6-7727185-G-A

Position:

• chr6-7727185-G-A

Variant summary

Our verdict is Uncertain significance. Variant got 2 ACMG points: 2P and 0B. PM2

The NM_001718.6(BMP6):​c.230G>A​(p.Arg77Gln) variant causes a missense change. The variant allele was found at a frequency of 0.00000207 in 1,449,380 control chromosomes in the GnomAD database, with no homozygous occurrence. Variant has been reported in ClinVar as Uncertain significance (★).

• Frequency:
  • Genomes: not found (cov: 32)
  • Exomes 𝑓: 0.0000021 (0 hom.)
• Consequence: BMP6 NM_001718.6 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 4.04

Genes affected

BMP6 (HGNC:1073): (bone morphogenetic protein 6) 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 regulates a wide range of biological processes including iron homeostasis, fat and bone development, and ovulation. Differential expression of this gene may be associated with progression of breast and prostate cancer. Mutations in this gene may be associated with iron overload in human patients. [provided by RefSeq, Jul 2016]

ACMG classification

Verdict is Uncertain_significance. Variant got 2 ACMG points.

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

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	UniProt
BMP6	NM_001718.6	c.230G>A	p.Arg77Gln	missense_variant	1/7	ENST00000283147.7

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Appris	UniProt
BMP6	ENST00000283147.7	c.230G>A	p.Arg77Gln	missense_variant	1/7	1	NM_001718.6	P1

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome AF: 0.00000207 AC: 3 AN: 1449380 Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0 AN XY: 720196

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: 0.00000271

Gnomad4 OTH exome AF: 0.00

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Ambry Genetics

May 15, 2024

The c.230G>A (p.R77Q) alteration is located in exon 1 (coding exon 1) of the BMP6 gene. This alteration results from a G to A substitution at nucleotide position 230, causing the arginine (R) at amino acid position 77 to be replaced by a glutamine (Q). 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	Uncertain	0.37
BayesDel_addAF	Benign	-0.097	T
BayesDel_noAF	Benign	-0.38
CADD	Pathogenic	29
DANN	Pathogenic	1.0
DEOGEN2	Uncertain	0.63	D
Eigen	Uncertain	0.54
Eigen_PC	Uncertain	0.45
FATHMM_MKL	Uncertain	0.82	D
LIST_S2	Pathogenic	0.99	D
M_CAP	Pathogenic	0.90	D
MetaRNN	Uncertain	0.67	D
MetaSVM	Uncertain	-0.27	T
MutationAssessor	Benign	1.6	L
MutationTaster	Benign	0.97	D
PrimateAI	Pathogenic	0.89	D
PROVEAN	Uncertain	-2.6	D
REVEL	Benign	0.25
Sift	Benign	0.076	T
Sift4G	Uncertain	0.060	T
Polyphen		1.0	D
Vest4		0.46
MutPred		0.52		Gain of ubiquitination at K72 (P = 0.0199);
MVP		0.74
MPC		0.73
ClinPred		0.99	D
GERP RS		3.3
Varity_R		0.34
gMVP		0.43

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

No publications associated with this variant yet.

Other links and lift over

hg19: chr6-7727418;