Variant 1-43435201-G-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP2

The NM_001365999.1(SZT2):c.5906G>T(p.Arg1969Leu) variant causes a missense, splice region change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000274 in 1,461,738 control chromosomes in the GnomAD database, with no homozygous occurrence. 2/3 splice prediction tools predicting alterations to normal splicing. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R1969Q) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000027 ( 0 hom. )

Consequence

SZT2
NM_001365999.1 missense, splice_region

Scores

Splicing: ADA: 0.9720

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 9.63

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]

SZT2 links:

SZT2 (HGNC:):

SZT2 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 3 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.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
SZT2	NM_001365999.1 linkuse as main transcript	c.5906G>T	p.Arg1969Leu	missense_variant, splice_region_variant	42/72	ENST00000634258.3	NP_001352928.1
SZT2	NM_015284.4 linkuse as main transcript	c.5735G>T	p.Arg1912Leu	missense_variant, splice_region_variant	41/71		NP_056099.3	Q5T011-5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
SZT2	ENST00000634258.3 linkuse as main transcript	c.5906G>T	p.Arg1969Leu	missense_variant, splice_region_variant	42/72	5	NM_001365999.1	ENSP00000489255.1	Q5T011-1
SZT2	ENST00000562955.2 linkuse as main transcript	c.5735G>T	p.Arg1912Leu	missense_variant, splice_region_variant	41/71	5		ENSP00000457168.1	Q5T011-5
SZT2	ENST00000648058.1 linkuse as main transcript	n.2360G>T		splice_region_variant, non_coding_transcript_exon_variant	10/40
SZT2	ENST00000649403.1 linkuse as main transcript	n.656G>T		splice_region_variant, non_coding_transcript_exon_variant	7/37

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251230

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135766

show subpopulations

Gnomad AFR exome

AF:

0.0000615

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:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000274

AC:

AN:

1461738

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

727160

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

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:

0.0000374

Gnomad4 NFE exome

AF:

8.99e-7

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.00000824

AC:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Uncertain

0.47

BayesDel_addAF

Uncertain

0.072

BayesDel_noAF

Uncertain

0.050

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.40

T;.

Eigen

Pathogenic

0.76

Eigen_PC

Pathogenic

0.79

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.94

D;D

M_CAP

Benign

0.0057

MetaRNN

Uncertain

0.70

D;D

MetaSVM

Benign

-0.58

MutationAssessor

Benign

1.9

L;.

PrimateAI

Pathogenic

0.90

PROVEAN

Uncertain

-2.9

.;D

Sift

Benign

0.36

.;T

Sift4G

Pathogenic

0.0

D;D

Polyphen

1.0

.;D

Vest4

0.78

MutPred

0.52

.;Loss of MoRF binding (P = 0.0757);

MVP

0.49

MPC

1.0

ClinPred

0.80

GERP RS

5.7

Varity_R

0.37

gMVP

0.60

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Pathogenic

0.97

dbscSNV1_RF

Pathogenic

0.82

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.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Computational scores

Splicing

Publications

LitVar

Other links and lift over