19-1089545-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2 PP3_Moderate

The NM_002695.5(POLR2E):c.574A>G(p.Lys192Glu) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. 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. K192M) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 32)
• Consequence: POLR2E NM_002695.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 5.77

Genes affected

POLR2E (HGNC:9192): (RNA polymerase II, I and III subunit E) This gene encodes the fifth largest subunit of RNA polymerase II, the polymerase responsible for synthesizing messenger RNA in eukaryotes. This subunit is shared by the other two DNA-directed RNA polymerases and is present in two-fold molar excess over the other polymerase subunits. An interaction between this subunit and a hepatitis virus transactivating protein has been demonstrated, suggesting that interaction between transcriptional activators and the polymerase can occur through this subunit. A pseudogene is located on chromosome 11. Three transcript variants encoding two different isoforms have been found for this gene. [provided by RefSeq, Oct 2015]

ACMG classification

Verdict is Uncertain_significance. Variant got 4 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.874

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
POLR2E	NM_002695.5	c.574A>G	p.Lys192Glu	missense_variant	7/8	ENST00000615234.5

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
POLR2E	ENST00000615234.5	c.574A>G	p.Lys192Glu	missense_variant	7/8	1	NM_002695.5	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 10, 2023

The c.574A>G (p.K192E) alteration is located in exon 7 (coding exon 7) of the POLR2E gene. This alteration results from a A to G substitution at nucleotide position 574, causing the lysine (K) at amino acid position 192 to be replaced by a glutamic acid (E). 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	Pathogenic	0.99
BayesDel_addAF	Pathogenic	0.16	D
BayesDel_noAF	Uncertain	0.0
Cadd	Pathogenic	29
Dann	Uncertain	1.0
DEOGEN2	Uncertain	0.63	D;D;D;T
Eigen	Uncertain	0.60
Eigen_PC	Uncertain	0.49
FATHMM_MKL	Uncertain	0.86	D
M_CAP	Uncertain	0.12	D
MetaRNN	Pathogenic	0.87	D;D;D;D
MetaSVM	Uncertain	-0.086	T
MutationAssessor	Uncertain	2.2	M;M;M;.
MutationTaster	Benign	1.0	D;D
PrimateAI	Pathogenic	0.85	D
Sift4G	Uncertain	0.0030	D;D;D;D
Polyphen		0.99	D;D;D;.
Vest4		0.94
MutPred		0.74		Loss of MoRF binding (P = 0.0019);Loss of MoRF binding (P = 0.0019);Loss of MoRF binding (P = 0.0019);.;
MVP		0.63
ClinPred		0.96	D
GERP RS		3.8
Varity_R		0.94
gMVP		0.81

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

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr19-1089544;