NM_052876.4(NACC1):c.892C>T (p.Arg298Trp) AND not provided

Germline classification:: Pathogenic (3 submissions)
Last evaluated:: Apr 10, 2024
Review status:: 2 stars out of maximum of 4 stars
criteria provided, multiple submitters, no conflicts

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:: RCV000522576.13

Allele description [Variation Report for NM_052876.4(NACC1):c.892C>T (p.Arg298Trp)]

NM_052876.4(NACC1):c.892C>T (p.Arg298Trp)

Gene:

NACC1:nucleus accumbens associated 1 [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

19p13.13

Genomic location:

Preferred name:

NM_052876.4(NACC1):c.892C>T (p.Arg298Trp)

HGVS:

NC_000019.10:g.13136099C>T
NM_052876.4:c.892C>TMANE SELECT
NP_443108.1:p.Arg298Trp
NC_000019.9:g.13246913C>T
NM_052876.2:c.892C>T
NM_052876.3:c.892C>T
p.R298W

Protein change:

R298W; ARG298TRP

Links:

OMIM: 610672.0001; dbSNP: rs1060505041

NCBI 1000 Genomes Browser:

rs1060505041

Molecular consequence:

NM_052876.4:c.892C>T - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Synonyms:: none provided; RECLASSIFIED - ADRA2C POLYMORPHISM; RECLASSIFIED - ADRB1 POLYMORPHISM
Identifiers:: MedGen: C3661900

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV000617944	GeneDx	criteria provided, single submitter (GeneDx Variant Classification Process June 2021)	Pathogenic (Feb 14, 2023)	germline	clinical testing	Citation Link,
SCV001447350	Institute of Medical Genetics and Applied Genomics, University Hospital Tübingen	criteria provided, single submitter (ACMG Guidelines, 2015)	Pathogenic (Oct 23, 2020)	germline	clinical testing	PubMed (1) [See all records that cite this PMID]
SCV001580866	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Pathogenic (Apr 10, 2024)	germline	clinical testing	PubMed (2) [See all records that cite these PMIDs] 28132692, 28492532

Submission Accession

Submitter

Review Status
(Assertion method)

Clinical Significance
(Last evaluated)

Origin

Method

Citations

SCV000617944

GeneDx

criteria provided, single submitter

(GeneDx Variant Classification Process June 2021)

Pathogenic
(Feb 14, 2023)

germline

clinical testing

Citation Link,

SCV001447350

Institute of Medical Genetics and Applied Genomics, University Hospital Tübingen

criteria provided, single submitter

(ACMG Guidelines, 2015)

Pathogenic
(Oct 23, 2020)

germline

clinical testing

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

SCV001580866

Labcorp Genetics (formerly Invitae), Labcorp

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Pathogenic
(Apr 10, 2024)

germline

clinical testing

PubMed (2)
[See all records that cite these PMIDs]

Help

Summary from all submissions

Ethnicity	Origin	Affected	Individuals	Families	Chromosomes tested	Number Tested	Family history	Method
not provided	germline	yes	not provided	not provided	not provided	1	not provided	clinical testing
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

A Recurrent De Novo Variant in NACC1 Causes a Syndrome Characterized by Infantile Epilepsy, Cataracts, and Profound Developmental Delay.

Schoch K, Meng L, Szelinger S, Bearden DR, Stray-Pedersen A, Busk OL, Stong N, Liston E, Cohn RD, Scaglia F, Rosenfeld JA, Tarpinian J, Skraban CM, Deardorff MA, Friedman JN, Akdemir ZC, Walley N, Mikati MA, Kranz PG, Jasien J, McConkie-Rosell A, McDonald M, et al.

Am J Hum Genet. 2017 Feb 2;100(2):343-351. doi: 10.1016/j.ajhg.2016.12.013. Epub 2017 Jan 26.

PubMed [citation]

PMID:: 28132692
PMCID:: PMC5294886

See all PubMed Citations (3)

Details of each submission

From GeneDx, SCV000617944.2

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

Description

In silico analysis, which includes protein predictors and evolutionary conservation, supports a deleterious effect; Not observed in large population cohorts (gnomAD); This variant is associated with the following publications: (PMID: 31231135, 31628766, 30842647, 31036916, 31216405, 28132692, 34869110)

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

From Institute of Medical Genetics and Applied Genomics, University Hospital Tübingen, SCV001447350.2

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

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

From Labcorp Genetics (formerly Invitae), Labcorp, SCV001580866.5

#	Ethnicity	Individuals	Chromosomes Tested	Family History	Method	Citations
1	not provided	not provided	not provided	not provided	clinical testing	PubMed (2)

Description

This sequence change replaces arginine, which is basic and polar, with tryptophan, which is neutral and slightly polar, at codon 298 of the NACC1 protein (p.Arg298Trp). This variant is not present in population databases (gnomAD no frequency). This missense change has been observed in individual(s) with infantile epilepsy, cataracts, and profound developmental delay (PMID: 28132692). In at least one individual the variant was observed to be de novo. ClinVar contains an entry for this variant (Variation ID: 417784). 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 NACC1 protein function with a negative predictive value of 80%. For these reasons, this variant has been classified as Pathogenic.

#	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: Apr 20, 2025

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