Variant 1-111318082-C-A details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_201653.4(CHIA):c.702C>A(p.Asp234Glu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000806 in 1,613,370 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 0.000026 ( 0 hom., cov: 32)

Exomes 𝑓: 0.0000062 ( 0 hom. )

Consequence

CHIA
NM_201653.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.571

Variant links:

Genes affected

CHIA (HGNC:17432): (chitinase acidic) The protein encoded by this gene degrades chitin, which is found in the cell wall of most fungi as well as in arthropods and some nematodes. The encoded protein can also stimulate interleukin 13 expression, and variations in this gene can lead to asthma susceptibility. Several transcript variants encoding a few different isoforms have been found for this gene. [provided by RefSeq, Apr 2012]

CHIA links:

(HGNC:):

links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.2006605).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
CHIA	NM_201653.4 linkuse as main transcript	c.702C>A	p.Asp234Glu	missense_variant	8/12	ENST00000369740.6	NP_970615.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
CHIA	ENST00000369740.6 linkuse as main transcript	c.702C>A	p.Asp234Glu	missense_variant	8/12	1	NM_201653.4	ENSP00000358755	P1	Q9BZP6-1
	ENST00000426321.1 linkuse as main transcript	n.149-155G>T		intron_variant, non_coding_transcript_variant		3

Frequencies

GnomAD3 genomes

AF:

0.0000197

AC:

AN:

152176

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000241

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000655

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:

0.00

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.00000399

AC:

AN:

250746

Hom.:

AF XY:

0.00000738

AC XY:

AN XY:

135570

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:

0.00000883

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000616

AC:

AN:

1461076

Hom.:

Cov.:

AF XY:

0.00000413

AC XY:

AN XY:

726936

show subpopulations

Gnomad4 AFR exome

AF:

0.000120

Gnomad4 AMR exome

AF:

0.0000224

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:

0.00000360

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152294

Hom.:

Cov.:

AF XY:

0.0000403

AC XY:

AN XY:

74462

show subpopulations

Gnomad4 AFR

AF:

0.0000481

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.00

Gnomad4 OTH

AF:

0.000473

Bravo

AF:

0.0000453

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

Feb 21, 2024

The c.702C>A (p.D234E) alteration is located in exon 8 (coding exon 7) of the CHIA gene. This alteration results from a C to A substitution at nucleotide position 702, causing the aspartic acid (D) at amino acid position 234 to be replaced by a glutamic acid (E). 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

0.22

BayesDel_addAF

Benign

-0.27

BayesDel_noAF

Benign

-0.63

CADD

Benign

8.3

DANN

Benign

0.76

DEOGEN2

Benign

0.15

.;.;T;.;T;.;.;.

Eigen

Benign

-0.83

Eigen_PC

Benign

-0.83

FATHMM_MKL

Benign

0.40

LIST_S2

Benign

0.68

T;.;.;T;T;.;T;T

M_CAP

Benign

0.0052

MetaRNN

Benign

0.20

T;T;T;T;T;T;T;T

MetaSVM

Benign

-0.90

MutationAssessor

Benign

1.4

.;.;L;.;L;.;.;.

MutationTaster

Benign

0.97

N;N;N;N;N;N

PrimateAI

Uncertain

0.55

PROVEAN

Benign

-1.6

N;N;N;N;N;N;N;N

REVEL

Benign

0.063

Sift

Benign

0.35

T;T;T;T;T;T;T;T

Sift4G

Benign

0.29

T;T;T;T;T;T;T;T

Polyphen

0.015

.;.;B;.;B;.;.;.

Vest4

0.30, 0.29, 0.29, 0.30

MutPred

0.70

.;.;Gain of disorder (P = 0.1221);.;Gain of disorder (P = 0.1221);.;.;.;

MVP

0.32

MPC

0.026

ClinPred

0.079

GERP RS

1.3

Varity_R

0.23

gMVP

0.58

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