Genetic Variant BTBD16:p.Arg21Trp (chr10-122276833-C-T) – ACMG Classification: Likely_benign (-5 pts)

Variant summary

Our verdict is Likely benign. Variant got -5 ACMG points: 0P and 5B. BP4BS2

The NM_144587.5(BTBD16):c.61C>T(p.Arg21Trp) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000818 in 1,614,244 control chromosomes in the GnomAD database, including 2 homozygotes. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.00053 ( 0 hom., cov: 33)

Exomes 𝑓: 0.00085 ( 2 hom. )

Consequence

BTBD16
NM_144587.5 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.0720

Variant links:

Genes affected

BTBD16 (HGNC:26340): (BTB domain containing 16) This gene encodes a protein that contains a BTB/POZ domain. This domain mediates protein-protein interactions. A mutation in this gene may be associated with bipolar disorder. [provided by RefSeq, Sep 2016]

BTBD16 links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Likely_benign. Variant got -5 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.38565466).

BS2

High Homozygotes in GnomAdExome4 at 2 AR gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BTBD16	NM_144587.5 link	c.61C>T	p.Arg21Trp	missense_variant	Exon 3 of 16	ENST00000260723.6	NP_653188.2	Q32M84-1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
BTBD16	ENST00000260723.6 link	c.61C>T	p.Arg21Trp	missense_variant	Exon 3 of 16	2	NM_144587.5	ENSP00000260723.4		Q32M84-1

Frequencies

GnomAD3 genomes

AF:

0.000532

AC:

AN:

152252

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.000169

Gnomad AMI

AF:

0.00

Gnomad AMR

AF:

0.000720

Gnomad ASJ

AF:

0.00

Gnomad EAS

AF:

0.00

Gnomad SAS

AF:

0.00

Gnomad FIN

AF:

0.00

Gnomad MID

AF:

0.00316

Gnomad NFE

AF:

0.000897

Gnomad OTH

AF:

0.000478

GnomAD3 exomes

AF:

0.000473

AC:

119

AN:

251384

Hom.:

AF XY:

0.000449

AC XY:

AN XY:

135872

show subpopulations

Gnomad AFR exome

AF:

0.000185

Gnomad AMR exome

AF:

0.000318

Gnomad ASJ exome

AF:

0.00

Gnomad EAS exome

AF:

0.00

Gnomad SAS exome

AF:

0.0000980

Gnomad FIN exome

AF:

0.0000462

Gnomad NFE exome

AF:

0.000880

Gnomad OTH exome

AF:

0.000163

GnomAD4 exome

AF:

0.000848

AC:

1239

AN:

1461874

Hom.:

Cov.:

AF XY:

0.000793

AC XY:

577

AN XY:

727232

show subpopulations

Gnomad4 AFR exome

AF:

0.0000597

Gnomad4 AMR exome

AF:

0.000358

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.000151

Gnomad4 FIN exome

AF:

0.0000374

Gnomad4 NFE exome

AF:

0.00105

Gnomad4 OTH exome

AF:

0.000580

GnomAD4 genome

AF:

0.000532

AC:

AN:

152370

Hom.:

Cov.:

AF XY:

0.000376

AC XY:

AN XY:

74508

show subpopulations

Gnomad4 AFR

AF:

0.000168

Gnomad4 AMR

AF:

0.000719

Gnomad4 ASJ

AF:

0.00

Gnomad4 EAS

AF:

0.00

Gnomad4 SAS

AF:

0.00

Gnomad4 FIN

AF:

0.00

Gnomad4 NFE

AF:

0.000897

Gnomad4 OTH

AF:

0.000473

Alfa

AF:

0.000728

Hom.:

Bravo

AF:

0.000627

TwinsUK

AF:

0.000270

AC:

ALSPAC

AF:

0.000778

AC:

ESP6500AA

AF:

0.00

AC:

ESP6500EA

AF:

0.00128

AC:

ExAC

AF:

0.000511

AC:

EpiCase

AF:

0.00115

EpiControl

AF:

0.000889

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Sep 14, 2021

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.61C>T (p.R21W) alteration is located in exon 3 (coding exon 2) of the BTBD16 gene. This alteration results from a C to T substitution at nucleotide position 61, causing the arginine (R) at amino acid position 21 to be replaced by a tryptophan (W). 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

0.29

BayesDel_addAF

Benign

-0.29

BayesDel_noAF

Benign

-0.26

CADD

Uncertain

DANN

Pathogenic

1.0

DEOGEN2

Benign

0.12

Eigen

Uncertain

0.49

Eigen_PC

Uncertain

0.42

FATHMM_MKL

Benign

0.56

LIST_S2

Uncertain

0.89

M_CAP

Benign

0.056

MetaRNN

Benign

0.39

MetaSVM

Benign

-0.53

MutationAssessor

Uncertain

2.5

PrimateAI

Uncertain

0.56

PROVEAN

Pathogenic

-5.1

REVEL

Benign

0.21

Sift

Pathogenic

0.0

Sift4G

Pathogenic

0.0

Polyphen

1.0

Vest4

0.70

MVP

0.71

MPC

0.64

ClinPred

0.21

GERP RS

4.0

Varity_R

0.72

gMVP

0.50

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