Variant 12-101723182-G-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2PP3

The NM_020244.3(CHPT1):c.795G>T(p.Leu265Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000548 in 1,460,136 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: 0.0000055 ( 0 hom. )

Consequence

CHPT1
NM_020244.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.04

Variant links:

Genes affected

CHPT1 (HGNC:17852): (choline phosphotransferase 1) Enables diacylglycerol cholinephosphotransferase activity. Involved in phosphatidylcholine biosynthetic process and platelet activating factor biosynthetic process. Predicted to be located in Golgi membrane. Predicted to be active in Golgi apparatus and endoplasmic reticulum membrane. [provided by Alliance of Genome Resources, Apr 2022]

CHPT1 links:

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ACMG classification

Classification made for transcript

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, 0.804

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
CHPT1	NM_020244.3 linkuse as main transcript	c.795G>T	p.Leu265Phe	missense_variant	6/9	ENST00000229266.8

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
CHPT1	ENST00000229266.8 linkuse as main transcript	c.795G>T	p.Leu265Phe	missense_variant	6/9	1	NM_020244.3	P1	Q8WUD6-1

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000399

AC:

AN:

250400

Hom.:

AF XY:

0.00000739

AC XY:

AN XY:

135292

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000882

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000548

AC:

AN:

1460136

Hom.:

Cov.:

AF XY:

0.00000551

AC XY:

AN XY:

726394

show subpopulations

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:

0.00000720

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

Bravo

AF:

0.0000113

EpiCase

AF:

0.000164

EpiControl

AF:

0.00

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 30, 2023

The c.795G>T (p.L265F) alteration is located in exon 6 (coding exon 6) of the CHPT1 gene. This alteration results from a G to T substitution at nucleotide position 795, causing the leucine (L) at amino acid position 265 to be replaced by a phenylalanine (F). 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

0.41

BayesDel_addAF

Pathogenic

0.19

BayesDel_noAF

Uncertain

0.030

CADD

Benign

DANN

Uncertain

1.0

DEOGEN2

Benign

0.10

T;.

Eigen

Uncertain

0.39

Eigen_PC

Uncertain

0.26

FATHMM_MKL

Uncertain

0.91

LIST_S2

Pathogenic

0.98

D;.

M_CAP

Benign

0.053

MetaRNN

Pathogenic

0.80

D;D

MetaSVM

Benign

-0.57

MutationAssessor

Pathogenic

3.0

M;.

MutationTaster

Benign

1.0

D;D

PrimateAI

Uncertain

0.68

PROVEAN

Uncertain

-3.5

D;D

REVEL

Uncertain

0.35

Sift

Uncertain

0.0020

D;D

Sift4G

Uncertain

0.043

D;D

Polyphen

1.0

D;D

Vest4

0.85

MutPred

0.36

Gain of catalytic residue at S263 (P = 0);Gain of catalytic residue at S263 (P = 0);

MVP

0.81

MPC

1.0

ClinPred

0.96

GERP RS

3.1

Varity_R

0.54

gMVP

0.76

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

Below is the list of publications found by LitVar. It may be empty.

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

LitVar

Other links and lift over