2-53774511-C-T

Position:

chr2-53774511-C-T

Variant summary

Our verdict is Likely benign. Variant got -2 ACMG points: 2P and 4B. PM2BP4_Strong

The NM_001008708.4(CHAC2):c.541C>T(p.Leu181Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000155 in 1,544,414 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: 𝑓 0.000013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000016 ( 0 hom. )

Consequence

CHAC2
NM_001008708.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.420

Variant links:

Genes affected

CHAC2 (HGNC:32363): (ChaC glutathione specific gamma-glutamylcyclotransferase 2) The protein encoded by this gene is a gamma-glutamyl cyclotransferase that catalyzes the conversion of glutathione to 5-oxoproline and cysteinylglycine. It is thought that this gene is upregulated in response to endoplasmic reticulum stress and that the glutathione depletion enhances apoptosis. [provided by RefSeq, Sep 2016]

CHAC2 links:

ASB3 (HGNC:16013): (ankyrin repeat and SOCS box containing 3) The protein encoded by this gene is a member of the ankyrin repeat and SOCS box-containing (ASB) family of proteins. They contain ankyrin repeat sequence and SOCS box domain. The SOCS box serves to couple suppressor of cytokine signalling (SOCS) proteins and their binding partners with the elongin B and C complex, possibly targeting them for degradation. Alternatively spliced transcript variants have been described for this gene. [provided by RefSeq, Jan 2011]

ASB3 links:

GPR75-ASB3 (HGNC:):

GPR75-ASB3 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.03250429).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein
CHAC2	NM_001008708.4 linkuse as main transcript	c.541C>T	p.Leu181Phe	missense_variant	3/3	ENST00000295304.5	NP_001008708.1
ASB3	NM_016115.5 linkuse as main transcript	c.-13-8926G>A		intron_variant		ENST00000263634.8	NP_057199.1
GPR75-ASB3	NM_001164165.2 linkuse as main transcript	c.102-8926G>A		intron_variant			NP_001157637.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CHAC2	ENST00000295304.5 linkuse as main transcript	c.541C>T	p.Leu181Phe	missense_variant	3/3	1	NM_001008708.4	ENSP00000295304	P1
ASB3	ENST00000263634.8 linkuse as main transcript	c.-13-8926G>A		intron_variant		1	NM_016115.5	ENSP00000263634	P1	Q9Y575-1

Frequencies

GnomAD3 genomes

AF:

0.0000131

AC:

AN:

152172

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.00

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.0000147

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.0000209

AC:

AN:

191312

Hom.:

AF XY:

0.0000392

AC XY:

AN XY:

102028

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:

0.000238

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000158

AC:

AN:

1392242

Hom.:

Cov.:

AF XY:

0.0000218

AC XY:

AN XY:

687256

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:

0.000137

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00000831

Gnomad4 OTH exome

AF:

0.0000522

GnomAD4 genome

AF:

0.0000131

AC:

AN:

152172

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74336

show subpopulations

Gnomad4 AFR

AF:

0.0000241

Gnomad4 AMR

AF:

0.00

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.0000712

Hom.:

Bravo

AF:

0.00000378

ExAC

AF:

0.0000247

AC:

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 06, 2024

The c.541C>T (p.L181F) alteration is located in exon 3 (coding exon 3) of the CHAC2 gene. This alteration results from a C to T substitution at nucleotide position 541, causing the leucine (L) at amino acid position 181 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

Benign

0.073

BayesDel_addAF

Benign

-0.40

BayesDel_noAF

Benign

-0.52

CADD

Benign

5.9

DANN

Uncertain

0.99

DEOGEN2

Benign

0.035

Eigen

Benign

-0.56

Eigen_PC

Benign

-0.53

FATHMM_MKL

Benign

0.46

LIST_S2

Benign

0.49

M_CAP

Benign

0.0054

MetaRNN

Benign

0.033

MetaSVM

Benign

-0.95

MutationAssessor

Benign

1.1

MutationTaster

Benign

0.69

PrimateAI

Benign

0.33

PROVEAN

Benign

-0.71

REVEL

Benign

0.035

Sift

Benign

0.12

Sift4G

Uncertain

0.031

Polyphen

0.0010

Vest4

0.099

MutPred

0.15

Loss of loop (P = 0.0112);

MVP

0.34

MPC

0.0023

ClinPred

0.044

GERP RS

2.0

Varity_R

0.029

gMVP

0.42

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

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