6-43614181-A-G

Variant names:

• chr6-43614181-A-G
• rs121908565
• NM_006502.3:c.1766A>G

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The NM_006502.3(POLH):​c.1766A>G​(p.Lys589Arg) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000684 in 1,461,806 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 17/22 in silico tools predict a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. K589T) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: POLH NM_006502.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.350
• Publications: 0 publications found

Genes affected

POLH (HGNC:9181): (DNA polymerase eta) This gene encodes a member of the Y family of specialized DNA polymerases. It copies undamaged DNA with a lower fidelity than other DNA-directed polymerases. However, it accurately replicates UV-damaged DNA; when thymine dimers are present, this polymerase inserts the complementary nucleotides in the newly synthesized DNA, thereby bypassing the lesion and suppressing the mutagenic effect of UV-induced DNA damage. This polymerase is thought to be involved in hypermutation during immunoglobulin class switch recombination. Mutations in this gene result in XPV, a variant type of xeroderma pigmentosum. Several transcript variants encoding different isoforms have been found for this gene. [provided by RefSeq, May 2014]

GTPBP2 (HGNC:4670): (GTP binding protein 2) GTP-binding proteins, or G proteins, constitute a superfamily capable of binding GTP or GDP. G proteins are activated by binding GTP and are inactivated by hydrolyzing GTP to GDP. This general mechanism enables G proteins to perform a wide range of biologic activities.[supplied by OMIM, Jan 2003]

GTPBP2 Gene-Disease associations (from GenCC):

• Jaberi-Elahi syndrome

  Inheritance: AR Classification: DEFINITIVE, STRONG Submitted by: Genomics England PanelApp, Ambry Genetics, G2P, Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.05608824).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006502.3. 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
	POLH	NM_006502.3	MANE Select	c.1766A>G	p.Lys589Arg	missense	Exon 11 of 11	NP_006493.1
	POLH	NM_001291969.2		c.1394A>G	p.Lys465Arg	missense	Exon 9 of 9	NP_001278898.1
	POLH	NM_001291970.2		c.*450A>G		3_prime_UTR	Exon 11 of 11	NP_001278899.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	POLH	ENST00000372236.9	TSL:1 MANE Select	c.1766A>G	p.Lys589Arg	missense	Exon 11 of 11	ENSP00000361310.4
	POLH	ENST00000372226.1	TSL:1	c.*450A>G		3_prime_UTR	Exon 11 of 11	ENSP00000361300.1
	GTPBP2	ENST00000496137.5	TSL:3	n.*131+5938T>C		intron	N/A	ENSP00000436973.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461806 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 727198

African (AFR) AF: 0.00 AC: 0 AN: 33478

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26130

East Asian (EAS) AF: 0.00 AC: 0 AN: 39698

South Asian (SAS) AF: 0.00 AC: 0 AN: 86254

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53420

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111938

Other (OTH) AF: 0.00 AC: 0 AN: 60396

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.068
BayesDel_addAF	Benign	-0.28	T
BayesDel_noAF	Benign	-0.64
CADD	Benign	9.2
DANN	Benign	0.90
DEOGEN2	Benign	0.088	T
Eigen	Benign	-1.0
Eigen_PC	Benign	-1.0
FATHMM_MKL	Benign	0.096	N
LIST_S2	Benign	0.57	T
M_CAP	Benign	0.0085	T
MetaRNN	Benign	0.056	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	1.4	L
PhyloP100		-0.35
PrimateAI	Benign	0.26	T
PROVEAN	Benign	-0.50	N
REVEL	Benign	0.018
Sift	Benign	0.50	T
Sift4G	Benign	0.54	T
Polyphen		0.0010	B
Vest4		0.040
MutPred		0.27		Loss of ubiquitination at K589 (P = 6e-04)
MVP		0.44
MPC		0.17
ClinPred		0.029	T
GERP RS		-0.36
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.044
gMVP		0.12
Mutation Taster		=92/8	polymorphism

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: rs121908565; hg19: chr6-43581918;