Genetic Variant PRMT8:p.Ala17Thr (chr12-3491674-G-A) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP4_ModerateBS2

The NM_019854.5(PRMT8):c.49G>A(p.Ala17Thr) variant causes a missense change. The variant allele was found at a frequency of 0.000041 in 1,611,628 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign 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. A17E) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 30)

Exomes 𝑓: 0.000043 ( 0 hom. )

Consequence

PRMT8
NM_019854.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.78

Publications

0 publications found

Variant links:

Genes affected

PRMT8 (HGNC:5188): (protein arginine methyltransferase 8) Arginine methylation is a widespread posttranslational modification mediated by arginine methyltransferases, such as PRMT8. Arginine methylation is involved in a number of cellular processes, including DNA repair, RNA transcription, signal transduction, protein compartmentalization, and possibly protein translation (Lee et al., 2005 [PubMed 16051612]).[supplied by OMIM, Mar 2008]

PRMT8 links:

THCAT155 (HGNC:):

THCAT155 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -6 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.16555303).

BS2

High AC in GnomAdExome4 at 63 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PRMT8	NM_019854.5 link	c.49G>A	p.Ala17Thr	missense_variant	Exon 1 of 10	ENST00000382622.4	NP_062828.3	Q9NR22-1Q59GT2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	UniProt
PRMT8	ENST00000382622.4 link	c.49G>A	p.Ala17Thr	missense_variant	Exon 1 of 10	1	NM_019854.5	ENSP00000372067.3	Q9NR22-1
PRMT8	ENST00000452611.6 link	c.49-48932G>A		intron_variant	Intron 1 of 9	1		ENSP00000414507.2	Q9NR22-2
PRMT8	ENST00000543701.5 link	n.416G>A		non_coding_transcript_exon_variant	Exon 1 of 9	2
THCAT155	ENST00000673532.1 link	n.88+1058C>T		intron_variant	Intron 1 of 1

Frequencies

GnomAD3 genomes

AF:

0.0000198

AC:

AN:

151670

Hom.:

Cov.:

show subpopulations

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.00000404

AC:

AN:

247696

AF XY:

0.00000745

show subpopulations

Gnomad AFR exome

AF:

0.0000629

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000432

AC:

AN:

1459958

Hom.:

Cov.:

AF XY:

0.0000413

AC XY:

AN XY:

726266

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

33472

American (AMR)

AF:

0.00

AC:

AN:

44694

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26114

East Asian (EAS)

AF:

0.00

AC:

AN:

39688

South Asian (SAS)

AF:

0.00

AC:

AN:

86064

European-Finnish (FIN)

AF:

0.00

AC:

AN:

52024

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5762

European-Non Finnish (NFE)

AF:

0.0000549

AC:

AN:

1111792

Other (OTH)

AF:

0.0000331

AC:

AN:

60348

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.467

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000198

AC:

AN:

151670

Hom.:

Cov.:

AF XY:

0.0000405

AC XY:

AN XY:

74030

show subpopulations

African (AFR)

AF:

0.0000242

AC:

AN:

41274

American (AMR)

AF:

0.00

AC:

AN:

15252

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3462

East Asian (EAS)

AF:

0.00

AC:

AN:

5094

South Asian (SAS)

AF:

0.00

AC:

AN:

4778

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10582

Middle Eastern (MID)

AF:

0.00

AC:

AN:

314

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

67922

Other (OTH)

AF:

0.00

AC:

AN:

2082

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.425

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00000756

EpiCase

AF:

0.0000545

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Oct 29, 2021

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.49G>A (p.A17T) alteration is located in exon 1 (coding exon 1) of the PRMT8 gene. This alteration results from a G to A substitution at nucleotide position 49, causing the alanine (A) at amino acid position 17 to be replaced by a threonine (T). 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

Uncertain

0.43

BayesDel_addAF

Benign

-0.20

BayesDel_noAF

Benign

-0.34

CADD

Uncertain

(source)

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.035

Eigen

Benign

0.063

Eigen_PC

Benign

0.16

FATHMM_MKL

Benign

0.018

LIST_S2

Benign

0.78

M_CAP

Benign

0.010

MetaRNN

Benign

0.17

MetaSVM

Benign

-1.1

MutationAssessor

Benign

1.6

PhyloP100

6.8

PrimateAI

Uncertain

0.71

PROVEAN

Benign

-0.46

REVEL

Benign

0.11

Sift

Pathogenic

0.0

Sift4G

Uncertain

0.015

Polyphen

0.30

Vest4

0.34

MutPred

0.090

Gain of phosphorylation at A17 (P = 0.0392);

MVP

0.30

MPC

0.36

ClinPred

0.75

GERP RS

3.5

PromoterAI

-0.30

Neutral

(source)

Varity_R

0.26

gMVP

0.80

Mutation Taster

=68/32

polymorphism

(source)

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

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over