NM_020144.5:c.1857T>G

Variant names:

• chr7-4859954-A-C
• rs1335231558
• NM_020144.5:c.1857T>G

Variant summary

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

The NM_020144.5(PAPOLB):​c.1857T>G​(p.Cys619Trp) 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 1,461,684 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/17 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: PAPOLB NM_020144.5 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 1.32
• Publications: 0 publications found

Genes affected

PAPOLB (HGNC:15970): (poly(A) polymerase beta) Predicted to enable polynucleotide adenylyltransferase activity. Predicted to be involved in mRNA polyadenylation. Predicted to be located in endoplasmic reticulum. Predicted to be active in nucleus. [provided by Alliance of Genome Resources, Apr 2022]

RADIL (HGNC:22226): (Rap associating with DIL domain) Predicted to enable GTPase binding activity. Acts upstream of or within substrate adhesion-dependent cell spreading. Located in microtubule. Part of protein-containing complex. [provided by Alliance of Genome Resources, Apr 2022]

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=0.23318529).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_020144.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PAPOLB	NM_020144.5	MANE Select	c.1857T>G	p.Cys619Trp	missense	Exon 1 of 1	NP_064529.4
	RADIL	NM_018059.5	MANE Select	c.535+17651T>G		intron	N/A	NP_060529.4

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	PAPOLB	ENST00000404991.2	TSL:6 MANE Select	c.1857T>G	p.Cys619Trp	missense	Exon 1 of 1	ENSP00000384700.2	Q9NRJ5
	RADIL	ENST00000399583.4	TSL:5 MANE Select	c.535+17651T>G		intron	N/A	ENSP00000382492.3	Q96JH8-4
	RADIL	ENST00000904466.1		c.535+17651T>G		intron	N/A	ENSP00000574525.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461684 Hom.: 0 Cov.: 32 AF XY: 0.00000138 AC XY: 1 AN XY: 727120

African (AFR) AF: 0.00 AC: 0 AN: 33480

American (AMR) AF: 0.00 AC: 0 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: 0.0000116 AC: 1 AN: 86252

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53400

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

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 1111854

Other (OTH) AF: 0.00 AC: 0 AN: 60370

GnomAD4 genome Cov.: 33

ClinVar

ClinVar submissions

Significance: Uncertain significance

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	1	-	not specified (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.19
BayesDel_addAF	Benign	-0.082	T
BayesDel_noAF	Benign	-0.36
CADD	Benign	18
DANN	Benign	0.97
Eigen	Benign	-0.46
Eigen_PC	Benign	-0.55
FATHMM_MKL	Benign	0.27	N
LIST_S2	Benign	0.82	T
M_CAP	Benign	0.0084	T
MetaRNN	Benign	0.23	T
MetaSVM	Benign	-1.1	T
PhyloP100		1.3
PrimateAI	Benign	0.21	T
REVEL	Benign	0.079
Sift4G	Benign	0.19	T
Polyphen		0.91	P
Vest4		0.28
MVP		0.45
MPC		0.24
ClinPred		0.20	T
GERP RS		0.58
gMVP		0.13
Mutation Taster		=98/2	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: rs1335231558; hg19: chr7-4899585;