14-95133400-G-A

Position:

chr14-95133400-G-A

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BS1BS2BP4

This summary comes from the ClinGen Evidence Repository: The NM_177438.2:c.59C>T is a missense variant in DICER1 predicted to cause substitution of Alanine by Valine at amino acid 20 (p.Ala20Val). The highest population minor allele frequency in gnomAD v2.1.1 is 0.0009673 in the non-Finnish European population, which is higher than the ClinGen DICER1 VCEP threshold (>0.0003) for BS1, and therefore meets this criterion (BS1). This variant has been observed in 40 or more unrelated females without tumors through age 50 in at least one testing laboratory (Internal lab contributors GTRs: 61756, 500031) and has been observed in a homozygous state in 3 healthy individuals (Internal lab contributors GTR: 500031)(BS2). The computational predictor REVEL gives a score of 0.302, which is below the threshold of 0.5, and the splice site predictors MaxEntScan and SpliceAI indicate that the variant has no impact on splicing, evidence that does not predict a damaging effect on DICER1 function (BP4). In summary, this variant meets the criteria to be classified as benign for DICER1 syndrome based on the ACMG/AMP criteria applied, as specified by the ClinGen DICER1 VCEP: BS1, BS2, BP4. (Bayesian Points: -9; VCEP specifications version 1; 02/11/2022). LINK:https://erepo.genome.network/evrepo/ui/classification/CA332140/MONDO:0017288/024

Frequency

Genomes: 𝑓 0.00069 ( 0 hom., cov: 33)

Exomes 𝑓: 0.0011 ( 2 hom. )

Consequence

DICER1
NM_177438.3 missense

Scores

Clinical Significance

Benign reviewed by expert panel U:1B:12O:1

Conservation

PhyloP100: 9.47

Variant links:

Genes affected

DICER1 (HGNC:17098): (dicer 1, ribonuclease III) This gene encodes a protein possessing an RNA helicase motif containing a DEXH box in its amino terminus and an RNA motif in the carboxy terminus. The encoded protein functions as a ribonuclease and is required by the RNA interference and small temporal RNA (stRNA) pathways to produce the active small RNA component that represses gene expression. This protein also acts as a strong antiviral agent with activity against RNA viruses, including the Zika and SARS-CoV-2 viruses. Alternative splicing results in multiple transcript variants. [provided by RefSeq, Jul 2021]

DICER1 links:

DICER1 (HGNC:):

DICER1 links:

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ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -9 ACMG points.

BP4

For more information check the summary or visit ClinGen Evidence Repository.

BS1

For more information check the summary or visit ClinGen Evidence Repository.

BS2

For more information check the summary or visit ClinGen Evidence Repository.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
DICER1	NM_177438.3 linkuse as main transcript	c.59C>T	p.Ala20Val	missense_variant	2/27	ENST00000343455.8	NP_803187.1	Q9UPY3-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DICER1	ENST00000343455.8 linkuse as main transcript	c.59C>T	p.Ala20Val	missense_variant	2/27	1	NM_177438.3	ENSP00000343745.3		Q9UPY3-1

Frequencies

GnomAD3 genomes

AF:

0.000690

AC:

105

AN:

152212

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000193

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000524

Gnomad ASJ

AF:

0.00288

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.000282

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.00109

Gnomad OTH

AF:

0.000956

GnomAD3 exomes

AF:

0.000651

AC:

162

AN:

248888

Hom.:

AF XY:

0.000564

AC XY:

AN XY:

134736

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.000377

Gnomad ASJ exome

AF:

0.00358

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000654

Gnomad FIN exome

AF:

0.0000925

Gnomad NFE exome

AF:

0.000907

Gnomad OTH exome

AF:

0.00114

GnomAD4 exome

AF:

0.00110

AC:

1614

AN:

1461718

Hom.:

Cov.:

AF XY:

0.00110

AC XY:

800

AN XY:

727150

show subpopulations

Gnomad4 AFR exome

AF:

0.000299

Gnomad4 AMR exome

AF:

0.000470

Gnomad4 ASJ exome

AF:

0.00260

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000580

Gnomad4 FIN exome

AF:

0.000150

Gnomad4 NFE exome

AF:

0.00129

Gnomad4 OTH exome

AF:

0.00118

GnomAD4 genome

AF:

0.000689

AC:

105

AN:

152330

Hom.:

Cov.:

AF XY:

0.000604

AC XY:

AN XY:

74494

show subpopulations

Gnomad4 AFR

AF:

0.000192

Gnomad4 AMR

AF:

0.000523

Gnomad4 ASJ

AF:

0.00288

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.000282

Gnomad4 NFE

AF:

0.00109

Gnomad4 OTH

AF:

0.000946

Alfa

AF:

0.00109

Hom.:

Bravo

AF:

0.000593

TwinsUK

AF:

0.00135

AC:

ALSPAC

AF:

