Variant 20-44484459-A-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 0 ACMG points: 2P and 2B. PM2BP4_Moderate

The NM_001039199.3(TTPAL):c.568A>G(p.Lys190Glu) variant causes a missense change. The variant allele was found at a frequency of 0.000234 in 1,605,864 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 0.00013 ( 0 hom., cov: 32)

Exomes 𝑓: 0.00024 ( 0 hom. )

Consequence

TTPAL
NM_001039199.3 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 6.27

Variant links:

Genes affected

TTPAL (HGNC:16114): (alpha tocopherol transfer protein like) Predicted to enable phosphatidylinositol bisphosphate binding activity. Located in membrane. [provided by Alliance of Genome Resources, Apr 2022]

TTPAL links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 0 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.13220382).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
TTPAL	NM_001039199.3 linkuse as main transcript	c.568A>G	p.Lys190Glu	missense_variant	3/5	ENST00000262605.9	NP_001034288.1	Q9BTX7B2RA57

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
TTPAL	ENST00000262605.9 linkuse as main transcript	c.568A>G	p.Lys190Glu	missense_variant	3/5	1	NM_001039199.3	ENSP00000262605.4	Q9BTX7
TTPAL	ENST00000372904.7 linkuse as main transcript	c.568A>G	p.Lys190Glu	missense_variant	4/6	1		ENSP00000361995.3	Q9BTX7
TTPAL	ENST00000456317.1 linkuse as main transcript	c.537+31A>G		intron_variant		2		ENSP00000412720.1	Q5QPC2
TTPAL	ENST00000372906.2 linkuse as main transcript	c.445+4015A>G		intron_variant		3		ENSP00000361997.2	A6PVK2

Frequencies

GnomAD3 genomes

AF:

0.000131

AC:

AN:

152214

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:

0.000279

Gnomad OTH

AF:

0.00

GnomAD3 exomes

AF:

0.000143

AC:

AN:

251400

Hom.:

AF XY:

0.000184

AC XY:

AN XY:

135884

show subpopulations

Gnomad AFR exome

AF:

0.0000615

Gnomad AMR exome

AF:

0.0000579

Gnomad ASJ exome

AF:

0.0000992

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.000264

Gnomad OTH exome

AF:

0.000326

GnomAD4 exome

AF:

0.000244

AC:

355

AN:

1453532

Hom.:

Cov.:

AF XY:

0.000259

AC XY:

187

AN XY:

721582

show subpopulations

Gnomad4 AFR exome

AF:

0.0000599

Gnomad4 AMR exome

AF:

0.0000672

Gnomad4 ASJ exome

AF:

0.000154

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000116

Gnomad4 FIN exome

AF:

0.0000188

Gnomad4 NFE exome

AF:

0.000301

Gnomad4 OTH exome

AF:

0.000183

GnomAD4 genome

AF:

0.000131

AC:

AN:

152332

Hom.:

Cov.:

AF XY:

0.000134

AC XY:

AN XY:

74496

show subpopulations

Gnomad4 AFR

AF:

0.0000240

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:

0.000279

Gnomad4 OTH

AF:

0.00

Alfa

AF:

0.000309

Hom.:

Bravo

AF:

0.000219

TwinsUK

AF:

0.000539

AC:

ALSPAC

AF:

0.00

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.000349

AC:

ExAC

AF:

0.000157

AC:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

Jul 25, 2023

The c.568A>G (p.K190E) alteration is located in exon 4 (coding exon 2) of the TTPAL gene. This alteration results from a A to G substitution at nucleotide position 568, causing the lysine (K) at amino acid position 190 to be replaced by a glutamic acid (E). 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

0.18

BayesDel_addAF

Benign

-0.20

BayesDel_noAF

Benign

-0.22

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Benign

0.036

T;T

Eigen

Benign

0.12

Eigen_PC

Uncertain

0.31

FATHMM_MKL

Pathogenic

0.98

LIST_S2

Uncertain

0.87

.;D

M_CAP

Benign

0.034

MetaRNN

Benign

0.13

T;T

MetaSVM

Benign

-0.69

MutationAssessor

Benign

-0.39

N;N

PrimateAI

Uncertain

0.74

PROVEAN

Benign

0.28

N;N

REVEL

Uncertain

0.33

Sift

Benign

0.75

T;T

Sift4G

Benign

0.94

T;T

Polyphen

0.80

P;P

Vest4

0.44

MVP

0.068

MPC

0.87

ClinPred

0.053

GERP RS

6.0

Varity_R

0.21

gMVP

0.81

Splicing

Name

Calibrated prediction

Score

Prediction

SpliceAI score (max)

0.050

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