Variant chr1-39521520-C-T details in Genebe, Genetics Data Aggregator

Variant summary

Our verdict is Benign. Variant got -8 ACMG points: 0P and 8B. BP4_StrongBS2

The NM_181809.4(BMP8A):c.818C>T(p.Pro273Leu) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000293 in 784,080 control chromosomes in the GnomAD database, including 8 homozygotes. In-silico tool predicts a benign outcome for this variant. 14/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: 𝑓 0.000015 ( 0 hom., cov: 7)

Exomes 𝑓: 0.000029 ( 8 hom. )

Failed GnomAD Quality Control

Consequence

BMP8A
NM_181809.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: -1.04

Variant links:

Genes affected

BMP8A (HGNC:21650): (bone morphogenetic protein 8a) This gene encodes a secreted ligand of the TGF-beta (transforming growth factor-beta) superfamily of proteins. Ligands of this family bind various TGF-beta receptors leading to recruitment and activation of SMAD family transcription factors that regulate gene expression. The encoded preproprotein is proteolytically processed to generate each subunit of the disulfide-linked homodimer. This protein may play a role in development of the reproductive system. This gene may have arose from a gene duplication event and its gene duplicate is also present on chromosome 1. [provided by RefSeq, Jul 2016]

BMP8A links:

Genome browser will be placed here

ACMG classification

Classification made for transcript

Verdict is Benign. Variant got -8 ACMG points.

BP4

Computational evidence support a benign effect (MetaRNN=0.06032279).

BS2

High Homozygotes in GnomAdExome4 at 8 gene

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
BMP8A	NM_181809.4 linkuse as main transcript	c.818C>T	p.Pro273Leu	missense_variant	4/7	ENST00000331593.6	NP_861525.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
BMP8A	ENST00000331593.6 linkuse as main transcript	c.818C>T	p.Pro273Leu	missense_variant	4/7	1	NM_181809.4	ENSP00000327440	P1

Frequencies

GnomAD3 genomes

AF:

0.00

AC:

AN:

65608

Hom.:

Cov.:

FAILED QC

Gnomad AFR

AF:

0.0000494

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

GnomAD3 exomes

AF:

0.0000337

AC:

AN:

118796

Hom.:

AF XY:

0.0000609

AC XY:

AN XY:

65718

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:

0.000120

Gnomad FIN exome

AF:

0.00

Gnomad NFE exome

AF:

0.0000328

Gnomad OTH exome

AF:

0.00

GnomAD4 exome

AF:

0.0000293

AC:

AN:

784080

Hom.:

Cov.:

AF XY:

0.0000359

AC XY:

AN XY:

390248

show subpopulations

Gnomad4 AFR exome

AF:

0.000146

Gnomad4 AMR exome

AF:

0.00

Gnomad4 ASJ exome

AF:

0.00

Gnomad4 EAS exome

AF:

0.00

Gnomad4 SAS exome

AF:

0.0000424

Gnomad4 FIN exome

AF:

0.00

Gnomad4 NFE exome

AF:

0.0000290

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Data not reliable, filtered out with message: AS_VQSR

AF:

0.0000152

AC:

AN:

65608

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

30598

show subpopulations

Gnomad4 AFR

AF:

0.0000494

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:

0.00

Gnomad4 OTH

AF:

0.00

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

May 23, 2023

The c.818C>T (p.P273L) alteration is located in exon 4 (coding exon 4) of the BMP8A gene. This alteration results from a C to T substitution at nucleotide position 818, causing the proline (P) at amino acid position 273 to be replaced by a leucine (L). 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

0.072

BayesDel_addAF

Benign

-0.32

BayesDel_noAF

Benign

-0.47

CADD

Benign

9.4

DANN

Benign

0.85

DEOGEN2

Benign

0.32

Eigen

Benign

-0.86

Eigen_PC

Benign

-0.90

FATHMM_MKL

Benign

0.039

LIST_S2

Benign

0.72

M_CAP

Benign

0.079

MetaRNN

Benign

0.060

MetaSVM

Benign

-0.93

MutationAssessor

Benign

0.69

MutationTaster

Benign

1.0

PrimateAI

Uncertain

0.59

PROVEAN

Uncertain

-3.7

REVEL

Benign

0.055

Sift

Benign

0.64

Sift4G

Benign

0.38

Polyphen

0.047

Vest4

0.13

MutPred

0.29

Loss of glycosylation at P273 (P = 0.0068);

MVP

0.51

MPC

1.5

ClinPred

0.077

GERP RS

1.0

Varity_R

0.080

gMVP

0.45

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