Is BMPR2 p.Arg266fs (c.796_799del) pathogenic?

BMPR2 p.Arg266fs (c.796799del) is classified Pathogenic in BMPR2 (ClinVar, Single submitter, 3 submitters; last evaluated 2023-02-16). Absent from gnomAD; Associated with pulmonary arterial hypertension.

What condition is associated with BMPR2 p.Arg266fs (c.796_799del)?

BMPR2 p.Arg266fs (c.796_799del) is associated with pulmonary arterial hypertension, pulmonary hypertension, primary, 1 (ClinVar).

How common is BMPR2 p.Arg266fs (c.796_799del) in the general population?

BMPR2 p.Arg266fs (c.796_799del) is absent from gnomAD (gnomAD).

BMPR2 p.Arg266fs

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.796_799del · rs1085307261 · VCV425826

Pathogenic Single submitter

Classification

Pathogenic

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 3 submitters

Consequence

frameshift

predicted LoF

gnomAD v4.1

Not reported

no gnomAD frequency available for this variant

Conditions

pulmonary arterial hypertension

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Consequence	frameshift	predicted loss-of-function in a haploinsufficient gene (ClinGen)
NMD	predicted	premature termination codon in exon 6 of 13
Splicing
SpliceAI	—	not assessed · substitutions only
Constraint at this position
Conservation	phyloP 0.26	GERP -3.2, phastCons 1

Predicted loss-of-function is descriptive, not an applied PVS1 code.

Population frequency

dbSNP / gnomAD

No gnomAD frequency available for this variant. This is missing data, not an absence: the variant may or may not be present in gnomAD. Rarity (ACMG PM2) and BA1/BS1 cannot be assessed for it.

Variant & gene context

Gene: BMPR2
Protein: p.Arg266fs
Coding: c.796_799del
MANE Select: NM_001204
dbSNP: rs1085307261
Type: Microsatellite
Location: chr2:202518993 (GRCh38)
Gene constraint: LOEUF 0.376 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 58.07 · 7 PDB
Residue 266: a UniProt-annotated variant site (in pph1; changed localization to the plasma membrane); the protein kinase domain; 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 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.Arg266Thr Uncertain significance ★★★ ⚠ same residue
BMPR2 p.Arg266Ser Uncertain significance ★ ⚠ same residue
BMPR2 c.1587-7_1587-4del Likely benign ★★★ same condition
BMPR2 p.Ser52_His53insTer Pathogenic/Likely pathogenic ★★ same condition
BMPR2 p.Glu661del Uncertain significance ★★ same condition
BMPR2 p.Arg459fs Pathogenic ★ same condition
BMPR2 p.Leu293fs Likely pathogenic ★ same condition
BMPR2 c.418+5_418+8del 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-arg266fs (accessed [today's date]).

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