NM_006502.3:c.1603A>C

Variant names:

• chr6-43614018-A-C
• rs56307355
• NM_006502.3:c.1603A>C

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_006502.3(POLH):​c.1603A>C​(p.Lys535Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000205 in 1,461,780 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. K535E) has been classified as Likely benign.

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: POLH NM_006502.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.34
• Publications: 15 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: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.08447686).

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.1603A>C	p.Lys535Gln	missense	Exon 11 of 11	NP_006493.1
	POLH	NM_001291969.2		c.1231A>C	p.Lys411Gln	missense	Exon 9 of 9	NP_001278898.1
	POLH	NM_001291970.2		c.*287A>C		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.1603A>C	p.Lys535Gln	missense	Exon 11 of 11	ENSP00000361310.4
	POLH	ENST00000372226.1	TSL:1	c.*287A>C		3_prime_UTR	Exon 11 of 11	ENSP00000361300.1
	GTPBP2	ENST00000496137.5	TSL:3	n.*131+6101T>G		intron	N/A	ENSP00000436973.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD2 exomes AF: 0.00000797 AC: 2 AN: 250840 AF XY: 0.00000738

Gnomad AFR exome AF: 0.00

Gnomad AMR exome AF: 0.0000289

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.00

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000883

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.00000205 AC: 3 AN: 1461780 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 727188

African (AFR) AF: 0.00 AC: 0 AN: 33474

American (AMR) AF: 0.0000224 AC: 1 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53320

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

European-Non Finnish (NFE) AF: 0.00000180 AC: 2 AN: 1112004

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

GnomAD4 genome Cov.: 32

Alfa AF: 0.00 Hom.: 1

Bravo AF: 0.00000378

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.10
BayesDel_addAF	Benign	-0.23	T
BayesDel_noAF	Benign	-0.48
CADD	Benign	19
DANN	Benign	0.97
DEOGEN2	Benign	0.11	T
Eigen	Benign	-0.45
Eigen_PC	Benign	-0.34
FATHMM_MKL	Benign	0.36	N
LIST_S2	Benign	0.70	T
M_CAP	Benign	0.012	T
MetaRNN	Benign	0.084	T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	1.9	L
PhyloP100		1.3
PrimateAI	Benign	0.35	T
PROVEAN	Benign	-1.0	N
REVEL	Benign	0.044
Sift	Benign	0.17	T
Sift4G	Benign	0.44	T
Polyphen		0.0080	B
Vest4		0.15
MutPred		0.44		Loss of methylation at K535 (P = 0.0207)
MVP		0.59
MPC		0.29
ClinPred		0.11	T
GERP RS		3.3
Varity_R		0.19
gMVP		0.39
Mutation Taster		=80/20	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: rs56307355; hg19: chr6-43581755;