17-81085704-G-T

Position:

chr17-81085704-G-T

Variant summary

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

The NM_001144888.2(BAIAP2):c.330G>T(p.Glu110Asp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000254 in 1,613,656 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00014 ( 0 hom., cov: 34)

Exomes 𝑓: 0.000014 ( 0 hom. )

Consequence

BAIAP2
NM_001144888.2 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 2.02

Variant links:

Genes affected

BAIAP2 (HGNC:947): (BAR/IMD domain containing adaptor protein 2) The protein encoded by this gene has been identified as a brain-specific angiogenesis inhibitor (BAI1)-binding protein. This adaptor protein links membrane bound G-proteins to cytoplasmic effector proteins. This protein functions as an insulin receptor tyrosine kinase substrate and suggests a role for insulin in the central nervous system. It also associates with a downstream effector of Rho small G proteins, which is associated with the formation of stress fibers and cytokinesis. This protein is involved in lamellipodia and filopodia formation in motile cells and may affect neuronal growth-cone guidance. This protein has also been identified as interacting with the dentatorubral-pallidoluysian atrophy gene, which is associated with an autosomal dominant neurodegenerative disease. Alternative splicing results in multiple transcript variants encoding distinct isoforms.[provided by RefSeq, Jan 2009]

BAIAP2 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=0.09461662).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
BAIAP2	NM_001144888.2 linkuse as main transcript	c.330G>T	p.Glu110Asp	missense_variant	5/14	ENST00000428708.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
BAIAP2	ENST00000428708.7 linkuse as main transcript	c.330G>T	p.Glu110Asp	missense_variant	5/14	1	NM_001144888.2	A1	Q9UQB8-2

Frequencies

GnomAD3 genomes

AF:

0.000138

AC:

AN:

152260

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000434

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.0000654

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:

0.0000147

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.0000359

AC:

AN:

250678

Hom.:

AF XY:

0.0000368

AC XY:

AN XY:

135760

show subpopulations

Gnomad AFR exome

AF:

0.000556

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000137

AC:

AN:

1461396

Hom.:

Cov.:

AF XY:

0.0000110

AC XY:

AN XY:

726998

show subpopulations

Gnomad4 AFR exome

AF:

0.000568

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.00

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.00

Gnomad4 OTH exome

AF:

0.0000166

GnomAD4 genome

AF:

0.000138

AC:

AN:

152260

Hom.:

Cov.:

AF XY:

0.000188

AC XY:

AN XY:

74386

show subpopulations

Gnomad4 AFR

AF:

0.000434

Gnomad4 AMR

AF:

0.0000654

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.0000147

Gnomad4 OTH

AF:

0.000478

Alfa

AF:

0.000132

Hom.:

Bravo

AF:

0.000159

ESP6500AA

AF:

0.000454

AC:

ESP6500EA

AF:

0.00

AC:

ExAC

AF:

0.0000577

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

Jan 23, 2023

The c.330G>T (p.E110D) alteration is located in exon 5 (coding exon 5) of the BAIAP2 gene. This alteration results from a G to T substitution at nucleotide position 330, causing the glutamic acid (E) at amino acid position 110 to be replaced by an aspartic acid (D). 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

0.21

BayesDel_addAF

Benign

-0.31

BayesDel_noAF

Benign

-0.33

CADD

Benign

DANN

Uncertain

0.99

DEOGEN2

Benign

0.28

.;.;.;.;.;.;T;.;T;.;T;T;.

Eigen

Benign

-0.40

Eigen_PC

Benign

-0.32

FATHMM_MKL

Benign

0.74

LIST_S2

Uncertain

0.93

D;D;D;D;D;D;D;D;D;D;D;D;D

M_CAP

Benign

0.0049

MetaRNN

Benign

0.095

T;T;T;T;T;T;T;T;T;T;T;T;T

MetaSVM

Benign

-1.1

MutationAssessor

Benign

0.94

L;.;L;L;.;L;L;.;.;.;.;.;.

MutationTaster

Benign

1.0

D;D;D;D;D;D;D

PrimateAI

Uncertain

0.71

PROVEAN

Benign

-1.0

N;.;N;.;.;N;N;.;.;.;.;.;.

REVEL

Benign

0.16

Sift

Benign

0.29

T;.;T;.;.;T;T;.;.;.;.;.;.

Sift4G

Benign

0.36

T;T;T;T;T;T;T;T;T;T;T;T;T

Polyphen

0.027

B;.;B;B;.;B;B;.;.;.;.;.;.

Vest4

0.29

MutPred

0.45

Loss of methylation at K108 (P = 0.0801);.;Loss of methylation at K108 (P = 0.0801);Loss of methylation at K108 (P = 0.0801);.;Loss of methylation at K108 (P = 0.0801);Loss of methylation at K108 (P = 0.0801);.;.;.;.;.;.;

MVP

0.85

MPC

0.66

ClinPred

0.036

GERP RS

-0.28

RBP_binding_hub_radar

0.0

RBP_regulation_power_radar

1.7

Varity_R

0.44

gMVP

0.34

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

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