Genetic Variant AP5Z1:p.Thr224Lys (chr7-4784252-C-A) – ACMG Classification: Uncertain_significance (4 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_014855.3(AP5Z1):c.671C>A(p.Thr224Lys) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.00000126 in 1,590,636 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. T224M) has been classified as Uncertain significance.

Frequency

Genomes: 𝑓 0.0000066 ( 0 hom., cov: 33)

Exomes 𝑓: 7.0e-7 ( 0 hom. )

Consequence

AP5Z1
NM_014855.3 missense

Scores

Clinical Significance

Not reported in ClinVar

Conservation

PhyloP100: 7.46

Publications

4 publications found

Variant links:

Genes affected

AP5Z1 (HGNC:22197): (adaptor related protein complex 5 subunit zeta 1) This gene was identified by genome-wide screen for genes involved in homologous recombination DNA double-strand break repair (HR-DSBR). The encoded protein was found in a complex with other proteins that have a role in HR-DSBR. Knockdown of this gene reduced homologous recombination, and mutations in this gene were found in patients with spastic paraplegia. It was concluded that this gene likely encodes a helicase (PMID:20613862). [provided by RefSeq, Jan 2011]

AP5Z1 Gene-Disease associations (from GenCC):

hereditary spastic paraplegia
Inheritance: AR Classification: DEFINITIVE Submitted by: ClinGen
hereditary spastic paraplegia 48
Inheritance: AR Classification: STRONG, MODERATE, SUPPORTIVE Submitted by: Genomics England PanelApp, Ambry Genetics, Labcorp Genetics (formerly Invitae), Orphanet

AP5Z1 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.899

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
AP5Z1	NM_014855.3 link	c.671C>A	p.Thr224Lys	missense_variant	Exon 6 of 17	ENST00000649063.2	NP_055670.1	O43299-1
AP5Z1	NM_001364858.1 link	c.203C>A	p.Thr68Lys	missense_variant	Exon 5 of 16		NP_001351787.1
AP5Z1	XM_047421098.1 link	c.335C>A	p.Thr112Lys	missense_variant	Exon 4 of 15		XP_047277054.1
AP5Z1	NR_157345.1 link	n.764C>A		non_coding_transcript_exon_variant	Exon 6 of 17

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
AP5Z1	ENST00000649063.2 link	c.671C>A	p.Thr224Lys	missense_variant	Exon 6 of 17		NM_014855.3	ENSP00000497815.1		O43299-1

Frequencies

GnomAD3 genomes

AF:

0.00000658

AC:

AN:

151994

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:

0.00

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

6.95e-7

AC:

AN:

1438642

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

714218

show subpopulations

African (AFR)

AF:

0.0000303

AC:

AN:

32978

American (AMR)

AF:

0.00

AC:

AN:

41988

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25432

East Asian (EAS)

AF:

0.00

AC:

AN:

38414

South Asian (SAS)

AF:

0.00

AC:

AN:

83106

European-Finnish (FIN)

AF:

0.00

AC:

AN:

49882

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5714

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

1101792

Other (OTH)

AF:

0.00

AC:

AN:

59336

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.625

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:

0.00000658

AC:

AN:

151994

Hom.:

Cov.:

AF XY:

0.0000135

AC XY:

AN XY:

74224

show subpopulations

African (AFR)

AF:

0.0000241

AC:

AN:

41426

American (AMR)

AF:

0.00

AC:

AN:

15272

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.00

AC:

AN:

5148

South Asian (SAS)

AF:

0.00

AC:

AN:

4784

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10616

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

67956

Other (OTH)

AF:

0.00

AC:

AN:

2092

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.525

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000113

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

AlphaMissense

Pathogenic

0.99

BayesDel_addAF

Pathogenic

0.39

BayesDel_noAF

Pathogenic

0.33

CADD

Pathogenic

(source)

DANN

Uncertain

0.99

DEOGEN2

Uncertain

0.46

T;T

Eigen

Uncertain

0.65

Eigen_PC

Uncertain

0.54

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.93

.;D

M_CAP

Uncertain

0.28

MetaRNN

Pathogenic

0.90

D;D

MetaSVM

Uncertain

0.36

MutationAssessor

Uncertain

2.8

M;M

PhyloP100

7.5

PrimateAI

Uncertain

0.57

PROVEAN

Pathogenic

-5.1

D;.

REVEL

Pathogenic

0.88

Sift

Pathogenic

0.0

D;.

Sift4G

Uncertain

0.0090

D;.

Polyphen

1.0

D;D

Vest4

0.93

MutPred

0.69

Gain of solvent accessibility (P = 0.012);Gain of solvent accessibility (P = 0.012);

MVP

0.35

ClinPred

1.0

GERP RS

4.3

Varity_R

0.86

gMVP

0.85

Mutation Taster

=43/57

disease causing

(source)

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.020

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

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

ClinVar

Computational scores

Splicing

Publications

Other links and lift over