chr17-63477161-C-G

Position:

• chr17-63477161-C-G

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 4P and 2B. PM1 PM2 BP4_Moderate

The NM_000789.4(ACE):​c.67C>G​(p.Pro23Ala) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00001 in 1,298,152 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 31)
  • Exomes 𝑓: 0.000010 (0 hom.)
• Consequence: ACE NM_000789.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 2.15

Genes affected

ACE (HGNC:2707): (angiotensin I converting enzyme) This gene encodes an enzyme involved in blood pressure regulation and electrolyte balance. It catalyzes the conversion of angiotensin I into a physiologically active peptide angiotensin II. Angiotensin II is a potent vasopressor and aldosterone-stimulating peptide that controls blood pressure and fluid-electrolyte balance. This angiotensin converting enzyme (ACE) also inactivates the vasodilator protein, bradykinin. Accordingly, the encoded enzyme increases blood pressure and is a drug target of ACE inhibitors, which are often prescribed to reduce blood pressure. This enzyme additionally plays a role in fertility through its ability to cleave and release GPI-anchored membrane proteins in spermatozoa. Many studies have associated the presence or absence of a 287 bp Alu repeat element in this gene with the levels of circulating enzyme. This polymorphism, as well as mutations in this gene, have been implicated in a wide variety of diseases including cardiovascular pathophysiologies, psoriasis, renal disease, stroke, and Alzheimer's disease. Regulation of the homologous ACE2 gene may be involved in progression of disease caused by several human coronaviruses, including SARS-CoV and SARS-CoV-2. Alternative splicing results in multiple transcript variants encoding both somatic (sACE) and male-specific testicular (tACE) isoforms. [provided by RefSeq, Sep 2020]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

• PM1: In a signal_peptide (size 28) in uniprot entity ACE_HUMAN there are 4 pathogenic changes around while only 0 benign (100%) in NM_000789.4
• PM2: Very rare variant in population databases, with high coverage
• BP4: Computational evidence support a benign effect (MetaRNN=0.08078283).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ACE	NM_000789.4	c.67C>G	p.Pro23Ala	missense_variant	1/25	ENST00000290866.10	NP_000780.1
ACE	NM_001382700.1	c.-169C>G		5_prime_UTR_variant	1/22		NP_001369629.1
ACE	NM_001382701.1	c.-548C>G		5_prime_UTR_variant	1/23		NP_001369630.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ACE	ENST00000290866.10	c.67C>G	p.Pro23Ala	missense_variant	1/25	1	NM_000789.4	ENSP00000290866	P1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome AF: 0.0000100 AC: 13 AN: 1298152 Hom.: 0 Cov.: 32 AF XY: 0.00000937 AC XY: 6 AN XY: 640030

Gnomad4 AFR exome AF: 0.00

Gnomad4 AMR exome AF: 0.00

Gnomad4 ASJ exome AF: 0.00

Gnomad4 EAS exome AF: 0.00

Gnomad4 SAS exome AF: 0.00

Gnomad4 FIN exome AF: 0.00

Gnomad4 NFE exome AF: 0.0000126

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 31

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Labcorp Genetics (formerly Invitae), Labcorp

Mar 31, 2022

In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. Algorithms developed to predict the effect of missense changes on protein structure and function are either unavailable or do not agree on the potential impact of this missense change (SIFT: "Deleterious"; PolyPhen-2: "Benign"; Align-GVGD: "Class C0"). This variant has not been reported in the literature in individuals affected with ACE-related conditions. This variant is not present in population databases (gnomAD no frequency). This sequence change replaces proline, which is neutral and non-polar, with alanine, which is neutral and non-polar, at codon 23 of the ACE protein (p.Pro23Ala). -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.067
BayesDel_addAF	Benign	-0.19	T
BayesDel_noAF	Benign	-0.52
CADD	Benign	9.1
DANN	Benign	0.65
DEOGEN2	Benign	0.013	T;T
Eigen	Benign	-0.87
Eigen_PC	Benign	-0.78
FATHMM_MKL	Benign	0.21	N
LIST_S2	Benign	0.31	T;T
M_CAP	Benign	0.047	D
MetaRNN	Benign	0.081	T;T
MetaSVM	Benign	-1.1	T
MutationAssessor	Benign	0.34	.;N
MutationTaster	Benign	1.0	N;N;N
PrimateAI	Pathogenic	0.81	D
PROVEAN	Benign	0.0	N;N
REVEL	Benign	0.081
Sift	Benign	1.0	T;T
Sift4G	Benign	0.59	T;T
Polyphen		0.0010	.;B
Vest4		0.21
MutPred		0.32		Loss of glycosylation at P23 (P = 0.0218);Loss of glycosylation at P23 (P = 0.0218);
MVP		0.49
MPC		0.088
ClinPred		0.12	T
GERP RS		4.2
Varity_R		0.072
gMVP		0.13

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

Publications

LitVar

Other links and lift over

dbSNP: rs1288779128; hg19: chr17-61554522;