chr11-532698-T-C

Variant names:

• chr11-532698-T-C
• rs372936166
• NM_005343.4:c.508A>G

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2 BP4_Moderate

The NM_005343.4(HRAS):​c.508A>G​(p.Lys170Glu) variant causes a missense change. The variant allele was found at a frequency of 0.000000685 in 1,460,854 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign 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. K170R) has been classified as Uncertain significance.

• Frequency:
  • Genomes: not found (cov: 33)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: HRAS NM_005343.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 4.13
• 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: Uncertain_significance. The variant received 0 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.21677992).

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.508A>G	p.Lys170Glu	missense	Exon 5 of 6	NP_005334.1
	HRAS	NM_176795.5	MANE Plus Clinical	c.*77A>G		3_prime_UTR	Exon 6 of 6	NP_789765.1
	HRAS	NM_001130442.3		c.508A>G	p.Lys170Glu	missense	Exon 5 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.508A>G	p.Lys170Glu	missense	Exon 5 of 6	ENSP00000309845.7
	HRAS	ENST00000493230.5	TSL:1	n.*77A>G		non_coding_transcript_exon	Exon 6 of 7	ENSP00000434023.1
	HRAS	ENST00000417302.7	TSL:5 MANE Plus Clinical	c.*77A>G		3_prime_UTR	Exon 6 of 6	ENSP00000388246.1

Frequencies

GnomAD3 genomes Cov.: 33

GnomAD4 exome AF: 6.85e-7 AC: 1 AN: 1460854 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 726754

African (AFR) AF: 0.00 AC: 0 AN: 33476

American (AMR) AF: 0.00 AC: 0 AN: 44722

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26134

East Asian (EAS) AF: 0.00 AC: 0 AN: 39698

South Asian (SAS) AF: 0.00 AC: 0 AN: 86258

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 52474

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 8.99e-7 AC: 1 AN: 1111956

Other (OTH) AF: 0.00 AC: 0 AN: 60368

GnomAD4 genome Cov.: 33

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.35
BayesDel_addAF	Uncertain	0.12	D
BayesDel_noAF	Uncertain	-0.070
CADD	Benign	23
DANN	Uncertain	0.99
DEOGEN2	Benign	0.37	T
Eigen	Benign	-0.35
Eigen_PC	Benign	-0.17
FATHMM_MKL	Pathogenic	0.99	D
M_CAP	Benign	0.049	D
MetaRNN	Benign	0.22	T
MetaSVM	Benign	-0.98	T
MutationAssessor	Benign	0.36	N
PhyloP100		4.1
PrimateAI	Uncertain	0.66	T
PROVEAN	Benign	-1.3	N
REVEL	Uncertain	0.33
Sift	Benign	0.18	T
Sift4G	Benign	0.53	T
Polyphen		0.0010	B
Vest4		0.23
MutPred		0.38		Loss of methylation at K170 (P = 0.0121)
MVP		0.78
MPC		1.3
ClinPred		0.46	T
GERP RS		3.9
Varity_R		0.42
gMVP		0.57
Mutation Taster		=40/60	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: rs372936166; hg19: chr11-532698;