rs752242169

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 3P and 1B. PM2PP2BP4

The NM_001365999.1(SZT2):​c.7012C>A​(p.Arg2338Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000374 in 1,605,358 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/19 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)
Exomes 𝑓: 0.0000034 ( 0 hom. )

Consequence

SZT2
NM_001365999.1 missense

Scores

3
15

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.285
Variant links:
Genes affected
SZT2 (HGNC:29040): (SZT2 subunit of KICSTOR complex) The protein encoded by this gene is expressed in the brain, predominantly in the parietal and frontal cortex as well as in dorsal root ganglia. It is localized to the peroxisome, and is implicated in resistance to oxidative stress. It likely functions by increasing superoxide dismutase (SOD) activity, but itself has no direct SOD activity. Studies in mice show that this gene confers low seizure threshold, and may also enhance epileptogenesis. [provided by RefSeq, Jun 2011]

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2
Very rare variant in population databases, with high coverage;
PP2
Missense variant in gene, where missense usually causes diseases (based on misZ statistic), SZT2. . Gene score misZ 2.5968 (greater than the threshold 3.09). Trascript score misZ 4.0086 (greater than threshold 3.09). GenCC has associacion of gene with undetermined early-onset epileptic encephalopathy, developmental and epileptic encephalopathy, 18, developmental and epileptic encephalopathy.
BP4
Computational evidence support a benign effect (MetaRNN=0.354609).

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE Protein UniProt
SZT2NM_001365999.1 linkuse as main transcriptc.7012C>A p.Arg2338Ser missense_variant 50/72 ENST00000634258.3 NP_001352928.1
SZT2NM_015284.4 linkuse as main transcriptc.6841C>A p.Arg2281Ser missense_variant 49/71 NP_056099.3

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Protein Appris UniProt
SZT2ENST00000634258.3 linkuse as main transcriptc.7012C>A p.Arg2338Ser missense_variant 50/725 NM_001365999.1 ENSP00000489255 P1Q5T011-1
SZT2ENST00000562955.2 linkuse as main transcriptc.6841C>A p.Arg2281Ser missense_variant 49/715 ENSP00000457168 Q5T011-5
SZT2ENST00000648058.1 linkuse as main transcriptn.3466C>A non_coding_transcript_exon_variant 18/40
SZT2ENST00000649403.1 linkuse as main transcriptn.1762C>A non_coding_transcript_exon_variant 15/37

Frequencies

GnomAD3 genomes
AF:
0.00000657
AC:
1
AN:
152160
Hom.:
0
Cov.:
33
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:
0.00
Gnomad OTH
AF:
0.00
GnomAD3 exomes
AF:
0.00000821
AC:
2
AN:
243720
Hom.:
0
AF XY:
0.00
AC XY:
0
AN XY:
131576
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:
0.0000182
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.00000344
AC:
5
AN:
1453198
Hom.:
0
Cov.:
33
AF XY:
0.00000138
AC XY:
1
AN XY:
722174
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.00
Gnomad4 SAS exome
AF:
0.00
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.00000452
Gnomad4 OTH exome
AF:
0.00
GnomAD4 genome
AF:
0.00000657
AC:
1
AN:
152160
Hom.:
0
Cov.:
33
AF XY:
0.00
AC XY:
0
AN XY:
74328
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:
0.00
Gnomad4 OTH
AF:
0.00
Bravo
AF:
0.00000378
ExAC
AF:
0.00000824
AC:
1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
0.28
BayesDel_addAF
Uncertain
0.11
D
BayesDel_noAF
Benign
-0.090
CADD
Benign
22
DANN
Uncertain
0.99
DEOGEN2
Benign
0.083
T;.
Eigen
Benign
-0.058
Eigen_PC
Benign
0.071
FATHMM_MKL
Benign
0.71
D
LIST_S2
Benign
0.80
T;T
M_CAP
Benign
0.0067
T
MetaRNN
Benign
0.35
T;T
MetaSVM
Benign
-1.1
T
MutationAssessor
Benign
1.4
L;.
MutationTaster
Benign
1.0
N;N
PrimateAI
Benign
0.31
T
PROVEAN
Benign
-1.4
.;N
Sift
Benign
0.28
.;T
Sift4G
Uncertain
0.0060
D;D
Polyphen
0.60
.;P
Vest4
0.55
MutPred
0.41
.;Gain of glycosylation at R2281 (P = 0.0142);
MVP
0.32
MPC
0.34
ClinPred
0.35
T
GERP RS
3.8
RBP_binding_hub_radar
0.0
RBP_regulation_power_radar
1.7
Varity_R
0.21
gMVP
0.45

Splicing

Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
0.090
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: rs752242169; hg19: chr1-43905410; API