Is AR p.Ser178= (c.534C>T) pathogenic?

AR p.Ser178= (c.534C>T) is classified Likely benign in AR (ClinVar, Single submitter, 1 submitter; last evaluated 2023-11-24). Absent from gnomAD v4.1; Associated with Kennedy disease.

What condition is associated with AR p.Ser178= (c.534C>T)?

AR p.Ser178= (c.534C>T) is associated with Kennedy disease, androgen insensitivity syndrome (ClinVar).

How common is AR p.Ser178= (c.534C>T) in the general population?

AR p.Ser178= (c.534C>T) is absent from gnomAD v4.1 (gnomAD).

How is Kennedy disease inherited?

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

AR p.Ser178=

c.534C>T · rs913533972 · VCV2930006

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Absent

absent from gnomAD v4.1

Conditions

Kennedy disease

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 -2	GERP -3.1
Overall
CADD	2.897	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: AR
Protein: p.Ser178=
Coding: c.534C>T
MANE Select: NM_000044
dbSNP: rs913533972
Type: single nucleotide variant
Location: chrX:67545680 (GRCh38)
Structure: AlphaFold pLDDT 58.85 · 95 PDB
Residue 178: the 'interaction with znf318' region; the 'modulating' region

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

Disease context

Kennedy disease — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: androgen insensitivity syndrome

For Kennedy disease (Orphanet):

Inheritance: X-linked recessive
Onset: Adult
Prevalence: <1 / 1 000 000 (Italy)

Similar variants

AR c.1768+2T>C Pathogenic/Likely pathogenic ★★ same condition
AR c.1769-11T>A Pathogenic ★★ same condition
AR c.2450-6C>G Pathogenic ★★ same condition
AR p.Ala588Pro Pathogenic/Likely pathogenic ★★ same condition
AR p.Ala597Thr Pathogenic ★★ same condition
AR p.Ala688Val Pathogenic/Likely pathogenic ★★ same condition
AR p.Ala766Thr Pathogenic ★★ same condition
AR p.Ala871Val 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/ar-p-ser178 (accessed [today's date]).

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