0.00208

AC:

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.000581

AC:

ExAC

AF:

0.000535

AC:

EpiCase

AF:

0.000654

EpiControl

AF:

0.000711

ClinVar

Significance: Benign

Submissions summary: Uncertain:1Benign:12Other:1

Revision: reviewed by expert panel

LINK: link

Submissions by phenotype

not provided

Uncertain:1Benign:4

Likely benign, criteria provided, single submitter	clinical testing	GeneDx	May 06, 2021	This variant is associated with the following publications: (PMID: 28873162, 24728327) -
Likely benign, criteria provided, single submitter	not provided	Breakthrough Genomics, Breakthrough Genomics	-	- -
Likely benign, criteria provided, single submitter	clinical testing	CeGaT Center for Human Genetics Tuebingen	Dec 01, 2023	DICER1: BS1 -
Likely benign, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Apr 21, 2021	- -
Uncertain significance, no assertion criteria provided	clinical testing	Department of Pathology and Laboratory Medicine, Sinai Health System	-	- -

DICER1-related tumor predisposition

Benign:3

Benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Feb 01, 2024	- -
Benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 13, 2018	This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score and internal cut-off values, a variant classified as benign is not then subjected to further curation. The score for this variant resulted in a classification of benign for this disease. -
Benign, reviewed by expert panel	curation	ClinGen DICER1 and miRNA-Processing Gene Variant Curation Expert Panel, ClinGen	May 18, 2022	The NM_177438.2:c.59C>T is a missense variant in DICER1 predicted to cause substitution of Alanine by Valine at amino acid 20 (p.Ala20Val). The highest population minor allele frequency in gnomAD v2.1.1 is 0.0009673 in the non-Finnish European population, which is higher than the ClinGen DICER1 VCEP threshold (>0.0003) for BS1, and therefore meets this criterion (BS1). This variant has been observed in 40 or more unrelated females without tumors through age 50 in at least one testing laboratory (Internal lab contributors GTRs: 61756, 500031) and has been observed in a homozygous state in 3 healthy individuals (Internal lab contributors GTR: 500031)(BS2). The computational predictor REVEL gives a score of 0.302, which is below the threshold of 0.5, and the splice site predictors MaxEntScan and SpliceAI indicate that the variant has no impact on splicing, evidence that does not predict a damaging effect on DICER1 function (BP4). In summary, this variant meets the criteria to be classified as benign for DICER1 syndrome based on the ACMG/AMP criteria applied, as specified by the ClinGen DICER1 VCEP: BS1, BS2, BP4. (Bayesian Points: -9; VCEP specifications version 1; 02/11/2022). -

not specified

Benign:2Other:1

Benign, criteria provided, single submitter	clinical testing	Center for Genomic Medicine, Rigshospitalet, Copenhagen University Hospital	Jul 31, 2024	- -
not provided, no classification provided	reference population	ITMI	Sep 19, 2013	- -
Benign, criteria provided, single submitter	clinical testing	Quest Diagnostics Nichols Institute San Juan Capistrano	Jun 13, 2021	- -

Hereditary cancer-predisposing syndrome

Benign:2

Likely benign, criteria provided, single submitter	curation	Sema4, Sema4	Apr 27, 2021	- -
Likely benign, criteria provided, single submitter	clinical testing	Ambry Genetics	Mar 28, 2022	This alteration is classified as likely benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -

DICER1-related disorder

Benign:1

Benign, no assertion criteria provided

clinical testing

PreventionGenetics, part of Exact Sciences

Mar 14, 2024

This variant is classified as benign based on ACMG/AMP sequence variant interpretation guidelines (Richards et al. 2015 PMID: 25741868, with internal and published modifications). -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.28

BayesDel_addAF

Benign

-0.17

BayesDel_noAF

Uncertain

-0.020

CADD

Pathogenic

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.26

T;T;T;T;.;T;T

Eigen

Uncertain

0.68

Eigen_PC

Pathogenic

0.75

FATHMM_MKL

Pathogenic

0.99

LIST_S2

Uncertain

0.96

.;.;D;.;D;.;D

M_CAP

Benign

0.035

MetaRNN

Benign

0.033

T;T;T;T;T;T;T

MetaSVM

Benign

-0.42

MutationAssessor

Benign

0.55

N;N;N;N;N;.;.

PrimateAI

Pathogenic

0.81

PROVEAN

Benign

-0.56

N;N;N;N;N;N;N

REVEL

Uncertain

0.30

Sift

Uncertain

0.0060

D;D;D;D;D;D;D

Sift4G

Uncertain

0.035

D;D;D;D;D;.;.

Polyphen

1.0

D;D;D;D;.;.;.

Vest4

0.65

MVP

0.73

MPC

1.4

ClinPred

0.062

GERP RS

5.6

Varity_R

0.26

gMVP

0.75

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

LitVar

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over