12-53382365-C-T

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_138473.3(SP1):​c.418C>T​(p.Arg140Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000062 in 1,614,100 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 32)
Exomes 𝑓: 0.0000055 ( 0 hom. )

Consequence

SP1
NM_138473.3 missense

Scores

7
12

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.34
Variant links:
Genes affected
SP1 (HGNC:11205): (Sp1 transcription factor) The protein encoded by this gene is a zinc finger transcription factor that binds to GC-rich motifs of many promoters. The encoded protein is involved in many cellular processes, including cell differentiation, cell growth, apoptosis, immune responses, response to DNA damage, and chromatin remodeling. Post-translational modifications such as phosphorylation, acetylation, glycosylation, and proteolytic processing significantly affect the activity of this protein, which can be an activator or a repressor. Three transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, Nov 2014]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -6 ACMG points.

BP4
Computational evidence support a benign effect (MetaRNN=0.17311525).
BS2
High AC in GnomAdExome4 at 8 AD gene.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
SP1NM_138473.3 linkc.418C>T p.Arg140Cys missense_variant Exon 3 of 6 ENST00000327443.9 NP_612482.2 P08047-1
SP1NM_003109.1 linkc.397C>T p.Arg133Cys missense_variant Exon 3 of 6 NP_003100.1 P08047-2
SP1NM_001251825.2 linkc.274C>T p.Arg92Cys missense_variant Exon 3 of 6 NP_001238754.1 P08047-3

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
SP1ENST00000327443.9 linkc.418C>T p.Arg140Cys missense_variant Exon 3 of 6 1 NM_138473.3 ENSP00000329357.4 P08047-1
SP1ENST00000426431.2 linkc.397C>T p.Arg133Cys missense_variant Exon 3 of 6 1 ENSP00000404263.2 P08047-2
SP1ENST00000548560.1 linkc.397C>T p.Arg133Cys missense_variant Exon 2 of 2 2 ENSP00000458133.1 H3BVI2
SP1ENST00000551969.5 linkc.274C>T p.Arg92Cys missense_variant Exon 3 of 3 3 ENSP00000457804.1 H3BUU5

Frequencies

GnomAD3 genomes
AF:
0.0000131
AC:
2
AN:
152210
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:
0.0000147
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.00000398
AC:
1
AN:
251412
Hom.:
0
AF XY:
0.00
AC XY:
0
AN XY:
135882
show subpopulations
Gnomad AFR exome
AF:
0.00
Gnomad AMR exome
AF:
0.00
Gnomad ASJ exome
AF:
0.00
Gnomad EAS exome
AF:
0.00
Gnomad SAS exome
AF:
0.00
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.00000879
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000547
AC:
8
AN:
1461890
Hom.:
0
Cov.:
33
AF XY:
0.00000550
AC XY:
4
AN XY:
727248
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.000126
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000270
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.0000131
AC:
2
AN:
152210
Hom.:
0
Cov.:
32
AF XY:
0.0000134
AC XY:
1
AN XY:
74358
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:
0.0000147
Gnomad4 OTH
AF:
0.00
Alfa
AF:
0.0000329
Hom.:
0
Bravo
AF:
0.00000378
EpiCase
AF:
0.00
EpiControl
AF:
0.0000593

ClinVar

Significance: Uncertain significance
Submissions summary: Uncertain:1
Revision: criteria provided, single submitter
LINK: link

Submissions by phenotype

not specified Uncertain:1
Mar 01, 2025
Ambry Genetics
Significance: Uncertain significance
Review Status: criteria provided, single submitter
Collection Method: clinical testing

The c.418C>T (p.R140C) alteration is located in exon 3 (coding exon 3) of the SP1 gene. This alteration results from a C to T substitution at nucleotide position 418, causing the arginine (R) at amino acid position 140 to be replaced by a cysteine (C). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Uncertain
0.36
BayesDel_addAF
Benign
-0.10
T
BayesDel_noAF
Benign
-0.39
CADD
Pathogenic
26
DANN
Uncertain
0.99
DEOGEN2
Benign
0.36
T;D;.;.
Eigen
Benign
-0.049
Eigen_PC
Benign
0.093
FATHMM_MKL
Uncertain
0.85
D
LIST_S2
Uncertain
0.91
D;D;D;D
M_CAP
Benign
0.015
T
MetaRNN
Benign
0.17
T;T;T;T
MetaSVM
Benign
-1.1
T
MutationAssessor
Benign
1.8
.;L;.;.
PrimateAI
Uncertain
0.70
T
PROVEAN
Benign
-1.6
N;N;N;N
REVEL
Benign
0.12
Sift
Uncertain
0.0020
D;D;D;D
Sift4G
Uncertain
0.050
T;D;D;D
Polyphen
0.065
.;B;.;.
Vest4
0.71, 0.70
MutPred
0.33
.;Gain of catalytic residue at V142 (P = 0.0026);.;.;
MVP
0.51
MPC
0.39
ClinPred
0.70
D
GERP RS
4.1
Varity_R
0.21
gMVP
0.23

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: rs1481857456; hg19: chr12-53776149; API