X-20155487-G-A

Position:

• chrX-20155487-G-A

Variant summary

Our verdict is Likely benign. Variant got -4 ACMG points: 1P and 5B. PP2 BP4 BS2

The NM_004586.3(RPS6KA3):​c.2134C>T​(p.Arg712Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000456 in 1,097,230 control chromosomes in the GnomAD database, with no homozygous occurrence. There are 2 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 23)
  • Exomes 𝑓: 0.0000046 (0 hom. 2 hem.)
• Consequence: RPS6KA3 NM_004586.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 3.36

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_benign. Variant got -4 ACMG points.

• PP2: Missense variant in gene, where missense usually causes diseases (based on misZ statistic), RPS6KA3. . Gene score misZ 4.5208 (greater than the threshold 3.09). GenCC has associacion of gene with intellectual disability, X-linked 19, Coffin-Lowry syndrome, non-syndromic X-linked intellectual disability, symptomatic form of Coffin-Lowry syndrome in female carriers.
• BP4: Computational evidence support a benign effect (MetaRNN=0.2885095).
• BS2: High Hemizygotes in GnomAdExome4 at 2 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RPS6KA3	NM_004586.3	c.2134C>T	p.Arg712Cys	missense_variant	22/22	ENST00000379565.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RPS6KA3	ENST00000379565.9	c.2134C>T	p.Arg712Cys	missense_variant	22/22	1	NM_004586.3	P4

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome AF: 0.00000456 AC: 5 AN: 1097230 Hom.: 0 Cov.: 29 AF XY: 0.00000552 AC XY: 2 AN XY: 362594

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: 0.00000476

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 23

Bravo AF: 0.00000756

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

Jun 04, 2023

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.13
BayesDel_addAF	Uncertain	0.015	T
BayesDel_noAF	Benign	-0.22
CADD	Uncertain	26
DANN	Uncertain	0.99
DEOGEN2	Uncertain	0.45	T;T;.;.;.;.;.;.;.;.;.;T
FATHMM_MKL	Uncertain	0.94	D
LIST_S2	Pathogenic	0.98	.;D;.;.;.;.;.;D;.;.;D;D
M_CAP	Benign	0.030	D
MetaRNN	Benign	0.29	T;T;T;T;T;T;T;T;T;T;T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	-0.34	N;N;.;.;.;.;.;.;.;.;.;.
MutationTaster	Benign	1.0	D;D;D;D
PrimateAI	Pathogenic	0.87	D
PROVEAN	Uncertain	-2.4	N;.;.;.;.;.;.;.;.;.;.;.
REVEL	Benign	0.16
Sift	Uncertain	0.022	D;.;.;.;.;.;.;.;.;.;.;.
Sift4G	Uncertain	0.033	D;.;.;.;.;.;.;.;.;.;.;.
Polyphen		0.0010	B;B;P;P;P;P;P;.;P;P;P;B
Vest4		0.51
MutPred		0.50		Loss of solvent accessibility (P = 0.0079);Loss of solvent accessibility (P = 0.0079);.;.;.;.;.;.;.;.;.;.;
MVP		0.81
MPC		1.9
ClinPred		0.93	D
GERP RS		6.1
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.80
gMVP		0.87

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.030		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: rs1323142539; hg19: chrX-20173605; COSMIC: COSV65387275;