NM_001323289.2(CDKL5):c.1766A>G (p.His589Arg) AND multiple conditions

Germline classification:: Uncertain significance (1 submission)
Last evaluated:: Feb 26, 2021
Review status:: 1 star out of maximum of 4 stars
criteria provided, single submitter

Somatic classification of clinical impact:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Somatic classification of oncogenicity:: None
Review status:: (0/4) 0 stars out of maximum of 4 stars
no assertion criteria provided

Record status:: current
Accession:: RCV002046363.6

Allele description [Variation Report for NM_001323289.2(CDKL5):c.1766A>G (p.His589Arg)]

NM_001323289.2(CDKL5):c.1766A>G (p.His589Arg)

Gene:

CDKL5:cyclin dependent kinase like 5 [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

Xp22.13

Genomic location:

Preferred name:

NM_001323289.2(CDKL5):c.1766A>G (p.His589Arg)

HGVS:

NC_000023.11:g.18604690A>G
NG_008475.1:g.184086A>G
NM_001037343.2:c.1766A>G
NM_001323289.2:c.1766A>GMANE SELECT
NM_003159.3:c.1766A>G
NP_001032420.1:p.His589Arg
NP_001310218.1:p.His589Arg
NP_003150.1:p.His589Arg
NC_000023.10:g.18622810A>G

Protein change:

H589R

Links:

dbSNP: rs2147161126

NCBI 1000 Genomes Browser:

rs2147161126

Molecular consequence:

NM_001037343.2:c.1766A>G - missense variant - [Sequence Ontology: SO:0001583]
NM_001323289.2:c.1766A>G - missense variant - [Sequence Ontology: SO:0001583]
NM_003159.3:c.1766A>G - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:: Developmental and epileptic encephalopathy, 2 (DEE2)
Synonyms:: INFANTILE SPASM SYNDROME, X-LINKED 2; Early infantile epileptic encephalopathy 2
Identifiers:: MONDO: MONDO:0010396; MedGen: C4750718; Orphanet: 1934; Orphanet: 3451; OMIM: 300672

Name:: Angelman syndrome-like
Identifiers:: MedGen: CN128785

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV002317170	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Uncertain significance (Feb 26, 2021)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]

Submission Accession

Submitter

Review Status
(Assertion method)

Clinical Significance
(Last evaluated)

Origin

Method

Citations

SCV002317170

Labcorp Genetics (formerly Invitae), Labcorp

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Uncertain significance
(Feb 26, 2021)

germline

clinical testing

PubMed (1)
[See all records that cite this PMID]

Help

Summary from all submissions

Ethnicity	Origin	Affected	Individuals	Families	Chromosomes tested	Number Tested	Family history	Method
not provided	germline	unknown	not provided	not provided	not provided	not provided	not provided	clinical testing

Citations

PubMed

Sherloc: a comprehensive refinement of the ACMG-AMP variant classification criteria.

Nykamp K, Anderson M, Powers M, Garcia J, Herrera B, Ho YY, Kobayashi Y, Patil N, Thusberg J, Westbrook M; Invitae Clinical Genomics Group., Topper S.

Genet Med. 2017 Oct;19(10):1105-1117. doi: 10.1038/gim.2017.37. Epub 2017 May 11. Erratum in: Genet Med. 2020 Jan;22(1):240. doi: 10.1038/s41436-019-0624-9.

PubMed [citation]

PMID:: 28492532
PMCID:: PMC5632818

Details of each submission

From Labcorp Genetics (formerly Invitae), Labcorp, SCV002317170.3

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (1)

Description

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt CDKL5 protein function. This variant has not been reported in the literature in individuals with CDKL5-related conditions. This variant is not present in population databases (ExAC no frequency). This sequence change replaces histidine with arginine at codon 589 of the CDKL5 protein (p.His589Arg). The histidine residue is highly conserved and there is a small physicochemical difference between histidine and arginine.

#	Sample				Method		Observation
#	Origin	Affected	Number tested	Tissue	Purpose	Method	Individuals	Allele frequency	Families	Co-occurrences
1	germline	unknown	not provided	not provided	not provided		not provided	not provided	not provided	not provided

Last Updated: Sep 29, 2024

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