Genetic Variant PALS2:p.Val220Leu (chr7-24663596-G-T) – ACMG Classification: Uncertain_significance (0 pts)

Variant summary

Our verdict is Uncertain significance. The variant received 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001303037.2(PALS2):c.658G>T(p.Val220Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000503 in 1,590,342 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 (★).

Frequency

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

Exomes 𝑓: 0.0000049 ( 0 hom. )

Consequence

PALS2
NM_001303037.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 4.38

Publications

3 publications found

Variant links:

Genes affected

PALS2 (HGNC:18167): (protein associated with LIN7 2, MAGUK p55 family member) Members of the peripheral membrane-associated guanylate kinase (MAGUK) family function in tumor suppression and receptor clustering by forming multiprotein complexes containing distinct sets of transmembrane, cytoskeletal, and cytoplasmic signaling proteins. All MAGUKs contain a PDZ-SH3-GUK core and are divided into 4 subfamilies, DLG-like (see DLG1; MIM 601014), ZO1-like (see TJP1; MIM 601009), p55-like (see MPP1; MIM 305360), and LIN2-like (see CASK; MIM 300172), based on their size and the presence of additional domains. MPP6 is a member of the p55-like MAGUK subfamily (Tseng et al., 2001 [PubMed 11311936]).[supplied by OMIM, Mar 2008]

PALS2 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Uncertain_significance. The variant received 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.22023952).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
PALS2	NM_001303037.2 link	c.658G>T	p.Val220Leu	missense_variant	Exon 6 of 12	ENST00000222644.10	NP_001289966.1	Q9NZW5A0A024RA25

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
PALS2	ENST00000222644.10 link	c.658G>T	p.Val220Leu	missense_variant	Exon 6 of 12	1	NM_001303037.2	ENSP00000222644.4		Q9NZW5

Frequencies

GnomAD3 genomes

AF:

0.00000657

AC:

AN:

152148

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:

0.000192

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

GnomAD2 exomes

AF:

0.0000163

AC:

AN:

245806

AF XY:

0.0000225

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.000223

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.00000487

AC:

AN:

1438194

Hom.:

Cov.:

AF XY:

0.00000419

AC XY:

AN XY:

716556

show subpopulations

African (AFR)

AF:

0.00

AC:

AN:

32316

American (AMR)

AF:

0.00

AC:

AN:

42884

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

25882

East Asian (EAS)

AF:

0.000152

AC:

AN:

39368

South Asian (SAS)

AF:

0.00

AC:

AN:

84846

European-Finnish (FIN)

AF:

0.00

AC:

AN:

53232

Middle Eastern (MID)

AF:

0.00

AC:

AN:

5672

European-Non Finnish (NFE)

AF:

9.14e-7

AC:

AN:

1094480

Other (OTH)

AF:

0.00

AC:

AN:

59514

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.454

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.00000657

AC:

AN:

152148

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

74316

show subpopulations

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00

AC:

AN:

41436

American (AMR)

AF:

0.00

AC:

AN:

15270

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3472

East Asian (EAS)

AF:

0.000192

AC:

AN:

5198

South Asian (SAS)

AF:

0.00

AC:

AN:

4832

European-Finnish (FIN)

AF:

0.00

AC:

AN:

10608

Middle Eastern (MID)

AF:

0.00

AC:

AN:

316

European-Non Finnish (NFE)

AF:

0.00

AC:

AN:

68014

Other (OTH)

AF:

0.00

AC:

AN:

2092

⚠️ The allele balance in gnomAD version 4 Genomes is significantly skewed from the expected value of 0.5. (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.375

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00

Hom.:

Bravo

AF:

0.0000340

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

Nov 18, 2022

Ambry Genetics

Significance:Uncertain significance

Review Status:criteria provided, single submitter

Collection Method:clinical testing

The c.658G>T (p.V220L) alteration is located in exon 7 (coding exon 5) of the MPP6 gene. This alteration results from a G to T substitution at nucleotide position 658, causing the valine (V) at amino acid position 220 to be replaced by a leucine (L). 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

0.39

BayesDel_addAF

Benign

-0.13

BayesDel_noAF

Benign

-0.16

CADD

Benign

(source)

DANN

Uncertain

0.99

DEOGEN2

Benign

0.086

T;T;T;T

Eigen

Benign

0.17

Eigen_PC

Uncertain

0.36

FATHMM_MKL

Uncertain

0.96

LIST_S2

Uncertain

0.91

.;D;D;D

M_CAP

Benign

0.033

MetaRNN

Benign

0.22

T;T;T;T

MetaSVM

Uncertain

-0.015

MutationAssessor

Benign

1.9

L;.;L;.

PhyloP100

4.4

PrimateAI

Uncertain

0.72

PROVEAN

Benign

-1.9

N;N;N;N

REVEL

Uncertain

0.39

Sift

Benign

0.047

D;T;D;T

Sift4G

Benign

0.10

T;T;T;T

Polyphen

0.071

B;.;B;.

Vest4

0.39

MutPred

0.61

Gain of catalytic residue at V220 (P = 0.0527);.;Gain of catalytic residue at V220 (P = 0.0527);Gain of catalytic residue at V220 (P = 0.0527);

MVP

0.70

MPC

0.63

ClinPred

0.22

GERP RS

6.1

Varity_R

0.23

gMVP

0.43

Mutation Taster

=40/60

disease causing

(source)

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

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7-24663596-G-T

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