The BMPR2 c.1424C>A variant is a nonsense mutation in the kinase domain (exon 11 of 13). It is predicted to result in nonsense mediated mRNA decay, and therefore meets the criteria for PVS1. It is absent from gnomAD v2.1.1 (all samples), meeting PM2_supporting. There are three reports of this variant in the literature (PMIDs 16429395, 20534176 and 32581362). However, since PMID 16429395 summarized data from multiple countries, including the UK and French populations that were the subject of the later papers, it is not possible to determine if all three probands are independent. Thus conservatively, only counted 2 probands were counted (PS4_supporting). In summary, the variant meets the criteria to be classified as pathogenic for pulmonary arterial hypertension based on ACMG/AMP criteria applied, as specified by the ClinGen Pulmonary Hypertension VCEP: PVS1, PM2_supporting, PS4_supporting (VCEP specification version 1.1, 1/18/2024).