chrX-20195131-G-A

Variant names:

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

Variant summary

Our verdict is Pathogenic. The variant received 11 ACMG points: 11P and 0B. PM1 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 (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R114Q) has been classified as Uncertain significance.

• 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
• Publications: 10 publications found

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]

RPS6KA3 Gene-Disease associations (from GenCC):

• Coffin-Lowry syndrome

  Inheritance: XL Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: PanelApp Australia, Labcorp Genetics (formerly Invitae), ClinGen, G2P, Orphanet, Genomics England PanelApp
• intellectual disability, X-linked 19

  Inheritance: XL Classification: STRONG Submitted by: Labcorp Genetics (formerly Invitae)
• symptomatic form of Coffin-Lowry syndrome in female carriers

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
• non-syndromic X-linked intellectual disability

  Inheritance: XL Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Pathogenic. The variant received 11 ACMG points.

• PM1: In a hotspot region, there are 3 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 4 uncertain in NM_004586.3
• PM2: Very rare variant in population databases, with high coverage
• PP2: Missense variant in the gene, where a lot of missense mutations are associated with disease in ClinVar. 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). Trascript score misZ: NaN (below the threshold of 3.09). GenCC associations: The gene is linked to symptomatic form of Coffin-Lowry syndrome in female carriers, Coffin-Lowry syndrome, non-syndromic X-linked intellectual disability, intellectual disability, X-linked 19.
• 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 VariationId is 11655.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_004586.3. 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
	RPS6KA3	NM_004586.3	MANE Select	c.340C>T	p.Arg114Trp	missense	Exon 5 of 22	NP_004577.1	P51812
	RPS6KA3	NM_001438340.1		c.256C>T	p.Arg86Trp	missense	Exon 5 of 22	NP_001425269.1

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RPS6KA3	ENST00000379565.9	TSL:1 MANE Select	c.340C>T	p.Arg114Trp	missense	Exon 5 of 22	ENSP00000368884.3	P51812
	RPS6KA3	ENST00000952699.1		c.388C>T	p.Arg130Trp	missense	Exon 6 of 23	ENSP00000622758.1
	RPS6KA3	ENST00000916293.1		c.340C>T	p.Arg114Trp	missense	Exon 5 of 22	ENSP00000586352.1

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

African (AFR) AF: 0.00 AC: 0 AN: 25754

American (AMR) AF: 0.00 AC: 0 AN: 35122

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 19116

East Asian (EAS) AF: 0.00 AC: 0 AN: 29994

South Asian (SAS) AF: 0.00 AC: 0 AN: 53217

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 40453

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 4047

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 810407

Other (OTH) AF: 0.00 AC: 0 AN: 44891

GnomAD4 genome Cov.: 23

Alfa AF: 0.00 Hom.: 0

ClinVar

ClinVar submissions

Significance: Likely pathogenic

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
2	-	-	Coffin-Lowry syndrome (2)

Computational scores

Source: dbNSFP v4.9

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
FATHMM_MKL	Uncertain	0.96	D
LIST_S2	Pathogenic	0.99	D
M_CAP	Pathogenic	0.66	D
MetaRNN	Pathogenic	0.97	D
MetaSVM	Uncertain	0.012	D
MutationAssessor	Uncertain	2.6	M
PhyloP100		5.0
PrimateAI	Pathogenic	0.93	D
PROVEAN	Pathogenic	-7.5	D
REVEL	Uncertain	0.63
Sift	Pathogenic	0.0	D
Sift4G	Uncertain	0.0020	D
Polyphen		1.0	D
Vest4		0.73
MutPred		0.91		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
Mutation Taster		=3/97	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
Splicevardb		1.0
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

Other links and lift over

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