rs2271336

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_014140.4(SMARCAL1):​c.2225C>T​(p.Thr742Met) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000443 in 1,612,200 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★). Synonymous variant affecting the same amino acid position (i.e. T742T) has been classified as Likely benign.

Frequency

Genomes: 𝑓 0.00029 ( 0 hom., cov: 32)
Exomes 𝑓: 0.00046 ( 1 hom. )

Consequence

SMARCAL1
NM_014140.4 missense

Scores

18

Clinical Significance

Uncertain significance criteria provided, multiple submitters, no conflicts U:5

Conservation

PhyloP100: 0.685

Publications

10 publications found
Variant links:
Genes affected
SMARCAL1 (HGNC:11102): (SWI/SNF related, matrix associated, actin dependent regulator of chromatin, subfamily a like 1) The protein encoded by this gene is a member of the SWI/SNF family of proteins. Members of this family have helicase and ATPase activities and are thought to regulate transcription of certain genes by altering the chromatin structure around those genes. The encoded protein shows sequence similarity to the E. coli RNA polymerase-binding protein HepA. Mutations in this gene are a cause of Schimke immunoosseous dysplasia (SIOD), an autosomal recessive disorder with the diagnostic features of spondyloepiphyseal dysplasia, renal dysfunction, and T-cell immunodeficiency. [provided by RefSeq, Jul 2008]
SMARCAL1 Gene-Disease associations (from GenCC):
  • Schimke immuno-osseous dysplasia
    Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: ClinGen, PanelApp Australia, Orphanet, G2P, Labcorp Genetics (formerly Invitae)

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -4 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.04995656).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_014140.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
SMARCAL1
NM_014140.4
MANE Select
c.2225C>Tp.Thr742Met
missense
Exon 14 of 18NP_054859.2
SMARCAL1
NM_001127207.2
c.2225C>Tp.Thr742Met
missense
Exon 14 of 18NP_001120679.1Q9NZC9

Ensembl Transcripts

Sel.
GeneTranscriptTagsHGVScHGVSpEffectExon RankProteinUniProt
SMARCAL1
ENST00000357276.9
TSL:2 MANE Select
c.2225C>Tp.Thr742Met
missense
Exon 14 of 18ENSP00000349823.4Q9NZC9
SMARCAL1
ENST00000358207.9
TSL:1
c.2225C>Tp.Thr742Met
missense
Exon 14 of 18ENSP00000350940.5Q9NZC9
SMARCAL1
ENST00000392128.6
TSL:1
c.1751C>Tp.Thr584Met
missense
Exon 11 of 15ENSP00000375974.2H7BYI2

Frequencies

GnomAD3 genomes
AF:
0.000289
AC:
44
AN:
152182
Hom.:
0
Cov.:
32
show subpopulations
Gnomad AFR
AF:
0.000169
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000655
Gnomad ASJ
AF:
0.00
Gnomad EAS
AF:
0.000578
Gnomad SAS
AF:
0.00
Gnomad FIN
AF:
0.0000942
Gnomad MID
AF:
0.00
Gnomad NFE
AF:
0.000470
Gnomad OTH
AF:
0.00
GnomAD2 exomes
AF:
0.000207
AC:
52
AN:
251390
AF XY:
0.000199
show subpopulations
Gnomad AFR exome
AF:
0.0000615
Gnomad AMR exome
AF:
0.0000867
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.000109
Gnomad FIN exome
AF:
0.0000462
Gnomad NFE exome
AF:
0.000387
Gnomad OTH exome
AF:
0.000163
GnomAD4 exome
AF:
0.000460
AC:
671
AN:
1459900
Hom.:
1
Cov.:
30
AF XY:
0.000445
AC XY:
323
AN XY:
726360
show subpopulations
African (AFR)
AF:
0.000149
AC:
5
AN:
33450
American (AMR)
AF:
0.000112
AC:
5
AN:
44712
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
26110
East Asian (EAS)
AF:
0.00101
AC:
40
AN:
39644
South Asian (SAS)
AF:
0.0000116
AC:
1
AN:
86234
European-Finnish (FIN)
AF:
0.0000753
AC:
4
AN:
53150
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
5764
European-Non Finnish (NFE)
AF:
0.000537
AC:
596
AN:
1110526
Other (OTH)
AF:
0.000332
AC:
20
AN:
60310
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.459
Heterozygous variant carriers
0
31
61
92
122
153
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Exome Het
Exome Hom
Variant carriers
0
26
52
78
104
130
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
GnomAD4 genome
AF:
0.000289
AC:
44
AN:
152300
Hom.:
0
Cov.:
32
AF XY:
0.000255
AC XY:
19
AN XY:
74478
show subpopulations
African (AFR)
AF:
0.000168
AC:
7
AN:
41582
American (AMR)
AF:
0.0000654
AC:
1
AN:
15288
Ashkenazi Jewish (ASJ)
AF:
0.00
AC:
0
AN:
3470
East Asian (EAS)
AF:
0.000579
AC:
3
AN:
5182
South Asian (SAS)
AF:
0.00
AC:
0
AN:
4828
European-Finnish (FIN)
AF:
0.0000942
AC:
1
AN:
10616
Middle Eastern (MID)
AF:
0.00
AC:
0
AN:
294
European-Non Finnish (NFE)
AF:
0.000470
AC:
32
AN:
68014
Other (OTH)
AF:
0.00
AC:
0
AN:
2114
Allele Balance Distribution
Red line indicates average allele balance
Average allele balance: 0.508
Heterozygous variant carriers
0
3
6
9
12
15
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance

Age Distribution

Genome Het
Variant carriers
0
2
4
6
8
10
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.000453
Hom.:
0
Bravo
AF:
0.000246
TwinsUK
AF:
0.000270
AC:
1
ALSPAC
AF:
0.000259
AC:
1
ESP6500AA
AF:
0.00
AC:
0
ESP6500EA
AF:
0.000116
AC:
1
ExAC
AF:
0.000272
AC:
33
EpiCase
AF:
0.000327
EpiControl
AF:
0.000237

ClinVar

ClinVar submissions
Significance:Uncertain significance
Revision:criteria provided, multiple submitters, no conflicts
View on ClinVar
Pathogenic
VUS
Benign
Condition
-
4
-
Schimke immuno-osseous dysplasia (4)
-
1
-
Kidney disorder (1)

Computational scores

Source: dbNSFP v4.9

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.10
BayesDel_addAF
Benign
-0.29
T
BayesDel_noAF
Benign
-0.34
CADD
Benign
18
DANN
Benign
0.90
DEOGEN2
Benign
0.23
T
Eigen
Benign
-0.96
Eigen_PC
Benign
-0.90
FATHMM_MKL
Benign
0.20
N
LIST_S2
Benign
0.80
T
M_CAP
Benign
0.042
D
MetaRNN
Benign
0.050
T
MetaSVM
Benign
-0.86
T
MutationAssessor
Benign
0.74
N
PhyloP100
0.69
PrimateAI
Benign
0.34
T
PROVEAN
Benign
-1.8
N
REVEL
Benign
0.12
Sift
Benign
0.075
T
Sift4G
Benign
0.17
T
Polyphen
0.017
B
Vest4
0.14
MVP
0.69
MPC
0.24
ClinPred
0.030
T
GERP RS
3.0
Varity_R
0.034
gMVP
0.37
Mutation Taster
=92/8
polymorphism

Splicing

Name
Calibrated prediction
Score
Prediction
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

Other links and lift over

dbSNP: rs2271336; hg19: chr2-217332750; COSMIC: COSV61920709; API