10-86912272-G-T
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Variant summary
Our verdict is Uncertain significance. Variant got 2 ACMG points: 3P and 1B. PM2PP2BP4
The NM_004329.3(BMPR1A):c.563G>T(p.Arg188Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000205 in 1,461,576 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 13/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Uncertain significance (★★).
Frequency
Genomes: not found (cov: 32)
Exomes 𝑓: 0.0000021 ( 0 hom. )
Consequence
BMPR1A
NM_004329.3 missense
NM_004329.3 missense
Scores
1
2
15
Clinical Significance
Conservation
PhyloP100: 4.72
Genes affected
BMPR1A (HGNC:1076): (bone morphogenetic protein receptor type 1A) The bone morphogenetic protein (BMP) receptors are a family of transmembrane serine/threonine kinases that include the type I receptors BMPR1A and BMPR1B and the type II receptor BMPR2. These receptors are also closely related to the activin receptors, ACVR1 and ACVR2. The ligands of these receptors are members of the TGF-beta superfamily. TGF-betas and activins transduce their signals through the formation of heteromeric complexes with 2 different types of serine (threonine) kinase receptors: type I receptors of about 50-55 kD and type II receptors of about 70-80 kD. Type II receptors bind ligands in the absence of type I receptors, but they require their respective type I receptors for signaling, whereas type I receptors require their respective type II receptors for ligand binding. [provided by RefSeq, Jul 2008]
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ACMG classification
Classification made for transcript
Verdict is Uncertain_significance. Variant got 2 ACMG points.
PM2
Very rare variant in population databases, with high coverage;
PP2
Missense variant in gene, where missense usually causes diseases (based on misZ statistic), BMPR1A. . Gene score misZ: 1.9176 (greater than the threshold 3.09). Trascript score misZ: 3.8989 (greater than threshold 3.09). The gene has 17 curated pathogenic missense variants (we use a threshold of 10). The gene has 19 curated benign missense variants. GenCC has associacion of the gene with polyposis syndrome, hereditary mixed, 2, generalized juvenile polyposis/juvenile polyposis coli, hereditary mixed polyposis syndrome, pulmonary arterial hypertension, juvenile polyposis syndrome.
BP4
Computational evidence support a benign effect (MetaRNN=0.2791581).
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes
GnomAD3 genomes
Cov.:
32
GnomAD4 exome AF: 0.00000205 AC: 3AN: 1461576Hom.: 0 Cov.: 31 AF XY: 0.00000138 AC XY: 1AN XY: 727094
GnomAD4 exome
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31
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727094
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GnomAD4 genome
GnomAD4 genome
Cov.:
32
ClinVar
Significance: Uncertain significance
Submissions summary: Uncertain:5
Revision: criteria provided, multiple submitters, no conflicts
LINK: link
Submissions by phenotype
Juvenile polyposis syndrome Uncertain:2
| Uncertain significance, criteria provided, single submitter | clinical testing | All of Us Research Program, National Institutes of Health | Aug 15, 2023 | This missense variant replaces arginine with leucine at codon 188 of the BMPR1A protein. Computational prediction suggests that this variant may not impact protein structure and function (internally defined REVEL score threshold <= 0.5, PMID: 27666373). To our knowledge, functional studies have not been reported for this variant. This variant has not been reported in individuals affected with BMPR1A-related disorders in the literature. This variant has not been identified in the general population by the Genome Aggregation Database (gnomAD). The available evidence is insufficient to determine the role of this variant in disease conclusively. Therefore, this variant is classified as a Variant of Uncertain Significance. - |
| Uncertain significance, criteria provided, single submitter | clinical testing | Labcorp Genetics (formerly Invitae), Labcorp | Jan 19, 2024 | This sequence change replaces arginine, which is basic and polar, with leucine, which is neutral and non-polar, at codon 188 of the BMPR1A protein (p.Arg188Leu). This variant is not present in population databases (gnomAD no frequency). This variant has not been reported in the literature in individuals affected with BMPR1A-related conditions. ClinVar contains an entry for this variant (Variation ID: 1042223). Advanced modeling of protein sequence and biophysical properties (such as structural, functional, and spatial information, amino acid conservation, physicochemical variation, residue mobility, and thermodynamic stability) performed at Invitae indicates that this missense variant is not expected to disrupt BMPR1A protein function with a negative predictive value of 80%. In summary, the available evidence is currently insufficient to determine the role of this variant in disease. Therefore, it has been classified as a Variant of Uncertain Significance. - |
not specified Uncertain:1
| Uncertain significance, criteria provided, single submitter | clinical testing | Women's Health and Genetics/Laboratory Corporation of America, LabCorp | Oct 20, 2021 | Variant summary: BMPR1A c.563G>T (p.Arg188Leu) results in a non-conservative amino acid change in the encoded protein sequence. Three of five in-silico tools predict a benign effect of the variant on protein function. The variant was absent in 251338 control chromosomes. The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. To our knowledge, no occurrence of c.563G>T in individuals affected with Juvenile Polyposis Syndrome and no experimental evidence demonstrating its impact on protein function have been reported. One clinical diagnostic laboratory has submitted clinical-significance assessments for this variant to ClinVar after 2014 without evidence for independent evaluation and classified the variant as uncertain significance. Based on the evidence outlined above, the variant was classified as uncertain significance. - |
Polyposis syndrome, hereditary mixed, 2 Uncertain:1
| Uncertain significance, criteria provided, single submitter | clinical testing | Baylor Genetics | Feb 06, 2024 | - - |
Hereditary cancer-predisposing syndrome Uncertain:1
| Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Jun 22, 2022 | The p.R188L variant (also known as c.563G>T), located in coding exon 6 of the BMPR1A gene, results from a G to T substitution at nucleotide position 563. The arginine at codon 188 is replaced by leucine, an amino acid with dissimilar properties. This amino acid position is not well conserved in available vertebrate species. In addition, the in silico prediction for this alteration is inconclusive. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. - |
Computational scores
Source:
Name
Calibrated prediction
Score
Prediction
AlphaMissense
Benign
BayesDel_addAF
Uncertain
T
BayesDel_noAF
Benign
CADD
Benign
DANN
Uncertain
DEOGEN2
Benign
T
Eigen
Benign
Eigen_PC
Benign
FATHMM_MKL
Pathogenic
D
M_CAP
Benign
T
MetaRNN
Benign
T
MetaSVM
Benign
T
MutationAssessor
Benign
L
PrimateAI
Benign
T
PROVEAN
Benign
N
REVEL
Benign
Sift
Benign
T
Sift4G
Benign
T
Polyphen
B
Vest4
MutPred
Loss of disorder (P = 0.0369);
MVP
MPC
ClinPred
D
GERP RS
Varity_R
gMVP
Splicing
Name
Calibrated prediction
Score
Prediction
SpliceAI score (max)
Details are displayed if max score is > 0.2
Find out detailed SpliceAI scores and Pangolin per-transcript scores at