11-534289-C-G

Variant names:

• chr11-534289-C-G
• rs104894229
• NM_005343.4:c.34G>C

Variant summary

Our verdict is Pathogenic. The variant received 10 ACMG points: 10P and 0B. PM1 PM2 PM5 PP3_Moderate PP5_Moderate

The NM_005343.4(HRAS):​c.34G>C​(p.Gly12Arg) variant causes a missense change. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Likely pathogenic (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G12S) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 34)
• Consequence: HRAS NM_005343.4 missense
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:1
• Conservation: PhyloP100: 6.09
• Publications: 181 publications found

Genes affected

HRAS (HGNC:5173): (HRas proto-oncogene, GTPase) This gene belongs to the Ras oncogene family, whose members are related to the transforming genes of mammalian sarcoma retroviruses. The products encoded by these genes function in signal transduction pathways. These proteins can bind GTP and GDP, and they have intrinsic GTPase activity. This protein undergoes a continuous cycle of de- and re-palmitoylation, which regulates its rapid exchange between the plasma membrane and the Golgi apparatus. Mutations in this gene cause Costello syndrome, a disease characterized by increased growth at the prenatal stage, growth deficiency at the postnatal stage, predisposition to tumor formation, cognitive disability, skin and musculoskeletal abnormalities, distinctive facial appearance and cardiovascular abnormalities. Defects in this gene are implicated in a variety of cancers, including bladder cancer, follicular thyroid cancer, and oral squamous cell carcinoma. Multiple transcript variants, which encode different isoforms, have been identified for this gene. [provided by RefSeq, Jul 2008]

LRRC56 (HGNC:25430): (leucine rich repeat containing 56) Predicted to be involved in cell projection organization. Predicted to be located in cilium. Implicated in primary ciliary dyskinesia 39. [provided by Alliance of Genome Resources, Apr 2022]

LRRC56 Gene-Disease associations (from GenCC):

• ciliary dyskinesia, primary, 39

  Inheritance: AR Classification: STRONG, MODERATE, LIMITED Submitted by: PanelApp Australia, Ambry Genetics, Labcorp Genetics (formerly Invitae)
• primary ciliary dyskinesia

  Inheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet

ACMG classification

Our verdict: Pathogenic. The variant received 10 ACMG points.

• PM1: In a hotspot region, there are 5 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 13 uncertain in NM_005343.4
• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr11-534289-C-T is described in ClinVar as Pathogenic. ClinVar VariationId is 12602.Status of the report is reviewed_by_expert_panel, 3 stars.
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.899
• PP5: Variant 11-534289-C-G is Pathogenic according to our data. Variant chr11-534289-C-G is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 375961.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_005343.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	HRAS	NM_005343.4	MANE Select	c.34G>C	p.Gly12Arg	missense	Exon 2 of 6	NP_005334.1
	HRAS	NM_176795.5	MANE Plus Clinical	c.34G>C	p.Gly12Arg	missense	Exon 2 of 6	NP_789765.1
	HRAS	NM_001130442.3		c.34G>C	p.Gly12Arg	missense	Exon 2 of 5	NP_001123914.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	HRAS	ENST00000311189.8	TSL:1 MANE Select	c.34G>C	p.Gly12Arg	missense	Exon 2 of 6	ENSP00000309845.7
	HRAS	ENST00000417302.7	TSL:5 MANE Plus Clinical	c.34G>C	p.Gly12Arg	missense	Exon 2 of 6	ENSP00000388246.1
	HRAS	ENST00000493230.5	TSL:1	n.34G>C		non_coding_transcript_exon	Exon 2 of 7	ENSP00000434023.1

Frequencies

GnomAD3 genomes Cov.: 34

GnomAD4 exome Cov.: 33

GnomAD4 genome Cov.: 34

ClinVar

ClinVar submissions as Germline

Significance: Likely pathogenic

Revision: criteria provided, single submitter

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

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.33	D
BayesDel_noAF	Pathogenic	0.24
CADD	Uncertain	23
DANN	Uncertain	1.0
DEOGEN2	Pathogenic	0.86	D
Eigen	Uncertain	0.29
Eigen_PC	Benign	0.17
FATHMM_MKL	Pathogenic	0.99	D
M_CAP	Pathogenic	0.29	D
MetaRNN	Pathogenic	0.90	D
MetaSVM	Uncertain	0.11	D
MutationAssessor	Uncertain	2.8	M
PhyloP100		6.1
PrimateAI	Pathogenic	0.90	D
PROVEAN	Pathogenic	-6.2	D
REVEL	Pathogenic	0.76
Sift	Uncertain	0.019	D
Sift4G	Uncertain	0.0040	D
Polyphen		0.85	P
Vest4		0.52
MutPred		0.83		Gain of MoRF binding (P = 0.0105)
MVP		0.95
MPC		2.0
ClinPred		1.0	D
GERP RS		3.0
Varity_R		0.90
gMVP		0.98
Mutation Taster		=0/100	disease causing (ClinVar)

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: rs104894229; hg19: chr11-534289; COSMIC: COSV54236795; COSMIC: COSV54236795;