Is CDC73 p.Arg484His (c.1451G>A) pathogenic?

CDC73 p.Arg484His (c.1451G>A) is classified Uncertain significance in CDC73 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2025-11-23). AlphaMissense: likely benign (0.1313); Very rare (popmax 0.00447%, eas); Associated with parathyroid gland carcinoma.

What condition is associated with CDC73 p.Arg484His (c.1451G>A)?

CDC73 p.Arg484His (c.1451G>A) is associated with parathyroid gland carcinoma, hereditary neoplastic syndrome (ClinVar).

How common is CDC73 p.Arg484His (c.1451G>A) in the general population?

CDC73 p.Arg484His (c.1451G>A) is very rare (popmax 0.00447%, eas) (gnomAD).

How is Parathyroid carcinoma inherited?

Typically Not applicable (Orphanet). A genetic counselor can assess individual risk for a family.

What do computational predictors say about CDC73 p.Arg484His (c.1451G>A)?

AlphaMissense predicts likely benign (score 0.1313) — an in-silico prediction, not a clinical call.

CDC73 p.Arg484His

c.1451G>A · rs774557338 · VCV642868

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

AlphaMissense

likely benign

0.1313 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00447%, eas)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

parathyroid gland carcinoma

Computational evidence

Protein change
AlphaMissense	0.1313	likely benign
REVEL	0.062	moderately benign-leaning
SaProt	LLR -9.77	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 9.9	GERP 1, phastCons 1
Regional constraint	o/e 0.57	unconstrained · MANE · 109 kb · p 8.5e-19 · regional, not allelic
Overall
CADD	25.4	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 0.00447% East Asian · 2/44,778 alleles

Filtering AF 0.00074% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000277%

Overall 0.000621% 10/1,609,540 alleles · very rare

Ancestry group	Frequency	1 in
East Asiangrpmax	0.00447%	22,389
African / African-American	0.00268%	37,340
South Asian	0.0022%	45,504
Admixed American	0.00167%	59,866
European (non-Finnish)	0.000255%	392,151

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: CDC73
Protein: p.Arg484His
Coding: c.1451G>A
MANE Select: NM_024529
dbSNP: rs774557338
Type: single nucleotide variant
Location: chr1:193249763 (GRCh38)
Gene constraint: LOEUF 0.42 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 73.94 · 21 PDB
Residue 484: the 'interaction with polr2a and paf1' region; an α-helix

Full CDC73 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

parathyroid gland carcinoma — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: hereditary neoplastic syndrome

For Parathyroid carcinoma (Orphanet):

Inheritance: Not applicable
Onset: Adult
Prevalence: <1 / 1 000 000 (Europe)

Similar variants

CDC73 p.Arg484Cys Uncertain significance ★★ ⚠ same residue
CDC73 p.Arg484= Likely benign ★★ same residue
CDC73 p.Arg484Pro Uncertain significance ★ same residue
CDC73 c.1030+2T>C Likely pathogenic ★★ same condition
CDC73 c.131+1G>A Pathogenic/Likely pathogenic ★★ same condition
CDC73 c.237+1G>A Pathogenic ★★ same condition
CDC73 c.423+1G>A Pathogenic ★★ same condition
CDC73 c.513-1G>A 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/cdc73-p-arg484his (accessed [today's date]).

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