Is OCRL p.Ala328Val (c.983C>T) pathogenic?

OCRL p.Ala328Val (c.983C>T) is classified Uncertain significance in OCRL (ClinVar, Single submitter, 1 submitter; last evaluated 2025-02-16). AlphaMissense: likely benign (0.1126); No allele count reported in gnomAD v4.1 (AN 1,210,697); Associated with oculocerebrorenal syndrome.

What condition is associated with OCRL p.Ala328Val (c.983C>T)?

OCRL p.Ala328Val (c.983C>T) is associated with oculocerebrorenal syndrome (ClinVar).

How common is OCRL p.Ala328Val (c.983C>T) in the general population?

OCRL p.Ala328Val (c.983C>T) is no allele count reported in gnomAD v4.1 (AN 1,210,697) (gnomAD).

What do computational predictors say about OCRL p.Ala328Val (c.983C>T)?

AlphaMissense predicts likely benign (score 0.1126) — an in-silico prediction, not a clinical call.

OCRL p.Ala328Val

c.983C>T · VCV4745059

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1126 · ACMG-weighted

gnomAD v4.1

Not reported

no allele count reported in gnomAD v4.1 (AN 1,210,697)

Missense predictors

0/2 damaging

AlphaMissense, SaProt · REVEL indeterminate

Conditions

oculocerebrorenal syndrome

Computational evidence

Protein change
AlphaMissense	0.1126	likely benign
REVEL	0.331	indeterminate
SaProt	LLR -5.06	tolerated
⇒ AlphaMissense and SaProt both call this tolerated; REVEL is indeterminate.
Splicing
SpliceAI	<0.2	all four deltas below 0.2 · C>A here scores Δ0.33 · evaluated, not missing
Constraint at this position
Conservation	phyloP 1.1	GERP 0.43, phastCons 1
Regional constraint	o/e 0.54	unconstrained · MANE · 31 kb · p 4.7e-26 · regional, not allelic
Overall
CADD	17.29	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean tolerated — 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

No allele count reported in gnomAD v4.1 (AN 1,210,697). 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: OCRL
Protein: p.Ala328Val
Coding: c.983C>T
MANE Select: NM_000276
Type: single nucleotide variant
Location: chrX:129562427 (GRCh38)
Structure: AlphaFold pLDDT 82.91 · 5 PDB
Residue 328: the 5-ppase domain; a β-strand

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

Disease context

oculocerebrorenal syndrome — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

OCRL p.Ala328Thr Uncertain significance ★ ⚠ same residue
OCRL p.Ala328= Likely benign ★ same residue
OCRL c.1244+1G>A Pathogenic/Likely pathogenic ★★ same condition
OCRL c.1714-1G>A Pathogenic ★★ same condition
OCRL c.2256+1G>T Likely pathogenic ★★ same condition
OCRL c.560+1G>C Pathogenic/Likely pathogenic ★★ same condition
OCRL c.940-11G>A Pathogenic/Likely pathogenic ★★ same condition
OCRL p.Ala861Thr Pathogenic/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/ocrl-p-ala328val (accessed [today's date]).

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