NM_172362.3(KCNH1):c.2162T>C (p.Met721Thr) AND multiple conditions

Germline classification:: Uncertain significance (1 submission)
Last evaluated:: Jul 22, 2022
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:: RCV003224614.1

Allele description [Variation Report for NM_172362.3(KCNH1):c.2162T>C (p.Met721Thr)]

NM_172362.3(KCNH1):c.2162T>C (p.Met721Thr)

Gene:

KCNH1:potassium voltage-gated channel subfamily H member 1 [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

1q32.2

Genomic location:

Preferred name:

NM_172362.3(KCNH1):c.2162T>C (p.Met721Thr)

HGVS:

NC_000001.11:g.210684089A>G
NG_029777.2:g.455027T>C
NM_002238.4:c.2081T>C
NM_172362.2:c.2162T>C
NM_172362.3:c.2162T>CMANE SELECT
NP_002229.1:p.Met694Thr
NP_758872.1:p.Met721Thr
NC_000001.10:g.210857431A>G

Protein change:

M694T

Links:

dbSNP: rs140043333

NCBI 1000 Genomes Browser:

rs140043333

Molecular consequence:

NM_002238.4:c.2081T>C - missense variant - [Sequence Ontology: SO:0001583]
NM_172362.3:c.2162T>C - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:: Zimmermann-Laband syndrome 1 (ZLS1)
Synonyms:: Laband syndrome; Gingival fibromatosis, abnormal fingers, fingernails, nose and ears, and splenomegaly; Fibromatosis gingival, hepatosplenomegaly other anomalies
Identifiers:: MONDO: MONDO:0024526; MedGen: C4551773; Orphanet: 3473; OMIM: 135500

Name:: Temple-Baraitser syndrome (TMBTS)
Synonyms:: Severe mental retardation and absent nails of hallux and pollex
Identifiers:: MONDO: MONDO:0012735; MedGen: C2678486; Orphanet: 420561; OMIM: 611816

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV003920091	Center for Genomics, Ann and Robert H. Lurie Children's Hospital of Chicago	criteria provided, single submitter (ACMG Guidelines, 2015)	Uncertain significance (Jul 22, 2022)	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

SCV003920091

Center for Genomics, Ann and Robert H. Lurie Children's Hospital of Chicago

criteria provided, single submitter

(ACMG Guidelines, 2015)

Uncertain significance
(Jul 22, 2022)

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

Standards and guidelines for the interpretation of sequence variants: a joint consensus recommendation of the American College of Medical Genetics and Genomics and the Association for Molecular Pathology.

Richards S, Aziz N, Bale S, Bick D, Das S, Gastier-Foster J, Grody WW, Hegde M, Lyon E, Spector E, Voelkerding K, Rehm HL; ACMG Laboratory Quality Assurance Committee..

Genet Med. 2015 May;17(5):405-24. doi: 10.1038/gim.2015.30. Epub 2015 Mar 5.

PubMed [citation]

PMID:: 25741868
PMCID:: PMC4544753

Details of each submission

From Center for Genomics, Ann and Robert H. Lurie Children's Hospital of Chicago, SCV003920091.1

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

Description

This variant has not been reported in the literature but is present in the Genome Aggregation Database (Highest reported MAF 0.02% (17/68020) (https://gnomad.broadinstitute.org/variant/1-210684089-A-G?dataset=gnomad_r3). Evolutionary conservation and computational predictive tools suggest that this variant may not impact the protein. In summary, data on this variant is insufficient for disease classification. Therefore, the clinical significance of this variant is uncertain.

#	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: May 12, 2024

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