19-49636664-G-C

Variant names:

• chr19-49636664-G-C
• rs114187560
• NM_006270.5:c.408C>G

Variant summary

Our verdict is Likely benign. The variant received -5 ACMG points: 2P and 7B. PM2 BP4_Strong BP6_Moderate BP7

The NM_006270.5(RRAS):​c.408C>G​(p.Pro136Pro) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Likely benign (★). Synonymous variant affecting the same amino acid position (i.e. P136P) has been classified as Likely benign.

• Frequency: Genomes: not found (cov: 31)
• Consequence: RRAS NM_006270.5 synonymous
• Clinical Significance: Likely benign criteria provided, single submitter B:1
• Conservation: PhyloP100: 1.92
• Publications: 0 publications found

Genes affected

RRAS (HGNC:10447): (RAS related) The protein encoded by this gene is a small GTPase involved in diverse processes including angiogenesis, vascular homeostasis and regeneration, cell adhesion, and neuronal axon guidance. Mutations in this gene are found in many invasive cancers. [provided by RefSeq, Jul 2015]

RRAS Gene-Disease associations (from GenCC):

• Noonan syndrome and Noonan-related syndrome

  Inheritance: AD Classification: STRONG Submitted by: G2P
• Noonan syndrome

  Inheritance: AD Classification: MODERATE, LIMITED Submitted by: Genomics England PanelApp, PanelApp Australia, ClinGen
• cardiofaciocutaneous syndrome

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
• Costello syndrome

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
• Noonan syndrome with multiple lentigines

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen
• Noonan syndrome-like disorder with loose anagen hair

  Inheritance: AD Classification: NO_KNOWN Submitted by: ClinGen

ACMG classification

Our verdict: Likely_benign. The variant received -5 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.6).
• BP6: Variant 19-49636664-G-C is Benign according to our data. Variant chr19-49636664-G-C is described in ClinVar as Likely_benign. ClinVar VariationId is 1130294.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=1.92 with no splicing effect.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_006270.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RRAS	NM_006270.5	MANE Select	c.408C>G	p.Pro136Pro	synonymous	Exon 4 of 6	NP_006261.1	P10301

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	RRAS	ENST00000246792.4	TSL:1 MANE Select	c.408C>G	p.Pro136Pro	synonymous	Exon 4 of 6	ENSP00000246792.2	P10301
	RRAS	ENST00000962270.1		c.447C>G	p.Pro149Pro	synonymous	Exon 5 of 7	ENSP00000632329.1
	RRAS	ENST00000928399.1		c.417C>G	p.Pro139Pro	synonymous	Exon 4 of 6	ENSP00000598458.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 31

ClinVar

ClinVar submissions

Significance: Likely benign

Revision: criteria provided, single submitter

Pathogenic	VUS	Benign	Condition
-	-	1	Noonan syndrome (1)

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.60
CADD	Benign	1.1
DANN	Benign	0.33
PhyloP100		1.9

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

Other links and lift over

dbSNP: rs114187560; hg19: chr19-50139921;