6-55774126-G-A

Variant names:

• chr6-55774126-G-A
• NM_021073.4:c.950C>T

Variant summary

Our verdict is Uncertain significance. Variant got 3 ACMG points: 3P and 0B. PM2 PP3

The NM_021073.4(BMP5):​c.950C>T​(p.Ala317Val) variant causes a missense change involving the alteration of a conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. In-silico tool predicts a pathogenic outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: not found (cov: 32)
• Consequence: BMP5 NM_021073.4 missense
• Clinical Significance: Uncertain significance criteria provided, single submitter U:1
• Conservation: PhyloP100: 9.35

Genes affected

BMP5 (HGNC:1072): (bone morphogenetic protein 5) 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, which plays a role in bone and cartilage development. Polymorphisms in this gene may be associated with osteoarthritis in human patients. This gene is differentially regulated in multiple human cancers. This gene encodes distinct protein isoforms that may be similarly proteolytically processed. [provided by RefSeq, Jul 2016]

ACMG classification

Verdict is Uncertain_significance. Variant got 3 ACMG points.

• PM2: Very rare variant in population databases, with high coverage
• PP3: MetaRNN computational evidence supports a deleterious effect, 0.829

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BMP5	NM_021073.4	c.950C>T	p.Ala317Val	missense_variant	Exon 4 of 7	ENST00000370830.4	NP_066551.1
BMP5	NM_001329754.2	c.950C>T	p.Ala317Val	missense_variant	Exon 4 of 6		NP_001316683.1
BMP5	NM_001329756.2	c.950C>T	p.Ala317Val	missense_variant	Exon 4 of 5		NP_001316685.1
BMP5	XM_011514817.4	c.950C>T	p.Ala317Val	missense_variant	Exon 4 of 5		XP_011513119.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
BMP5	ENST00000370830.4	c.950C>T	p.Ala317Val	missense_variant	Exon 4 of 7	1	NM_021073.4	ENSP00000359866.3

Frequencies

GnomAD3 genomes Cov.: 32

GnomAD4 exome Cov.: 31

GnomAD4 genome Cov.: 32

ClinVar

Significance: Uncertain significance

Submissions summary: Uncertain:1

Revision: criteria provided, single submitter

Submissions by phenotype

not specified Uncertain:1

Feb 08, 2025

Ambry Genetics

Significance: Uncertain significance

Review Status: criteria provided, single submitter

Collection Method: clinical testing

The c.950C>T (p.A317V) alteration is located in exon 4 (coding exon 4) of the BMP5 gene. This alteration results from a C to T substitution at nucleotide position 950, causing the alanine (A) at amino acid position 317 to be replaced by a valine (V). 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	0.36
BayesDel_addAF	Pathogenic	0.18	D
BayesDel_noAF	Uncertain	0.020
CADD	Pathogenic	27
DANN	Pathogenic	1.0
DEOGEN2	Uncertain	0.71	D
Eigen	Uncertain	0.56
Eigen_PC	Pathogenic	0.67
FATHMM_MKL	Pathogenic	0.99	D
LIST_S2	Uncertain	0.90	D
M_CAP	Benign	0.025	D
MetaRNN	Pathogenic	0.83	D
MetaSVM	Benign	-0.56	T
MutationAssessor	Uncertain	2.3	M
PrimateAI	Uncertain	0.66	T
PROVEAN	Uncertain	-2.8	D
REVEL	Uncertain	0.46
Sift	Benign	0.20	T
Sift4G	Benign	0.13	T
Polyphen		0.94	P
Vest4		0.75
MutPred		0.30		Gain of methylation at K320 (P = 0.0846);
MVP		0.92
MPC		0.35
ClinPred		0.94	D
GERP RS		5.7
Varity_R		0.40
gMVP		0.52

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.010		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: chr6-55638924;