2-190910319-A-C

Variant names:

Variant summary

Our verdict is Likely benign. The variant received -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

Publications

1 publications found

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 Gene-Disease associations (from GenCC):

autoimmune enteropathy and endocrinopathy - susceptibility to chronic infections syndrome
Inheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Labcorp Genetics (formerly Invitae), Illumina, Orphanet
immunodeficiency 31B
Inheritance: AR Classification: DEFINITIVE, STRONG, SUPPORTIVE, LIMITED Submitted by: G2P, Ambry Genetics, Labcorp Genetics (formerly Invitae), Orphanet
Mendelian susceptibility to mycobacterial diseases due to partial STAT1 deficiency
Inheritance: AD Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet, Labcorp Genetics (formerly Invitae)

STAT1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -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 the male GnomAd4 subpopulation. Median coverage is 32. This position passed quality control check. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
GLS	NM_014905.5 link	c.1036A>C	p.Lys346Gln	missense_variant, splice_region_variant	Exon 7 of 18	ENST00000320717.8	NP_055720.3	O94925-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
GLS	ENST00000320717.8 link	c.1036A>C	p.Lys346Gln	missense_variant, splice_region_variant	Exon 7 of 18	1	NM_014905.5	ENSP00000317379.3		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

GnomAD2 exomes

AF:

0.000120

AC:

AN:

242376

AF XY:

0.000107

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 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

African (AFR)

AF:

0.00

AC:

AN:

32092

American (AMR)

AF:

0.0000233

AC:

AN:

42996

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25460

East Asian (EAS)

AF:

0.00

AC:

AN:

39050

South Asian (SAS)

AF:

0.0000243

AC:

AN:

82406

European-Finnish (FIN)

AF:

0.0000567

AC:

AN:

52928

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5662

European-Non Finnish (NFE)

AF:

0.000296

AC:

316

AN:

1067244

Other (OTH)

AF:

0.000171

AC:

AN:

58422

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.463

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.000131

AC:

AN:

152162

Hom.:

Cov.:

AF XY:

0.000121

AC XY:

AN XY:

74328

show subpopulations

African (AFR)

AF:

0.000121

AC:

AN:

41460

American (AMR)

AF:

0.00

AC:

AN:

15286

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5200

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.0000945

AC:

AN:

10584

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.000206

AC:

AN:

68010

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.470

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.000172

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

Sep 30, 2021

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

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

(source)

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

PhyloP100

6.8

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

Mutation Taster

=36/64

disease causing

(source)

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

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2-190910319-A-C

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over