rs2430853

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BA1

The NM_015295.3(SMCHD1):ā€‹c.174G>Cā€‹(p.Ala58=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.563 in 1,489,176 control chromosomes in the GnomAD database, including 241,052 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (ā˜…ā˜…). Synonymous variant affecting the same amino acid position (i.e. A58A) has been classified as Pathogenic.

Frequency

Genomes: š‘“ 0.63 ( 32063 hom., cov: 33)
Exomes š‘“: 0.55 ( 208989 hom. )

Consequence

SMCHD1
NM_015295.3 synonymous

Scores

2

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:7

Conservation

PhyloP100: -0.813
Variant links:
Genes affected
SMCHD1 (HGNC:29090): (structural maintenance of chromosomes flexible hinge domain containing 1) This gene encodes a protein which contains a hinge region domain found in members of the SMC (structural maintenance of chromosomes) protein family. [provided by RefSeq, Dec 2011]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -21 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.85).
BP6
Variant 18-2656249-G-C is Benign according to our data. Variant chr18-2656249-G-C is described in ClinVar as [Benign]. Clinvar id is 260632.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr18-2656249-G-C is described in Lovd as [Benign].
BP7
Synonymous conserved (PhyloP=-0.813 with no splicing effect.
BA1
GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.842 is higher than 0.05.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
SMCHD1NM_015295.3 linkuse as main transcriptc.174G>C p.Ala58= synonymous_variant 1/48 ENST00000320876.11 NP_056110.2

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
SMCHD1ENST00000320876.11 linkuse as main transcriptc.174G>C p.Ala58= synonymous_variant 1/485 NM_015295.3 ENSP00000326603 P2A6NHR9-1
SMCHD1ENST00000688342.1 linkuse as main transcriptc.174G>C p.Ala58= synonymous_variant 1/47 ENSP00000508422 A2
SMCHD1ENST00000684915.1 linkuse as main transcriptn.331G>C non_coding_transcript_exon_variant 1/14

Frequencies

GnomAD3 genomes
AF:
0.633
AC:
96332
AN:
152064
Hom.:
32011
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.849
Gnomad AMI
AF:
0.646
Gnomad AMR
AF:
0.575
Gnomad ASJ
AF:
0.655
Gnomad EAS
AF:
0.343
Gnomad SAS
AF:
0.639
Gnomad FIN
AF:
0.570
Gnomad MID
AF:
0.672
Gnomad NFE
AF:
0.545
Gnomad OTH
AF:
0.631
GnomAD3 exomes
AF:
0.558
AC:
82317
AN:
147528
Hom.:
23631
AF XY:
0.557
AC XY:
46456
AN XY:
83462
show subpopulations
Gnomad AFR exome
AF:
0.851
Gnomad AMR exome
AF:
0.539
Gnomad ASJ exome
AF:
0.640
Gnomad EAS exome
AF:
0.319
Gnomad SAS exome
AF:
0.621
Gnomad FIN exome
AF:
0.547
Gnomad NFE exome
AF:
0.533
Gnomad OTH exome
AF:
0.565
GnomAD4 exome
AF:
0.555
AC:
741595
AN:
1336994
Hom.:
208989
Cov.:
46
AF XY:
0.557
AC XY:
368498
AN XY:
661722
show subpopulations
Gnomad4 AFR exome
AF:
0.873
Gnomad4 AMR exome
AF:
0.554
Gnomad4 ASJ exome
AF:
0.655
Gnomad4 EAS exome
AF:
0.334
Gnomad4 SAS exome
AF:
0.631
Gnomad4 FIN exome
AF:
0.554
Gnomad4 NFE exome
AF:
0.545
Gnomad4 OTH exome
AF:
0.575
GnomAD4 genome
AF:
0.634
AC:
96443
AN:
152182
Hom.:
32063
Cov.:
33
AF XY:
0.632
AC XY:
47043
AN XY:
74388
show subpopulations
Gnomad4 AFR
AF:
0.849
Gnomad4 AMR
AF:
0.576
Gnomad4 ASJ
AF:
0.655
Gnomad4 EAS
AF:
0.342
Gnomad4 SAS
AF:
0.638
Gnomad4 FIN
AF:
0.570
Gnomad4 NFE
AF:
0.545
Gnomad4 OTH
AF:
0.631
Alfa
AF:
0.448
Hom.:
1129
Bravo
AF:
0.642
Asia WGS
AF:
0.520
AC:
1810
AN:
3478

ClinVar

Significance: Benign
Submissions summary: Benign:7
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Benign:3
Benign, criteria provided, single submitterclinical testingAthena DiagnosticsDec 18, 2018- -
Benign, criteria provided, single submitterclinical testingGeneDxMar 29, 2021- -
Benign, criteria provided, single submitternot providedBreakthrough Genomics, Breakthrough Genomics-- -
not specified Benign:2
Benign, criteria provided, single submitterclinical testingPreventionGenetics, part of Exact Sciences-- -
Benign, criteria provided, single submitterclinical testingEurofins Ntd Llc (ga)Mar 23, 2016- -
Facioscapulohumeral muscular dystrophy 2 Benign:1
Benign, criteria provided, single submitterclinical testingLabcorp Genetics (formerly Invitae), LabcorpFeb 01, 2024- -
Arrhinia with choanal atresia and microphthalmia syndrome Benign:1
Benign, criteria provided, single submitterclinical testingGenome-Nilou LabJul 15, 2021- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.85
CADD
Benign
6.1
DANN
Benign
0.51
RBP_binding_hub_radar
0.92
RBP_regulation_power_radar
2.1

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.0
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: rs2430853; hg19: chr18-2656248; COSMIC: COSV55251101; COSMIC: COSV55251101; API