rs574229174
Variant summary
Our verdict is Uncertain significance. Variant got 1 ACMG points: 3P and 2B. PM2PP2BP4_Moderate
The NM_004329.3(BMPR1A):c.569A>G(p.Asn190Ser) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant allele was found at a frequency of 0.0000031 in 1,613,942 control chromosomes in the GnomAD database, with no homozygous occurrence. In-silico tool predicts a benign outcome for this variant. 16/21 in silico tools predict a benign outcome for this variant. Variant has been reported in ClinVar as Conflicting classifications of pathogenicity (no stars).
Frequency
Consequence
NM_004329.3 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Uncertain_significance. Variant got 1 ACMG points.
Transcripts
RefSeq
Ensembl
Frequencies
GnomAD3 genomes AF: 0.00000657 AC: 1AN: 152214Hom.: 0 Cov.: 32
GnomAD3 exomes AF: 0.00000796 AC: 2AN: 251366Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 135856
GnomAD4 exome AF: 0.00000274 AC: 4AN: 1461610Hom.: 0 Cov.: 31 AF XY: 0.00000275 AC XY: 2AN XY: 727106
GnomAD4 genome AF: 0.00000656 AC: 1AN: 152332Hom.: 0 Cov.: 32 AF XY: 0.00 AC XY: 0AN XY: 74494
ClinVar
Submissions by phenotype
not provided Uncertain:2
The BMPR1A c.569A>G (p.Asn190Ser) variant has not been reported in individuals with BMPR1A-related conditions in the published literature. The frequency of this variant in the general population, 0.000011 (3/282754 chromosomes (Genome Aggregation Database, http://gnomad.broadinstitute.org)), is uninformative in the assessment of its pathogenicity. Analysis of this variant using bioinformatics tools for the prediction of the effect of amino acid changes on protein structure and function yielded predictions that this variant is benign. Based on the available information, we are unable to determine the clinical significance of this variant. -
Not observed at significant frequency in large population cohorts (gnomAD); In silico analysis supports that this missense variant does not alter protein structure/function; Has not been previously published as pathogenic or benign to our knowledge; This variant is associated with the following publications: (PMID: 28569743) -
Juvenile polyposis syndrome Uncertain:2
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. -
This sequence change replaces asparagine, which is neutral and polar, with serine, which is neutral and polar, at codon 190 of the BMPR1A protein (p.Asn190Ser). This variant is present in population databases (rs574229174, gnomAD 0.003%). 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: 136051). Advanced modeling performed at Invitae incorporating data from internal and/or published experimental studies (Invitae) 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. -
Hereditary cancer-predisposing syndrome Uncertain:1Benign:1
This missense variant replaces asparagine with serine at codon 190 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 hereditary cancer in the literature. This variant has been identified in 3/282754 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 likely 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. -
not specified Uncertain:1
Variant summary: BMPR1A c.569A>G (p.Asn190Ser) results in a conservative amino acid change in the encoded protein sequence. Four of five in-silico tools predict a benign effect of the variant on protein function. The variant allele was found at a frequency of 8e-06 in 251366 control chromosomes. The available data on variant occurrences in the general population are insufficient to allow any conclusion about variant significance. c.569A>G has been reported in the literature in individuals affected with Pancreatic Cancer (example, Singh_2023). These report(s) do not provide unequivocal conclusions about association of the variant with BMPR1A-related conditions. To our knowledge, no experimental evidence demonstrating an impact on protein function has been reported. The following publication has been ascertained in the context of this evaluation (PMID: 37463056). ClinVar contains an entry for this variant (Variation ID: 136051). Based on the evidence outlined above, the variant was classified as uncertain significance. -
Polyposis syndrome, hereditary mixed, 2 Uncertain:1
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Generalized juvenile polyposis/juvenile polyposis coli Uncertain:1
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Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at