Is SIN3A p.Gln8fs (c.23_24del) pathogenic?

SIN3A p.Gln8fs (c.2324del) is classified Pathogenic in SIN3A (ClinVar, Single submitter, 1 submitter; last evaluated 2021-06-24). Absent from gnomAD.

How common is SIN3A p.Gln8fs (c.23_24del) in the general population?

SIN3A p.Gln8fs (c.23_24del) is absent from gnomAD (gnomAD).

SIN3A p.Gln8fs

c.23_24del · rs2141571783 · VCV1329579

Pathogenic Single submitter

Classification

Pathogenic

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

Consequence

frameshift

predicted LoF

gnomAD v4.1

Not reported

no gnomAD frequency available for this variant

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 haploinsufficient gene (ClinGen)
NMD	predicted	premature termination codon in exon 2 of 21
Splicing
SpliceAI	—	not assessed · substitutions only
Constraint at this position
Conservation	phyloP 7.7	GERP 2.4, 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: SIN3A
Protein: p.Gln8fs
Coding: c.23_24del
MANE Select: NM_001145358
dbSNP: rs2141571783
Type: Deletion
Location: chr15:75430352 (GRCh38)
Gene constraint: LOEUF 0.14 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 69.67
Residue 8: the 'disordered' region

Full SIN3A gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

SIN3A p.Lys937fs Pathogenic ★★ same type
SIN3A p.Lys948fs Pathogenic/Likely pathogenic ★★ same type
SIN3A c.757-25_757-9del Uncertain significance ★★ same type
SIN3A p.His458_Gly459delinsArg Uncertain significance ★★ same type
SIN3A p.Ala455fs Pathogenic ★ same type
SIN3A p.Arg1134fs Pathogenic ★ same type
SIN3A p.Arg340fs Pathogenic ★ same type
SIN3A p.Asp845fs Pathogenic ★ same type

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/sin3a-p-gln8fs (accessed [today's date]).

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