2-203868017-G-C
Variant summary
Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2
The NM_005214.5(CTLA4):c.75G>C(p.Leu25=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00138 in 1,613,994 control chromosomes in the GnomAD database, including 22 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).
Frequency
Genomes: 𝑓 0.0071 ( 12 hom., cov: 33)
Exomes 𝑓: 0.00079 ( 10 hom. )
Consequence
CTLA4
NM_005214.5 synonymous
NM_005214.5 synonymous
Scores
2
Clinical Significance
Conservation
PhyloP100: 0.457
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]
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ACMG classification
Classification made for transcript
Verdict is Benign. Variant got -21 ACMG points.
BP4
?
Computational evidence support a benign effect (BayesDel_noAF=-0.86).
BP6
?
Variant 2-203868017-G-C is Benign according to our data. Variant chr2-203868017-G-C is described in ClinVar as [Benign]. Clinvar id is 475280.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr2-203868017-G-C is described in Lovd as [Benign].
BP7
?
Synonymous conserved (PhyloP=0.457 with no splicing effect.
BS1
?
Variant frequency is greater than expected in population afr. gnomad4 allele frequency = 0.00707 (1077/152264) while in subpopulation AFR AF= 0.0243 (1010/41528). AF 95% confidence interval is 0.0231. There are 12 homozygotes in gnomad4. There are 486 alleles in male gnomad4 subpopulation. Median coverage is 33. This position pass quality control queck.
BS2
?
High AC in GnomAd at 1075 AD gene.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
CTLA4 | NM_005214.5 | c.75G>C | p.Leu25= | synonymous_variant | 1/4 | ENST00000648405.2 | |
CTLA4 | NM_001037631.3 | c.75G>C | p.Leu25= | synonymous_variant | 1/3 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
CTLA4 | ENST00000648405.2 | c.75G>C | p.Leu25= | synonymous_variant | 1/4 | NM_005214.5 | P1 |
Frequencies
GnomAD3 genomes ? AF: 0.00707 AC: 1075AN: 152146Hom.: 12 Cov.: 33
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GnomAD3 exomes AF: 0.00192 AC: 482AN: 251380Hom.: 4 AF XY: 0.00121 AC XY: 164AN XY: 135858
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GnomAD4 exome AF: 0.000785 AC: 1148AN: 1461730Hom.: 10 Cov.: 32 AF XY: 0.000657 AC XY: 478AN XY: 727188
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ClinVar
Significance: Benign
Submissions summary: Benign:5
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
not specified Benign:3
Benign, no assertion criteria provided | clinical testing | Laboratory of Diagnostic Genome Analysis, Leiden University Medical Center (LUMC) | - | - - |
Benign, criteria provided, single submitter | clinical testing | Genetic Services Laboratory, University of Chicago | Dec 01, 2021 | - - |
Benign, no assertion criteria provided | clinical testing | Clinical Genetics DNA and cytogenetics Diagnostics Lab, Erasmus MC, Erasmus Medical Center | - | - - |
Autoimmune lymphoproliferative syndrome due to CTLA4 haploinsuffiency Benign:1
Benign, criteria provided, single submitter | clinical testing | Invitae | Jan 22, 2024 | - - |
not provided Benign:1
Benign, criteria provided, single submitter | clinical testing | ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories | Oct 16, 2023 | - - |
Computational scores
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BayesDel_noAF
Benign
Cadd
Benign
Dann
Benign
Splicing
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Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at