chr7-100893426-C-T

Variant names:

• chr7-100893426-C-T
• rs17228581
• NM_000665.5:c.807G>A

Variant summary

Our verdict is Benign. The variant received -15 ACMG points: 0P and 15B. BP4_Strong BP6_Moderate BP7 BS1 BS2

The NM_000665.5(ACHE):​c.807G>A​(p.Thr269Thr) variant causes a synonymous change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000886 in 1,610,146 control chromosomes in the GnomAD database, including 12 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Benign (★).

• Frequency:
  • Genomes: 𝑓 0.0047 (3 hom., cov: 32)
  • Exomes 𝑓: 0.00048 (9 hom.)
• Consequence: ACHE NM_000665.5 synonymous
• Clinical Significance: Benign criteria provided, single submitter B:1
• Conservation: PhyloP100: -10.9

Genes affected

ACHE (HGNC:108): (acetylcholinesterase (Yt blood group)) Acetylcholinesterase hydrolyzes the neurotransmitter, acetylcholine at neuromuscular junctions and brain cholinergic synapses, and thus terminates signal transmission. It is also found on the red blood cell membranes, where it constitutes the Yt blood group antigen. Acetylcholinesterase exists in multiple molecular forms which possess similar catalytic properties, but differ in their oligomeric assembly and mode of cell attachment to the cell surface. It is encoded by the single ACHE gene, and the structural diversity in the gene products arises from alternative mRNA splicing, and post-translational associations of catalytic and structural subunits. The major form of acetylcholinesterase found in brain, muscle and other tissues is the hydrophilic species, which forms disulfide-linked oligomers with collagenous, or lipid-containing structural subunits. The other, alternatively spliced form, expressed primarily in the erythroid tissues, differs at the C-terminal end, and contains a cleavable hydrophobic peptide with a GPI-anchor site. It associates with the membranes through the phosphoinositide (PI) moieties added post-translationally. AChE activity may constitute a sensitive biomarker of RBC ageing in vivo, and thus, may be of aid in understanding the effects of transfusion[provided by RefSeq, Sep 2019]

ACMG classification

Our verdict: Benign. The variant received -15 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.89).
• BP6: Variant 7-100893426-C-T is Benign according to our data. Variant chr7-100893426-C-T is described in ClinVar as [Benign]. Clinvar id is 733662.Status of the report is criteria_provided_single_submitter, 1 stars.
• BP7: Synonymous conserved (PhyloP=-10.9 with no splicing effect.
• BS1: Variant frequency is greater than expected in population afr. GnomAd4 allele frequency = 0.00475 (723/152358) while in subpopulation AFR AF = 0.0162 (674/41592). AF 95% confidence interval is 0.0152. There are 3 homozygotes in GnomAd4. There are 317 alleles in the male GnomAd4 subpopulation. Median coverage is 32. This position FAILED quality control check.
• BS2: High Homozygotes in GnomAd4 at 3 BG gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
ACHE	NM_000665.5	c.807G>A	p.Thr269Thr	synonymous_variant	Exon 2 of 5	ENST00000241069.11	NP_000656.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
ACHE	ENST00000241069.11	c.807G>A	p.Thr269Thr	synonymous_variant	Exon 2 of 5	1	NM_000665.5	ENSP00000241069.5

Frequencies

GnomAD3 genomes AF: 0.00474 AC: 721 AN: 152240 Hom.: 3 Cov.: 32

Gnomad AFR AF: 0.0162

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.00209

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000193

Gnomad SAS AF: 0.000620

Gnomad FIN AF: 0.00

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000735

Gnomad OTH AF: 0.00382

GnomAD2 exomes AF: 0.00132 AC: 323 AN: 244146 AF XY: 0.00103

Gnomad AFR exome AF: 0.0175

Gnomad AMR exome AF: 0.000873

Gnomad ASJ exome AF: 0.00

Gnomad EAS exome AF: 0.000165

Gnomad FIN exome AF: 0.00

Gnomad NFE exome AF: 0.0000996

Gnomad OTH exome AF: 0.000499

GnomAD4 exome AF: 0.000482 AC: 703 AN: 1457788 Hom.: 9 Cov.: 32 AF XY: 0.000481 AC XY: 349 AN XY: 725256

Gnomad4 AFR exome AF: 0.0155 AC: 519 AN: 33468

Gnomad4 AMR exome AF: 0.000829 AC: 37 AN: 44640

Gnomad4 ASJ exome AF: 0.00 AC: 0 AN: 26068

Gnomad4 EAS exome AF: 0.0000756 AC: 3 AN: 39660

Gnomad4 SAS exome AF: 0.000197 AC: 17 AN: 86162

Gnomad4 FIN exome AF: 0.00 AC: 0 AN: 50280

Gnomad4 NFE exome AF: 0.0000585 AC: 65 AN: 1111446

Gnomad4 Remaining exome AF: 0.000962 AC: 58 AN: 60316

GnomAD4 genome AF: 0.00475 AC: 723 AN: 152358 Hom.: 3 Cov.: 32 AF XY: 0.00425 AC XY: 317 AN XY: 74508

Gnomad4 AFR AF: 0.0162 AC: 0.016205 AN: 0.016205

Gnomad4 AMR AF: 0.00209 AC: 0.00209014 AN: 0.00209014

Gnomad4 ASJ AF: 0.00 AC: 0 AN: 0

Gnomad4 EAS AF: 0.000193 AC: 0.000192976 AN: 0.000192976

Gnomad4 SAS AF: 0.000621 AC: 0.000620861 AN: 0.000620861

Gnomad4 FIN AF: 0.00 AC: 0 AN: 0

Gnomad4 NFE AF: 0.0000735 AC: 0.0000735056 AN: 0.0000735056

Gnomad4 OTH AF: 0.00378 AC: 0.00378072 AN: 0.00378072

Alfa AF: 0.00130 Hom.: 0

Bravo AF: 0.00498

Asia WGS AF: 0.00173 AC: 6 AN: 3478

EpiCase AF: 0.000164

EpiControl AF: 0.000237

ClinVar

Significance: Benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

Submissions by phenotype

not provided Benign:1

Jul 11, 2018

Labcorp Genetics (formerly Invitae), Labcorp

Significance: Benign

Review Status: criteria provided, single submitter

Collection Method: clinical testing

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Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.89
CADD	Benign	0.013
DANN	Benign	0.89
Mutation Taster		=100/0	polymorphism

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: rs17228581; hg19: chr7-100491047;