11-533903-G-C

Variant names:

• chr11-533903-G-C
• rs759482455
• NM_005343.4:c.153C>G

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM1 PM2 PP3_Moderate

The NM_005343.4(HRAS):​c.153C>G​(p.Cys51Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. C51R) has been classified as Uncertain significance.

• Frequency: Genomes: not found (cov: 33)
• Consequence: HRAS NM_005343.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 0.298
• Publications: 0 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: Likely_pathogenic. The variant received 6 ACMG points.

• PM1: In a hotspot region, there are 7 aminoacids with missense pathogenic changes in the window of +-8 aminoacids around while only 0 benign, 15 uncertain in NM_005343.4
• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.939

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.153C>G	p.Cys51Trp	missense	Exon 3 of 6	NP_005334.1
	HRAS	NM_176795.5	MANE Plus Clinical	c.153C>G	p.Cys51Trp	missense	Exon 3 of 6	NP_789765.1
	HRAS	NM_001130442.3		c.153C>G	p.Cys51Trp	missense	Exon 3 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.153C>G	p.Cys51Trp	missense	Exon 3 of 6	ENSP00000309845.7
	HRAS	ENST00000417302.7	TSL:5 MANE Plus Clinical	c.153C>G	p.Cys51Trp	missense	Exon 3 of 6	ENSP00000388246.1
	HRAS	ENST00000493230.5	TSL:1	n.153C>G		non_coding_transcript_exon	Exon 3 of 7	ENSP00000434023.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome Cov.: 34

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	1.0
BayesDel_addAF	Pathogenic	0.30	D
BayesDel_noAF	Pathogenic	0.19
CADD	Benign	19
DANN	Uncertain	0.98
DEOGEN2	Pathogenic	0.88	D
Eigen	Benign	-0.20
Eigen_PC	Benign	-0.43
FATHMM_MKL	Uncertain	0.81	D
M_CAP	Pathogenic	0.77	D
MetaRNN	Pathogenic	0.94	D
MetaSVM	Uncertain	-0.055	T
MutationAssessor	Benign	1.6	L
PhyloP100		0.30
PrimateAI	Pathogenic	0.94	D
PROVEAN	Pathogenic	-9.2	D
REVEL	Uncertain	0.60
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0010	D
Polyphen		1.0	D
Vest4		0.90
MutPred		0.63		Loss of catalytic residue at L52 (P = 0.0777)
MVP		0.90
MPC		2.5
ClinPred		1.0	D
GERP RS		-2.4
PromoterAI		0.024	Neutral
Varity_R		0.99
gMVP		0.97
Mutation Taster		=8/92	disease causing

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: rs759482455; hg19: chr11-533903;