14-77326826-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_145870.3(GSTZ1):​c.68-12G>A variant causes a splice polypyrimidine tract, intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000257 in 1,592,848 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 Affects (no stars).

Frequency

Genomes: 𝑓 0.000013 ( 0 hom., cov: 33)
Exomes 𝑓: 0.000027 ( 0 hom. )

Consequence

GSTZ1
NM_145870.3 splice_polypyrimidine_tract, intron

Scores

2
Splicing: ADA: 0.9993
2

Clinical Significance

Affects no assertion criteria provided O:1

Conservation

PhyloP100: -0.887
Variant links:
Genes affected
GSTZ1 (HGNC:4643): (glutathione S-transferase zeta 1) This gene is a member of the glutathione S-transferase (GSTs) super-family which encodes multifunctional enzymes important in the detoxification of electrophilic molecules, including carcinogens, mutagens, and several therapeutic drugs, by conjugation with glutathione. This enzyme catalyzes the conversion of maleylacetoacetate to fumarylacetoacatate, which is one of the steps in the phenylalanine/tyrosine degradation pathway. Deficiency of a similar gene in mouse causes oxidative stress. Several transcript variants of this gene encode multiple protein isoforms. [provided by RefSeq, Jul 2015]

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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;
PP3
Splicing scoreres supports a deletorius effect: Scorers claiming Pathogenic: dbscSNV1_ADA, dbscSNV1_RF, max_spliceai. No scorers claiming Uncertain. No scorers claiming Benign.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect #exon/exons MANE UniProt
GSTZ1NM_145870.3 linkuse as main transcriptc.68-12G>A splice_polypyrimidine_tract_variant, intron_variant ENST00000216465.10

Ensembl

Gene Transcript HGVSc HGVSp Effect #exon/exons TSL MANE Appris UniProt
GSTZ1ENST00000216465.10 linkuse as main transcriptc.68-12G>A splice_polypyrimidine_tract_variant, intron_variant 1 NM_145870.3

Frequencies

GnomAD3 genomes
AF:
0.0000131
AC:
2
AN:
152168
Hom.:
0
Cov.:
33
show subpopulations
Gnomad AFR
AF:
0.00
Gnomad AMI
AF:
0.00
Gnomad AMR
AF:
0.0000654
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:
0.0000131
AC:
3
AN:
229526
Hom.:
0
AF XY:
0.0000242
AC XY:
3
AN XY:
123858
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:
0.0000356
Gnomad FIN exome
AF:
0.00
Gnomad NFE exome
AF:
0.0000196
Gnomad OTH exome
AF:
0.00
GnomAD4 exome
AF:
0.0000271
AC:
39
AN:
1440680
Hom.:
0
Cov.:
27
AF XY:
0.0000321
AC XY:
23
AN XY:
715778
show subpopulations
Gnomad4 AFR exome
AF:
0.00
Gnomad4 AMR exome
AF:
0.00
Gnomad4 ASJ exome
AF:
0.00
Gnomad4 EAS exome
AF:
0.000178
Gnomad4 SAS exome
AF:
0.0000119
Gnomad4 FIN exome
AF:
0.00
Gnomad4 NFE exome
AF:
0.0000264
Gnomad4 OTH exome
AF:
0.0000168
GnomAD4 genome
AF:
0.0000131
AC:
2
AN:
152168
Hom.:
0
Cov.:
33
AF XY:
0.0000135
AC XY:
1
AN XY:
74314
show subpopulations
Gnomad4 AFR
AF:
0.00
Gnomad4 AMR
AF:
0.0000654
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
Bravo
AF:
0.0000189

ClinVar

Significance: Affects
Submissions summary: Other:1
Revision: no assertion criteria provided
LINK: link

Submissions by phenotype

Maleylacetoacetate isomerase deficiency Other:1
Affects, no assertion criteria providedliterature onlyOMIMJul 26, 2017- -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.80
CADD
Benign
17
DANN
Benign
0.74

Splicing

Name
Calibrated prediction
Score
Prediction
dbscSNV1_ADA
Pathogenic
1.0
dbscSNV1_RF
Pathogenic
0.95
SpliceAI score (max)
0.89
Details are displayed if max score is > 0.2
DS_AG_spliceai
0.88
Position offset: 2
DS_AL_spliceai
0.89
Position offset: 12

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: rs776678047; hg19: chr14-77793169; API