15-83018808-C-T

Variant names:

• chr15-83018808-C-T
• rs765497456
• NM_025238.4:c.1189G>A

Variant summary

Our verdict is Uncertain significance. The variant received 2 ACMG points: 2P and 0B. PM2

The NM_025238.4(BTBD1):​c.1189G>A​(p.Gly397Ser) variant causes a missense change involving the alteration of a conserved nucleotide. The variant allele was found at a frequency of 0.000013 in 1,613,888 control chromosomes in the GnomAD database, with no homozygous occurrence. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar. Another variant affecting the same amino acid position, but resulting in a different missense (i.e. G397C) has been classified as Uncertain significance.

• Frequency:
  • Genomes: 𝑓 0.0000066 (0 hom., cov: 32)
  • Exomes 𝑓: 0.000014 (0 hom.)
• Consequence: BTBD1 NM_025238.4 missense
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: 7.84
• Publications: 0 publications found

Genes affected

BTBD1 (HGNC:1120): (BTB domain containing 1) The C-terminus of the protein encoded by this gene binds topoisomerase I. The N-terminus contains a proline-rich region and a BTB/POZ domain (broad-complex, Tramtrack and bric a brac/Pox virus and Zinc finger), both of which are typically involved in protein-protein interactions. Subcellularly, the protein localizes to cytoplasmic bodies. Alternative splicing results in multiple transcript variants encoding different isoforms. [provided by RefSeq, Jul 2008]

ENSG00000259805 (HGNC:):

ACMG classification

Our verdict: Uncertain_significance. The variant received 2 ACMG points.

• PM2: Very rare variant in population databases, with high coverage

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_025238.4. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BTBD1	NM_025238.4	MANE Select	c.1189G>A	p.Gly397Ser	missense	Exon 7 of 8	NP_079514.1	Q9H0C5-1
	BTBD1	NM_001011885.2		c.1101G>A	p.Pro367Pro	synonymous	Exon 6 of 7	NP_001011885.1	Q9H0C5-2

Ensembl Transcripts

Sel.	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	BTBD1	ENST00000261721.9	TSL:1 MANE Select	c.1189G>A	p.Gly397Ser	missense	Exon 7 of 8	ENSP00000261721.4	Q9H0C5-1
	BTBD1	ENST00000944296.1		c.1306G>A	p.Gly436Ser	missense	Exon 8 of 9	ENSP00000614355.1
	BTBD1	ENST00000944299.1		c.1264G>A	p.Gly422Ser	missense	Exon 8 of 9	ENSP00000614358.1

Frequencies

GnomAD3 genomes AF: 0.00000657 AC: 1 AN: 152124 Hom.: 0 Cov.: 32

Gnomad AFR AF: 0.0000242

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: 0.00

Gnomad OTH AF: 0.00

GnomAD2 exomes AF: 0.00000398 AC: 1 AN: 251446 AF XY: 0.00

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 FIN exome AF: 0.00

Gnomad NFE exome AF: 0.00000879

Gnomad OTH exome AF: 0.00

GnomAD4 exome AF: 0.0000137 AC: 20 AN: 1461764 Hom.: 0 Cov.: 31 AF XY: 0.0000110 AC XY: 8 AN XY: 727216

African (AFR) AF: 0.00 AC: 0 AN: 33476

American (AMR) AF: 0.00 AC: 0 AN: 44724

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 26136

East Asian (EAS) AF: 0.00 AC: 0 AN: 39700

South Asian (SAS) AF: 0.0000116 AC: 1 AN: 86256

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 53416

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 5768

European-Non Finnish (NFE) AF: 0.0000153 AC: 17 AN: 1111898

Other (OTH) AF: 0.0000331 AC: 2 AN: 60390

GnomAD4 genome AF: 0.00000657 AC: 1 AN: 152124 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 74328

African (AFR) AF: 0.0000242 AC: 1 AN: 41400

American (AMR) AF: 0.00 AC: 0 AN: 15276

Ashkenazi Jewish (ASJ) AF: 0.00 AC: 0 AN: 3468

East Asian (EAS) AF: 0.00 AC: 0 AN: 5208

South Asian (SAS) AF: 0.00 AC: 0 AN: 4824

European-Finnish (FIN) AF: 0.00 AC: 0 AN: 10596

Middle Eastern (MID) AF: 0.00 AC: 0 AN: 316

European-Non Finnish (NFE) AF: 0.00 AC: 0 AN: 68034

Other (OTH) AF: 0.00 AC: 0 AN: 2092

Alfa AF: 0.0000282 Hom.: 0

Bravo AF: 0.0000113

ExAC AF: 0.00000824 AC: 1

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Uncertain	0.37
BayesDel_addAF	Pathogenic	0.27	D
BayesDel_noAF	Pathogenic	0.15
CADD	Benign	23
DANN	Benign	0.96
DEOGEN2	Benign	0.0096	T
Eigen	Benign	-0.11
Eigen_PC	Benign	0.12
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.91	D
M_CAP	Benign	0.032	D
MetaRNN	Uncertain	0.62	D
MetaSVM	Benign	-0.82	T
MutationAssessor	Benign	0.51	N
PhyloP100		7.8
PrimateAI	Pathogenic	0.87	D
PROVEAN	Benign	-0.070	N
REVEL	Uncertain	0.43
Sift	Benign	0.68	T
Sift4G	Benign	0.63	T
Polyphen		0.051	B
Vest4		0.91
MutPred		0.56		Loss of sheet (P = 0.0025)
MVP		0.89
MPC		0.51
ClinPred		0.75	D
GERP RS		5.2
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Varity_R		0.12
gMVP		0.34
Mutation Taster		=28/72	disease causing

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

Other links and lift over

dbSNP: rs765497456; hg19: chr15-83687560;