8-42369036-A-T

Variant names:

• chr8-42369036-A-T
• rs3136794
• NM_002690.3:c.709-235A>T

Variant summary

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

The NM_002690.3(POLB):​c.709-235A>T variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000021 in 333,364 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.000013 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000028 (0 hom.)
• Consequence: POLB NM_002690.3 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.105
• Publications: 4 publications found

Genes affected

POLB (HGNC:9174): (DNA polymerase beta) The protein encoded by this gene is a DNA polymerase involved in base excision and repair, also called gap-filling DNA synthesis. The encoded protein, acting as a monomer, is normally found in the cytoplasm, but it translocates to the nucleus upon DNA damage. Several transcript variants of this gene exist, but the full-length nature of only one has been described to date. [provided by RefSeq, Sep 2011]

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 (BayesDel_noAF=-0.88).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002690.3. 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
	POLB	NM_002690.3	MANE Select	c.709-235A>T		intron	N/A	NP_002681.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	POLB	ENST00000265421.9	TSL:1 MANE Select	c.709-235A>T		intron	N/A	ENSP00000265421.4
	POLB	ENST00000521492.1	TSL:2	c.-370A>T		5_prime_UTR	Exon 1 of 3	ENSP00000430831.1
	POLB	ENST00000518925.5	TSL:5	c.814-235A>T		intron	N/A	ENSP00000430784.1

Frequencies

GnomAD3 genomes AF: 0.0000132 AC: 2 AN: 152000 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000242

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: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000147

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.0000276 AC: 5 AN: 181364 Hom.: 0 Cov.: 0 AF XY: 0.0000215 AC XY: 2 AN XY: 93072

African (AFR) AF: 0.00 AC: 0 AN: 5366

American (AMR) AF: 0.00 AC: 0 AN: 5318

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 6818

East Asian (EAS) AF: 0.00 AC: 0 AN: 15728

South Asian (SAS) AF: 0.00 AC: 0 AN: 6040

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 13150

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 920

European-Non Finnish (NFE) AF: 0.0000431 AC: 5 AN: 115986

Other (OTH) AF: 0.00 AC: 0 AN: 12038

GnomAD4 genome AF: 0.0000132 AC: 2 AN: 152000 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74254

African (AFR) AF: 0.0000242 AC: 1 AN: 41356

American (AMR) AF: 0.00 AC: 0 AN: 15280

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5194

South Asian (SAS) AF: 0.00 AC: 0 AN: 4830

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10566

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.0000147 AC: 1 AN: 67990

Other (OTH) AF: 0.00 AC: 0 AN: 2088

Alfa AF: 0.00 Hom.: 241

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.88
CADD	Benign	5.4
DANN	Benign	0.73
PhyloP100		-0.10
PromoterAI		-0.0076	Neutral

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: rs3136794; hg19: chr8-42226554;