MPL p.Leu289=
c.867G>A · VCV3366543
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Absent
absent from gnomAD v4.1
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 -0.98 | GERP -4 |
| Overall | ||
| CADD | 0.654 | 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
- MPL
- Protein
- p.Leu289=
- Coding
- c.867G>A
- MANE Select
- NM_005373
- Type
- single nucleotide variant
- Location
- chr1:43340400 (GRCh38)
- Gene constraint
- LOEUF 1.022 · pLI <0.01 (gnomAD)
- Structure
- AlphaFold pLDDT 73.44 · 1 PDB
- Residue 289
- a disulfide bond
Similar variants
- MPL c.1165+1G>C Likely pathogenic ★★ same type
- MPL c.1166-1G>C Likely pathogenic ★★ same type
- MPL c.1468+2T>C Pathogenic/Likely pathogenic ★★ same type
- MPL c.1469-2A>T Pathogenic/Likely pathogenic ★★ same type
- MPL c.1566-1G>A Likely pathogenic ★★ same type
- MPL c.1653+1G>C Likely pathogenic ★★ same type
- MPL c.79+2T>A Pathogenic/Likely pathogenic ★★ same type
- MPL c.853+1G>A Likely 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/mpl-p-leu289 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown