chr1-21220008-G-C

Variant names:

• chr1-21220008-G-C
• rs3026906
• NM_001397.3:c.2260C>G

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 4P and 2B. PM2 PM5 BP4_Moderate

The NM_001397.3(ECE1):​c.2260C>G​(p.Arg754Gly) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. 15/22 in silico tools predict 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. R754C) has been classified as Pathogenic.

• Frequency: Genomes: not found (cov: 32)
• Consequence: ECE1 NM_001397.3 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 1.04
• Publications: 0 publications found

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]

ECE1 Gene-Disease associations (from GenCC):

• essential hypertension, genetic

  Inheritance: Unknown Classification: NO_KNOWN Submitted by: Labcorp Genetics (formerly Invitae)

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PM5: Other missense variant is known to change same aminoacid residue: Variant chr1-21220008-G-A is described in ClinVar as Pathogenic. ClinVar VariationId is 9133.Status of the report is no_assertion_criteria_provided, 0 stars.
• BP4: Computational evidence support a benign effect (MetaRNN=0.11445668).

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_001397.3. 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
	ECE1	NM_001397.3	MANE Select	c.2260C>G	p.Arg754Gly	missense	Exon 19 of 19	NP_001388.1
	ECE1	NM_001113349.2		c.2251C>G	p.Arg751Gly	missense	Exon 18 of 18	NP_001106820.1
	ECE1	NM_001113347.2		c.2224C>G	p.Arg742Gly	missense	Exon 17 of 17	NP_001106818.1

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ECE1	ENST00000374893.11	TSL:1 MANE Select	c.2260C>G	p.Arg754Gly	missense	Exon 19 of 19	ENSP00000364028.6
	ECE1	ENST00000264205.10	TSL:1	c.2251C>G	p.Arg751Gly	missense	Exon 18 of 18	ENSP00000264205.6
	ECE1	ENST00000357071.8	TSL:1	c.2224C>G	p.Arg742Gly	missense	Exon 17 of 17	ENSP00000349581.4

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Benign	0.062
BayesDel_addAF	Benign	-0.11	T
BayesDel_noAF	Benign	-0.40
CADD	Benign	18
DANN	Benign	0.29
DEOGEN2	Benign	0.28	T
Eigen	Benign	-0.82
Eigen_PC	Benign	-0.58
FATHMM_MKL	Benign	0.67	D
LIST_S2	Benign	0.85	D
M_CAP	Benign	0.029	D
MetaRNN	Benign	0.11	T
MetaSVM	Benign	-1.0	T
MutationAssessor	Benign	-1.6	N
PhyloP100		1.0
PrimateAI	Benign	0.22	T
PROVEAN	Benign	-0.29	N
REVEL	Uncertain	0.29
Sift	Benign	1.0	T
Sift4G	Benign	0.71	T
Polyphen		0.0	B
Vest4		0.085
MutPred		0.47		Loss of solvent accessibility (P = 0.0509)
MVP		0.28
MPC		0.75
ClinPred		0.23	T
GERP RS		5.0
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.7
Varity_R		0.26
gMVP		0.29
Mutation Taster		=18/82	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: rs3026906; hg19: chr1-21546501;