rs587781522
Variant summary
Our verdict is Likely benign. The variant received -3 ACMG points: 1P and 4B. PP3BS2
The NM_004329.3(BMPR1A):āc.1215A>Cā(p.Lys405Asn) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000062 in 1,614,014 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a pathogenic outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. K405R) has been classified as Uncertain significance.
Frequency
Consequence
NM_004329.3 missense
Scores
Clinical Significance
Conservation
Publications
- generalized juvenile polyposis/juvenile polyposis coliInheritance: AD Classification: DEFINITIVE, STRONG, SUPPORTIVE Submitted by: Ambry Genetics, Orphanet, Genomics England PanelApp
- juvenile polyposis syndromeInheritance: AD Classification: DEFINITIVE, STRONG Submitted by: ClinGen, Labcorp Genetics (formerly Invitae), G2P
- polyposis syndrome, hereditary mixed, 2Inheritance: AD Classification: STRONG Submitted by: Genomics England PanelApp
- hereditary mixed polyposis syndromeInheritance: AD Classification: SUPPORTIVE Submitted by: Orphanet
- congenital heart defects, multiple typesInheritance: AD Classification: LIMITED Submitted by: Ambry Genetics
- pulmonary arterial hypertensionInheritance: Unknown Classification: NO_KNOWN Submitted by: ClinGen
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ACMG classification
Our verdict: Likely_benign. The variant received -3 ACMG points.
Transcripts
RefSeq
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | MANE | Protein | UniProt |
|---|---|---|---|---|---|---|---|---|
| BMPR1A | NM_004329.3 | c.1215A>C | p.Lys405Asn | missense_variant | Exon 11 of 13 | ENST00000372037.8 | NP_004320.2 |
Ensembl
| Gene | Transcript | HGVSc | HGVSp | Effect | Exon rank | TSL | MANE | Protein | Appris | UniProt |
|---|---|---|---|---|---|---|---|---|---|---|
| BMPR1A | ENST00000372037.8 | c.1215A>C | p.Lys405Asn | missense_variant | Exon 11 of 13 | 1 | NM_004329.3 | ENSP00000361107.2 |
Frequencies
GnomAD3 genomes AF: 0.00000657 AC: 1AN: 152172Hom.: 0 Cov.: 32 show subpopulations
GnomAD2 exomes AF: 0.0000119 AC: 3AN: 251454 AF XY: 0.0000147 show subpopulations
GnomAD4 exome AF: 0.00000616 AC: 9AN: 1461842Hom.: 0 Cov.: 31 AF XY: 0.00000413 AC XY: 3AN XY: 727226 show subpopulations
Age Distribution
GnomAD4 genome AF: 0.00000657 AC: 1AN: 152172Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 74348 show subpopulations
ClinVar
Submissions by phenotype
Juvenile polyposis syndrome Uncertain:4
This sequence change replaces lysine, which is basic and polar, with asparagine, which is neutral and polar, at codon 405 of the BMPR1A protein (p.Lys405Asn). This variant is present in population databases (rs587781522, gnomAD 0.002%). 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: 141138). Invitae Evidence Modeling incorporating data from in vitro experimental studies (internal data) indicates that this missense variant is not expected to disrupt BMPR1A function with a negative predictive value of 95%. 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. -
This submission and the accompanying classification are no longer maintained by the submitter. For more information on current observations and classification, please contact variantquestions@myriad.com. -
This missense variant replaces lysine with asparagine at codon 405 of the BMPR1A protein. Computational prediction is inconclusive regarding the impact of this variant on protein structure and function (internally defined REVEL score threshold 0.5 < inconclusive < 0.7, 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 been observed in a cohort of individuals undergoing hereditary cancer genetic testing (PMID: 31159747). This variant has been identified in 3/251454 chromosomes 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. -
This variant is classified as a variant of uncertain significance as there is insufficient evidence to determine its impact on protein function and/or cancer risk. -
not provided Uncertain:3
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Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant has a deleterious effect on protein structure/function; Observed in individuals undergoing hereditary cancer panel testing (PMID: 31159747); This variant is associated with the following publications: (PMID: 31159747) -
Variant summary: The BMPR1A c.1215A>C (p.Lys405Asn) variant involves the alteration of a non-conserved nucleotide. 5/5 in silico tools predict a damaging outcome for this variant. This variant is absent in 121410 control chromosomes. Multiple clinical diagnostic laboratories/reputable databases classified this variant as uncertain significance. The variant of interest has not, to our knowledge, been reported in affected individuals via publications nor evaluated for functional impact by in vivo/vitro studies. Because of the absence of clinical information and the lack of functional studies, the variant is classified as a variant of uncertain significance (VUS) until additional information becomes available. -
Hereditary cancer-predisposing syndrome Uncertain:2Benign:1
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This missense variant replaces lysine with asparagine at codon 405 of the BMPR1A protein. Computational prediction is inconclusive regarding the impact of this variant on protein structure and function (internally defined REVEL score threshold 0.5 < inconclusive < 0.7, 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 been observed in a cohort of individuals undergoing hereditary cancer genetic testing (PMID: 31159747). This variant has been identified in 3/251454 chromosomes 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. -
This alteration is classified as benign based on a combination of the following: seen in unaffected individuals, population frequency, intact protein function, lack of segregation with disease, co-occurrence, RNA analysis, in silico models, amino acid conservation, lack of disease association in case-control studies, and/or the mechanism of disease or impacted region is inconsistent with a known cause of pathogenicity. -
Pulmonary arterial hypertension Uncertain:1
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not specified Uncertain:1
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Polyposis syndrome, hereditary mixed, 2 Uncertain:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at