rs36022183

chrX-18653454-C-GchrX-18653454-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2 BP4_Strong

The ENST00000379989.6(CDKL5):c.3003C>G(p.His1001Gln) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 13/18 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as not provided (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. H1001D) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 23)
• Consequence: CDKL5 ENST00000379989.6 missense
• Clinical Significance: not provided no classification provided O:1
• Conservation: PhyloP100: -0.0460

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]

RS1 (HGNC:10457): (retinoschisin 1) This gene encodes an extracellular protein that plays a crucial role in the cellular organization of the retina. The encoded protein is assembled and secreted from photoreceptors and bipolar cells as a homo-oligomeric protein complex. Mutations in this gene are responsible for X-linked retinoschisis, a common, early-onset macular degeneration in males that results in a splitting of the inner layers of the retina and severe loss in vision. [provided by RefSeq, Oct 2008]

ACMG classification

Verdict is Likely_benign. Variant got -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.03431341).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RS1	NM_000330.4	c.184+3199G>C		intron_variant		ENST00000379984.4
CDKL5	NM_001037343.2	c.3003C>G	p.His1001Gln	missense_variant	22/22
CDKL5	NM_003159.3	c.3003C>G	p.His1001Gln	missense_variant	21/21

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CDKL5	ENST00000379989.6	c.3003C>G	p.His1001Gln	missense_variant	22/22	1
CDKL5	ENST00000379996.7	c.3003C>G	p.His1001Gln	missense_variant	21/21	1
RS1	ENST00000379984.4	c.184+3199G>C		intron_variant		1	NM_000330.4	P1
CDKL5	ENST00000673617.1	n.275C>G		non_coding_transcript_exon_variant	3/3

Frequencies

GnomAD3 genomes Cov.: 23

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 23

ClinVar

Significance: not provided

Submissions summary: Other:1

Revision: no classification provided

Submissions by phenotype

not provided Other:1

not provided, no classification provided

literature only

RettBASE

-

- -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_addAF	Benign	-0.46	T
BayesDel_noAF	Benign	-0.89
Cadd	Benign	0.076
Dann	Benign	0.54
DEOGEN2	Benign	0.029	T;T
FATHMM_MKL	Benign	0.00024	N
M_CAP	Benign	0.058	D
MetaRNN	Benign	0.034	T;T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	0.0	N;N
MutationTaster	Benign	1.0	N;N;N
PrimateAI	Benign	0.25	T
PROVEAN	Benign	-0.24	N;N
REVEL	Benign	0.057
Sift	Benign	1.0	T;T
Sift4G	Pathogenic	0.0	D;D
Polyphen		0.0	B;B
Vest4		0.038
MutPred		0.22		Loss of catalytic residue at H1001 (P = 0.0275);Loss of catalytic residue at H1001 (P = 0.0275);
MVP		0.19
MPC		0.57
ClinPred		0.027	T
GERP RS		-0.56
Varity_R		0.049
gMVP		0.054

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

Other links and lift over

dbSNP: rs36022183; hg19: chrX-18671574;