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GeneBe

22-45352609-C-T

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_ModerateBP6_ModerateBS2

The NM_148674.5(SMC1B):c.3274-7G>A variant causes a splice region, splice polypyrimidine tract, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000151 in 1,586,484 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 3/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.00011 ( 0 hom., cov: 32)
Exomes 𝑓: 0.00015 ( 0 hom. )

Consequence

SMC1B
NM_148674.5 splice_region, splice_polypyrimidine_tract, intron

Scores

2
Splicing: ADA: 0.004744
2

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -0.194
Variant links:
Genes affected
SMC1B (HGNC:11112): (structural maintenance of chromosomes 1B) SMC1L2 belongs to a family of proteins required for chromatid cohesion and DNA recombination during meiosis and mitosis (3:Revenkova et al., 2001 [PubMed 11564881]).[supplied by OMIM, Mar 2008]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.33).
BP6
Variant 22-45352609-C-T is Benign according to our data. Variant chr22-45352609-C-T is described in ClinVar as [Likely_benign]. Clinvar id is 732420.Status of the report is criteria_provided_single_submitter, 1 stars.
BS2
High AC in GnomAd at 17 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
SMC1BNM_148674.5 linkuse as main transcriptc.3274-7G>A splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant ENST00000357450.9

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
SMC1BENST00000357450.9 linkuse as main transcriptc.3274-7G>A splice_region_variant, splice_polypyrimidine_tract_variant, intron_variant 5 NM_148674.5 P1
SMC1BENST00000404354.3 linkuse as main transcriptc.3273+1369G>A intron_variant 1

Frequencies

GnomAD3 genomes
AF:
0.000112
AC:
17
AN:
152158
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.0000241
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:
0.000235
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.000154
AC:
36
AN:
233656
Hom.:
0
AF XY:
0.000157
AC XY:
20
AN XY:
127252
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.0000690
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.0000580
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.000304
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.000155
AC:
222
AN:
1434326
Hom.:
0
Cov.:
32
AF XY:
0.000152
AC XY:
108
AN XY:
712142
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.0000754
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.0000763
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.000192
Gnomad4 OTH exome
AF:
0.0000677
GnomAD4 genome
AF:
0.000112
AC:
17
AN:
152158
Hom.:
0
Cov.:
32
AF XY:
0.0000538
AC XY:
4
AN XY:
74330
show subpopulations
Gnomad4 AFR
AF:
0.0000241
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:
0.000235
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.000147
Hom.:
0
Bravo
AF:
0.000162

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 testingInvitaeDec 31, 2019- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.33
Cadd
Benign
14
Dann
Benign
0.54

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Benign
0.0047
dbscSNV1_RF
Benign
0.10
SpliceAI score (max)
0.010
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: rs371921978; hg19: chr22-45748489; COSMIC: COSV62531756; API