Genetic Variant NM_018962.3:c.164G>A (chr21-37008216-G-A) – ACMG Classification: Likely_benign (-2 pts)

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_018962.3(RIPPLY3):c.164G>A(p.Gly55Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000137 in 1,461,830 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 15/21 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. G55A) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 31)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

RIPPLY3
NM_018962.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 0.135

Publications

0 publications found

Variant links:

Genes affected

RIPPLY3 (HGNC:3047): (ripply transcriptional repressor 3) Predicted to be involved in embryonic pattern specification and negative regulation of transcription by RNA polymerase II. Predicted to act upstream of or within negative regulation of cell population proliferation. Predicted to be active in nucleus. [provided by Alliance of Genome Resources, Apr 2022]

RIPPLY3 links:

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ACMG classification

Classification was made for transcript

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=0.060340554).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_018962.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
RIPPLY3	NM_018962.3	MANE Select	c.164G>A	p.Gly55Glu	missense	Exon 2 of 4	NP_061835.1	P57055-1
RIPPLY3	NM_001317768.2		c.-89G>A		5_prime_UTR	Exon 2 of 4	NP_001304697.1	P57055-2
RIPPLY3	NM_001317777.1		c.-21G>A		5_prime_UTR	Exon 2 of 3	NP_001304706.1	P57055-2

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
RIPPLY3	ENST00000329553.3	TSL:1 MANE Select	c.164G>A	p.Gly55Glu	missense	Exon 2 of 4	ENSP00000331734.2	P57055-1
RIPPLY3	ENST00000485272.5	TSL:1	n.144G>A		non_coding_transcript_exon	Exon 2 of 4
RIPPLY3	ENST00000490393.1	TSL:1	n.92G>A		non_coding_transcript_exon	Exon 2 of 3

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461830

Hom.:

Cov.:

AF XY:

0.00000275

AC XY:

AN XY:

727218

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

33480

American (AMR)

AF:

0.00

AC:

AN:

44722

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

26134

East Asian (EAS)

AF:

0.00

AC:

AN:

39698

South Asian (SAS)

AF:

0.00

AC:

AN:

86250

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53388

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5764

European-Non Finnish (NFE)

AF:

0.00000180

AC:

AN:

1112000

Other (OTH)

AF:

0.00

AC:

AN:

60394

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000203476), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

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

Cov.:

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.11

BayesDel_addAF

Benign

-0.27

BayesDel_noAF

Benign

-0.62

CADD

Benign

9.3

(source)

DANN

Benign

0.57

DEOGEN2

Benign

0.068

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.2

FATHMM_MKL

Benign

0.024

LIST_S2

Benign

0.38

M_CAP

Benign

0.0022

MetaRNN

Benign

0.060

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.92

PhyloP100

0.14

PrimateAI

Uncertain

0.55

PROVEAN

Benign

-1.7

REVEL

Benign

0.023

Sift

Benign

0.35

Sift4G

Benign

0.95

Polyphen

0.087

Vest4

0.26

MutPred

0.12

Gain of solvent accessibility (P = 0.0456)

MVP

0.13

MPC

0.085

ClinPred

0.087

GERP RS

1.8

Varity_R

0.042

gMVP

0.062

Mutation Taster

=95/5

polymorphism

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over