X-18579749-C-A

Variant summary

Our verdict is Benign. The variant received -20 ACMG points: 0P and 20B. BP4_StrongBP6_Very_StrongBA1

The NM_001323289.2(CDKL5):​c.283-99C>A variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.314 in 781,995 control chromosomes in the GnomAD database, including 28,867 homozygotes. There are 71,175 hemizygotes in GnomAD. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★★).

Frequency

Genomes: 𝑓 0.28 ( 3433 hom., 9251 hem., cov: 23)
Exomes 𝑓: 0.32 ( 25434 hom. 61924 hem. )

Consequence

CDKL5
NM_001323289.2 intron

Scores

2

Clinical Significance

Benign criteria provided, multiple submitters, no conflicts B:4O:1

Conservation

PhyloP100: -0.739
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]

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ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -20 ACMG points.

BP4
Computational evidence support a benign effect (BayesDel_noAF=-0.82).
BP6
Variant X-18579749-C-A is Benign according to our data. Variant chrX-18579749-C-A is described in ClinVar as [Benign]. Clinvar id is 156085.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.
BA1
GnomAd4 highest subpopulation (EAS) allele frequency at 95% confidence interval = 0.439 is higher than 0.05.

Transcripts

RefSeq

Gene Transcript HGVSc HGVSp Effect Exon rank MANE Protein UniProt
CDKL5NM_001323289.2 linkc.283-99C>A intron_variant Intron 5 of 17 ENST00000623535.2 NP_001310218.1 O76039-2
CDKL5NM_001037343.2 linkc.283-99C>A intron_variant Intron 6 of 21 NP_001032420.1 O76039-1
CDKL5NM_003159.3 linkc.283-99C>A intron_variant Intron 5 of 20 NP_003150.1 O76039-1

Ensembl

Gene Transcript HGVSc HGVSp Effect Exon rank TSL MANE Protein Appris UniProt
CDKL5ENST00000623535.2 linkc.283-99C>A intron_variant Intron 5 of 17 1 NM_001323289.2 ENSP00000485244.1 O76039-2

Frequencies

GnomAD3 genomes
AF:
0.283
AC:
31182
AN:
110051
Hom.:
3437
Cov.:
23
show subpopulations
Gnomad AFR
AF:
0.165
Gnomad AMI
AF:
0.266
Gnomad AMR
AF:
0.425
Gnomad ASJ
AF:
0.410
Gnomad EAS
AF:
0.459
Gnomad SAS
AF:
0.411
Gnomad FIN
AF:
0.260
Gnomad MID
AF:
0.285
Gnomad NFE
AF:
0.302
Gnomad OTH
AF:
0.283
GnomAD4 exome
AF:
0.319
AC:
214153
AN:
671895
Hom.:
25434
AF XY:
0.337
AC XY:
61924
AN XY:
183723
show subpopulations
Gnomad4 AFR exome
AF:
0.152
AC:
2601
AN:
17061
Gnomad4 AMR exome
AF:
0.523
AC:
14547
AN:
27820
Gnomad4 ASJ exome
AF:
0.392
AC:
6007
AN:
15323
Gnomad4 EAS exome
AF:
0.465
AC:
12650
AN:
27215
Gnomad4 SAS exome
AF:
0.413
AC:
16360
AN:
39630
Gnomad4 FIN exome
AF:
0.270
AC:
10155
AN:
37625
Gnomad4 NFE exome
AF:
0.298
AC:
141111
AN:
473233
Gnomad4 Remaining exome
AF:
0.315
AC:
9806
AN:
31175
Heterozygous variant carriers
0
5002
10003
15005
20006
25008
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
Exome Het
Exome Hom
Variant carriers
0
3842
7684
11526
15368
19210
<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
AF:
0.283
AC:
31182
AN:
110100
Hom.:
3433
Cov.:
23
AF XY:
0.285
AC XY:
9251
AN XY:
32450
show subpopulations
Gnomad4 AFR
AF:
0.165
AC:
0.164878
AN:
0.164878
Gnomad4 AMR
AF:
0.426
AC:
0.425649
AN:
0.425649
Gnomad4 ASJ
AF:
0.410
AC:
0.410354
AN:
0.410354
Gnomad4 EAS
AF:
0.458
AC:
0.458213
AN:
0.458213
Gnomad4 SAS
AF:
0.414
AC:
0.413583
AN:
0.413583
Gnomad4 FIN
AF:
0.260
AC:
0.259954
AN:
0.259954
Gnomad4 NFE
AF:
0.302
AC:
0.30223
AN:
0.30223
Gnomad4 OTH
AF:
0.283
AC:
0.282565
AN:
0.282565
Heterozygous variant carriers
0
798
1596
2394
3192
3990
0.00
0.20
0.40
0.60
0.80
0.95
Allele balance
Genome Het
Genome Hom
Variant carriers
0
328
656
984
1312
1640
<30
30-35
35-40
40-45
45-50
50-55
55-60
60-65
65-70
70-75
75-80
>80
Age
Alfa
AF:
0.168
Hom.:
897
Bravo
AF:
0.298

ClinVar

Significance: Benign
Submissions summary: Benign:4Other:1
Revision: criteria provided, multiple submitters, no conflicts
LINK: link

Submissions by phenotype

not provided Benign:2Other:1
-
Breakthrough Genomics, Breakthrough Genomics
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:not provided

- -

Jun 14, 2018
GeneDx
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:clinical testing

This variant is considered likely benign or benign based on one or more of the following criteria: it is a conservative change, it occurs at a poorly conserved position in the protein, it is predicted to be benign by multiple in silico algorithms, and/or has population frequency not consistent with disease. -

-
RettBASE
Significance:not provided
Review Status:flagged submission
Collection Method:literature only

- -

not specified Benign:1
Mar 13, 2014
RettBASE
Significance:Benign
Review Status:no assertion criteria provided
Collection Method:curation

Common SNP -

CDKL5 disorder Benign:1
Jul 12, 2024
Centre for Population Genomics, CPG
Significance:Benign
Review Status:criteria provided, single submitter
Collection Method:curation

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 v4 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). -

Computational scores

Source: dbNSFP v4.3

Name
Calibrated prediction
Score
Prediction
BayesDel_noAF
Benign
-0.82
CADD
Benign
0.074
DANN
Benign
0.56
Mutation Taster
=100/0
polymorphism (auto)

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.

Other links and lift over

dbSNP: rs4825261; hg19: chrX-18597869; COSMIC: COSV66110067; COSMIC: COSV66110067; API