rs122454127

Variant names:

• chrX-20195131-G-A
• rs122454127
• NM_004586.3:c.340C>T

Variant summary

Our verdict is Likely pathogenic. Variant got 9 ACMG points: 9P and 0B. PM2 PP2 PP3_Strong PP5_Moderate

The NM_004586.3(RPS6KA3):​c.340C>T​(p.Arg114Trp) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★).

• Frequency:
  • Genomes: not found (cov: 23)
  • Exomes 𝑓: 0.0 (0 hom. 0 hem.)
  • Failed GnomAD Quality Control
• Consequence: RPS6KA3 NM_004586.3 missense
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:2
• Conservation: PhyloP100: 5.04

Genes affected

RPS6KA3 (HGNC:10432): (ribosomal protein S6 kinase A3) This gene encodes a member of the RSK (ribosomal S6 kinase) family of serine/threonine kinases. This kinase contains 2 non-identical kinase catalytic domains and phosphorylates various substrates, including members of the mitogen-activated kinase (MAPK) signalling pathway. The activity of this protein has been implicated in controlling cell growth and differentiation. Mutations in this gene have been associated with Coffin-Lowry syndrome (CLS). [provided by RefSeq, Jul 2008]

ACMG classification

Verdict is Likely_pathogenic. Variant got 9 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the RPS6KA3 gene, where missense mutations are typically associated with disease (based on misZ statistic). The gene has 36 curated pathogenic missense variants (we use a threshold of 10). The gene has 11 curated benign missense variants. Gene score misZ: 4.5208 (above the threshold of 3.09). GenCC associations: The gene is linked to intellectual disability, X-linked 19, Coffin-Lowry syndrome, non-syndromic X-linked intellectual disability, symptomatic form of Coffin-Lowry syndrome in female carriers.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.972
• PP5: Variant X-20195131-G-A is Pathogenic according to our data. Variant chrX-20195131-G-A is described in ClinVar as [Likely_pathogenic]. Clinvar id is 11655.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RPS6KA3	NM_004586.3	c.340C>T	p.Arg114Trp	missense_variant	Exon 5 of 22	ENST00000379565.9	NP_004577.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RPS6KA3	ENST00000379565.9	c.340C>T	p.Arg114Trp	missense_variant	Exon 5 of 22	1	NM_004586.3	ENSP00000368884.3

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome Data not reliable, filtered out with message: AC0 AF: 0.00 AC: 0 AN: 1063001 Hom.: 0 Cov.: 24 AF XY: 0.00 AC XY: 0 AN XY: 331967

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.00

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 23

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:2

Revision: criteria provided, single submitter

Submissions by phenotype

Coffin-Lowry syndrome Pathogenic:2

Feb 09, 2018

Institute for Genomic Medicine (IGM) Clinical Laboratory, Nationwide Children's Hospital

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: clinical testing

[ACMG/AMP: PM1, PM2, PS4_Moderate, PP1, PP2, PP3] This alteration is located in a mutational hotspot and/or critical and well-established functional domain [PM1], is absent from or rarely observed in large-scale population databases [PM2], has previously been observed in multiple unrelated patients with the same phenotype [PS4_Moderate], has been shown to cosegregate with disease in multiple affected family members [PP1], is a missense variant in a gene in which missense variants are a common mechanism of disease [PP2], is predicted to be damaging by multiple functional prediction tools [PP3]. -

Jan 01, 1999

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.41	D
BayesDel_noAF	Pathogenic	0.36
CADD	Pathogenic	32
DANN	Pathogenic	1.0
DEOGEN2	Uncertain	0.43	T;T;.;.;.;.;.;T;.;.;.;T
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Pathogenic	0.99	.;D;.;.;.;.;.;D;.;.;D;D
M_CAP	Pathogenic	0.66	D
MetaRNN	Pathogenic	0.97	D;D;D;D;D;D;D;D;D;D;D;D
MetaSVM	Uncertain	0.012	D
MutationAssessor	Uncertain	2.6	M;M;.;.;.;.;.;.;.;.;.;.
PrimateAI	Pathogenic	0.93	D
PROVEAN	Pathogenic	-7.5	D;.;.;.;.;.;.;D;.;.;.;.
REVEL	Uncertain	0.63
Sift	Pathogenic	0.0	D;.;.;.;.;.;.;D;.;.;.;.
Sift4G	Uncertain	0.0020	D;.;.;.;.;.;.;.;.;.;.;.
Polyphen		1.0	D;D;D;D;D;D;D;.;D;D;D;D
Vest4		0.73
MutPred		0.91		Gain of catalytic residue at M117 (P = 0.0061);Gain of catalytic residue at M117 (P = 0.0061);.;.;.;.;.;.;.;.;.;.;
MVP		0.97
MPC		2.8
ClinPred		1.0	D
GERP RS		6.1
Varity_R		0.97
gMVP		0.98

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.090		Details are displayed if max score is > 0.2

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

Publications

LitVar

Other links and lift over

dbSNP: rs122454127; hg19: chrX-20213249; COSMIC: COSV65387529;