Is GRHPR p.Asp86His (c.256G>C) pathogenic?

GRHPR p.Asp86His (c.256G>C) is classified Uncertain significance in GRHPR (ClinVar, Single submitter, 1 submitter; last evaluated 2024-03-31). AlphaMissense: likely pathogenic (0.8649); Very rare (popmax 0.00017%, nfe); Associated with primary hyperoxaluria type 2.

What condition is associated with GRHPR p.Asp86His (c.256G>C)?

GRHPR p.Asp86His (c.256G>C) is associated with primary hyperoxaluria type 2 (ClinVar).

How common is GRHPR p.Asp86His (c.256G>C) in the general population?

GRHPR p.Asp86His (c.256G>C) is very rare (popmax 0.00017%, nfe) (gnomAD).

How is Primary hyperoxaluria inherited?

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

What do computational predictors say about GRHPR p.Asp86His (c.256G>C)?

AlphaMissense predicts likely pathogenic (score 0.8649) — an in-silico prediction, not a clinical call.

GRHPR p.Asp86His

c.256G>C · VCV3597332

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.8649 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00017%, nfe)

Missense predictors

3/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

primary hyperoxaluria type 2

Computational evidence

Protein change
AlphaMissense	0.8649	likely pathogenic
REVEL	0.971	strongly pathogenic-leaning
SaProt	LLR -13.30	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, phastCons 1
Regional constraint	o/e 0.87	unconstrained · MANE · 14 kb · p 0.0084 · regional, not allelic
Overall
CADD	28.4	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean damaging — a triage signal, not a reclassification

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

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00017% European (non-Finnish) · 2/1,179,532 alleles

Filtering AF 2.8e-05% ClinGen BA1/BS1 input FAF95, joint · FAF99 1.1e-05%

Overall 0.000137% 2/1,461,326 alleles · very rare

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: GRHPR
Protein: p.Asp86His
Coding: c.256G>C
MANE Select: NM_012203
Type: single nucleotide variant
Location: chr9:37425963 (GRCh38)
Gene constraint: LOEUF 1.313 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
Structure: AlphaFold pLDDT 96.80 · 4 PDB

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

Disease context

primary hyperoxaluria type 2 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Primary hyperoxaluria (Orphanet):

Inheritance: Autosomal recessive
Onset: All ages
Prevalence: 1-9 / 1 000 000 (Germany)

Similar variants

GRHPR p.Asp86= Likely benign ★ same residue
GRHPR c.404+5G>A Likely pathogenic ★★ same condition
GRHPR c.493+2T>A Pathogenic/Likely pathogenic ★★ same condition
GRHPR c.494-2A>G Pathogenic/Likely pathogenic ★★ same condition
GRHPR c.734+1G>A Pathogenic/Likely pathogenic ★★ same condition
GRHPR c.735-1G>A Pathogenic/Likely pathogenic ★★ same condition
GRHPR c.83+1G>C Pathogenic/Likely pathogenic ★★ same condition
GRHPR c.84-2A>G 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/grhpr-p-asp86his (accessed [today's date]).

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