14-95096508-G-A

Position:

chr14-95096508-G-A

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 0P and 2B. BP4BS2_Supporting

This summary comes from the ClinGen Evidence Repository: The NM_177438.2:c.4412C>T variant in DICER1 is a missense variant predicted to cause substitution of Proline by Leucine at amino acid 1471 (p.Pro1471Leu). 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). The highest population minor allele frequency in gnomAD v3.1.2 is 0.00001543 (1/64,794 alleles) in the European (non-Finnish) population (PM2_Supporting, BS1, and BA1 are not met). In silico tools predict no damaging impact of the variant on protein function (REVEL: 0.04 MaxEntScan and SpliceAI: no effect on splicing) (BP4). 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: BP4, BS2_Supporting. (Bayesian Points: -2; VCEP specifications version 1.2.0; 01/09/2024) LINK:https://erepo.genome.network/evrepo/ui/classification/CA16614180/MONDO:0100216/024

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000016 ( 0 hom. )

Consequence

DICER1
NM_177438.3 missense

Scores

Clinical Significance

Likely benign reviewed by expert panel U:5B:1

Conservation

PhyloP100: 4.21

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:

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ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

BP4

BS2

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
DICER1	NM_177438.3 linkuse as main transcript	c.4412C>T	p.Pro1471Leu	missense_variant	23/27	ENST00000343455.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
DICER1	ENST00000343455.8 linkuse as main transcript	c.4412C>T	p.Pro1471Leu	missense_variant	23/27	1	NM_177438.3	P1	Q9UPY3-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152150

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:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.00000398

AC:

AN:

251324

Hom.:

AF XY:

0.00

AC XY:

AN XY:

135850

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:

0.00000880

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000164

AC:

AN:

1461764

Hom.:

Cov.:

AF XY:

0.0000151

AC XY:

AN XY:

727190

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:

0.0000216

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152150

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74330

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:

0.0000147

Gnomad4 OTH

AF:

0.00

Bravo

AF:

0.00000756

ClinVar

Significance: Likely benign

Submissions summary: Uncertain:5Benign:1

Revision: reviewed by expert panel

LINK: link

Submissions by phenotype

not provided

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Nov 16, 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; Has not been previously published as pathogenic or benign to our knowledge -
Uncertain significance, criteria provided, single submitter	clinical testing	ARUP Laboratories, Molecular Genetics and Genomics, ARUP Laboratories	Apr 06, 2022	The DICER1 c.4412C>T; p.Pro1471Leu variant (rs1060503657), to our knowledge, is not reported in the medical literature but is reported in ClinVar (Variation ID: 412179). This variant is only observed on one allele in the Genome Aggregation Database, indicating it is not a common polymorphism. The proline at codon 1471 is moderately conserved, and computational analyses predict that this variant is neutral (REVEL: 0.04). However, given the lack of clinical and functional data, the significance of the p.Pro1471Leu variant is uncertain at this time. -

Hereditary cancer-predisposing syndrome

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	Ambry Genetics	Apr 06, 2023	The p.P1471L variant (also known as c.4412C>T), located in coding exon 22 of the DICER1 gene, results from a C to T substitution at nucleotide position 4412. The proline at codon 1471 is replaced by leucine, an amino acid with similar properties. This amino acid position is not well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -
Uncertain significance, criteria provided, single submitter	curation	Sema4, Sema4	Mar 13, 2022	- -

DICER1-related tumor predisposition

Uncertain:1Benign:1

Uncertain significance, criteria provided, single submitter	clinical testing	Invitae	Jan 18, 2024	This sequence change replaces proline, which is neutral and non-polar, with leucine, which is neutral and non-polar, at codon 1471 of the DICER1 protein (p.Pro1471Leu). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with DICER1-related conditions. ClinVar contains an entry for this variant (Variation ID: 412179). An algorithm developed to predict the effect of missense changes on protein structure and function (PolyPhen-2) suggests that this variant¬†is likely to be tolerated. 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. -
Likely benign, reviewed by expert panel	curation	ClinGen DICER1 and miRNA-Processing Gene Variant Curation Expert Panel, ClinGen	Jan 09, 2024	The NM_177438.2:c.4412C>T variant in DICER1 is a missense variant predicted to cause substitution of Proline by Leucine at amino acid 1471 (p.Pro1471Leu). 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). The highest population minor allele frequency in gnomAD v3.1.2 is 0.00001543 (1/64,794 alleles) in the European (non-Finnish) population (PM2_Supporting, BS1, and BA1 are not met). In silico tools predict no damaging impact of the variant on protein function (REVEL: 0.04 MaxEntScan and SpliceAI: no effect on splicing) (BP4). 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: BP4, BS2_Supporting. (Bayesian Points: -2; VCEP specifications version 1.2.0; 01/09/2024) -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.13

BayesDel_addAF

Benign

-0.0041

BayesDel_noAF

Benign

-0.24

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.31

T;T;T;T;.;.

Eigen

Benign

-0.37

Eigen_PC

Benign

-0.22

FATHMM_MKL

Uncertain

0.86

LIST_S2

Uncertain

0.96

.;.;D;.;D;D

M_CAP

Benign

0.057

MetaRNN

Benign

0.14

T;T;T;T;T;T

MetaSVM

Benign

-0.46

MutationAssessor

Benign

0.90

L;L;L;L;.;L

MutationTaster

Benign

0.99

D;D;D;D;D;D

PrimateAI

Uncertain

0.51

PROVEAN

Benign

-1.1

N;N;N;N;N;N

REVEL

Benign

0.040

Sift

Uncertain

0.016

D;D;D;D;T;D

Sift4G

Benign

0.21

T;T;T;T;T;T

Polyphen

0.0

B;B;B;B;.;.

Vest4

0.23

MutPred

0.45

Loss of loop (P = 0.0203);Loss of loop (P = 0.0203);Loss of loop (P = 0.0203);Loss of loop (P = 0.0203);.;Loss of loop (P = 0.0203);

MVP

0.79

MPC

0.62

ClinPred

0.49

GERP RS

4.7

Varity_R

0.12

gMVP

0.42

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