Is PCLO p.Ala26Val (c.77C>T) pathogenic?

PCLO p.Ala26Val (c.77C>T) is classified Uncertain significance in PCLO (ClinVar, Single submitter, 1 submitter; last evaluated 2024-11-11). AlphaMissense: likely benign (0.2278); Very rare (popmax 0.000173%, nfe); Associated with Inborn genetic diseases.

What condition is associated with PCLO p.Ala26Val (c.77C>T)?

PCLO p.Ala26Val (c.77C>T) is associated with Inborn genetic diseases (ClinVar).

How common is PCLO p.Ala26Val (c.77C>T) in the general population?

PCLO p.Ala26Val (c.77C>T) is very rare (popmax 0.000173%, nfe) (gnomAD).

What do computational predictors say about PCLO p.Ala26Val (c.77C>T)?

AlphaMissense predicts likely benign (score 0.2278) — an in-silico prediction, not a clinical call.

PCLO p.Ala26Val

c.77C>T · VCV3415786

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.2278 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.000173%, nfe)

Missense predictors

0/2 damaging

AlphaMissense, REVEL · SaProt no call

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.2278	likely benign
REVEL	0.037	moderately benign-leaning
SaProt	—	not scored · why
⇒ AlphaMissense and REVEL both call this tolerated; SaProt makes no call.
Splicing
SpliceAI	<0.2	all four deltas below 0.2 · G>C here scores Δ0.20 · evaluated, not missing
Constraint at this position
Conservation	phyloP 6.2	GERP 1.7, phastCons 1
Regional constraint	o/e 1.05	unconstrained · MANE · 246 kb · p 0.0018 · regional, not allelic
Overall
CADD	20.8	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 is an independent agreement signal.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.000173% European (non-Finnish) · 2/1,153,552 alleles

Filtering AF 2.9e-05% ClinGen BA1/BS1 input FAF95, joint · FAF99 1.1e-05%

Overall 0.000128% 2/1,560,896 alleles · very rare exomes 2/1,408,592 · genomes 0/152,304 · joint denominator

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: PCLO
Protein: p.Ala26Val
Coding: c.77C>T
MANE Select: NM_033026
Type: single nucleotide variant
Location: chr7:83162516 (GRCh38)
Gene constraint: LOEUF 0.191 · pLI 1.00 (gnomAD)
Residue 26: the 'disordered' region

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

Disease context

Inborn genetic diseases — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

PCLO p.Ala26Gly Uncertain significance ★ ⚠ same residue
PCLO p.Ala1410Thr Uncertain significance ★★ ⚠ same condition
PCLO p.Ala2123Val Uncertain significance ★★ ⚠ same condition
PCLO p.Ala2259Gly Uncertain significance ★★ ⚠ same condition
PCLO p.Ala3066Ser Uncertain significance ★★ ⚠ same condition
PCLO p.Ala3613Ser Uncertain significance ★★ ⚠ same condition
PCLO p.Ala3662Thr Uncertain significance ★★ ⚠ same condition
PCLO p.Ala3695Val Uncertain significance ★★ ⚠ 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/pclo-p-ala26val (accessed [today's date]).

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