Is CDC73 p.Val20Ala (c.59T>C) pathogenic?

CDC73 p.Val20Ala (c.59T>C) is classified Uncertain significance in CDC73 (ClinVar, Single submitter, 1 submitter; last evaluated 2024-05-22). AlphaMissense: likely benign (0.1534); Absent from gnomAD v4.1; Associated with parathyroid gland carcinoma.

What condition is associated with CDC73 p.Val20Ala (c.59T>C)?

CDC73 p.Val20Ala (c.59T>C) is associated with parathyroid gland carcinoma (ClinVar).

How common is CDC73 p.Val20Ala (c.59T>C) in the general population?

CDC73 p.Val20Ala (c.59T>C) is absent from gnomAD v4.1 (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.Val20Ala (c.59T>C)?

AlphaMissense predicts likely benign (score 0.1534) — an in-silico prediction, not a clinical call.

CDC73 p.Val20Ala

c.59T>C · VCV3637483

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1534 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

0/2 damaging

AlphaMissense, SaProt · REVEL no call

Conditions

parathyroid gland carcinoma

Computational evidence

Protein change
AlphaMissense	0.1534	likely benign
REVEL	0.323	indeterminate
SaProt	LLR -9.59	tolerated
⇒ AlphaMissense and SaProt both call this tolerated; REVEL makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 7.5	GERP 1.6, phastCons 1
Regional constraint	o/e 0.57	unconstrained · MANE · 16 kb · p 1.1e-08 · regional, not allelic
Overall
CADD	22.7	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

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: CDC73
Protein: p.Val20Ala
Coding: c.59T>C
MANE Select: NM_024529
Type: single nucleotide variant
Location: chr1:193122259 (GRCh38)
Gene constraint: LOEUF 0.42 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 73.94 · 21 PDB
Residue 20: a β-strand

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

For Parathyroid carcinoma (Orphanet):

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

Similar variants

CDC73 p.Val20Met Uncertain significance ★★ ⚠ same residue
CDC73 p.Val20= Likely benign ★★ same residue
CDC73 p.Val20Gly 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-val20ala (accessed [today's date]).

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