rs369465519

Positions:

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 0P and 2B. BS3_SupportingBS2_Supporting

This summary comes from the ClinGen Evidence Repository: The NM_177438.2:c.4740G>T variant in DICER1 is a missense variant predicted to cause substitution of glutamine by histidine at amino acid 1580 (p.Gln1580His). This variant has been seen in 10 or more unrelated females without tumors through age 50 in at least one testing laboratory (BS2_Supporting; Internal lab contributors/GTRs: 500031, 61756). The highest population minor allele frequency in gnomAD (non-cancer) v2.1.1 is 0.00003 (3/102668 alleles) in the European (non-Finnish) population (PM2_Supporting, BS1, and BA1 are not met). In vitro cleavage assay in HEK293 cells showed that this variant produces both 5p and 3p microRNAs from a pre-miRNA, indicating that this variant is unlikely to impact protein function (BS3_Supporting; Wu 2018, McGill University). The computational predictor REVEL gives a score of 0.696, which is neither above nor below the thresholds predicting a damaging or benign impact on DICER1 function. In summary, this variant meets the criteria to be classified as Likely Benign for DICER1 syndrome based on the ACMG/AMP criteria applied, as specified by the ClinGen DICER1 VCEP: BS2_Supporting, BS3_Supporting. (Bayesian Points: -2; VCEP specifications version 1.1.0; 10/25/2022) LINK:https://erepo.genome.network/evrepo/ui/classification/CA7330808/MONDO:0017288/024

Frequency

Genomes: 𝑓 0.000020 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000049 ( 0 hom. )

Consequence

DICER1
NM_177438.3 missense

Scores

Clinical Significance

Likely benign reviewed by expert panel U:2B:3

Conservation

PhyloP100: 3.15

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:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

BS2

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

BS3

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.4740G>T	p.Gln1580His	missense_variant	23/27	ENST00000343455.8	NP_803187.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
DICER1	ENST00000343455.8 linkuse as main transcript	c.4740G>T	p.Gln1580His	missense_variant	23/27	1	NM_177438.3	ENSP00000343745	P1	Q9UPY3-1

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152220

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000441

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000159

AC:

AN:

251382

Hom.:

AF XY:

0.0000221

AC XY:

AN XY:

135862

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000352

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000486

AC:

AN:

1461884

Hom.:

Cov.:

AF XY:

0.0000509

AC XY:

AN XY:

727242

show subpopulations

Gnomad4 AFR exome

AF:

0.00

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000629

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.0000197

AC:

AN:

152220

Hom.:

Cov.:

AF XY:

0.0000134

AC XY:

AN XY:

74378

show subpopulations

Gnomad4 AFR

AF:

0.00

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000441

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000278

Hom.:

Bravo

AF:

0.0000378

TwinsUK

AF:

0.00

AC:

ALSPAC

AF:

0.000259

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000116

AC:

ExAC

AF:

0.0000330

AC:

EpiCase

AF:

0.000109

EpiControl

AF:

0.0000593

ClinVar

Significance: Likely benign

Submissions summary: Uncertain:2Benign:3

Revision: reviewed by expert panel

LINK: link

Submissions by phenotype

DICER1-related tumor predisposition

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Labcorp Genetics (formerly Invitae), Labcorp	Jan 15, 2024	- -
Likely benign, reviewed by expert panel	curation	ClinGen DICER1 and miRNA-Processing Gene Variant Curation Expert Panel, ClinGen	Oct 25, 2022	The NM_177438.2:c.4740G>T variant in DICER1 is a missense variant predicted to cause substitution of glutamine by histidine at amino acid 1580 (p.Gln1580His). This variant has been seen in 10 or more unrelated females without tumors through age 50 in at least one testing laboratory (BS2_Supporting; Internal lab contributors/GTRs: 500031, 61756). The highest population minor allele frequency in gnomAD (non-cancer) v2.1.1 is 0.00003 (3/102668 alleles) in the European (non-Finnish) population (PM2_Supporting, BS1, and BA1 are not met). In vitro cleavage assay in HEK293 cells showed that this variant produces both 5p and 3p microRNAs from a pre-miRNA, indicating that this variant is unlikely to impact protein function (BS3_Supporting; Wu 2018, McGill University). The computational predictor REVEL gives a score of 0.696, which is neither above nor below the thresholds predicting a damaging or benign impact on DICER1 function. In summary, this variant meets the criteria to be classified as Likely Benign for DICER1 syndrome based on the ACMG/AMP criteria applied, as specified by the ClinGen DICER1 VCEP: BS2_Supporting, BS3_Supporting. (Bayesian Points: -2; VCEP specifications version 1.1.0; 10/25/2022) -

not provided

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

GeneDx

May 23, 2022

Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant does not alter protein structure/function; Observed in an individual with a seminoma (Slade 2011); This variant is associated with the following publications: (PMID: 24136150, 21266384, 24708902, 23547758, 33158809, 29762508, 28748527) -

Hereditary cancer-predisposing syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Feb 14, 2023

The p.Q1580H variant (also known as c.4740G>T), located in coding exon 22 of the DICER1 gene, results from a G to T substitution at nucleotide position 4740. The glutamine at codon 1580 is replaced by histidine, an amino acid with highly similar properties. This alteration was reported in the germline of an individual with a seminoma diagnosed at age 32 (Slade I et al. J. Med. Genet., 2011 Apr;48:273-8). This amino acid position is highly conserved in available vertebrate species. In addition, this alteration is predicted to be deleterious by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

not specified

Benign:1

Likely benign, criteria provided, single submitter

curation

Foulkes Cancer Genetics LDI, Lady Davis Institute for Medical Research

Jul 01, 2019

ACMG criteria met: PP3, BS3, BP1 -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.97

BayesDel_addAF

Pathogenic

0.30

BayesDel_noAF

Pathogenic

0.33

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.49

T;T;T;T;.;.

Eigen

Uncertain

0.48

Eigen_PC

Uncertain

0.45

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.96

.;.;D;.;D;D

M_CAP

Uncertain

0.18

MetaRNN

Pathogenic

0.84

D;D;D;D;D;D

MetaSVM

Uncertain

0.21

MutationAssessor

Uncertain

2.4

M;M;M;M;.;M

MutationTaster

Benign

1.0

D;D;D;D;D;D

PrimateAI

Pathogenic

0.83

PROVEAN

Benign

-1.7

N;N;N;N;N;N

REVEL

Pathogenic

0.70

Sift

Uncertain

0.012

D;D;D;D;T;D

Sift4G

Uncertain

0.0070

D;D;D;D;D;D

Polyphen

1.0

D;D;D;D;.;.

Vest4

0.87

MutPred

0.42

Loss of catalytic residue at Q1580 (P = 0.0418);Loss of catalytic residue at Q1580 (P = 0.0418);Loss of catalytic residue at Q1580 (P = 0.0418);Loss of catalytic residue at Q1580 (P = 0.0418);.;Loss of catalytic residue at Q1580 (P = 0.0418);

MVP

0.97

MPC

1.4

ClinPred

0.73

GERP RS

3.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.45

gMVP

0.76

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