rs61877782

Variant names:

• chr11-534415-C-G
• rs61877782
• NM_005343.4:c.-53-40G>C

Variant summary

Our verdict is Likely benign. The variant received -4 ACMG points: 0P and 4B. BP4_Strong

The NM_005343.4(HRAS):​c.-53-40G>C variant causes a intron change involving the alteration of a non-conserved nucleotide. There is a variant allele frequency bias in the population database for this variant (GnomAdExome4), which may indicate mosaicism or somatic mutations in the reference population data. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency:
  • Genomes: 𝑓 0.000015 (0 hom., cov: 0)
  • Exomes 𝑓: 0.00013 (0 hom.)
• Consequence: HRAS NM_005343.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.978
• Publications: 3 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_benign. The variant received -4 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.57).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
HRAS	NM_005343.4	c.-53-40G>C		intron_variant	Intron 1 of 5	ENST00000311189.8	NP_005334.1
HRAS	NM_176795.5	c.-53-40G>C		intron_variant	Intron 1 of 5	ENST00000417302.7	NP_789765.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
HRAS	ENST00000311189.8	c.-53-40G>C		intron_variant	Intron 1 of 5	1	NM_005343.4	ENSP00000309845.7
HRAS	ENST00000417302.7	c.-53-40G>C		intron_variant	Intron 1 of 5	5	NM_176795.5	ENSP00000388246.1

Frequencies

GnomAD3 genomes AF: 0.0000150 AC: 1 AN: 66646 Hom.: 0 Cov.: 0

Gnomad AFR AF: 0.00

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.00

Gnomad SAS AF: 0.00

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000342

Gnomad OTH AF: 0.00

GnomAD4 exome AF: 0.000127 AC: 52 AN: 410058 Hom.: 0 Cov.: 0 AF XY: 0.000117 AC XY: 25 AN XY: 213882

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 8616

American (AMR) AF: 0.0000741 AC: 1 AN: 13500

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 11324

East Asian (EAS) AF: 0.00 AC: 0 AN: 23362

South Asian (SAS) AF: 0.0000504 AC: 2 AN: 39702

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 18026

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 1964

European-Non Finnish (NFE) AF: 0.000175 AC: 48 AN: 273728

Other (OTH) AF: 0.0000504 AC: 1 AN: 19836

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

GnomAD4 genome AF: 0.0000150 AC: 1 AN: 66646 Hom.: 0 Cov.: 0 AF XY: 0.00 AC XY: 0 AN XY: 33072

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR) AF: 0.00 AC: 0 AN: 16000

American (AMR) AF: 0.00 AC: 0 AN: 6030

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 1908

East Asian (EAS) AF: 0.00 AC: 0 AN: 3436

South Asian (SAS) AF: 0.00 AC: 0 AN: 2734

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 5876

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 170

European-Non Finnish (NFE) AF: 0.0000342 AC: 1 AN: 29198

Other (OTH) AF: 0.00 AC: 0 AN: 928

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0), which strongly suggests a high chance of mosaicism in these individuals.

Alfa AF: 0.000590 Hom.: 0

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.57
CADD	Benign	11
DANN	Benign	0.75
PhyloP100		-0.98
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1

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: rs61877782; hg19: chr11-534415;