2-209872917-C-T

Variant names:

Variant summary

Our verdict is Pathogenic. The variant received 16 ACMG points: 16P and 0B. PVS1PP5_Very_Strong

The NM_001371986.1(UNC80):c.3787C>T(p.Arg1263*) variant causes a stop gained change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000005 in 1,399,344 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★★). Variant results in nonsense mediated mRNA decay.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000050 ( 0 hom. )

Consequence

UNC80
NM_001371986.1 stop_gained

Scores

Clinical Significance

Pathogenic/Likely pathogenic criteria provided, multiple submitters, no conflicts P:4

Conservation

PhyloP100: 1.62

Publications

2 publications found

Variant links:

Genes affected

UNC80 (HGNC:26582): (unc-80 homolog, NALCN channel complex subunit) The protein encoded by this gene is a component of a voltage-independent 'leak' ion-channel complex, in which it performs essential functions, such as serving as a bridge between two other components (sodium leak channel non-selective and UNC79) and as a scaffold for Src kinases. Leak channels play an importnat role in establishment and maintenance of resting membrane potentials in neurons. Mutations in this gene are associated with congenital infantile encephalopathy, intellectual disability and growth issues. [provided by RefSeq, Aug 2016]

UNC80 Gene-Disease associations (from GenCC):

hypotonia, infantile, with psychomotor retardation and characteristic facies 2
Inheritance: AR, AD Classification: DEFINITIVE, STRONG Submitted by: Labcorp Genetics (formerly Invitae), Illumina, ClinGen
hypotonia, infantile, with psychomotor retardation and characteristic facies
Inheritance: AR Classification: SUPPORTIVE Submitted by: Orphanet

UNC80 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Pathogenic. The variant received 16 ACMG points.

PVS1

Loss of function variant, product undergoes nonsense mediated mRNA decay. LoF is a known mechanism of disease.

PP5

Variant 2-209872917-C-T is Pathogenic according to our data. Variant chr2-209872917-C-T is described in ClinVar as Pathogenic/Likely_pathogenic. ClinVar VariationId is 219188.Status of the report is criteria_provided_multiple_submitters_no_conflicts, 2 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
UNC80	NM_001371986.1 link	c.3787C>T	p.Arg1263*	stop_gained	Exon 23 of 65	ENST00000673920.1	NP_001358915.1
UNC80	NM_032504.2 link	c.3793C>T	p.Arg1265*	stop_gained	Exon 23 of 64		NP_115893.1	Q8N2C7-1
UNC80	NM_182587.4 link	c.3778C>T	p.Arg1260*	stop_gained	Exon 23 of 63		NP_872393.3	Q8N2C7-7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
UNC80	ENST00000673920.1 link	c.3787C>T	p.Arg1263*	stop_gained	Exon 23 of 65		NM_001371986.1	ENSP00000501211.1		A0A669KBC5

Frequencies

GnomAD3 genomes

Cov.:

GnomAD2 exomes

AF:

0.00000639

AC:

AN:

156454

AF XY:

0.00

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000405

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000500

AC:

AN:

1399344

Hom.:

Cov.:

AF XY:

0.00000435

AC XY:

AN XY:

690182

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

31594

American (AMR)

AF:

0.0000280

AC:

AN:

35700

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25180

East Asian (EAS)

AF:

0.00

AC:

AN:

35738

South Asian (SAS)

AF:

0.00

AC:

AN:

79230

European-Finnish (FIN)

AF:

0.00

AC:

AN:

49276

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5698

European-Non Finnish (NFE)

AF:

0.00000556

AC:

AN:

1078934

Other (OTH)

AF:

0.00

AC:

AN:

57994

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.432

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

Cov.:

Alfa

AF:

0.0000160

Hom.:

ClinVar

Significance: Pathogenic/Likely pathogenic

Submissions summary: Pathogenic:4

Revision: criteria provided, multiple submitters, no conflicts

LINK: link

Submissions by phenotype

Hypotonia, infantile, with psychomotor retardation and characteristic facies 2

Pathogenic:2

Pathology and Clinical Laboratory Medicine, King Fahad Medical City

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Jan 07, 2016

OMIM

Significance:Pathogenic

Review Status:no assertion criteria provided

Collection Method:literature only

- -

not provided

Pathogenic:1

Aug 22, 2023

GeneDx

Significance:Pathogenic

Review Status:criteria provided, single submitter

Collection Method:clinical testing

Nonsense variant predicted to result in protein truncation or nonsense mediated decay in a gene for which loss of function is a known mechanism of disease; Not observed at significant frequency in large population cohorts (gnomAD); This variant is associated with the following publications: (PMID: 32552793, 33101984, 26708753) -

Encephalopathy

Pathogenic:1

Mar 19, 2015

Genomic Medicine Center of Excellence, King Faisal Specialist Hospital and Research Centre

Significance:Likely pathogenic

Review Status:criteria provided, single submitter

Collection Method:research

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

BayesDel_addAF

Pathogenic

0.54

BayesDel_noAF

Pathogenic

0.56

CADD

Pathogenic

(source)

DANN

Uncertain

1.0

Eigen

Uncertain

0.60

Eigen_PC

Uncertain

0.43

FATHMM_MKL

Uncertain

0.82

PhyloP100

1.6

Vest4

0.57

GERP RS

4.7

Mutation Taster

=2/198

disease causing (ClinVar)

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.0

Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

You must be logged in to view publications. This limit was set because tens of millions (!) of queries from AI bots are generated daily.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over