rs112727682

Variant summary

Our verdict is Benign. Variant got -13 ACMG points: 0P and 13B. BP4_StrongBP6BS1BS2

The NM_006306.4(SMC1A):​c.*14C>T variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00565 in 1,168,433 control chromosomes in the GnomAD database, including 10 homozygotes. There are 1,986 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

Frequency

Genomes: 𝑓 0.0043 ( 1 hom., 133 hem., cov: 22)
Exomes 𝑓: 0.0058 ( 9 hom. 1853 hem. )

Consequence

SMC1A
NM_006306.4 3_prime_UTR

Scores

2

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:1B:2

Conservation

PhyloP100: 0.679
Variant links:
Genes affected
SMC1A (HGNC:11111): (structural maintenance of chromosomes 1A) Proper cohesion of sister chromatids is a prerequisite for the correct segregation of chromosomes during cell division. The cohesin multiprotein complex is required for sister chromatid cohesion. This complex is composed partly of two structural maintenance of chromosomes (SMC) proteins, SMC3 and either SMC1B or the protein encoded by this gene. Most of the cohesin complexes dissociate from the chromosomes before mitosis, although those complexes at the kinetochore remain. Therefore, the encoded protein is thought to be an important part of functional kinetochores. In addition, this protein interacts with BRCA1 and is phosphorylated by ATM, indicating a potential role for this protein in DNA repair. This gene, which belongs to the SMC gene family, is located in an area of the X-chromosome that escapes X inactivation. Mutations in this gene result in Cornelia de Lange syndrome. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jul 2013]

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -13 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.83).
BP6
Variant X-53380089-G-A is Benign according to our data. Variant chrX-53380089-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 159937.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=1, Benign=1, Uncertain_significance=1}.
BS1
Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.00434 (482/111102) while in subpopulation NFE AF= 0.00742 (393/52982). AF 95% confidence interval is 0.00681. There are 1 homozygotes in gnomad4. There are 133 alleles in male gnomad4 subpopulation. Median coverage is 22. This position pass quality control queck.
BS2
High Hemizygotes in GnomAd4 at 133 XL gene

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
SMC1ANM_006306.4 linkc.*14C>T 3_prime_UTR_variant Exon 25 of 25 ENST00000322213.9 NP_006297.2 Q14683A0A384MR33Q68EN4
SMC1ANM_001281463.1 linkc.*14C>T 3_prime_UTR_variant Exon 26 of 26 NP_001268392.1 G8JLG1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
SMC1AENST00000322213 linkc.*14C>T 3_prime_UTR_variant Exon 25 of 25 1 NM_006306.4 ENSP00000323421.3 Q14683
SMC1AENST00000375340 linkc.*14C>T 3_prime_UTR_variant Exon 26 of 26 1 ENSP00000364489.7 G8JLG1
SMC1AENST00000675504 linkc.*14C>T 3_prime_UTR_variant Exon 25 of 25 ENSP00000502524.1 G8JLG1
SMC1AENST00000674590 linkc.*14C>T 3_prime_UTR_variant Exon 23 of 23 ENSP00000502626.1 A0A6Q8PHC3

Frequencies

GnomAD3 genomes
AF:
0.00435
AC:
483
AN:
111049
Hom.:
1
Cov.:
22
AF XY:
0.00400
AC XY:
133
AN XY:
33259
show subpopulations
Gnomad AFR
AF:
0.000886
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.00279
Gnomad ASJ
AF:
0.00113
Gnomad EAS
AF:
0.00
Gnomad SAS
AF:
0.000768
Gnomad FIN
AF:
0.00318
Gnomad MID
AF:
0.00840
Gnomad NFE
AF:
0.00742
Gnomad OTH
AF:
0.00534
GnomAD3 exomes
AF:
0.00429
AC:
767
AN:
178732
Hom.:
5
AF XY:
0.00436
AC XY:
281
AN XY:
64380
show subpopulations
Gnomad AFR exome
AF:
0.000778
Gnomad AMR exome
AF:
0.00284
Gnomad ASJ exome
AF:
0.00111
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00144
Gnomad FIN exome
AF:
0.00241
Gnomad NFE exome
AF:
0.00735
Gnomad OTH exome
AF:
0.00527
GnomAD4 exome
AF:
0.00578
AC:
6116
AN:
1057331
Hom.:
9
Cov.:
26
AF XY:
0.00560
AC XY:
1853
AN XY:
330919
show subpopulations
Gnomad4 AFR exome
AF:
0.000780
Gnomad4 AMR exome
AF:
0.00325
Gnomad4 ASJ exome
AF:
0.000897
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00154
Gnomad4 FIN exome
AF:
0.00408
Gnomad4 NFE exome
AF:
0.00671
Gnomad4 OTH exome
AF:
0.00568
GnomAD4 genome
AF:
0.00434
AC:
482
AN:
111102
Hom.:
1
Cov.:
22
AF XY:
0.00399
AC XY:
133
AN XY:
33322
show subpopulations
Gnomad4 AFR
AF:
0.000884
Gnomad4 AMR
AF:
0.00278
Gnomad4 ASJ
AF:
0.00113
Gnomad4 EAS
AF:
0.00
Gnomad4 SAS
AF:
0.000770
Gnomad4 FIN
AF:
0.00318
Gnomad4 NFE
AF:
0.00742
Gnomad4 OTH
AF:
0.00528
Alfa
AF:
0.00463
Hom.:
52
Bravo
AF:
0.00452

ClinVar

Significance: Conflicting classifications of pathogenicity
Submissions summary: Uncertain:1Benign:2
Revision: criteria provided, conflicting classifications
LINK: link

Submissions by phenotype

History of neurodevelopmental disorder Uncertain:1
Jan 10, 2013
Ambry Genetics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

There is insufficient or conflicting evidence for classification of this alteration. -

not specified Benign:1
Feb 08, 2013
Genetic Services Laboratory, University of Chicago
Significance: Benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

De Lange syndrome Benign:1
Jun 14, 2016
Illumina Laboratory Services, Illumina
Significance: Likely benign
Review Status: criteria provided, single submitter
Collection Method: clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.83
CADD
Benign
1.7
DANN
Benign
0.70
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
2.2

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: rs112727682; hg19: chrX-53407010; API