2-190910319-A-C

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 0P and 2B. BP4BS1_Supporting

The NM_014905.5(GLS):c.1036A>C(p.Lys346Gln) variant causes a missense, splice region change. The variant allele was found at a frequency of 0.000226 in 1,558,422 control chromosomes in the GnomAD database, including 1 homozygotes. In-silico tool predicts a benign outcome for this variant. 2/3 splice prediction tools predict no significant impact on normal splicing. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. K346R) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.00013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00024 ( 1 hom. )

Consequence

GLS
NM_014905.5 missense, splice_region

Scores

Splicing: ADA: 0.7487

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.75

Variant links:

Genes affected

GLS (HGNC:4331): (glutaminase) This gene encodes the K-type mitochondrial glutaminase. The encoded protein is an phosphate-activated amidohydrolase that catalyzes the hydrolysis of glutamine to glutamate and ammonia. This protein is primarily expressed in the brain and kidney plays an essential role in generating energy for metabolism, synthesizing the brain neurotransmitter glutamate and maintaining acid-base balance in the kidney. Alternate splicing results in multiple transcript variants. [provided by RefSeq, Jan 2012]

GLS links:

STAT1 (HGNC:11362): (signal transducer and activator of transcription 1) The protein encoded by this gene is a member of the STAT protein family. In response to cytokines and growth factors, STAT family members are phosphorylated by the receptor associated kinases, and then form homo- or heterodimers that translocate to the cell nucleus where they act as transcription activators. The protein encoded by this gene can be activated by various ligands including interferon-alpha, interferon-gamma, EGF, PDGF and IL6. This protein mediates the expression of a variety of genes, which is thought to be important for cell viability in response to different cell stimuli and pathogens. The protein plays an important role in immune responses to viral, fungal and mycobacterial pathogens. Mutations in this gene are associated with Immunodeficiency 31B, 31A, and 31C. [provided by RefSeq, Jun 2020]

STAT1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.2991917).

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.000131 (20/152162) while in subpopulation NFE AF= 0.000206 (14/68010). AF 95% confidence interval is 0.000124. There are 0 homozygotes in gnomad4. There are 9 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
GLS	NM_014905.5 linkuse as main transcript	c.1036A>C	p.Lys346Gln	missense_variant, splice_region_variant	7/18	ENST00000320717.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
GLS	ENST00000320717.8 linkuse as main transcript	c.1036A>C	p.Lys346Gln	missense_variant, splice_region_variant	7/18	1	NM_014905.5	P1	O94925-1

Frequencies

GnomAD3 genomes

AF:

0.000131

AC:

AN:

152162

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000121

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:

0.0000945

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000206

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000120

AC:

AN:

242376

Hom.:

AF XY:

0.000107

AC XY:

AN XY:

131212

show subpopulations

Gnomad AFR exome

AF:

0.0000640

Gnomad AMR exome

AF:

0.0000307

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000689

Gnomad FIN exome

AF:

0.0000467

Gnomad NFE exome

AF:

0.000209

Gnomad OTH exome

AF:

0.000169

GnomAD4 exome

AF:

0.000236

AC:

332

AN:

1406260

Hom.:

Cov.:

AF XY:

0.000217

AC XY:

152

AN XY:

701922

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.0000233

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000243

Gnomad4 FIN exome

AF:

0.0000567

Gnomad4 NFE exome

AF:

0.000296

Gnomad4 OTH exome

AF:

0.000171

GnomAD4 genome

AF:

0.000131

AC:

AN:

152162

Hom.:

Cov.:

AF XY:

0.000121

AC XY:

AN XY:

74328

show subpopulations

Gnomad4 AFR

AF:

0.000121

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.0000945

Gnomad4 NFE

AF:

0.000206

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000191

Hom.:

Bravo

AF:

0.000106

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.000227

AC:

ESP6500EA

AF:

0.000233

AC:

ExAC

AF:

0.0000824

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

Inborn genetic diseases

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Sep 30, 2021

The c.1036A>C (p.K346Q) alteration is located in exon 7 (coding exon 7) of the GLS gene. This alteration results from a A to C substitution at nucleotide position 1036, causing the lysine (K) at amino acid position 346 to be replaced by a glutamine (Q). 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

Benign

0.17

BayesDel_addAF

Benign

-0.15

BayesDel_noAF

Benign

-0.17

Cadd

Pathogenic

Dann

Uncertain

0.99

DEOGEN2

Benign

0.34

T;.

Eigen

Benign

0.17

Eigen_PC

Uncertain

0.31

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.93

D;D

M_CAP

Benign

0.011

MetaRNN

Benign

0.30

T;T

MetaSVM

Benign

-1.0

MutationAssessor

Benign

1.4

L;L

MutationTaster

Benign

1.0

D;D

PrimateAI

Pathogenic

0.80

PROVEAN

Uncertain

-3.4

D;D

REVEL

Benign

0.19

Sift

Benign

0.032

D;D

Sift4G

Benign

0.063

T;T

Polyphen

0.23

B;B

Vest4

0.38

MVP

0.79

MPC

1.6

ClinPred

0.083

GERP RS

5.3

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

2.8

Varity_R

0.71

gMVP

0.87

Splicing

Name

Calibrated prediction

Score

Prediction

dbscSNV1_ADA

Benign

0.75

dbscSNV1_RF

Pathogenic

0.74

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

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over