chrX-18507107-C-G

Position:

• chrX-18507107-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001323289.2(CDKL5):​c.11C>G​(p.Pro4Arg) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency: Genomes: not found (cov: 23)
• Consequence: CDKL5 NM_001323289.2 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.95

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]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CDKL5	NM_001323289.2	c.11C>G	p.Pro4Arg	missense_variant	2/18	ENST00000623535.2	NP_001310218.1
CDKL5	NM_001037343.2	c.11C>G	p.Pro4Arg	missense_variant	3/22		NP_001032420.1
CDKL5	NM_003159.3	c.11C>G	p.Pro4Arg	missense_variant	2/21		NP_003150.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CDKL5	ENST00000623535.2	c.11C>G	p.Pro4Arg	missense_variant	2/18	1	NM_001323289.2	ENSP00000485244.1

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome Cov.: 26

GnomAD4 genome Cov.: 23

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 27, 2024

De novo variant with confirmed parentage in a patient referred for genetic testing at GeneDx; however, the reported clinical features are only partially consistent with the features typically observed in individuals with pathogenic variants in this gene; Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis indicates 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	0.33
BayesDel_addAF	Pathogenic	0.19	D
BayesDel_noAF	Uncertain	0.030
CADD	Pathogenic	26
DANN	Uncertain	1.0
DEOGEN2	Benign	0.067	T;T;.;T;T;.;.;.;.
FATHMM_MKL	Pathogenic	0.98	D
LIST_S2	Benign	0.83	.;T;T;T;.;T;T;T;T
M_CAP	Pathogenic	0.85	D
MetaRNN	Uncertain	0.69	D;D;D;D;D;D;D;D;D
MetaSVM	Uncertain	-0.15	T
MutationAssessor	Benign	1.9	L;.;.;L;.;.;.;.;L
PrimateAI	Pathogenic	0.89	D
PROVEAN	Benign	-2.1	N;.;.;N;.;.;.;.;.
REVEL	Uncertain	0.43
Sift	Uncertain	0.0010	D;.;.;D;.;.;.;.;.
Sift4G	Uncertain	0.0070	D;.;.;D;.;T;T;T;D
Polyphen		1.0	D;.;.;D;.;.;.;.;.
Vest4		0.39
MutPred		0.45		Gain of MoRF binding (P = 1e-04);Gain of MoRF binding (P = 1e-04);Gain of MoRF binding (P = 1e-04);Gain of MoRF binding (P = 1e-04);Gain of MoRF binding (P = 1e-04);Gain of MoRF binding (P = 1e-04);Gain of MoRF binding (P = 1e-04);Gain of MoRF binding (P = 1e-04);Gain of MoRF binding (P = 1e-04);
MVP		0.86
MPC		2.5
ClinPred		0.92	D
GERP RS		5.4
Varity_R		0.39
gMVP		0.86

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

No publications associated with this variant yet.

Other links and lift over

hg19: chrX-18525227;