Is AGPS p.Ser101fs (c.301dup) pathogenic?

AGPS p.Ser101fs (c.301dup) is classified Likely pathogenic in AGPS (ClinVar, Single submitter, 1 submitter; last evaluated 2023-03-05). Absent from gnomAD; Associated with rhizomelic chondrodysplasia punctata type 3.

What condition is associated with AGPS p.Ser101fs (c.301dup)?

AGPS p.Ser101fs (c.301dup) is associated with rhizomelic chondrodysplasia punctata type 3 (ClinVar).

How common is AGPS p.Ser101fs (c.301dup) in the general population?

AGPS p.Ser101fs (c.301dup) is absent from gnomAD (gnomAD).

How is Rhizomelic chondrodysplasia punctata inherited?

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

AGPS p.Ser101fs

c.301dup · rs2468525239 · VCV2674935

Likely pathogenic Single submitter

Classification

Likely pathogenic

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

Consequence

frameshift

predicted LoF

gnomAD v4.1

Not reported

no gnomAD frequency available for this variant

Conditions

rhizomelic chondrodysplasia punctata type 3

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Consequence	frameshift	predicted loss-of-function in a LoF-intolerant gene
NMD	predicted	premature termination codon in exon 2 of 20
Splicing
SpliceAI	—	not assessed · substitutions only
Constraint at this position
Conservation	phyloP 11	GERP 2.2, phastCons 1

Predicted loss-of-function is descriptive, not an applied PVS1 code.

Population frequency

dbSNP / gnomAD

No gnomAD frequency available for this variant. This is missing data, not an absence: the variant may or may not be present in gnomAD. Rarity (ACMG PM2) and BA1/BS1 cannot be assessed for it.

Variant & gene context

Gene: AGPS
Protein: p.Ser101fs
Coding: c.301dup
MANE Select: NM_003659
dbSNP: rs2468525239
Type: Duplication
Location: chr2:177420307 (GRCh38)
Gene constraint: LOEUF 0.408 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 89.27

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

Disease context

rhizomelic chondrodysplasia punctata type 3 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Rhizomelic chondrodysplasia punctata (Orphanet):

Inheritance: Autosomal recessive
Onset: Antenatal, Neonatal
Prevalence: 1-9 / 1 000 000 (Europe)

Similar variants

AGPS c.1546-84_1591dup Likely pathogenic ★ same condition
AGPS p.Tyr513fs Likely pathogenic ★ same condition
AGPS p.Tyr580fs Pathogenic ★ same condition
AGPS p.Ser101= Likely benign ★ same residue
AGPS p.Arg182Ter Pathogenic/Likely pathogenic ★★ same condition
AGPS p.Thr309Ile Likely pathogenic ★★ same condition
AGPS c.1855+6C>A Uncertain significance ★★ same condition
AGPS c.*118A>G Uncertain significance ★★ 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/agps-p-ser101fs (accessed [today's date]).

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