Genetic Variant NM_181809.4:c.137G>A (chr1-39492128-G-A) – ACMG Classification: Uncertain_significance (1 pts)

Variant summary

Our verdict is Uncertain significance. Variant got 1 ACMG points: 2P and 1B. PM2BP4

The NM_181809.4(BMP8A):c.137G>A(p.Arg46His) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★).

Frequency

Genomes: not found (cov: 32)

Exomes 𝑓: 0.0 ( 0 hom. )

Failed GnomAD Quality Control

Consequence

BMP8A
NM_181809.4 missense

Scores

Clinical Significance

Uncertain significance criteria provided, single submitter U:1

Conservation

PhyloP100: 0.932

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:

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ACMG classification

Classification made for transcript

Verdict is Uncertain_significance. Variant got 1 ACMG points.

PM2

Very rare variant in population databases, with high coverage;

BP4

Computational evidence support a benign effect (MetaRNN=0.38674772).

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BMP8A	NM_181809.4 link	c.137G>A	p.Arg46His	missense_variant	Exon 1 of 7	ENST00000331593.6	NP_861525.2	Q7Z5Y6

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
BMP8A	ENST00000331593.6 link	c.137G>A	p.Arg46His	missense_variant	Exon 1 of 7	1	NM_181809.4	ENSP00000327440.5		Q7Z5Y6

Frequencies

GnomAD3 genomes

Cov.:

GnomAD4 exome

Data not reliable, filtered out with message: AC0

AF:

0.00

AC:

AN:

1083680

Hom.:

Cov.:

AF XY:

0.00

AC XY:

AN XY:

520654

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:

0.00

Gnomad4 OTH exome

AF:

0.00

GnomAD4 genome

Cov.:

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not specified

Uncertain:1

Sep 03, 2024

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.137G>A (p.R46H) alteration is located in exon 1 (coding exon 1) of the BMP8A gene. This alteration results from a G to A substitution at nucleotide position 137, causing the arginine (R) at amino acid position 46 to be replaced by a histidine (H). 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

0.20

BayesDel_addAF

Benign

-0.094

BayesDel_noAF

Benign

-0.37

CADD

Pathogenic

DANN

Uncertain

1.0

DEOGEN2

Benign

0.31

Eigen

Benign

0.18

Eigen_PC

Benign

0.064

FATHMM_MKL

Benign

0.55

LIST_S2

Uncertain

0.92

M_CAP

Pathogenic

0.33

MetaRNN

Benign

0.39

MetaSVM

Benign

-0.52

MutationAssessor

Pathogenic

3.0

PrimateAI

Pathogenic

0.93

PROVEAN

Uncertain

-3.2

REVEL

Uncertain

0.29

Sift

Benign

0.34

Sift4G

Benign

0.52

Polyphen

1.0

Vest4

0.11

MutPred

0.64

Loss of MoRF binding (P = 0.0084);

MVP

0.82

MPC

3.1

ClinPred

1.0

GERP RS

2.4

Varity_R

0.14

gMVP

0.41

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