rs1801893

Variant names:

• chr2-190931603-A-C
• rs1801893
• NM_014905.5:c.1616A>C

Variant summary

Our verdict is Uncertain significance. The variant received 3 ACMG points: 3P and 0B. PM2 PP3

The NM_014905.5(GLS):​c.1616A>C​(p.Lys539Thr) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: GLS NM_014905.5 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.49
• Publications: 0 publications found

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]

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)

ACMG classification

Our verdict: Uncertain_significance. The variant received 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.792

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_014905.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GLS	NM_014905.5	MANE Select	c.1616A>C	p.Lys539Thr	missense	Exon 14 of 18	NP_055720.3
	GLS	NM_001437282.1		c.1616A>C	p.Lys539Thr	missense	Exon 14 of 17	NP_001424211.1
	GLS	NM_001256310.2		c.1616A>C	p.Lys539Thr	missense	Exon 14 of 15	NP_001243239.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	GLS	ENST00000320717.8	TSL:1 MANE Select	c.1616A>C	p.Lys539Thr	missense	Exon 14 of 18	ENSP00000317379.3
	GLS	ENST00000338435.9	TSL:1	c.1616A>C	p.Lys539Thr	missense	Exon 14 of 15	ENSP00000340689.4
	GLS	ENST00000950145.1		c.1616A>C	p.Lys539Thr	missense	Exon 14 of 19	ENSP00000620204.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 24

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.99
BayesDel_addAF	Pathogenic	0.24	D
BayesDel_noAF	Uncertain	0.10
CADD	Pathogenic	29
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.53	D
Eigen	Pathogenic	0.85
Eigen_PC	Pathogenic	0.81
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Pathogenic	1.0	D
M_CAP	Benign	0.045	D
MetaRNN	Pathogenic	0.79	D
MetaSVM	Uncertain	-0.15	T
MutationAssessor	Pathogenic	3.1	M
PhyloP100		7.5
PrimateAI	Pathogenic	0.89	D
PROVEAN	Pathogenic	-5.8	D
REVEL	Uncertain	0.63
Sift	Uncertain	0.0030	D
Sift4G	Uncertain	0.016	D
Polyphen		0.99	D
Vest4		0.77
MutPred		0.43		Loss of ubiquitination at K539 (P = 0.0141)
MVP		0.75
MPC		3.1
ClinPred		0.99	D
GERP RS		5.7
Varity_R		0.90
gMVP		0.95
Mutation Taster		=9/91	disease causing

Splicing

Name	Calibrated prediction	Score	Prediction
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

Other links and lift over

dbSNP: rs1801893; hg19: chr2-191796329;