Genetic Variant ATG4B:p.Arg90Trp (chr2-241653595-C-T) – ACMG Classification: Uncertain_significance (2 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_013325.5(ATG4B):c.268C>T(p.Arg90Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000198 in 1,569,232 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000026 ( 0 hom., cov: 33)

Exomes 𝑓: 0.000019 ( 0 hom. )

Consequence

ATG4B
NM_013325.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 3.09

Publications

0 publications found

Variant links:

Genes affected

ATG4B (HGNC:20790): (autophagy related 4B cysteine peptidase) Autophagy is the process by which endogenous proteins and damaged organelles are destroyed intracellularly. Autophagy is postulated to be essential for cell homeostasis and cell remodeling during differentiation, metamorphosis, non-apoptotic cell death, and aging. Reduced levels of autophagy have been described in some malignant tumors, and a role for autophagy in controlling the unregulated cell growth linked to cancer has been proposed. This gene encodes a member of the autophagin protein family. The encoded protein is also designated as a member of the C-54 family of cysteine proteases. Alternate transcriptional splice variants, encoding different isoforms, have been characterized. [provided by RefSeq, Jul 2008]

ATG4B links:

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ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_013325.5. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	ATG4B	NM_013325.5	MANE Select	c.268C>T	p.Arg90Trp	missense	Exon 4 of 13	NP_037457.3
	ATG4B	NM_178326.3		c.268C>T	p.Arg90Trp	missense	Exon 4 of 13	NP_847896.1	Q9Y4P1-6

Ensembl Transcripts

Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
ATG4B	ENST00000404914.8	TSL:1 MANE Select	c.268C>T	p.Arg90Trp	missense	Exon 4 of 13	ENSP00000384259.3	Q9Y4P1-1
ATG4B	ENST00000482507.5	TSL:1	n.348C>T		non_coding_transcript_exon	Exon 5 of 13
ATG4B	ENST00000902606.1		c.451C>T	p.Arg151Trp	missense	Exon 5 of 14	ENSP00000572665.1

Frequencies

GnomAD3 genomes

AF:

0.0000263

AC:

AN:

152170

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:

0.0000294

Gnomad OTH

AF:

0.00

GnomAD2 exomes

AF:

0.0000171

AC:

AN:

175794

AF XY:

0.0000106

show subpopulations

Gnomad AFR exome

AF:

0.000102

Gnomad AMR exome

AF:

0.0000373

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000138

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000191

AC:

AN:

1417062

Hom.:

Cov.:

AF XY:

0.0000186

AC XY:

AN XY:

700546

show subpopulations

African (AFR)

AF:

0.0000308

AC:

AN:

32438

American (AMR)

AF:

0.0000263

AC:

AN:

38054

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25356

East Asian (EAS)

AF:

0.0000269

AC:

AN:

37142

South Asian (SAS)

AF:

0.00

AC:

AN:

80312

European-Finnish (FIN)

AF:

0.0000199

AC:

AN:

50362

Middle Eastern (MID)

AF:

0.000174

AC:

AN:

5732

European-Non Finnish (NFE)

AF:

0.0000193

AC:

AN:

1088974

Other (OTH)

AF:

0.0000170

AC:

AN:

58692

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.445

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Age Distribution

Exome Het

Variant carriers

<30

30-35

35-40

40-45

45-50

50-55

55-60

60-65

65-70

70-75

75-80

>80

Age

GnomAD4 genome

AF:

0.0000263

AC:

AN:

152170

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74344

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41434

American (AMR)

AF:

0.0000655

AC:

AN:

15276

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3470

East Asian (EAS)

AF:

0.00

AC:

AN:

5180

South Asian (SAS)

AF:

0.00

AC:

AN:

4828

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10626

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.0000294

AC:

AN:

68038

Other (OTH)

AF:

0.00

AC:

AN:

2090

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.550

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.0000508

Hom.:

Bravo

AF:

0.0000302

ClinVar

ClinVar submissions

Significance:Uncertain significance

Revision:criteria provided, single submitter

View on ClinVar

Pathogenic

VUS

Benign

Condition

not specified (1)

Computational scores

Source: dbNSFP v4.9

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Benign

0.19

BayesDel_addAF

Uncertain

0.070

BayesDel_noAF

Benign

-0.14

CADD

Uncertain

(source)

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.47

Eigen

Uncertain

0.29

Eigen_PC

Uncertain

0.36

FATHMM_MKL

Uncertain

0.79

LIST_S2

Uncertain

0.96

M_CAP

Benign

0.012

MetaRNN

Uncertain

0.49

MetaSVM

Benign

-0.91

MutationAssessor

Uncertain

2.6

PhyloP100

3.1

PrimateAI

Pathogenic

0.84

PROVEAN

Pathogenic

-4.5

REVEL

Benign

0.15

Sift

Uncertain

0.0080

Sift4G

Benign

0.16

Polyphen

0.36

Vest4

0.67

MutPred

0.66

Gain of catalytic residue at R90 (P = 0.0067)

MVP

0.45

MPC

1.2

ClinPred

0.85

GERP RS

4.6

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.51

gMVP

0.81

Mutation Taster

=17/83

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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Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Variant Effect in Transcripts

RefSeq Transcripts

Ensembl Transcripts

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over