chr6-83853451-G-T

Variant names:

Variant summary

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

The NM_001009994.3(RIPPLY2):c.35G>T(p.Ser12Ile) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000000719 in 1,391,368 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. S12T) has been classified as Uncertain significance.

Frequency

Genomes: not found (cov: 33)

Exomes 𝑓: 7.2e-7 ( 0 hom. )

Consequence

RIPPLY2
NM_001009994.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: -1.60

Publications

0 publications found

Variant links:

Genes affected

RIPPLY2 (HGNC:21390): (ripply transcriptional repressor 2) This gene encodes a nuclear protein that belongs to a novel family of proteins required for vertebrate somitogenesis. Members of this family have a tetrapeptide WRPW motif that is required for interaction with the transcriptional repressor Groucho and a carboxy-terminal Ripply homology domain/Bowline-DSCR-Ledgerline conserved region required for transcriptional repression. Null mutant mice die soon after birth and display defects in axial skeleton segmentation due to defective somitogenesis. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Feb 2016]

RIPPLY2 Gene-Disease associations (from GenCC):

spondylocostal dysostosis 6, autosomal recessive
Inheritance: AR, Unknown Classification: STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
autosomal recessive spondylocostal dysostosis
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

RIPPLY2 links:

ENSG00000287705 (HGNC:):

ENSG00000287705 links:

Genome browser will be placed here

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=0.05105269).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001009994.3. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
RIPPLY2	NM_001009994.3	MANE Select	c.35G>T	p.Ser12Ile	missense	Exon 1 of 4	NP_001009994.1	Q5TAB7-1
RIPPLY2	NM_001400900.1		c.35G>T	p.Ser12Ile	missense	Exon 1 of 3	NP_001387829.1
RIPPLY2-CYB5R4	NR_174604.1		n.92G>T		non_coding_transcript_exon	Exon 1 of 18

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
RIPPLY2	ENST00000369689.6	TSL:1 MANE Select	c.35G>T	p.Ser12Ile	missense	Exon 1 of 4	ENSP00000358703.1	Q5TAB7-1
ENSG00000287705	ENST00000656981.1		n.717C>A		non_coding_transcript_exon	Exon 1 of 1
RIPPLY2	ENST00000369687.2	TSL:2	c.-323G>T		upstream_gene	N/A	ENSP00000358701.1	Q5TAB7-2

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

AF:

7.19e-7

AC:

AN:

1391368

Hom.:

Cov.:

AF XY:

0.00000146

AC XY:

AN XY:

686406

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:

31450

American (AMR)

AF:

0.00

AC:

AN:

35488

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25098

East Asian (EAS)

AF:

0.0000280

AC:

AN:

35704

South Asian (SAS)

AF:

0.00

AC:

AN:

79094

European-Finnish (FIN)

AF:

0.00

AC:

AN:

43726

Middle Eastern (MID)

AF:

0.00

AC:

AN:

4546

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1078482

Other (OTH)

AF:

0.00

AC:

AN:

57780

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), 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

0.13

BayesDel_addAF

Benign

-0.21

BayesDel_noAF

Benign

-0.54

CADD

Benign

5.5

(source)

DANN

Benign

0.95

DEOGEN2

Benign

0.16

Eigen

Benign

-1.3

Eigen_PC

Benign

-1.4

FATHMM_MKL

Benign

0.066

LIST_S2

Benign

0.36

M_CAP

Benign

0.050

MetaRNN

Benign

0.051

MetaSVM

Benign

-1.0

MutationAssessor

Benign

0.0

PhyloP100

-1.6

PrimateAI

Uncertain

0.66

PROVEAN

Benign

-1.0

REVEL

Benign

0.056

Sift

Uncertain

0.026

Sift4G

Uncertain

0.028

Polyphen

0.060

Vest4

0.088

MutPred

0.23

Loss of glycosylation at S12 (P = 0.0013)

MVP

0.20

MPC

0.10

ClinPred

0.59

GERP RS

-5.8

PromoterAI

-0.011

Neutral

(source)

Varity_R

0.13

gMVP

0.086

Mutation Taster

=94/6

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

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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