Genetic Variant RAF1:c.-267G>A (chr3-12664053-C-T) – ACMG Classification: Benign (-11 pts)

Variant summary

Our verdict is Benign. The variant received -11 ACMG points: 0P and 11B. BP4BA1BP7BP5

This summary comes from the ClinGen Evidence Repository: The c.-267G>A variant was identified in the RAF1 gene. The filtering allele frequency for the c.-267G>A is 6.32% for African chromosomes in gnomAD (68/8706 with 95% CI) (https://gnomad.broadinstitute.org/), 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). The variant has also been identified in a patient with an alternate molecular basis for disease (BP5; Laboratory for Molecular Medicine internal data). In summary, the c.-267G>A variant meets criteria to be classified as benign. RASopathy-specific ACMG/AMP criteria applied (PMID:29493581): BA1, BP5. LINK:https://erepo.genome.network/evrepo/ui/classification/CA181005/MONDO:0021060/004

Frequency

Genomes: 𝑓 0.0020 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00036 ( 0 hom. )

Consequence

RAF1
NM_002880.4 5_prime_UTR

Scores

Clinical Significance

Benign reviewed by expert panel B:5

Conservation

PhyloP100: 0.505

Publications

0 publications found

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 Gene-Disease associations (from GenCC):

Noonan syndrome
Inheritance: AD Classification: DEFINITIVE, SUPPORTIVE Submitted by: Orphanet, ClinGen
Noonan syndrome 5
Inheritance: AD Classification: DEFINITIVE, STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae), Ambry Genetics, PanelApp Australia, G2P
dilated cardiomyopathy 1NN
Inheritance: AD Classification: STRONG, LIMITED Submitted by: Labcorp Genetics (formerly Invitae), Ambry Genetics
LEOPARD syndrome 2
Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp, Labcorp Genetics (formerly Invitae)
familial isolated dilated cardiomyopathy
Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
Noonan syndrome with multiple lentigines
Inheritance: AD Classification: SUPPORTIVE, LIMITED Submitted by: Orphanet, ClinGen
cardiofaciocutaneous syndrome
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
Costello syndrome
Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

RAF1 links:

ENSG00000290072 (HGNC:):

ENSG00000290072 links:

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ACMG classification

Classification was made for transcript

Our verdict: Benign. The variant received -11 ACMG points.

BP4

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

BP5

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

BP7

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

BA1

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

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_002880.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein
RAF1	NM_002880.4	MANE Select	c.-267G>A	5_prime_UTR	Exon 1 of 17	NP_002871.1
RAF1	NM_001354689.3		c.-267G>A	5_prime_UTR	Exon 1 of 18	NP_001341618.1
RAF1	NM_001354693.3		c.-267G>A	5_prime_UTR	Exon 1 of 16	NP_001341622.1

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	Effect	Exon Rank	Protein
RAF1	ENST00000251849.9	TSL:1 MANE Select	c.-267G>A	5_prime_UTR	Exon 1 of 17	ENSP00000251849.4
RAF1	ENST00000442415.7	TSL:5	c.-267G>A	5_prime_UTR	Exon 1 of 18	ENSP00000401888.2
RAF1	ENST00000941486.1		c.-360G>A	5_prime_UTR	Exon 1 of 19	ENSP00000611545.1

Frequencies

GnomAD3 genomes

AF:

0.00200

AC:

304

AN:

152176

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00685

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000589

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.000207

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000882

Gnomad OTH

AF:

0.00191

GnomAD4 exome

AF:

0.000357

AC:

AN:

246212

Hom.:

Cov.:

AF XY:

0.000345

AC XY:

AN XY:

124792

show subpopulations

African (AFR)

AF:

0.00655

AC:

AN:

7178

American (AMR)

AF:

0.000404

AC:

AN:

7432

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

9234

East Asian (EAS)

AF:

0.00

AC:

AN:

22886

South Asian (SAS)

AF:

0.00

AC:

AN:

3030

European-Finnish (FIN)

AF:

0.00

AC:

AN:

20824

Middle Eastern (MID)

AF:

0.00309

AC:

AN:

1294

European-Non Finnish (NFE)

AF:

0.000133

AC:

AN:

157972

Other (OTH)

AF:

0.000795

AC:

AN:

16362

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.490

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.00200

AC:

305

AN:

152294

Hom.:

Cov.:

AF XY:

0.00200

AC XY:

149

AN XY:

74474

show subpopulations

African (AFR)

AF:

0.00686

AC:

285

AN:

41568

American (AMR)

AF:

0.000588

AC:

AN:

15304

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5162

South Asian (SAS)

AF:

0.000207

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10622

Middle Eastern (MID)

AF:

0.00

AC:

AN:

292

European-Non Finnish (NFE)

AF:

0.0000882

AC:

AN:

68018

Other (OTH)

AF:

0.00189

AC:

AN:

2114

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.498

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Genome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.00214

Asia WGS

AF:

0.000866

AC:

AN:

3478

ClinVar

ClinVar submissions as Germline

Significance:Benign

Revision:reviewed by expert panel

View on ClinVar

Pathogenic

VUS

Benign

Condition

LEOPARD syndrome 2 (1)

Noonan syndrome 5 (1)

not provided (1)

not specified (1)

RASopathy (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

BayesDel_noAF

Benign

-0.77

CADD

Benign

8.6

(source)

DANN

Benign

0.79

PhyloP100

0.51

PromoterAI

0.26

Neutral

(source)

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.0

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

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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over