X-148652015-C-T
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Variant summary
Our verdict is Uncertain significance. Variant got 1 ACMG points: 1P and 0B. PP3
The NM_002025.4(AFF2):c.64C>T(p.Arg22Cys) variant causes a missense change. The variant allele was found at a frequency of 0.0000108 in 1,198,868 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 1 hemizygotes in GnomAD. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).
Frequency
Genomes: 𝑓 0.0000090 ( 0 hom., 0 hem., cov: 22)
Exomes 𝑓: 0.000011 ( 0 hom. 1 hem. )
Consequence
AFF2
NM_002025.4 missense
NM_002025.4 missense
Scores
13
3
1
Clinical Significance
Conservation
PhyloP100: 4.76
Genes affected
AFF2 (HGNC:3776): (ALF transcription elongation factor 2) This gene encodes a putative transcriptional activator that is a member of the AF4\FMR2 gene family. This gene is associated with the folate-sensitive fragile X E locus on chromosome X. A repeat polymorphism in the fragile X E locus results in silencing of this gene causing Fragile X E syndrome. Fragile X E syndrome is a form of nonsyndromic X-linked cognitive disability. In addition, this gene contains 6-25 GCC repeats that are expanded to >200 repeats in the disease state. Alternate splicing results in multiple transcript variants.[provided by RefSeq, Jul 2016]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 1 ACMG points.
PP3
MetaRNN computational evidence supports a deleterious effect, 0.831
Transcripts
RefSeq
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Protein | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|---|
AFF2 | ENST00000370460.7 | c.64C>T | p.Arg22Cys | missense_variant | 2/21 | 5 | NM_002025.4 | ENSP00000359489.2 | ||
AFF2 | ENST00000342251.7 | c.64C>T | p.Arg22Cys | missense_variant | 2/20 | 1 | ENSP00000345459.4 | |||
AFF2 | ENST00000370457.9 | c.64C>T | p.Arg22Cys | missense_variant | 2/20 | 1 | ENSP00000359486.6 | |||
AFF2 | ENST00000370458.5 | c.64C>T | p.Arg22Cys | missense_variant | 2/8 | 1 | ENSP00000359487.1 |
Frequencies
GnomAD3 genomes AF: 0.00000904 AC: 1AN: 110591Hom.: 0 Cov.: 22 AF XY: 0.00 AC XY: 0AN XY: 32889
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GnomAD3 exomes AF: 0.0000113 AC: 2AN: 176742Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 61652
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GnomAD4 exome AF: 0.0000110 AC: 12AN: 1088277Hom.: 0 Cov.: 27 AF XY: 0.00000282 AC XY: 1AN XY: 354669
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GnomAD4 genome AF: 0.00000904 AC: 1AN: 110591Hom.: 0 Cov.: 22 AF XY: 0.00 AC XY: 0AN XY: 32889
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ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link
Submissions by phenotype
not provided Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Eurofins Ntd Llc (ga) | Mar 31, 2016 | - - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Pathogenic
BayesDel_addAF
Pathogenic
D
BayesDel_noAF
Pathogenic
CADD
Uncertain
DANN
Pathogenic
DEOGEN2
Pathogenic
D;.;.;.
FATHMM_MKL
Uncertain
D
LIST_S2
Uncertain
D;D;D;D
M_CAP
Pathogenic
D
MetaRNN
Pathogenic
D;D;D;D
MetaSVM
Uncertain
D
MutationAssessor
Pathogenic
M;M;M;M
PrimateAI
Pathogenic
D
PROVEAN
Pathogenic
D;D;D;D
REVEL
Pathogenic
Sift
Pathogenic
D;D;D;D
Sift4G
Pathogenic
D;D;D;D
Polyphen
P;P;D;P
Vest4
MVP
MPC
ClinPred
D
GERP RS
Varity_R
gMVP
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