20-6774951-T-G

Position:

• chr20-6774951-T-G

Variant summary

Our verdict is Benign. Variant got -12 ACMG points: 0P and 12B. BP4_Strong BA1

The NM_001200.4(BMP2):​c.347-3294T>G variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.436 in 151,978 control chromosomes in the GnomAD database, including 14,853 homozygotes. In-silico tool predicts a benign outcome for this variant. No clinical diagnostic laboratories have submitted clinical-significance assessments for this variant to ClinVar.

• Frequency: Genomes: 𝑓 0.44 (14853 hom., cov: 32)
• Consequence: BMP2 NM_001200.4 intron
• Clinical Significance: Not reported in ClinVar
• Conservation: PhyloP100: -0.0190

Genes affected

BMP2 (HGNC:1069): (bone morphogenetic protein 2) 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. Duplication of a regulatory region downstream of this gene causes a form of brachydactyly characterized by a malformed index finger and second toe in human patients. [provided by RefSeq, Jul 2016]

ACMG classification

Verdict is Benign. Variant got -12 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.88).
• BA1: GnomAd4 highest subpopulation (AFR) allele frequency at 95% confidence interval = 0.502 is higher than 0.05.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
BMP2	NM_001200.4	c.347-3294T>G		intron_variant		ENST00000378827.5	NP_001191.1

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
BMP2	ENST00000378827.5	c.347-3294T>G		intron_variant		1	NM_001200.4	ENSP00000368104.3

Frequencies

GnomAD3 genomes AF: 0.436 AC: 66141 AN: 151860 Hom.: 14844 Cov.: 32

Gnomad AFR AF: 0.509

Gnomad AMI AF: 0.366

Gnomad AMR AF: 0.459

Gnomad ASJ AF: 0.560

Gnomad EAS AF: 0.471

Gnomad SAS AF: 0.358

Gnomad FIN AF: 0.342

Gnomad MID AF: 0.509

Gnomad NFE AF: 0.397

Gnomad OTH AF: 0.451

We have no GnomAD4 exomes data on this position. Probably position not covered by the project.

GnomAD4 genome AF: 0.436 AC: 66187 AN: 151978 Hom.: 14853 Cov.: 32 AF XY: 0.431 AC XY: 32019 AN XY: 74308

Gnomad4 AFR AF: 0.508

Gnomad4 AMR AF: 0.460

Gnomad4 ASJ AF: 0.560

Gnomad4 EAS AF: 0.470

Gnomad4 SAS AF: 0.357

Gnomad4 FIN AF: 0.342

Gnomad4 NFE AF: 0.397

Gnomad4 OTH AF: 0.456

Alfa AF: 0.381 Hom.: 4489

Bravo AF: 0.451

Asia WGS AF: 0.468 AC: 1628 AN: 3478

ClinVar

Not reported in ClinVar

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.88
CADD	Benign	1.5
DANN	Benign	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

LitVar

Other links and lift over

dbSNP: rs235767; hg19: chr20-6755598; COSMIC: COSV66577140;