Genetic Variant CASP6:p.Arg76Cys (chr4-109697626-G-A) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 1 ACMG points: 2P and 1B. PM2BP4

The NM_001226.4(CASP6):c.226C>T(p.Arg76Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000493 in 1,602,888 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. R76H) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.000039 ( 0 hom., cov: 32)

Exomes 𝑓: 0.000050 ( 0 hom. )

Consequence

CASP6
NM_001226.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.24

Publications

0 publications found

Variant links:

Genes affected

CASP6 (HGNC:1507): (caspase 6) This gene encodes a member of the cysteine-aspartic acid protease (caspase) family of enzymes. 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 acid residues to produce two subunits, large and small, that dimerize to form the active enzyme. This protein is processed by caspases 7, 8 and 10, and is thought to function as a downstream enzyme in the caspase activation cascade. Alternative splicing of this gene results in multiple transcript variants that encode different isoforms. [provided by RefSeq, Oct 2015]

CASP6 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.31682688).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
CASP6	NM_001226.4 link	c.226C>T	p.Arg76Cys	missense_variant	Exon 3 of 7	ENST00000265164.7	NP_001217.2	P55212-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
CASP6	ENST00000265164.7 link	c.226C>T	p.Arg76Cys	missense_variant	Exon 3 of 7	1	NM_001226.4	ENSP00000265164.2		P55212-1

Frequencies

GnomAD3 genomes

AF:

0.0000394

AC:

AN:

152138

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:

0.0000588

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000624

AC:

AN:

240242

AF XY:

0.0000385

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.000194

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000813

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000503

AC:

AN:

1450750

Hom.:

Cov.:

AF XY:

0.0000444

AC XY:

AN XY:

721324

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32858

American (AMR)

AF:

0.000143

AC:

AN:

41888

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25632

East Asian (EAS)

AF:

0.0000507

AC:

AN:

39422

South Asian (SAS)

AF:

0.00

AC:

AN:

83726

European-Finnish (FIN)

AF:

0.0000375

AC:

AN:

53282

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5702

European-Non Finnish (NFE)

AF:

0.0000559

AC:

AN:

1108314

Other (OTH)

AF:

0.0000167

AC:

AN:

59926

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.479

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.0000394

AC:

AN:

152138

Hom.:

Cov.:

AF XY:

0.0000538

AC XY:

AN XY:

74326

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41416

American (AMR)

AF:

0.0000655

AC:

AN:

15272

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5194

South Asian (SAS)

AF:

0.00

AC:

AN:

4822

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10614

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000588

AC:

AN:

68030

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.542

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.000112

Hom.:

Bravo

AF:

0.0000567

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.00

AC:

ExAC

AF:

0.0000412

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Dec 06, 2021

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.226C>T (p.R76C) alteration is located in exon 3 (coding exon 3) of the CASP6 gene. This alteration results from a C to T substitution at nucleotide position 226, causing the arginine (R) at amino acid position 76 to be replaced by a cysteine (C). 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

0.14

BayesDel_addAF

Benign

-0.25

BayesDel_noAF

Benign

-0.31

CADD

Uncertain

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.23

T;.;.

Eigen

Benign

-0.057

Eigen_PC

Benign

0.019

FATHMM_MKL

Uncertain

0.90

LIST_S2

Benign

0.79

T;T;T

M_CAP

Benign

0.028

MetaRNN

Benign

0.32

T;T;T

MetaSVM

Benign

-0.98

MutationAssessor

Uncertain

2.1

M;.;.

PhyloP100

2.2

PrimateAI

Benign

0.42

PROVEAN

Uncertain

-3.6

D;D;D

REVEL

Benign

0.16

Sift

Uncertain

0.024

D;T;D

Sift4G

Benign

0.087

T;.;D

Polyphen

0.014

B;.;.

Vest4

0.35

MutPred

0.50

Gain of glycosylation at S79 (P = 0.0142);.;Gain of glycosylation at S79 (P = 0.0142);

MVP

0.74

MPC

0.25

ClinPred

0.23

GERP RS

5.2

Varity_R

0.38

gMVP

0.68

Mutation Taster

=49/51

disease causing

(source)

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

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4-109697626-G-A

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over