Genetic Variant BMP7:c.1146+151dupA (chr20-57173048-A-AT) – ACMG Classification: Likely_benign (-6 pts)

Variant summary

Our verdict is Likely benign. The variant received -6 ACMG points: 0P and 6B. BP6_ModerateBS2

The NM_001719.3(BMP7):c.1146+151dupA variant causes a intron change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.00243 in 741,768 control chromosomes in the GnomAD database, including 4 homozygotes. Variant has been reported in ClinVar as Likely benign (★).

Frequency

Genomes: 𝑓 0.00083 ( 1 hom., cov: 33)

Exomes 𝑓: 0.0028 ( 3 hom. )

Consequence

BMP7
NM_001719.3 intron

Scores

Not classified

Clinical Significance

Likely benign criteria provided, single submitter B:1

Conservation

PhyloP100: -0.309

Publications

0 publications found

Variant links:

Genes affected

BMP7 (HGNC:1074): (bone morphogenetic protein 7) 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, kidney and brown adipose tissue development. Additionally, this protein induces ectopic bone formation and may promote fracture healing in human patients. [provided by RefSeq, Jul 2016]

BMP7 Gene-Disease associations (from GenCC):

multiple congenital anomalies/dysmorphic syndrome
Inheritance: AD Classification: MODERATE Submitted by: Ambry Genetics
hypospadias
Inheritance: AD Classification: LIMITED Submitted by: Ambry Genetics

BMP7 links:

Genome browser will be placed here

ACMG classification

Classification was made for transcript

Our verdict: Likely_benign. The variant received -6 ACMG points.

BP6

Variant 20-57173048-A-AT is Benign according to our data. Variant chr20-57173048-A-AT is described in ClinVar as [Likely_benign]. Clinvar id is 1315742.Status of the report is criteria_provided_single_submitter, 1 stars.

BS2

High AC in GnomAd4 at 126 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	MANE	Protein	UniProt
BMP7	NM_001719.3 link	c.1146+151dupA		intron_variant	Intron 6 of 6	ENST00000395863.8	NP_001710.1	P18075A8K571

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	Exon rank	TSL	MANE	Protein	Appris	UniProt
BMP7	ENST00000395863.8 link	c.1146+151dupA		intron_variant	Intron 6 of 6	1	NM_001719.3	ENSP00000379204.3		P18075

Frequencies

GnomAD3 genomes

AF:

0.000832

AC:

126

AN:

151454

Hom.:

Cov.:

show subpopulations

Gnomad AFR

AF:

0.0000484

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:

0.00960

Gnomad MID

AF:

0.00

Gnomad NFE

AF:

0.000354

Gnomad OTH

AF:

0.00

GnomAD4 exome

AF:

0.00284

AC:

1679

AN:

590202

Hom.:

Cov.:

AF XY:

0.00272

AC XY:

849

AN XY:

312706

show subpopulations

⚠️ The allele balance in gnomAD version 4 Exomes is significantly skewed from the expected value of 0.5.

African (AFR)

AF:

0.00177

AC:

AN:

15792

American (AMR)

AF:

0.00131

AC:

AN:

31362

Ashkenazi Jewish (ASJ)

AF:

0.00133

AC:

AN:

18828

East Asian (EAS)

AF:

0.000356

AC:

AN:

30862

South Asian (SAS)

AF:

0.00127

AC:

AN:

59954

European-Finnish (FIN)

AF:

0.0102

AC:

451

AN:

44376

Middle Eastern (MID)

AF:

0.00178

AC:

AN:

2816

European-Non Finnish (NFE)

AF:

0.00277

AC:

985

AN:

355434

Other (OTH)

AF:

0.00185

AC:

AN:

30778

⚠️ The allele balance in gnomAD4 Exomes is highly skewed from 0.5 (p-value = 0.000000), which strongly suggests a high chance of mosaicism in these individuals.

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.304

Heterozygous variant carriers

203

407

610

814

1017

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

GnomAD4 genome

AF:

0.000831

AC:

126

AN:

151566

Hom.:

Cov.:

AF XY:

0.00113

AC XY:

AN XY:

74058

show subpopulations

African (AFR)

AF:

0.0000483

AC:

AN:

41398

American (AMR)

AF:

0.00

AC:

AN:

15220

Ashkenazi Jewish (ASJ)

AF:

0.00

AC:

AN:

3460

East Asian (EAS)

AF:

0.00

AC:

AN:

5158

South Asian (SAS)

AF:

0.00

AC:

AN:

4800

European-Finnish (FIN)

AF:

0.00960

AC:

100

AN:

10418

Middle Eastern (MID)

AF:

0.00

AC:

AN:

292

European-Non Finnish (NFE)

AF:

0.000354

AC:

AN:

67804

Other (OTH)

AF:

0.00

AC:

AN:

2108

Allele Balance Distribution

Red line indicates average allele balance

Average allele balance: 0.486

Heterozygous variant carriers

0.00

0.20

0.40

0.60

0.80

0.95

Allele balance

Alfa

AF:

0.00124

Hom.:

ClinVar

Significance: Likely benign

Submissions summary: Benign:1

Revision: criteria provided, single submitter

LINK: link

Submissions by phenotype

not provided

Benign:1

Nov 26, 2019

GeneDx

Significance:Likely benign

Review Status:criteria provided, single submitter

Collection Method:clinical testing

- -

Computational scores

Source: dbNSFP v4.3

Name

Calibrated prediction

Score

Prediction

PhyloP100

-0.31

Mutation Taster

=100/0

polymorphism

(source)

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

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20-57173048-A-AT

Variant summary

Frequency

Consequence

Scores

Clinical Significance

Conservation

Publications

ACMG classification

Transcripts

RefSeq

Ensembl

Frequencies

Age Distribution

Age Distribution

ClinVar

Submissions by phenotype

Computational scores

Splicing

Publications

Other links and lift over