NM_015443.4(KANSL1):c.620A>T (p.Asn207Ile) AND Koolen-de Vries syndrome

Germline classification:: Uncertain significance (1 submission)
Last evaluated:: Mar 28, 2019
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:: RCV001052588.6

Allele description [Variation Report for NM_015443.4(KANSL1):c.620A>T (p.Asn207Ile)]

NM_015443.4(KANSL1):c.620A>T (p.Asn207Ile)

Gene:

KANSL1:KAT8 regulatory NSL complex subunit 1 [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

17q21.31

Genomic location:

Preferred name:

NM_015443.4(KANSL1):c.620A>T (p.Asn207Ile)

HGVS:

NC_000017.11:g.46171524T>A
NG_032784.1:g.58851A>T
NM_001193465.2:c.620A>T
NM_001193466.2:c.620A>T
NM_001379198.1:c.620A>T
NM_015443.4:c.620A>TMANE SELECT
NP_001180394.1:p.Asn207Ile
NP_001180395.1:p.Asn207Ile
NP_001366127.1:p.Asn207Ile
NP_056258.1:p.Asn207Ile
NC_000017.10:g.44248890T>A
NM_001193466.1:c.620A>T

Protein change:

N207I

Links:

dbSNP: rs144882998

NCBI 1000 Genomes Browser:

rs144882998

Molecular consequence:

NM_001193465.2:c.620A>T - missense variant - [Sequence Ontology: SO:0001583]
NM_001193466.2:c.620A>T - missense variant - [Sequence Ontology: SO:0001583]
NM_001379198.1:c.620A>T - missense variant - [Sequence Ontology: SO:0001583]
NM_015443.4:c.620A>T - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:: Koolen-de Vries syndrome (KDVS)
Synonyms:: KANSL1-Related Intellectual Disability Syndrome
Identifiers:: MONDO: MONDO:0012496; MedGen: C1864871; Orphanet: 96169; OMIM: 610443

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV001216806	Invitae	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Uncertain significance (Mar 28, 2019)	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

SCV001216806

Invitae

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Uncertain significance
(Mar 28, 2019)

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):240-242.

PubMed [citation]

PMID:: 28492532
PMCID:: PMC5632818

Details of each submission

From Invitae, SCV001216806.5

#	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. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C15"). This variant has not been reported in the literature in individuals with KANSL1-related conditions. ClinVar contains an entry for this variant (Variation ID: 386241). This variant is not present in population databases (ExAC no frequency). This sequence change replaces asparagine with isoleucine at codon 207 of the KANSL1 protein (p.Asn207Ile). The asparagine residue is highly conserved and there is a large physicochemical difference between asparagine and isoleucine.

#	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: Feb 28, 2024

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