Is CDC73 p.Ala366= (c.1098A>G) pathogenic?

CDC73 p.Ala366= (c.1098A>G) is classified Likely benign in CDC73 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2025-08-24). Very rare (popmax 0.00111%, sas); Associated with hereditary neoplastic syndrome.

What condition is associated with CDC73 p.Ala366= (c.1098A>G)?

CDC73 p.Ala366= (c.1098A>G) is associated with hereditary neoplastic syndrome, parathyroid gland carcinoma (ClinVar).

How common is CDC73 p.Ala366= (c.1098A>G) in the general population?

CDC73 p.Ala366= (c.1098A>G) is very rare (popmax 0.00111%, sas) (gnomAD).

CDC73 p.Ala366=

c.1098A>G · rs775127570 · VCV1665472

Likely benign Multiple submitters

Classification

Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

gnomAD v4.1

Rare

very rare (popmax 0.00111%, sas)

Conditions

hereditary neoplastic syndrome

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
REVEL	0.043	moderately benign-leaning
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 0.2	GERP -4.5, phastCons 0.3
Overall
CADD	7.415	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00111% South Asian · 1/89,806 alleles

Overall 0.000137% 2/1,455,566 alleles · very rare

Ancestry group	Frequency	1 in
South Asiangrpmax	0.00111%	89,806
European (non-Finnish)	8.5e-05%	1,176,336

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.Ala366=
Coding: c.1098A>G
MANE Select: NM_024529
dbSNP: rs775127570
Type: single nucleotide variant
Location: chr1:193212421 (GRCh38)
Gene constraint: LOEUF 0.42 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 73.94 · 21 PDB
Residue 366: the 'interaction with polr2a and paf1' region

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

Disease context

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

Also linked: parathyroid gland carcinoma

Similar variants

CDC73 p.Ala366Thr 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
CDC73 p.Arg120Ter Pathogenic ★★ same condition
CDC73 p.Arg126Ter 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/cdc73-p-ala366 (accessed [today's date]).

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