MAP1B p.Pro1383=
c.4149C>T · rs376974397 · VCV742966
Likely benign
Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.0878%, sas)
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 -8.6 | GERP -4.5 |
| Overall | ||
| CADD | 1.395 | PHRED · no single calibrated threshold — expert panels disagree |
Population frequency
gnomAD v4.1 · exomes + genomes
Grpmax group
0.0878%
South Asian · 80/91,078 alleles
Filtering AF
0.0722%
ClinGen BA1/BS1 input
FAF95, joint · FAF99 0.0666%
Overall
0.00669%
108/1,614,162 alleles · ultra-rare
exomes 96/1,461,888 · genomes 12/152,274 · joint denominator
| Ancestry group | Frequency | 1 in |
|---|---|---|
| South Asiangrpmax | 0.0878% | 1,138 |
| African / African-American | 0.012% | 8,336 |
| Remaining individualsnot grpmax-eligible | 0.0048% | 20,837 |
| Finnishnot grpmax-eligible | 0.00312% | 32,013 |
| European (non-Finnish) | 0.00119% | 84,288 |
Rarity supports pathogenicity (ACMG PM2); frequency above a disease-specific BA1/BS1 threshold argues against it. A variant frequent in one ancestry group can be near-absent in others, so a single global figure can mislead.
Variant & gene context
- Gene
- MAP1B
- Protein
- p.Pro1383=
- Coding
- c.4149C>T
- MANE Select
- NM_005909
- dbSNP
- rs376974397
- Type
- single nucleotide variant
- Location
- chr5:72197504 (GRCh38)
- Gene constraint
- LOEUF 0.105 · pLI 1.00 (gnomAD)
- Structure
- AlphaFold pLDDT 46.18
- Residue 1383
- a UniProt-annotated variant site (in pvnh9); a UniProt-annotated variant site (in pvnh9; no effect on protein expression); the 'disordered' region
Similar variants
- MAP1B p.Arg1664Ter Pathogenic/Likely pathogenic ★★ same type
- MAP1B p.Arg2140Ter Pathogenic ★★ same type
- MAP1B p.Arg303Ter Pathogenic/Likely pathogenic ★★ same type
- MAP1B p.Arg85Ter Pathogenic/Likely pathogenic ★★ same type
- MAP1B p.Arg999Ter Pathogenic/Likely pathogenic ★★ same type
- MAP1B p.Ala966Val Uncertain significance ★★ ⚠ same type
- MAP1B p.Arg1399Cys Uncertain significance ★★ ⚠ same type
- MAP1B p.Arg1948Trp Uncertain significance ★★ ⚠ 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/map1b-p-pro1383 (accessed [today's date]).
Preprint & method: sugi.bio/variant/method Machine-readable: this page as Markdown