rs780148965
Variant summary
Our verdict is Likely benign. Variant got -4 ACMG points: 1P and 5B. PP2BP4BS2
The NM_004329.3(BMPR1A):āc.1276A>Cā(p.Ile426Leu) variant causes a missense change. The variant allele was found at a frequency of 0.00000889 in 1,461,884 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 (ā ā ). Another variant affecting the same amino acid position, but resulting in a different missense (i.e. I426V) has been classified as Uncertain significance.
Frequency
Consequence
NM_004329.3 missense
Scores
Clinical Significance
Conservation
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ACMG classification
Verdict is Likely_benign. Variant got -4 ACMG points.
Transcripts
RefSeq
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | MANE | UniProt |
---|---|---|---|---|---|---|---|
BMPR1A | NM_004329.3 | c.1276A>C | p.Ile426Leu | missense_variant | 11/13 | ENST00000372037.8 |
Ensembl
Gene | Transcript | HGVSc | HGVSp | Effect | #exon/exons | TSL | MANE | Appris | UniProt |
---|---|---|---|---|---|---|---|---|---|
BMPR1A | ENST00000372037.8 | c.1276A>C | p.Ile426Leu | missense_variant | 11/13 | 1 | NM_004329.3 | P1 |
Frequencies
GnomAD3 genomes Cov.: 32
GnomAD3 exomes AF: 0.00000398 AC: 1AN: 251496Hom.: 0 AF XY: 0.00 AC XY: 0AN XY: 135922
GnomAD4 exome AF: 0.00000889 AC: 13AN: 1461884Hom.: 0 Cov.: 31 AF XY: 0.0000110 AC XY: 8AN XY: 727242
GnomAD4 genome Cov.: 32
ClinVar
Submissions by phenotype
Polyposis syndrome, hereditary mixed, 2 Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Baylor Genetics | Mar 18, 2024 | - - |
Hereditary cancer-predisposing syndrome Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Ambry Genetics | Jul 14, 2022 | The p.I426L variant (also known as c.1276A>C), located in coding exon 9 of the BMPR1A gene, results from an A to C substitution at nucleotide position 1276. The isoleucine at codon 426 is replaced by leucine, an amino acid with highly similar properties. This alteration was observed in a cohort of 431 patients with wild-type PTEN who met at least the relaxed diagnostic criteria of the International Cowden Consortium (Lee YR et al. N Engl J Med, 2020 05;382:2103-2116). This amino acid position is well conserved in available vertebrate species. In addition, this alteration is predicted to be tolerated by in silico analysis. Since supporting evidence is limited at this time, the clinical significance of this alteration remains unclear. - |
Juvenile polyposis syndrome Uncertain:1
Uncertain significance, criteria provided, single submitter | clinical testing | Invitae | Sep 01, 2021 | This sequence change replaces isoleucine with leucine at codon 426 of the BMPR1A protein (p.Ile426Leu). The isoleucine residue is highly conserved and there is a small physicochemical difference between isoleucine and leucine. This variant is not present in population databases (ExAC no frequency). This variant has not been reported in the literature in individuals affected with BMPR1A-related conditions. Algorithms developed to predict the effect of missense changes on protein structure and function (SIFT, PolyPhen-2, Align-GVGD) all suggest that this variant is likely to be tolerated. 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. - |
Computational scores
Source:
Splicing
Find out detailed SpliceAI scores and Pangolin per-transcript scores at