1-21220104-T-C

Position:

• chr1-21220104-T-C

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_001397.3(ECE1):​c.2164A>G​(p.Ser722Gly) variant causes a missense change. The variant allele was found at a frequency of 0.000000684 in 1,461,402 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 6.8e-7 (0 hom.)
• Consequence: ECE1 NM_001397.3 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 6.24

Genes affected

ECE1 (HGNC:3146): (endothelin converting enzyme 1) The protein encoded by this gene is involved in proteolytic processing of endothelin precursors to biologically active peptides. Mutations in this gene are associated with Hirschsprung disease, cardiac defects and autonomic dysfunction. Alternatively spliced transcript variants encoding different isoforms have been noted for this gene.[provided by RefSeq, Sep 2009]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.757

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
ECE1	NM_001397.3	c.2164A>G	p.Ser722Gly	missense_variant	19/19	ENST00000374893.11	NP_001388.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
ECE1	ENST00000374893.11	c.2164A>G	p.Ser722Gly	missense_variant	19/19	1	NM_001397.3	ENSP00000364028

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 6.84e-7 AC: 1 AN: 1461402 Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1 AN XY: 726896

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: 9.00e-7

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Oct 06, 2021

The c.2164A>G (p.S722G) alteration is located in exon 19 (coding exon 19) of the ECE1 gene. This alteration results from a A to G substitution at nucleotide position 2164, causing the serine (S) at amino acid position 722 to be replaced by a glycine (G). Based on insufficient or conflicting evidence, the clinical significance of this alteration remains unclear. -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.40
BayesDel_addAF	Pathogenic	0.24	D
BayesDel_noAF	Uncertain	0.11
CADD	Uncertain	25
DANN	Uncertain	1.0
DEOGEN2	Uncertain	0.61	.;.;.;D;T;.
Eigen	Uncertain	0.46
Eigen_PC	Uncertain	0.49
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.88	D;D;D;D;D;D
M_CAP	Uncertain	0.24	D
MetaRNN	Pathogenic	0.76	D;D;D;D;D;D
MetaSVM	Uncertain	0.70	D
MutationAssessor	Uncertain	2.4	.;.;.;M;.;.
MutationTaster	Benign	1.0	D;D;D;D;D
PrimateAI	Uncertain	0.57	T
PROVEAN	Uncertain	-2.4	N;.;N;N;N;N
REVEL	Pathogenic	0.76
Sift	Uncertain	0.0070	D;.;D;D;D;D
Sift4G	Benign	0.13	T;.;T;T;T;T
Polyphen		1.0, 0.54, 0.54	.;.;D;P;P;D
Vest4		0.50
MutPred		0.58		.;.;.;Loss of sheet (P = 0.1158);.;.;
MVP		0.90
MPC		1.5
ClinPred		0.96	D
GERP RS		5.2
Varity_R		0.72
gMVP		0.69

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Publications

No publications associated with this variant yet.

Other links and lift over

hg19: chr1-21546597;