rs727504451

Variant summary

Our verdict is Benign. Variant got -16 ACMG points: 0P and 16B. BP6_Very_StrongBS1BS2

The NM_002880.4(RAF1):c.1108+9_1108+21del variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00065 in 1,592,256 control chromosomes in the GnomAD database, including 2 homozygotes. Variant has been reported in ClinVar as Benign (★★★).

Frequency

Genomes: 𝑓 0.00039 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00068 ( 2 hom. )

Consequence

RAF1
NM_002880.4 intron

Scores

Not classified

Clinical Significance

Benign reviewed by expert panel U:1B:7

Conservation

PhyloP100: 1.84

Variant links:

Genes affected

RAF1 (HGNC:9829): (Raf-1 proto-oncogene, serine/threonine kinase) This gene is the cellular homolog of viral raf gene (v-raf). The encoded protein is a MAP kinase kinase kinase (MAP3K), which functions downstream of the Ras family of membrane associated GTPases to which it binds directly. Once activated, the cellular RAF1 protein can phosphorylate to activate the dual specificity protein kinases MEK1 and MEK2, which in turn phosphorylate to activate the serine/threonine specific protein kinases, ERK1 and ERK2. Activated ERKs are pleiotropic effectors of cell physiology and play an important role in the control of gene expression involved in the cell division cycle, apoptosis, cell differentiation and cell migration. Mutations in this gene are associated with Noonan syndrome 5 and LEOPARD syndrome 2. [provided by RefSeq, Jul 2008]

RAF1 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -16 ACMG points.

BP6

Variant 3-12599669-AAAGGGAGGGCCCC-A is Benign according to our data. Variant chr3-12599669-AAAGGGAGGGCCCC-A is described in ClinVar as [Benign]. Clinvar id is 178666.Status of the report is reviewed_by_expert_panel, 3 stars. Variant chr3-12599669-AAAGGGAGGGCCCC-A is described in Lovd as [Likely_benign].

BS1

Variant frequency is greater than expected in population nfe. gnomad4 allele frequency = 0.000394 (60/152148) while in subpopulation NFE AF= 0.00072 (49/68026). AF 95% confidence interval is 0.00056. There are 0 homozygotes in gnomad4. There are 26 alleles in male gnomad4 subpopulation. Median coverage is 32. This position pass quality control queck.

BS2

High AC in GnomAd at 60 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
RAF1	NM_002880.4 linkuse as main transcript	c.1108+9_1108+21del		intron_variant		ENST00000251849.9

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
RAF1	ENST00000251849.9 linkuse as main transcript	c.1108+9_1108+21del		intron_variant		1	NM_002880.4	P3	P04049-1

Frequencies

GnomAD3 genomes

AF:

0.000394

AC:

AN:

152148

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000262

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:

0.000720

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000358

AC:

AN:

251410

Hom.:

AF XY:

0.000346

AC XY:

AN XY:

135888

show subpopulations

Gnomad AFR exome

AF:

0.000185

Gnomad AMR exome

AF:

0.0000868

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:

0.000721

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.000677

AC:

975

AN:

1440108

Hom.:

AF XY:

0.000623

AC XY:

447

AN XY:

717922

show subpopulations

Gnomad4 AFR exome

AF:

0.0000908

Gnomad4 AMR exome

AF:

0.0000671

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.0000562

Gnomad4 NFE exome

AF:

0.000856

Gnomad4 OTH exome

AF:

0.000520

GnomAD4 genome

AF:

0.000394

AC:

AN:

152148

Hom.:

Cov.:

AF XY:

0.000350

AC XY:

AN XY:

74338

show subpopulations

Gnomad4 AFR

AF:

0.000169

Gnomad4 AMR

AF:

0.000262

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000720

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000391

Hom.:

Bravo

AF:

