rs267608645

Positions:

chrX-18604691-C-T

Variant summary

Our verdict is Benign. Variant got -21 ACMG points: 0P and 21B. BP4_StrongBP6_Very_StrongBP7BS1BS2

The NM_001323289.2(CDKL5):c.1767C>T(p.His589=) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000126 in 1,210,293 control chromosomes in the GnomAD database, including 2 homozygotes. There are 76 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.000089 ( 0 hom., 3 hem., cov: 23)

Exomes 𝑓: 0.00013 ( 2 hom. 73 hem. )

Consequence

CDKL5
NM_001323289.2 synonymous

Scores

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:5

Conservation

PhyloP100: -0.684

Variant links:

Genes affected

CDKL5 (HGNC:11411): (cyclin dependent kinase like 5) This gene is a member of Ser/Thr protein kinase family and encodes a phosphorylated protein with protein kinase activity. Mutations in this gene have been associated with X-linked infantile spasm syndrome (ISSX), also known as X-linked West syndrome, and Rett syndrome (RTT). Alternate transcriptional splice variants have been characterized. [provided by RefSeq, Jul 2008]

CDKL5 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -21 ACMG points.

BP4

Computational evidence support a benign effect (BayesDel_noAF=-0.61).

BP6

Variant X-18604691-C-T is Benign according to our data. Variant chrX-18604691-C-T is described in ClinVar as [Benign]. Clinvar id is 143784.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

BP7

Synonymous conserved (PhyloP=-0.684 with no splicing effect.

BS1

Variant frequency is greater than expected in population sas. gnomad4 allele frequency = 0.000089 (10/112399) while in subpopulation SAS AF= 0.00332 (9/2712). AF 95% confidence interval is 0.00173. There are 0 homozygotes in gnomad4. There are 3 alleles in male gnomad4 subpopulation. Median coverage is 23. This position pass quality control queck.

BS2

High Hemizygotes in GnomAd4 at 3 XL gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
CDKL5	NM_001323289.2 linkuse as main transcript	c.1767C>T	p.His589=	synonymous_variant	12/18	ENST00000623535.2	NP_001310218.1
CDKL5	NM_001037343.2 linkuse as main transcript	c.1767C>T	p.His589=	synonymous_variant	13/22		NP_001032420.1
CDKL5	NM_003159.3 linkuse as main transcript	c.1767C>T	p.His589=	synonymous_variant	12/21		NP_003150.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CDKL5	ENST00000623535.2 linkuse as main transcript	c.1767C>T	p.His589=	synonymous_variant	12/18	1	NM_001323289.2	ENSP00000485244	P1	O76039-2

Frequencies

GnomAD3 genomes

AF:

0.0000890

AC:

AN:

112345

Hom.:

Cov.:

AF XY:

0.0000869

AC XY:

AN XY:

34517

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000939

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00331

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000273

AC:

AN:

183207

Hom.:

AF XY:

0.000473

AC XY:

AN XY:

67705

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00262

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.000129

AC:

142

AN:

1097894

Hom.:

Cov.:

AF XY:

0.000201

AC XY:

AN XY:

363252

show subpopulations

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:

0.00236

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000713

Gnomad4 OTH exome

AF:

0.000174

GnomAD4 genome

AF:

0.0000890

AC:

AN:

112399

Hom.:

Cov.:

AF XY:

0.0000868

AC XY:

AN XY:

34581

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.0000937

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00332

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.0000416

ClinVar

Significance: Benign

Submissions summary: Benign:5

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

not specified

Benign:1

Benign, no assertion criteria provided

curation

RettBASE

Mar 13, 2014

- -

Developmental and epileptic encephalopathy, 2

Benign:1

Benign, criteria provided, single submitter

clinical testing

Mendelics

May 28, 2019

- -

CDKL5 disorder

Benign:1

Benign, criteria provided, single submitter

curation

Centre for Population Genomics, CPG

Jul 02, 2024

This variant has been collected from RettBASE and curated to current modified ACMG/AMP criteria. Based on the classification scheme defined by the ClinGen Rett/Angelman-like Expert Panel for Rett/AS-like Disorders Specifications to the ACMG/AMP Variant Interpretation Guidelines VCEP 3.0, this variant is classified as benign. At least the following criteria are met: The allele frequency of this variant in at least one population in gnomAD v3 is higher than the 0.03% threshold defined by the ClinGen Rett/Angelman-like Expert Panel for Rett/AS-like Disorders VCEP 3.0 (BA1). -

not provided

Benign:1

Benign, criteria provided, single submitter

clinical testing

GeneDx

Aug 25, 2020

This variant is associated with the following publications: (PMID: 23242510, 21775177) -

Developmental and epileptic encephalopathy, 2;CN128785:Angelman syndrome-like

Benign:1

Benign, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Oct 18, 2023

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.61

CADD

Benign

0.094

DANN

Benign

0.31

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over