Is CDC73 p.Tyr55= (c.165C>T) pathogenic?

CDC73 p.Tyr55= (c.165C>T) is classified Likely benign in CDC73 (ClinVar, Single submitter, 1 submitter; last evaluated 2022-10-18). Absent from gnomAD v4.1; Associated with parathyroid gland carcinoma.

What condition is associated with CDC73 p.Tyr55= (c.165C>T)?

CDC73 p.Tyr55= (c.165C>T) is associated with parathyroid gland carcinoma (ClinVar).

How common is CDC73 p.Tyr55= (c.165C>T) in the general population?

CDC73 p.Tyr55= (c.165C>T) 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.

CDC73 p.Tyr55=

c.165C>T · rs2103113938 · VCV1121213

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Absent

absent from gnomAD v4.1

Conditions

parathyroid gland carcinoma

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 0.12	GERP 0.17, phastCons 0.92
Overall
CADD	7.656	PHRED · no single calibrated threshold — expert panels disagree

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.Tyr55=
Coding: c.165C>T
MANE Select: NM_024529
dbSNP: rs2103113938
Type: single nucleotide variant
Location: chr1:193125145 (GRCh38)
Gene constraint: LOEUF 0.42 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 73.94 · 21 PDB
Residue 55: 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.Tyr55Cys Uncertain significance ★ ⚠ same residue
CDC73 p.Tyr55His Uncertain significance ★ ⚠ same residue
CDC73 p.Tyr55Ser 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-tyr55 (accessed [today's date]).

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