NM_002880.4:c.-298C>T

Variant names:

• chr3-12664084-G-A
• rs727504387
• NM_002880.4:c.-298C>T

Variant summary

Our verdict is Likely benign. The variant received -2 ACMG points: 2P and 4B. PM2 BP4_Moderate BP6_Moderate

The NM_002880.4(RAF1):​c.-298C>T variant causes a 5 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000406 in 246,146 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★).

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 0.0000041 (0 hom.)
• Consequence: RAF1 NM_002880.4 5_prime_UTR
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -0.0260
• Publications: 0 publications found

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

ENSG00000290072 (HGNC:):

ACMG classification

Our verdict: Likely_benign. The variant received -2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.37).
• BP6: Variant 3-12664084-G-A is Benign according to our data. Variant chr3-12664084-G-A is described in ClinVar as Likely_benign. ClinVar VariationId is 177894.Status of the report is criteria_provided_single_submitter, 1 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
RAF1	NM_002880.4	c.-298C>T		5_prime_UTR_variant	Exon 1 of 17	ENST00000251849.9	NP_002871.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
RAF1	ENST00000251849.9	c.-298C>T		5_prime_UTR_variant	Exon 1 of 17	1	NM_002880.4	ENSP00000251849.4

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 0.00000406 AC: 1 AN: 246146 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 124750

African (AFR) AF: 0.00 AC: 0 AN: 7178

American (AMR) AF: 0.00 AC: 0 AN: 7432

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 9228

East Asian (EAS) AF: 0.00 AC: 0 AN: 22886

South Asian (SAS) AF: 0.00 AC: 0 AN: 3034

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 20828

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 1294

European-Non Finnish (NFE) AF: 0.00000633 AC: 1 AN: 157908

Other (OTH) AF: 0.00 AC: 0 AN: 16358

GnomAD4 genome Cov.: 33

Alfa AF: 0.00 Hom.: 0

Bravo AF: 0.0000113

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Benign:1

Jul 14, 2010

Laboratory for Molecular Medicine, Mass General Brigham Personalized Medicine

Significance: Likely benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The -298C>T variant has not previously been reported in the literature but has b een identified by our laboratory in one other family. This variant was identifie d in the reportedly unaffected mother of the proband in this other family. In ad dition, the proband had a pathogenic PTPN11 variant. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.37
CADD	Benign	17
DANN	Uncertain	0.98
PhyloP100		-0.026
PromoterAI		-0.057	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.0

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs727504387; hg19: chr3-12705583;