chr14-53949883-C-T

Position:

• chr14-53949883-C-T

Variant summary

Our verdict is Benign. Variant got -9 ACMG points: 0P and 9B. BP4_Strong BS1_Supporting BS2

The NM_001202.6(BMP4):​c.*149G>A variant causes a 3 prime UTR change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.000849 in 644,256 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).

• Frequency:
  • Genomes: 𝑓 0.00023 (0 hom., cov: 26)
  • Exomes 𝑓: 0.0010 (0 hom.)
• Consequence: BMP4 NM_001202.6 3_prime_UTR
• Clinical Significance: Conflicting classifications of pathogenicity criteria provided, conflicting classifications U:3 B:1
• Conservation: PhyloP100: -1.04

Genes affected

BMP4 (HGNC:1071): (bone morphogenetic protein 4) 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 heart development and adipogenesis. Mutations in this gene are associated with orofacial cleft and microphthalmia in human patients. The encoded protein may also be involved in the pathology of multiple cardiovascular diseases and human cancers. [provided by RefSeq, Jul 2016]

ACMG classification

Verdict is Benign. Variant got -9 ACMG points.

• BP4: Computational evidence support a benign effect (BayesDel_noAF=-0.9).
• BS1: Variant frequency is greater than expected in population sas. gnomad4 allele frequency = 0.000231 (31/134382) while in subpopulation SAS AF= 0.00142 (5/3532). AF 95% confidence interval is 0.000557. There are 0 homozygotes in gnomad4. There are 16 alleles in male gnomad4 subpopulation. Median coverage is 26. This position pass quality control queck. Existence of Clinvar submissions makes me limit the strength of this signal to Supporting
• BS2: High AC in GnomAd4 at 31 AD gene.

Transcripts

RefSeq

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	MANE	Protein	UniProt
BMP4	NM_001202.6	c.*149G>A		3_prime_UTR_variant	4/4	ENST00000245451.9	NP_001193.2

Ensembl

Gene	Transcript	HGVSc	HGVSp	Effect	#exon/exons	TSL	MANE	Protein	Appris	UniProt
BMP4	ENST00000245451.9	c.*149G>A		3_prime_UTR_variant	4/4	1	NM_001202.6	ENSP00000245451	P1
BMP4	ENST00000558984.1	c.*149G>A		3_prime_UTR_variant	3/3	1		ENSP00000454134	P1
BMP4	ENST00000559087.5	c.*149G>A		3_prime_UTR_variant	4/4	1		ENSP00000453485	P1
BMP4	ENST00000417573.5	c.*149G>A		3_prime_UTR_variant	4/4	5		ENSP00000394165	P1

Frequencies

GnomAD3 genomes AF: 0.000223 AC: 30 AN: 134388 Hom.: 0 Cov.: 26

Gnomad AFR AF: 0.000476

Gnomad AMI AF: 0.00

Gnomad AMR AF: 0.000152

Gnomad ASJ AF: 0.00

Gnomad EAS AF: 0.000441

Gnomad SAS AF: 0.00141

Gnomad FIN AF: 0.000118

Gnomad MID AF: 0.00

Gnomad NFE AF: 0.0000463

Gnomad OTH AF: 0.000528

GnomAD4 exome AF: 0.00101 AC: 516 AN: 509874 Hom.: 0 Cov.: 8 AF XY: 0.00128 AC XY: 329 AN XY: 257828

Gnomad4 AFR exome AF: 0.000403

Gnomad4 AMR exome AF: 0.000933

Gnomad4 ASJ exome AF: 0.000645

Gnomad4 EAS exome AF: 0.000277

Gnomad4 SAS exome AF: 0.0104

Gnomad4 FIN exome AF: 0.000121

Gnomad4 NFE exome AF: 0.000393

Gnomad4 OTH exome AF: 0.00114

GnomAD4 genome AF: 0.000231 AC: 31 AN: 134382 Hom.: 0 Cov.: 26 AF XY: 0.000247 AC XY: 16 AN XY: 64684

Gnomad4 AFR AF: 0.000505

Gnomad4 AMR AF: 0.000152

Gnomad4 ASJ AF: 0.00

Gnomad4 EAS AF: 0.000443

Gnomad4 SAS AF: 0.00142

Gnomad4 FIN AF: 0.000118

Gnomad4 NFE AF: 0.0000463

Gnomad4 OTH AF: 0.000527

Alfa AF: 0.00262 Hom.: 1

ClinVar

Significance: Conflicting classifications of pathogenicity

Submissions summary: Uncertain:3 Benign:1

Revision: criteria provided, conflicting classifications

Submissions by phenotype

Syndromic Microphthalmia, Dominant Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

Orofacial cleft 11 Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jan 13, 2018

This variant was observed in the ICSL laboratory as part of a predisposition screen in an ostensibly healthy population. It had not been previously curated by ICSL or reported in the Human Gene Mutation Database (HGMD: prior to June 1st, 2018), and was therefore a candidate for classification through an automated scoring system. Utilizing variant allele frequency, disease prevalence and penetrance estimates, and inheritance mode, an automated score was calculated to assess if this variant is too frequent to cause the disease. Based on the score, this variant could not be ruled out of causing disease and therefore its association with disease required further investigation. A literature search was performed for the gene, cDNA change, and amino acid change (if applicable). No publications were found based on this search. This variant was therefore classified as a variant of unknown significance for this disease. -

Orofacial cleft Uncertain:1

Uncertain significance, criteria provided, single submitter

clinical testing

Illumina Laboratory Services, Illumina

Jun 14, 2016

- -

not provided Benign:1

Benign, criteria provided, single submitter

clinical testing

CeGaT Center for Human Genetics Tuebingen

Aug 01, 2022

BMP4: BS1, BS2 -

Computational scores

Source: dbNSFP v4.3

Name	Calibrated prediction	Score	Prediction
BayesDel_noAF	Benign	-0.90
CADD	Benign	0.40
DANN	Benign	0.37

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: rs74495140; hg19: chr14-54416601;