chr14-20693755-A-T

Variant names:

• chr14-20693755-A-T
• rs121909540
• NM_001097577.3:c.191A>T

Variant summary

Our verdict is Likely pathogenic. The variant received 9 ACMG points: 9P and 0B. PM1 PM2 PP3_Strong PP5

The NM_001097577.3(ANG):​c.191A>T​(p.Lys64Ile) 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 Pathogenic (no stars).

• Frequency: Genomes: not found (cov: 32)
• Consequence: ANG NM_001097577.3 missense
• Clinical Significance: Pathogenic no assertion criteria provided P:1
• Conservation: PhyloP100: 4.78
• Publications: 7 publications found

Genes affected

ANG (HGNC:483): (angiogenin) The protein encoded by this gene is a member of the RNase A superfamily though it has relatively weak ribonucleolytic activity. This protein is a potent mediator of new blood vessel formation and thus, in addition to the name RNase5, is commonly called angiogenin. This protein induces angiogenesis after binding to actin on the surface of endothelial cells. This protein also accumulates at the nucleolus where it stimulates ribosomal transcription. Under stress conditions this protein translocates to the cytosol where it hydrolyzes cellular tRNAs and influences protein synthesis. A signal peptide is cleaved from the precursor protein to produce a mature protein which contains a nuclear localization signal, a cell binding motif, and a catalytic domain. This protein has been shown to be both neurotrophic and neuroprotective and the mature protein has antimicrobial activity against some bacteria and fungi, including S. pneumoniae and C. albicans. Due to its effect on rRNA production and angiogenesis this gene plays important roles in cell growth and tumor progression. Mutations in this gene are associated with progression of amyotrophic lateral sclerosis (ALS). This gene and the neighboring RNase4 gene share promoters and 5' exons though each gene then splices to a distinct 3' exon containing the complete coding region of each gene. Alternative splicing results in multiple transcript variants encoding the same protein. [provided by RefSeq, Jul 2020]

RNASE4 (HGNC:10047): (ribonuclease A family member 4) The protein encoded by this gene belongs to the pancreatic ribonuclease family. It plays an important role in mRNA cleavage and has marked specificity towards the 3' side of uridine nucleotides. Alternative splicing results in four transcript variants encoding the same protein. This gene and the gene that encodes angiogenin share promoters and 5' exons. Each gene splices to a unique downstream exon that contains its complete coding region. [provided by RefSeq, Aug 2013]

ENSG00000259171 (HGNC:):

EGILA (HGNC:54482): (EGFR interacting lncRNA)

ACMG classification

Our verdict: Likely_pathogenic. The variant received 9 ACMG points.

• PM1: In a mutagenesis_site Significantly decreases binding affinity for RNH1. (size 0) in uniprot entity ANGI_HUMAN
• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.975
• PP5: Variant 14-20693755-A-T is Pathogenic according to our data. Variant chr14-20693755-A-T is described in ClinVar as Pathogenic. ClinVar VariationId is 18078.Status of the report is no_assertion_criteria_provided, 0 stars.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ANG	NM_001097577.3	c.191A>T	p.Lys64Ile	missense_variant	Exon 2 of 2	ENST00000397990.5	NP_001091046.1
RNASE4	NM_002937.5	c.-17-5600A>T		intron_variant	Intron 1 of 1	ENST00000555835.3	NP_002928.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ANG	ENST00000397990.5	c.191A>T	p.Lys64Ile	missense_variant	Exon 2 of 2	1	NM_001097577.3	ENSP00000381077.4
RNASE4	ENST00000555835.3	c.-17-5600A>T		intron_variant	Intron 1 of 1	1	NM_002937.5	ENSP00000452245.1
ENSG00000259171	ENST00000553909.1	c.86+105A>T		intron_variant	Intron 2 of 2	2		ENSP00000477037.1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Pathogenic

Submissions summary: Pathogenic:1

Revision: no assertion criteria provided

Submissions by phenotype

Amyotrophic lateral sclerosis type 9 Pathogenic:1

Apr 01, 2006

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.92
BayesDel_addAF	Pathogenic	0.40	D
BayesDel_noAF	Pathogenic	0.34
CADD	Benign	23
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.51	D;D
Eigen	Pathogenic	0.74
Eigen_PC	Uncertain	0.58
FATHMM_MKL	Uncertain	0.90	D
LIST_S2	Benign	0.82	.;T
M_CAP	Uncertain	0.14	D
MetaRNN	Pathogenic	0.98	D;D
MetaSVM	Pathogenic	0.81	D
MutationAssessor	Pathogenic	4.1	H;H
PhyloP100		4.8
PrimateAI	Uncertain	0.52	T
PROVEAN	Pathogenic	-8.0	D;D
REVEL	Pathogenic	0.78
Sift	Uncertain	0.0010	D;D
Sift4G	Pathogenic	0.0	D;D
Polyphen		1.0	D;D
Vest4		0.92
MutPred		0.79		Loss of methylation at K64 (P = 2e-04);Loss of methylation at K64 (P = 2e-04);
MVP		0.93
MPC		0.98
ClinPred		1.0	D
GERP RS		5.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.98
gMVP		0.97
Mutation Taster		=24/76	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: rs121909540; hg19: chr14-21161914;