Is CARD9 p.Arg29Cys (c.85C>T) pathogenic?

CARD9 p.Arg29Cys (c.85C>T) is classified Uncertain significance in CARD9 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-03-03). AlphaMissense: likely benign (0.2026); Very rare (popmax 0.00161%, nfe); Associated with predisposition to invasive fungal disease due to CARD9 deficiency.

What condition is associated with CARD9 p.Arg29Cys (c.85C>T)?

CARD9 p.Arg29Cys (c.85C>T) is associated with predisposition to invasive fungal disease due to CARD9 deficiency (ClinVar).

How common is CARD9 p.Arg29Cys (c.85C>T) in the general population?

CARD9 p.Arg29Cys (c.85C>T) is very rare (popmax 0.00161%, nfe) (gnomAD).

What do computational predictors say about CARD9 p.Arg29Cys (c.85C>T)?

AlphaMissense predicts likely benign (score 0.2026) — an in-silico prediction, not a clinical call.

CARD9 p.Arg29Cys

Q: How is Predisposition to invasive fungal disease due to CARD9 deficiency inherited?

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

c.85C>T · rs776666302 · VCV1985681

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.2026 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00161%, nfe)

Missense predictors

1/2 damaging

AlphaMissense, SaProt · REVEL no call

Conditions

predisposition to invasive fungal disease due to CARD9 deficiency

Computational evidence

Protein change
AlphaMissense	0.2026	likely benign
REVEL	0.376	indeterminate
SaProt	LLR -10.94	damaging
⇒ SaProt calls this damaging; AlphaMissense does not; REVEL makes no call.
Splicing
SpliceAI	<0.2	all four deltas below 0.2 · G>C here scores Δ0.39 · evaluated, not missing
Constraint at this position
Conservation	phyloP 7.1	GERP -1.4, phastCons 1
Regional constraint	o/e 1.03	unconstrained · MANE · 7,773 bp · p 0.34 · regional, not allelic
Overall
CADD	32.0	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 0.00161% European (non-Finnish) · 19/1,179,912 alleles

Filtering AF 0.00103% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00083%

Overall 0.00136% 22/1,612,668 alleles · very rare

Ancestry group	Frequency	1 in
Remaining individualsnot grpmax-eligible	0.0032%	31,230
European (non-Finnish)grpmax	0.00161%	62,101
South Asian	0.0011%	91,090

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: CARD9
Protein: p.Arg29Cys
Coding: c.85C>T
MANE Select: NM_052813
dbSNP: rs776666302
Type: single nucleotide variant
Location: chr9:136371994 (GRCh38)
Gene constraint: LOEUF 1.143 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 81.24 · 8 PDB
Residue 29: the card domain; a UniProt-annotated variant site (in imd103; reduced cytokine production in response to c.albicans infection; impaired nf-kappa-b transcriptional activity); an α-helix

Full CARD9 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

predisposition to invasive fungal disease due to CARD9 deficiency — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Predisposition to invasive fungal disease due to CARD9 deficiency (Orphanet):

Inheritance: Autosomal recessive

Similar variants

CARD9 p.Arg29His Uncertain significance ★★ ⚠ same residue
CARD9 p.Gln289Ter Pathogenic ★★ same condition
CARD9 p.Gln295Ter Pathogenic ★★ same condition
CARD9 c.-126C>A Uncertain significance ★★ same condition
CARD9 p.Ala109Val Uncertain significance ★★ ⚠ same condition
CARD9 p.Ala190Val Uncertain significance ★★ ⚠ same condition
CARD9 p.Ala198Thr Uncertain significance ★★ ⚠ same condition
CARD9 p.Ala199Val 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/card9-p-arg29cys (accessed [today's date]).

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