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GeneBe

12-8605263-G-T

Variant summary

Our verdict is Benign. Variant got -7 ACMG points: 0P and 7B. BP4_StrongBP6_ModerateBP7

The NM_020661.4(AICDA):c.379C>A(p.Arg127=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000774 in 1,614,180 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.00038 ( 2 hom., cov: 33)
Exomes 𝑓: 0.000046 ( 0 hom. )

Consequence

AICDA
NM_020661.4 synonymous

Scores

2

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 1.16
Variant links:
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 -7 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.54).
BP6
Variant 12-8605263-G-T is Benign according to our data. Variant chr12-8605263-G-T is described in ClinVar as [Likely_benign]. Clinvar id is 463869.Status of the report is criteria_provided_single_submitter, 1 stars.
BP7
Synonymous conserved (PhyloP=1.16 with no splicing effect.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
AICDANM_020661.4 linkuse as main transcriptc.379C>A p.Arg127= synonymous_variant 3/5 ENST00000229335.11
AICDANM_001330343.2 linkuse as main transcriptc.379C>A p.Arg127= synonymous_variant 3/5
AICDANM_001410970.1 linkuse as main transcriptc.379C>A p.Arg127= synonymous_variant 3/4

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
AICDAENST00000229335.11 linkuse as main transcriptc.379C>A p.Arg127= synonymous_variant 3/51 NM_020661.4 P1Q9GZX7-1

Frequencies

GnomAD3 genomes
AF:
0.000355
AC:
54
AN:
152242
Hom.:
1
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00121
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.000196
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:
0.00
Gnomad OTH
AF:
0.000478
GnomAD3 exomes
AF:
0.0000805
AC:
20
AN:
248296
Hom.:
0
AF XY:
0.0000444
AC XY:
6
AN XY:
135066
show subpopulations
Gnomad AFR exome
AF:
0.00105
Gnomad AMR exome
AF:
0.0000870
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.0000557
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000458
AC:
67
AN:
1461820
Hom.:
0
Cov.:
33
AF XY:
0.0000371
AC XY:
27
AN XY:
727224
show subpopulations
Gnomad4 AFR exome
AF:
0.00128
Gnomad4 AMR exome
AF:
0.0000895
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.000101
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000180
Gnomad4 OTH exome
AF:
0.000232
GnomAD4 genome
AF:
0.000381
AC:
58
AN:
152360
Hom.:
2
Cov.:
33
AF XY:
0.000430
AC XY:
32
AN XY:
74496
show subpopulations
Gnomad4 AFR
AF:
0.00130
Gnomad4 AMR
AF:
0.000196
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.00
Gnomad4 OTH
AF:
0.000473
Alfa
AF:
0.000136
Hom.:
0
Bravo
AF:
0.000404
Asia WGS
AF:
0.00144
AC:
5
AN:
3478

ClinVar

Significance: Likely benign
Submissions summary: Benign:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

Hyper-IgM syndrome type 2 Benign:1
Likely benign, criteria provided, single submitterclinical testingInvitaeNov 13, 2023- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.54
Cadd
Benign
6.8
Dann
Benign
0.49

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.010
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.

Other links and lift over

dbSNP: rs141451637; hg19: chr12-8757859; API