rs780815020

Variant summary

Our verdict is Likely benign. Variant got -6 ACMG points: 1P and 7B. PP2BP4_ModerateBP6BS2

The NM_177438.3(DICER1):c.3422C>T(p.Ser1141Phe) variant causes a missense change. The variant allele was found at a frequency of 0.0000161 in 1,614,074 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 12/20 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. S1141A) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000033 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000014 ( 0 hom. )

Consequence

DICER1
NM_177438.3 missense

Scores

Clinical Significance

Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:6B:2

Conservation

PhyloP100: 6.24

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 -6 ACMG points.

PP2

Missense variant where missense usually causes diseases, DICER1

BP4

Computational evidence support a benign effect (MetaRNN=0.2085239).

BP6

Variant 14-95103974-G-A is Benign according to our data. Variant chr14-95103974-G-A is described in ClinVar as [Conflicting_classifications_of_pathogenicity]. Clinvar id is 412180.We mark this variant Likely_benign, oryginal submissions are: {Likely_benign=2, Uncertain_significance=6}.

BS2

High AC in GnomAd at 5 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
DICER1	NM_177438.3 linkuse as main transcript	c.3422C>T	p.Ser1141Phe	missense_variant	21/27	ENST00000343455.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
DICER1	ENST00000343455.8 linkuse as main transcript	c.3422C>T	p.Ser1141Phe	missense_variant	21/27	1	NM_177438.3	P1	Q9UPY3-1

Frequencies

GnomAD3 genomes

AF:

0.0000328

AC:

AN:

152208

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000482

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:

250884

Hom.:

AF XY:

0.0000147

AC XY:

AN XY:

135736

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.0000289

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:

0.0000265

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000144

AC:

AN:

1461866

Hom.:

Cov.:

AF XY:

0.0000110

AC XY:

AN XY:

727234

show subpopulations

Gnomad4 AFR exome

AF:

0.0000299

Gnomad4 AMR exome

AF:

0.0000224

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:

0.0000171

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000328

AC:

AN:

152208

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74358

show subpopulations

Gnomad4 AFR

AF:

0.0000482

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:

0.0000508

Hom.:

Bravo

AF:

0.0000378

ExAC

AF:

0.0000165

AC:

EpiCase

AF:

0.00

EpiControl

AF:

0.0000593

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:6Benign:2

Revision: criteria provided, conflicting classifications

LINK: link

Submissions by phenotype

not provided

Uncertain:2

Uncertain significance, criteria provided, single submitter	clinical testing	GeneDx	Apr 27, 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 Cushing disease (Martinez de LaPiscina et al., 2020); This variant is associated with the following publications: (PMID: 32714280) -
Uncertain significance, criteria provided, single submitter	clinical testing	Quest Diagnostics Nichols Institute San Juan Capistrano	Sep 21, 2023	In the published literature, this variant has been reported in an individual with Cushing’s disease (PMID: 32714280 (2020)). The frequency of this variant in the general population, 0.000023 (3/128840 chromosomes (Genome Aggregation Database, http://gnomad.broadinstitute.org)), is uninformative in the assessment of its pathogenicity. Analysis of this variant using bioinformatics tools for the prediction of the effect of amino acid changes on protein structure and function yielded predictions that this variant is benign. Based on the available information, we are unable to determine the clinical significance of this variant. -

Hereditary cancer-predisposing syndrome

Uncertain:2

Uncertain significance, criteria provided, single submitter	curation	Sema4, Sema4	May 10, 2021	- -
Uncertain significance, criteria provided, single submitter	clinical testing	Ambry Genetics	Feb 03, 2023	The p.S1141F variant (also known as c.3422C>T), located in coding exon 20 of the DICER1 gene, results from a C to T substitution at nucleotide position 3422. The serine at codon 1141 is replaced by phenylalanine, an amino acid with highly dissimilar properties. This variant has been identified in a cohort of patients with Cushing's disease (Martínez de LaPiscina I et al. Front Endocrinol (Lausanne) 2020 Jul;11:433). This amino acid position is not well conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. -

DICER1-related tumor predisposition

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Invitae	Jan 19, 2024	- -
Likely benign, criteria provided, single submitter	clinical testing	Illumina Laboratory Services, Illumina	Jan 12, 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 likely benign is not then subjected to further curation. The score for this variant resulted in a classification of likely benign for this disease. -

Global developmental delay - lung cysts - overgrowth - Wilms tumor syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Baylor Genetics

Oct 30, 2023

- -

Pleuropulmonary blastoma

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

St. Jude Molecular Pathology, St. Jude Children's Research Hospital

Sep 08, 2022

The DICER1 c.3422C>T (p.Ser1141Phe) missense change has a maximum subpopulation frequency of 0.0040% in gnomAD v2.1.1 (https://gnomad.broadinstitute.org/). The in silico tool REVEL predicts a benign effect on protein function and no splicing effects are predicted, but to our knowledge these predictions have not been confirmed by functional studies. This variant has been reported in an individual with a pituitary adenoma (corticotropinoma) and Cushing's disease (PMID: 32714280). In summary, the evidence currently available is insufficient to determine the clinical significance of this variant. It has therefore been classified as of uncertain significance. -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.080

BayesDel_addAF

Uncertain

0.026

BayesDel_noAF

Benign

-0.090

Cadd

Benign

Dann

Uncertain

1.0

DEOGEN2

Benign

0.28

T;T;T;T;.;.

Eigen

Benign

0.11

Eigen_PC

Uncertain

0.30

FATHMM_MKL

Pathogenic

0.98

M_CAP

Benign

0.027

MetaRNN

Benign

0.21

T;T;T;T;T;T

MetaSVM

Uncertain

-0.14

MutationAssessor

Benign

1.4

L;L;L;L;.;L

MutationTaster

Benign

0.92

D;D;D;D;D;D

PrimateAI

Benign

0.38

PROVEAN

Benign

-1.3

N;N;N;N;N;N

REVEL

Benign

0.13

Sift

Benign

0.035

D;D;D;D;T;D

Sift4G

Benign

0.091

T;T;T;T;T;T

Polyphen

0.053

B;B;B;B;.;.

Vest4

0.32

MVP

0.86

MPC

0.57

ClinPred

0.23

GERP RS

5.7

Varity_R

0.084

gMVP

0.52

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.050

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