dbSNP rs1439638060: CASP1:p.Ile328Phe (chr11-105029148-T-A) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001257118.3(CASP1):c.982A>T(p.Ile328Phe) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00000124 in 1,613,130 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 32)

Exomes 𝑓: 6.8e-7 ( 0 hom. )

Consequence

CASP1
NM_001257118.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.78

Variant links:

Genes affected

CASP1 (HGNC:1499): (caspase 1) This gene encodes a protein which is a member of the cysteine-aspartic acid protease (caspase) family. Sequential activation of caspases plays a central role in the execution-phase of cell apoptosis. Caspases exist as inactive proenzymes which undergo proteolytic processing at conserved aspartic residues to produce 2 subunits, large and small, that dimerize to form the active enzyme. This gene was identified by its ability to proteolytically cleave and activate the inactive precursor of interleukin-1, a cytokine involved in the processes such as inflammation, septic shock, and wound healing. This gene has been shown to induce cell apoptosis and may function in various developmental stages. Studies of a similar gene in mouse suggest a role in the pathogenesis of Huntington disease. Alternative splicing results in transcript variants encoding distinct isoforms. [provided by RefSeq, Mar 2012]

CASP1 links:

LOC124902742 (HGNC:):

LOC124902742 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CASP1	NM_001257118.3 link	c.982A>T	p.Ile328Phe	missense_variant	Exon 7 of 9	ENST00000533400.6	NP_001244047.1	P29466-1A8K249

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CASP1	ENST00000533400.6 link	c.982A>T	p.Ile328Phe	missense_variant	Exon 7 of 9	1	NM_001257118.3	ENSP00000433138.1		P29466-1

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152126

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.00

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

GnomAD4 exome

AF:

6.84e-7

AC:

AN:

1461004

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726806

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:

0.0000116

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152126

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74312

show subpopulations

Gnomad4 AFR

AF:

0.00

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

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Oct 12, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.982A>T (p.I328F) alteration is located in exon 7 (coding exon 7) of the CASP1 gene. This alteration results from a A to T substitution at nucleotide position 982, causing the isoleucine (I) at amino acid position 328 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

0.55

BayesDel_addAF

Benign

-0.030

BayesDel_noAF

Benign

-0.28

CADD

Uncertain

DANN

Uncertain

0.99

DEOGEN2

Benign

0.043

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

Eigen

Uncertain

0.28

Eigen_PC

Benign

0.17

FATHMM_MKL

Benign

0.71

LIST_S2

Uncertain

0.96

D;D;D;.;D;D;D

M_CAP

Benign

0.012

MetaRNN

Uncertain

0.63

D;D;D;D;D;D;D

MetaSVM

Benign

-1.1

MutationAssessor

Pathogenic

3.3

.;.;.;M;M;.;.

PrimateAI

Benign

0.48

PROVEAN

Uncertain

-3.7

D;D;D;D;D;D;D

REVEL

Benign

0.19

Sift

Pathogenic

0.0

D;D;D;D;D;D;D

Sift4G

Uncertain

0.0030

D;D;D;D;D;D;D

Polyphen

1.0

.;D;D;D;D;D;D

Vest4

0.55, 0.60, 0.53, 0.60, 0.52

MutPred

0.70

.;.;.;Loss of ubiquitination at K325 (P = 0.1231);Loss of ubiquitination at K325 (P = 0.1231);.;.;

MVP

0.76

MPC

0.78

ClinPred

0.98

GERP RS

2.0

Varity_R

0.87

gMVP

0.64

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