rs12327477

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.3528A>Gā€‹(p.Thr1176=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.304 in 1,577,326 control chromosomes in the GnomAD database, including 76,454 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (ā˜…ā˜…).

Frequency

Genomes: š‘“ 0.30 ( 6927 hom., cov: 32)
Exomes š‘“: 0.30 ( 69527 hom. )

Consequence

SMCHD1
NM_015295.3 synonymous

Scores

2

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:6

Conservation

PhyloP100: 0.857
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=-0.57).
BP6
Variant 18-2740716-A-G is Benign according to our data. Variant chr18-2740716-A-G is described in ClinVar as [Benign]. Clinvar id is 260643.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars. Variant chr18-2740716-A-G is described in Lovd as [Benign].
BP7
Synonymous conserved (PhyloP=0.857 with no splicing effect.
BA1
GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.48 is higher than 0.05.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
SMCHD1NM_015295.3 linkuse as main transcriptc.3528A>G p.Thr1176= synonymous_variant 28/48 ENST00000320876.11 NP_056110.2

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
SMCHD1ENST00000320876.11 linkuse as main transcriptc.3528A>G p.Thr1176= synonymous_variant 28/485 NM_015295.3 ENSP00000326603 P2A6NHR9-1
ENST00000583546.1 linkuse as main transcriptn.371-48836T>C intron_variant, non_coding_transcript_variant 3

Frequencies

GnomAD3 genomes
AF:
0.297
AC:
45168
AN:
151840
Hom.:
6911
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.261
Gnomad AMI
AF:
0.458
Gnomad AMR
AF:
0.359
Gnomad ASJ
AF:
0.317
Gnomad EAS
AF:
0.496
Gnomad SAS
AF:
0.448
Gnomad FIN
AF:
0.266
Gnomad MID
AF:
0.253
Gnomad NFE
AF:
0.282
Gnomad OTH
AF:
0.304
GnomAD3 exomes
AF:
0.343
AC:
82694
AN:
241024
Hom.:
15462
AF XY:
0.340
AC XY:
44464
AN XY:
130648
show subpopulations
Gnomad AFR exome
AF:
0.267
Gnomad AMR exome
AF:
0.476
Gnomad ASJ exome
AF:
0.326
Gnomad EAS exome
AF:
0.506
Gnomad SAS exome
AF:
0.447
Gnomad FIN exome
AF:
0.266
Gnomad NFE exome
AF:
0.281
Gnomad OTH exome
AF:
0.311
GnomAD4 exome
AF:
0.305
AC:
434133
AN:
1425368
Hom.:
69527
Cov.:
26
AF XY:
0.307
AC XY:
217985
AN XY:
709618
show subpopulations
Gnomad4 AFR exome
AF:
0.257
Gnomad4 AMR exome
AF:
0.460
Gnomad4 ASJ exome
AF:
0.324
Gnomad4 EAS exome
AF:
0.465
Gnomad4 SAS exome
AF:
0.441
Gnomad4 FIN exome
AF:
0.265
Gnomad4 NFE exome
AF:
0.285
Gnomad4 OTH exome
AF:
0.318
GnomAD4 genome
AF:
0.298
AC:
45216
AN:
151958
Hom.:
6927
Cov.:
32
AF XY:
0.300
AC XY:
22249
AN XY:
74272
show subpopulations
Gnomad4 AFR
AF:
0.261
Gnomad4 AMR
AF:
0.359
Gnomad4 ASJ
AF:
0.317
Gnomad4 EAS
AF:
0.496
Gnomad4 SAS
AF:
0.447
Gnomad4 FIN
AF:
0.266
Gnomad4 NFE
AF:
0.282
Gnomad4 OTH
AF:
0.307
Alfa
AF:
0.289
Hom.:
3637
Bravo
AF:
0.307
Asia WGS
AF:
0.491
AC:
1696
AN:
3452

ClinVar

Significance: Benign
Submissions summary: Benign:6
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Benign:3
Benign, criteria provided, single submitternot providedBreakthrough Genomics, Breakthrough Genomics-- -
Benign, criteria provided, single submitterclinical testingAthena DiagnosticsNov 02, 2018- -
Benign, criteria provided, single submitterclinical testingGeneDxJul 09, 2019- -
not specified Benign:1
Benign, criteria provided, single submitterclinical testingPreventionGenetics, part of Exact Sciences-- -
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
-0.57
CADD
Benign
4.5
DANN
Benign
0.75

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: rs12327477; hg19: chr18-2740714; COSMIC: COSV55252845; COSMIC: COSV55252845; API