Variant chr1-92088783-A-G details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Uncertain significance. Variant got 4 ACMG points: 4P and 0B. PM2PP3_Moderate

The NM_001376131.1(BTBD8):c.235A>G(p.Arg79Gly) variant causes a missense change. The variant allele was found at a frequency of 0.00000137 in 1,461,044 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.

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0000014 ( 0 hom. )

Consequence

BTBD8
NM_001376131.1 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 5.42

Variant links:

Genes affected

BTBD8 (HGNC:21019): (BTB domain containing 8) Predicted to be involved in clathrin-dependent synaptic vesicle endocytosis; neuron projection development; and synaptic vesicle budding from endosome. Located in nucleoplasm. Colocalizes with AP-2 adaptor complex. [provided by Alliance of Genome Resources, Apr 2022]

BTBD8 links:

BTBD8 (HGNC:):

BTBD8 links:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 4 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

PP3

MetaRNN computational evidence supports a deleterious effect, 0.894

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
BTBD8	NM_001376131.1 linkuse as main transcript	c.235A>G	p.Arg79Gly	missense_variant	2/18	ENST00000636805.2	NP_001363060.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	UniProt
BTBD8	ENST00000636805.2 linkuse as main transcript	c.235A>G	p.Arg79Gly	missense_variant	2/18	5	NM_001376131.1	ENSP00000490161.1	Q5XKL5-3
BTBD8	ENST00000342818.4 linkuse as main transcript	c.235A>G	p.Arg79Gly	missense_variant	2/9	1		ENSP00000343686.3	A0A8V8N7F1
BTBD8	ENST00000370382.7 linkuse as main transcript	n.502A>G		non_coding_transcript_exon_variant	2/6	1
BTBD8	ENST00000635934.1 linkuse as main transcript	n.235A>G		non_coding_transcript_exon_variant	2/17	5		ENSP00000490386.1	B4DKD6

Frequencies

GnomAD3 genomes

Cov.:

GnomAD3 exomes

AF:

0.00000796

AC:

AN:

251336

Hom.:

AF XY:

0.00000736

AC XY:

AN XY:

135854

show subpopulations

Gnomad AFR exome

AF:

0.00

Gnomad AMR exome

AF:

0.00

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.00

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.00000880

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.00000137

AC:

AN:

1461044

Hom.:

Cov.:

AF XY:

0.00000138

AC XY:

AN XY:

726854

show subpopulations

Gnomad4 AFR exome

AF:

0.00

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:

0.00000180

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ExAC

AF:

0.0000165

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

Nov 11, 2024

The c.235A>G (p.R79G) alteration is located in exon 2 (coding exon 2) of the BTBD8 gene. This alteration results from a A to G substitution at nucleotide position 235, causing the arginine (R) at amino acid position 79 to be replaced by a glycine (G). 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

Pathogenic

0.95

BayesDel_addAF

Pathogenic

0.34

BayesDel_noAF

Pathogenic

0.26

CADD

Uncertain

DANN

Uncertain

1.0

DEOGEN2

Uncertain

0.59

.;D

Eigen

Uncertain

0.54

Eigen_PC

Uncertain

0.49

FATHMM_MKL

Uncertain

0.78

LIST_S2

Benign

0.81

T;T

M_CAP

Benign

0.030

MetaRNN

Pathogenic

0.89

D;D

MetaSVM

Benign

-0.44

MutationAssessor

Uncertain

2.8

.;M

PrimateAI

Benign

0.37

PROVEAN

Uncertain

-4.0

.;D

REVEL

Uncertain

0.63

Sift

Pathogenic

0.0

.;D

Sift4G

Pathogenic

0.0

.;D

Polyphen

1.0

.;D

Vest4

0.83

MutPred

0.74

Gain of catalytic residue at V80 (P = 0.0134);Gain of catalytic residue at V80 (P = 0.0134);

MVP

0.89

MPC

0.91

ClinPred

0.99

GERP RS

4.2

Varity_R

0.90

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