APOB c.237+1G>A
Likely pathogenic
Single submitter
Classification
Likely pathogenic
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
Consequence
canonical splice-site (±1/±2)
predicted LoF
gnomAD v4.1
Absent
absent from gnomAD v4.1
Conditions
1
Cardiovascular phenotype
Computational evidence
| Protein change | ||
| Missense predictors do not apply to this variant type; conservation/SpliceAI carries the signal. | ||
| Consequence | canonical splice-site (±1/±2) | predicted loss-of-function in a haploinsufficient gene (ClinGen) |
|---|---|---|
| Splicing | ||
| Splice region | donor +1 | canonical splice dinucleotide (donor +1) · inside the BP7-excluded zone |
| SpliceAI | Δ0.99 | donor loss, 1 bp away · masked 0 · deltas |
| Pangolin | Δ0.87 | loss · gain 0.01 · agrees with SpliceAI · independent |
| Constraint at this position | ||
| Conservation | phyloP 7.6 | GERP 1.6, phastCons 1 |
| Non-coding constraint | Z 0.82 | 1 kb window · o/e 0.93 · regional · uncalibrated |
| Overall | ||
| CADD | 33.0 | PHRED · no single calibrated threshold — expert panels disagree |
Predicted loss-of-function is descriptive, not an applied PVS1 code.
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
- APOB
- Coding
- c.237+1G>A
- MANE Select
- NM_000384
- Type
- single nucleotide variant
- Location
- chr2:21042360 (GRCh38)
- Gene constraint
- LOEUF 0.537 · pLI <0.01 · ClinGen HI 3/3 (gnomAD)
Similar variants
- APOB p.Arg490Trp Pathogenic/Likely pathogenic ★★ same condition
- APOB c.1124+3A>G Uncertain significance ★★ same condition
- APOB c.11788+4A>G Uncertain significance ★★ same condition
- APOB c.12087+2T>C Uncertain significance ★★ same condition
- APOB p.Ala1320Thr Uncertain significance ★★ ⚠ same condition
- APOB p.Ala1695Val Uncertain significance ★★ ⚠ same condition
- APOB p.Ala1975Ser Uncertain significance ★★ ⚠ same condition
- APOB p.Ala3008Thr 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/apob-c-237-plus-1g-a (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown