12-8602987-C-T
Variant summary
Our verdict is Benign. Variant got -14 ACMG points: 0P and 14B. BP4_StrongBP6_ModerateBA1
The NM_020661.4(AICDA):c.*1297G>A variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0359 in 152,304 control chromosomes in the GnomAD database, including 369 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).
Frequency
Genomes: 𝑓 0.036 ( 369 hom., cov: 30)
Exomes 𝑓: 0.0050 ( 0 hom. )
Consequence
AICDA
NM_020661.4 3_prime_UTR
NM_020661.4 3_prime_UTR
Scores
2
Clinical Significance
Conservation
PhyloP100: -1.15
Genes affected
AICDA (HGNC:13203): (activation induced cytidine deaminase) This gene encodes a RNA-editing deaminase that is a member of the cytidine deaminase family. AICDA is specifically expressed and active in germinal center-like B cells. In the germinal center, AICDA is involved in somatic hypermutation, gene conversion, and class-switch recombination of immunoglobulin genes. An epigenetic role in neoplastic transformation and lymphoma progression has been experimentally ascribed to AICDA using mouse models. Defects in this gene are the cause of autosomal recessive hyper-IgM immunodeficiency syndrome type 2 (HIGM2). [provided by RefSeq, Jul 2020]
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ACMG classification
Classification made for transcript
Verdict is Benign. Variant got -14 ACMG points.
BP4
?
Computational evidence support a benign effect (BayesDel_noAF=-0.99).
BP6
?
Variant 12-8602987-C-T is Benign according to our data. Variant chr12-8602987-C-T is described in ClinVar as [Benign]. Clinvar id is 310552.Status of the report is criteria_provided_single_submitter, 1 stars.
BA1
?
GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.122 is higher than 0.05.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
AICDA | NM_020661.4 | c.*1297G>A | 3_prime_UTR_variant | 5/5 | ENST00000229335.11 | ||
AICDA | NM_001330343.2 | c.*1297G>A | 3_prime_UTR_variant | 5/5 | |||
AICDA | NM_001410970.1 | c.*1340G>A | 3_prime_UTR_variant | 4/4 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
AICDA | ENST00000229335.11 | c.*1297G>A | 3_prime_UTR_variant | 5/5 | 1 | NM_020661.4 | P1 |
Frequencies
GnomAD3 genomes ? AF: 0.0359 AC: 5450AN: 151988Hom.: 366 Cov.: 30
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GnomAD4 exome AF: 0.00500 AC: 1AN: 200Hom.: 0 Cov.: 0 AF XY: 0.00649 AC XY: 1AN XY: 154
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GnomAD4 genome ? AF: 0.0359 AC: 5464AN: 152104Hom.: 369 Cov.: 30 AF XY: 0.0351 AC XY: 2613AN XY: 74356
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ClinVar
Significance: Benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
Hyper-IgM syndrome type 2 Benign:1
Benign, criteria provided, single submitter | clinical testing | Illumina Laboratory Services, Illumina | Jan 13, 2018 | This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. - |
Computational scores
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BayesDel_noAF
Benign
Cadd
Benign
Dann
Benign
Splicing
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SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at