NM_002485.5(NBN):c.1470A>C (p.Leu490Phe) AND Microcephaly, normal intelligence and immunodeficiency

Germline classification:: Uncertain significance (1 submission)
Last evaluated:: Sep 4, 2018
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:: RCV000820960.7

Allele description [Variation Report for NM_002485.5(NBN):c.1470A>C (p.Leu490Phe)]

NM_002485.5(NBN):c.1470A>C (p.Leu490Phe)

Gene:

NBN:nibrin [Gene - OMIM - HGNC]

Variant type:

single nucleotide variant

Cytogenetic location:

8q21.3

Genomic location:

Preferred name:

NM_002485.5(NBN):c.1470A>C (p.Leu490Phe)

HGVS:

NC_000008.11:g.89953619T>G
NG_008860.1:g.36053A>C
NM_001024688.3:c.1224A>C
NM_002485.5:c.1470A>CMANE SELECT
NP_001019859.1:p.Leu408Phe
NP_002476.2:p.Leu490Phe
NP_002476.2:p.Leu490Phe
LRG_158t1:c.1470A>C
LRG_158:g.36053A>C
LRG_158p1:p.Leu490Phe
NC_000008.10:g.90965847T>G
NM_002485.4:c.1470A>C

Protein change:

L408F

Links:

dbSNP: rs1447979380

NCBI 1000 Genomes Browser:

rs1447979380

Molecular consequence:

NM_001024688.3:c.1224A>C - missense variant - [Sequence Ontology: SO:0001583]
NM_002485.5:c.1470A>C - missense variant - [Sequence Ontology: SO:0001583]

Condition(s)

Name:: Microcephaly, normal intelligence and immunodeficiency (NBS)
Synonyms:: IMMUNODEFICIENCY, MICROCEPHALY, AND CHROMOSOMAL INSTABILITY; SEEMANOVA SYNDROME II; Nijmegen breakage syndrome; See all synonyms [MedGen]
Identifiers:: MONDO: MONDO:0009623; MedGen: C0398791; Orphanet: 647; OMIM: 251260

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Homo sapiens isolate:CHM13
Homo sapiens isolate:CHM13
Homo sapiens isolate:CHM13 RefSeq Genome sequencing and assembly

BioProject
Taxonomy Links for Protein (Select 2462511574) (1)
Taxonomy
BioProject Links for Protein (Select 2462511574) (1)
BioProject
unnamed protein product [Homo sapiens]
unnamed protein product [Homo sapiens]
gi|194381000|dbj|BAG64068.1|

Protein

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Submission Accession	Submitter	Review Status (Assertion method)	Clinical Significance (Last evaluated)	Origin	Method	Citations
SCV000961699	Labcorp Genetics (formerly Invitae), Labcorp	criteria provided, single submitter (Invitae Variant Classification Sherloc (09022015))	Uncertain significance (Sep 4, 2018)	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

SCV000961699

Labcorp Genetics (formerly Invitae), Labcorp

criteria provided, single submitter

(Invitae Variant Classification Sherloc (09022015))

Uncertain significance
(Sep 4, 2018)

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, SCV000961699.4

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

Description

This sequence change replaces leucine with phenylalanine at codon 490 of the NBN protein (p.Leu490Phe). The leucine residue is weakly conserved and there is a small physicochemical difference between leucine and phenylalanine. 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: "Tolerated"; PolyPhen-2: "Possibly Damaging"; Align-GVGD: "Class C0"). This variant has not been reported in the literature in individuals with NBN-related disease. This variant is not present in population databases (ExAC no frequency).

#	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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