Is BMPR2 p.Cys347Tyr (c.1040G>A) pathogenic?

BMPR2 p.Cys347Tyr (c.1040G>A) is classified Likely pathogenic in BMPR2 (ClinVar, Expert panel, 5 submitters; last evaluated 2024-05-01). AlphaMissense: likely pathogenic (0.9936); Absent from gnomAD v4.1; Associated with pulmonary arterial hypertension.

What condition is associated with BMPR2 p.Cys347Tyr (c.1040G>A)?

BMPR2 p.Cys347Tyr (c.1040G>A) is associated with pulmonary arterial hypertension, pulmonary venoocclusive disease 1, pulmonary hypertension, primary, 1 (ClinVar).

How common is BMPR2 p.Cys347Tyr (c.1040G>A) in the general population?

BMPR2 p.Cys347Tyr (c.1040G>A) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about BMPR2 p.Cys347Tyr (c.1040G>A)?

AlphaMissense predicts likely pathogenic (score 0.9936) — an in-silico prediction, not a clinical call.

BMPR2 p.Cys347Tyr

Q: How is Idiopathic/heritable pulmonary arterial hypertension inherited?

Typically Autosomal dominant, Autosomal recessive (Orphanet). A genetic counselor can assess individual risk for a family.

c.1040G>A · rs137852744 · VCV8800

Likely pathogenic Expert panel

Classification

Likely pathogenic

ClinVar

Review

Expert panel ★★★☆

ClinVar · 5 submitters

AlphaMissense

likely pathogenic

0.9936 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

3/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

pulmonary arterial hypertension

ClinGen expert panel — Pulmonary Hypertension VCEP

Likely Pathogenic for pulmonary arterial hypertension. Applied ACMG criteria (verbatim):

PM2_Supporting PS3_Supporting PM5_Supporting PS4 PP3

Curation rationale (ClinGen, verbatim)

The NM_001204.7(BMPR2) c.1040A>C variant is a missense variant predicted to cause substitution of cysteine by tyrosine at amino acid 347 (p.Cys347Tyr). This variant is absent from gnomAD v2.1.1 and v3.1.2 controls (PM2_supporting). The computational predictor REVEL gives a score of 0.939, which is above the thresholds predicting a damaging impact on BMPR2 function (PP3). A different change affecting the same amino acid (c.1039T>C p.(Cys347Arg); PMID: 26387786) has been reported as likely pathogenic (PM5_supporting). Cytoplasmatic retention assay demonstrates impaired signaling with subcellular localization in HeLa cells showing retainment in endoplasmatic reticulum, not significantly different to empty plasmid. However, this analysis lacks validation controls (PMID: 12045205; PS3_supporting). This variant has been reported in 5 probands meeting pulmonary arterial hypertension criteria (PS4 ; PMIDs 10973254; 26645265; 29631995; 31727138). In summary, this variant meets the criteria to be classified as likely pathogenic for pulmonary arterial hypertension based on the ACMG/AMP criteria applied, as specified by the ClinGen Pulmonary Hypertension VCEP: PM2_supporting, PS4, PP3, PM5_supporting, PS3_supporting (VCEP specifications version 1.1, 1/18/2024).

ClinGen Evidence Repository → · reported verbatim, not re-tallied by Sugi Variant.

Computational evidence

Protein change
AlphaMissense	0.9936	likely pathogenic ✓ concordant with ClinVar · top 6% in BMPR2
REVEL	0.939	strongly pathogenic-leaning
SaProt	LLR -14.92	damaging
⇒ AlphaMissense, REVEL and SaProt all call this damaging.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 12	GERP 2.7, phastCons 1
Regional constraint	o/e 0.78	unconstrained · MANE · 153 kb · p 2.6e-06 · regional, not allelic
Overall
CADD	31.0	PHRED · no single calibrated threshold — expert panels disagree

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

Population frequency

gnomAD v4.1 · exomes + genomes

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: BMPR2
Protein: p.Cys347Tyr
Coding: c.1040G>A
MANE Select: NM_001204
dbSNP: rs137852744
Type: single nucleotide variant
Location: chr2:202530866 (GRCh38)
Gene constraint: LOEUF 0.376 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 58.07 · 7 PDB
Residue 347: a UniProt-annotated variant site (in pph1; changed localization to the plasma membrane); the protein kinase domain; a UniProt-annotated variant site (in pph1; loss of localization to the plasma membrane; localized to the cytoplasm); a UniProt-annotated variant site (in pph1; likely pathogenic; does not localize to the cell surface); a β-strand

Full BMPR2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

pulmonary arterial hypertension — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: pulmonary venoocclusive disease 1 pulmonary hypertension, primary, 1

For Idiopathic/heritable pulmonary arterial hypertension (Orphanet):

Inheritance: Autosomal dominant, Autosomal recessive, Not applicable
Onset: All ages
Prevalence: 1-9 / 1 000 000 (United States)

Similar variants

BMPR2 p.Cys347Arg Pathogenic ★ same residue
BMPR2 c.1276+3A>G Likely pathogenic ★★★ same condition
BMPR2 c.1276+3A>T Likely pathogenic ★★★ same condition
BMPR2 c.1276+4A>G Likely pathogenic ★★★ same condition
BMPR2 c.1277-8A>G Pathogenic ★★★ same condition
BMPR2 c.1277-9A>G Pathogenic ★★★ same condition
BMPR2 c.1413+1G>A Pathogenic ★★★ same condition
BMPR2 c.247+1G>A Likely pathogenic ★★★ same condition

Built on 18 open, versioned datasets — ClinVar, gnomAD, AlphaMissense, REVEL, ClinGen & more — plus Sugi Variant's own cross-source analysis. Source data 2026-01–2026-10, ClinVar 2026-10. Full sources & versions →

Cite Sugi Variant

Gür T. Sugi Variant: A Deterministic Per-Variant Germline Reference from a Knowledge Graph for Humans and AI Agents. 2026. doi:10.5281/zenodo.21509445. This variant: https://sugi.bio/variant/bmpr2-p-cys347tyr (accessed [today's date]).

Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown