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21-33559681-C-T

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 0P and 4B. BP4_ModerateBP6_Moderate

The NM_138927.4(SON):c.6563C>T(p.Ala2188Val) variant causes a missense change. The variant allele was found at a frequency of 0.0000143 in 1,613,674 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)
Exomes 𝑓: 0.000015 ( 0 hom. )

Consequence

SON
NM_138927.4 missense

Scores

7
12

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: 3.64
Variant links:
Genes affected
SON (HGNC:11183): (SON DNA and RNA binding protein) This gene encodes a protein that contains multiple simple repeats. The encoded protein binds RNA and promotes pre-mRNA splicing, particularly of transcripts with poor splice sites. The protein also recognizes a specific DNA sequence found in the human hepatitis B virus (HBV) and represses HBV core promoter activity. There is a pseudogene for this gene on chromosome 1. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2013]
DONSON (HGNC:2993): (DNA replication fork stabilization factor DONSON) This gene lies downstream of the SON gene and spans 10 kb on chromosome 21. The function of this gene is unknown. [provided by RefSeq, Jul 2008]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -4 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.20059666).
BP6
Variant 21-33559681-C-T is Benign according to our data. Variant chr21-33559681-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 1609417.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
SONNM_138927.4 linkuse as main transcriptc.6563C>T p.Ala2188Val missense_variant 6/12 ENST00000356577.10
SONNM_032195.3 linkuse as main transcriptc.6563C>T p.Ala2188Val missense_variant 6/7
SONNM_001291412.3 linkuse as main transcriptc.647C>T p.Ala216Val missense_variant 5/11
SONNR_103797.2 linkuse as main transcriptn.6618C>T non_coding_transcript_exon_variant 6/13

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
SONENST00000356577.10 linkuse as main transcriptc.6563C>T p.Ala2188Val missense_variant 6/121 NM_138927.4 P3P18583-1

Frequencies

GnomAD3 genomes
AF:
0.00000658
AC:
1
AN:
152060
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00
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:
0.0000147
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.00000797
AC:
2
AN:
251078
Hom.:
0
AF XY:
0.0000147
AC XY:
2
AN XY:
135808
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.0000544
Gnomad SAS exome
AF:
0.0000327
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000151
AC:
22
AN:
1461614
Hom.:
0
Cov.:
32
AF XY:
0.0000138
AC XY:
10
AN XY:
727138
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.0000252
Gnomad4 SAS exome
AF:
0.0000348
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000162
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.00000658
AC:
1
AN:
152060
Hom.:
0
Cov.:
32
AF XY:
0.00
AC XY:
0
AN XY:
74248
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.00
Gnomad4 ASJ
AF:
0.00
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.00
Gnomad4 FIN
AF:
0.00
Gnomad4 NFE
AF:
0.0000147
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.0000712
Hom.:
0
Bravo
AF:
0.00000378
ExAC
AF:
0.0000165
AC:
2

ClinVar

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

Submissions by phenotype

not provided Benign:1
Likely benign, criteria provided, single submitterclinical testingInvitaeFeb 16, 2023- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.50
BayesDel_addAF
Benign
-0.27
T
BayesDel_noAF
Benign
-0.46
Cadd
Benign
23
Dann
Uncertain
0.98
DEOGEN2
Benign
0.021
T;.;.;.
Eigen
Benign
0.18
Eigen_PC
Uncertain
0.30
FATHMM_MKL
Uncertain
0.92
D
LIST_S2
Uncertain
0.89
D;D;D;D
M_CAP
Benign
0.0070
T
MetaRNN
Benign
0.20
T;T;T;T
MetaSVM
Benign
-0.93
T
MutationAssessor
Benign
0.46
N;.;N;.
MutationTaster
Benign
1.0
D;D;D;D
PrimateAI
Uncertain
0.74
T
PROVEAN
Benign
-2.0
N;N;N;N
REVEL
Benign
0.24
Sift
Benign
0.18
T;T;T;T
Sift4G
Uncertain
0.0040
D;D;D;D
Polyphen
1.0
D;.;D;.
Vest4
0.33
MutPred
0.093
Loss of helix (P = 0.079);.;Loss of helix (P = 0.079);.;
MVP
0.58
MPC
1.2
ClinPred
0.67
D
GERP RS
5.4
RBP_binding_hub_radar
0.92
RBP_regulation_power_radar
2.0
Varity_R
0.087
gMVP
0.86

Splicing

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: rs758559171; hg19: chr21-34931987; API