0.0429

Gnomad AMR AF: 0.0698

Gnomad ASJ AF: 0.0919

Gnomad EAS AF: 0.108

Gnomad SAS AF: 0.0402

Gnomad FIN AF: 0.0967

Gnomad MID AF: 0.0791

Gnomad NFE AF: 0.0933

Gnomad OTH AF: 0.0717

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

GnomAD4 genome AF: 0.0682 AC: 10386 AN: 152272 Hom.: 459 Cov.: 33 AF XY: 0.0679 AC XY: 5051 AN XY: 74430

Gnomad4 AFR AF: 0.0160

Gnomad4 AMR AF: 0.0698

Gnomad4 ASJ AF: 0.0919

Gnomad4 EAS AF: 0.108

Gnomad4 SAS AF: 0.0404

Gnomad4 FIN AF: 0.0967

Gnomad4 NFE AF: 0.0933

Gnomad4 OTH AF: 0.0714

Alfa AF: 0.0824 Hom.: 176

Bravo AF: 0.0653

Asia WGS AF: 0.0640 AC: 223 AN: 3478

ClinVar

Significance: Benign

Submissions summary: Benign:2

Revision: criteria provided, multiple submitters, no conflicts

Submissions by phenotype

Autoimmune lymphoproliferative syndrome due to CTLA4 haploinsuffiency Benign:1

Benign, criteria provided, single submitter

clinical testing

Invitae

Dec 19, 2023

- -

not provided Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

Nov 11, 2018

This variant is associated with the following publications: (PMID: 21387262, 17341658, 16297665, 11426323, 12058260, 20732370, 18396212, 19913589, 11327371, 24298899, 23756164, 26051683) -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.25
Cadd	Benign	15
Dann	Benign	0.60

Splicing

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

LitVar

Other links and lift over

dbSNP: rs5742909; hg19: chr2-204732347;