0.000329

ClinVar

Significance: Benign

Submissions summary: Uncertain:1Benign:7

Revision: reviewed by expert panel

LINK: link

Submissions by phenotype

RASopathy

Benign:3

Benign, reviewed by expert panel	curation	ClinGen RASopathy Variant Curation Expert Panel	Apr 03, 2017	The c.1108+9_1108+21del variant in the RAF1 gene has been identified in a patient with an alternate molecular basis for disease (BP5; GeneDx, Partners LMM internal data; GTR Lab ID's: 26957, 21766; ClinVar SCV000205113.4, SCV000209007.2). This variant is a synonymous (silent) variant at a nucleotide that is not highly conserved and is not predicted to impact splicing (BP7). The filtering allele frequency of the c.1108+9_1108+21del variant in the RAF1 gene is 0.0637% (54/66698) for European (Non-Finnish) chromosomes by the Exome Aggregation Consortium, which is a high enough frequency to be classified as benign based on thresholds defined by the ClinGen RASopathy Expert Panel for autosomal dominant RASopathy variants (BA1). In summary, this variant meets criteria to be classified as benign. RASopathy-specific ACMG/AMP criteria applied (PMID:29493581): BA1, BP5, BP7. -
Benign, criteria provided, single submitter	clinical testing	GeneDx	Aug 07, 2014	The variant is found in NOONAN panel(s). -
Likely benign, criteria provided, single submitter	clinical testing	Invitae	Jan 23, 2024	- -

not specified

Benign:2

Likely benign, criteria provided, single submitter	clinical testing	Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine	Mar 31, 2015	c.1108+9_1108+21del in intron 10 of RAF1: This variant is not expected to have c linical significance because it does not alter an amino acid residue, is not loc ated within the splice consensus sequence, and splice prediction models do not s uggest an impact to splicing. -
Benign, criteria provided, single submitter	clinical testing	Women's Health and Genetics/Laboratory Corporation of America, LabCorp	Aug 05, 2021	Variant summary: RAF1 c.1108+9_1108+21del13 alters a nucleotide located close to a canonical splice site and therefore could affect mRNA splicing, leading to a significantly altered protein sequence. 4/4 computational tools predict no significant impact on normal splicing. However, these predictions have yet to be confirmed by functional studies. The variant allele was found at a frequency of 0.00036 in 251410 control chromosomes, predominantly at a frequency of 0.00072 within the Non-Finnish European subpopulation in the gnomAD database. The observed variant frequency within Non-Finnish European control individuals in the gnomAD database is approximately 28.8 fold of the estimated maximal expected allele frequency for a pathogenic variant in RAF1 causing Noonan Syndrome And Related Conditions phenotype (2.5e-05), strongly suggesting that the variant is a benign polymorphism found primarily in populations of Non-Finnish European origin. Four clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation. All laboratories classified the variant as benign/likely benign, including a benign classification by ClinGen RASopathy Variant Curation Expert Panel. Based on the evidence outlined above, the variant was classified as benign. -

Noonan syndrome and Noonan-related syndrome

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Genome Diagnostics Laboratory, The Hospital for Sick Children

May 01, 2018

- -

Noonan syndrome

Benign:1

Benign, criteria provided, single submitter

clinical testing

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

Sep 22, 2020

The c.1168+9_1168+21del splice region variant has a frequency of 0.0003465 (98 of 282,788 alleles) in gnomAD v2.1.1 with a maximum allele frequency of 0.0006814 (88 of 129,138) in the European non-Finnish population (http://gnomad.broadinstitute.org). This is a high enough frequency to be classified as benign based on thresholds defined by the ClinGen RASopathy Expert Panel for autosomal dominant RASopathy variants (BA1). This variant is not predicted to impact splicing (BP7). This variant has been classified as benign by the ClinGen RASopathy Variant Curation Expert Panel with additional unpublished patient data (SCV000616427.3). In summary, this variant meets criteria to be classified as benign based on the ACMG/AMP criteria, as specified by the ClinGen RASopathy Variant Curation Expert Panel (PMID:29493581): BA1, BP7. -

RAF1-related disorder

Benign:1

Benign, criteria provided, single submitter

clinical testing

PreventionGenetics, part of Exact Sciences

Jul 08, 2019

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

Splicing

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