Is AVPR2 p.Arg252Gln (c.755G>A) pathogenic?

AVPR2 p.Arg252Gln (c.755G>A) is classified Likely benign in AVPR2 (ClinVar, Single submitter, 1 submitter; last evaluated 2024-04-12). AlphaMissense: likely benign (0.0975); Ultra-rare (popmax 0.0101%, nfe); Associated with diabetes insipidus, nephrogenic, X-linked.

What condition is associated with AVPR2 p.Arg252Gln (c.755G>A)?

AVPR2 p.Arg252Gln (c.755G>A) is associated with diabetes insipidus, nephrogenic, X-linked, nephrogenic syndrome of inappropriate antidiuresis (ClinVar).

How common is AVPR2 p.Arg252Gln (c.755G>A) in the general population?

AVPR2 p.Arg252Gln (c.755G>A) is ultra-rare (popmax 0.0101%, nfe) (gnomAD).

How is Arginine vasopressin resistance inherited?

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

What do computational predictors say about AVPR2 p.Arg252Gln (c.755G>A)?

AlphaMissense predicts likely benign (score 0.0975) — an in-silico prediction, not a clinical call.

AVPR2 p.Arg252Gln

c.755G>A · VCV3598178

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0975 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0101%, nfe)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

diabetes insipidus, nephrogenic, X-linked

Computational evidence

Protein change
AlphaMissense	0.0975	likely benign
REVEL	0.104	moderately benign-leaning
SaProt	LLR -8.64	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 0.17	GERP -3.2, phastCons 0.008
Regional constraint	o/e 0.80	unconstrained · MANE · 1,579 bp · p 0.00022 · regional, not allelic
Overall
CADD	2.054	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

Grpmax group 0.0101% European (non-Finnish) · 90/895,301 alleles

Filtering AF 0.00832% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00766%

Overall 0.00809% 98/1,210,998 alleles · ultra-rare

Ancestry group	Frequency	1 in
Remaining individualsnot grpmax-eligible	0.0105%	9,522
European (non-Finnish)grpmax	0.0101%	9,948
African / African-American	0.00348%	28,773
Admixed American	0.00217%	45,981

Remaining individuals shows a higher raw frequency than the grpmax group above it. gnomAD excludes bottlenecked groups — Finnish, Ashkenazi Jewish, Amish and “Remaining individuals” — from grpmax, because founder effects make their frequencies unrepresentative for filtering. The table is sorted by frequency, so an excluded group can sit above the grpmax row.

Rarity supports pathogenicity (ACMG PM2); frequency above a disease-specific BA1/BS1 threshold argues against it. A variant frequent in one ancestry group can be near-absent in others, so a single global figure can mislead.

Variant & gene context

Gene: AVPR2
Protein: p.Arg252Gln
Coding: c.755G>A
MANE Select: NM_000054
Type: single nucleotide variant
Location: chrX:153906261 (GRCh38)
Structure: AlphaFold pLDDT 76.84 · 44 PDB
Residue 252: a UniProt-annotated variant site (in); the 'disordered' region

Full AVPR2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

diabetes insipidus, nephrogenic, X-linked — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: nephrogenic syndrome of inappropriate antidiuresis

For Arginine vasopressin resistance (Orphanet):

Inheritance: Autosomal dominant, Autosomal recessive, X-linked recessive
Onset: Infancy, Neonatal
Prevalence: 1-9 / 1 000 000 (Europe)

Similar variants

AVPR2 p.Arg252Trp Benign/Likely benign ★★ ⚠ same residue
AVPR2 p.Arg104Cys Pathogenic/Likely pathogenic ★★ ⚠ same condition
AVPR2 p.Arg113Trp Pathogenic ★★ same condition
AVPR2 p.Arg137Cys Pathogenic ★★ same condition
AVPR2 p.Arg137His Pathogenic ★★ same condition
AVPR2 p.Arg181Cys Pathogenic ★★ ⚠ same condition
AVPR2 p.Arg202Cys Pathogenic/Likely pathogenic ★★ ⚠ same condition
AVPR2 p.Arg337Ter 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/avpr2-p-arg252gln (accessed [today's date]).

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