Is PARN p.Ile285Val (c.853A>G) pathogenic?

PARN p.Ile285Val (c.853A>G) is classified Uncertain significance in PARN (ClinVar, Multiple submitters, 3 submitters; last evaluated 2026-01-24). AlphaMissense: likely benign (0.0527); Ultra-rare (popmax 0.0849%, eas); Associated with dyskeratosis congenita, autosomal recessive 6.

What condition is associated with PARN p.Ile285Val (c.853A>G)?

PARN p.Ile285Val (c.853A>G) is associated with dyskeratosis congenita, autosomal recessive 6, pulmonary fibrosis and/or bone marrow failure, Telomere-related, 4 (ClinVar).

How common is PARN p.Ile285Val (c.853A>G) in the general population?

PARN p.Ile285Val (c.853A>G) is ultra-rare (popmax 0.0849%, eas) (gnomAD).

How is Dyskeratosis congenita inherited?

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

What do computational predictors say about PARN p.Ile285Val (c.853A>G)?

AlphaMissense predicts likely benign (score 0.0527) — an in-silico prediction, not a clinical call.

PARN p.Ile285Val

c.853A>G · rs376031010 · VCV639688

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 3 submitters

AlphaMissense

likely benign

0.0527 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0849%, eas)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

dyskeratosis congenita, autosomal recessive 6

Computational evidence

Protein change
AlphaMissense	0.0527	likely benign
REVEL	0.068	moderately benign-leaning
SaProt	LLR -5.32	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 2.7	GERP -0.95, phastCons 1
Regional constraint	o/e 1.03	unconstrained · MANE · 193 kb · p 0.44 · regional, not allelic
Overall
CADD	14.09	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

Grpmax group 0.0849% East Asian · 38/44,774 alleles

Filtering AF 0.0635% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0561%

Overall 0.00451% 72/1,596,068 alleles · ultra-rare exomes 58/1,444,004 · genomes 14/152,064 · joint denominator

Ancestry group	Frequency	1 in
East Asiangrpmax	0.0849%	1,178
Remaining individualsnot grpmax-eligible	0.0307%	3,261
South Asian	0.0155%	6,461
European (non-Finnish)	8.59e-05%	1,164,064

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: PARN
Protein: p.Ile285Val
Coding: c.853A>G
MANE Select: NM_002582
dbSNP: rs376031010
Type: single nucleotide variant
Location: chr16:14593366 (GRCh38)
Gene constraint: LOEUF 0.918 · pLI <0.01 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 81.60 · 3 PDB
Residue 285: a β-strand

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

Disease context

dyskeratosis congenita, autosomal recessive 6 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: pulmonary fibrosis and/or bone marrow failure, Telomere-related, 4

For Dyskeratosis congenita (Orphanet):

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

Similar variants

PARN p.Ile285Thr Uncertain significance ★ same residue
PARN c.1006-2A>G Pathogenic/Likely pathogenic ★★ same condition
PARN c.1405+1G>T Likely pathogenic ★★ same condition
PARN c.1481-1G>A Pathogenic/Likely pathogenic ★★ same condition
PARN c.178-1G>C Likely pathogenic ★★ same condition
PARN c.784-1G>A Likely pathogenic ★★ same condition
PARN c.962+2T>C Pathogenic/Likely pathogenic ★★ same condition
PARN p.Arg128Ter 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/parn-p-ile285val (accessed [today's date]).

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