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RAB39B p.Phe164=

c.492C>T · rs782453421 · VCV211977

Uncertain significance Single submitter
Classification
Uncertain significance
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.0113%, nfe)

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
ConservationphyloP 9.7GERP 1.9, phastCons 1
Overall
CADD12.47PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes
Grpmax group 0.0113% European (non-Finnish) · 101/895,121 alleles
Filtering AF 0.00944% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0088%
Overall 0.00843% 102/1,209,549 alleles · ultra-rare exomes 99/1,098,114 · genomes 3/111,435 · joint denominator
Ancestry group Frequency 1 in
European (non-Finnish)grpmax 0.0113% 8,863
Remaining individualsnot grpmax-eligible 0.0021% 47,584

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
RAB39B
Protein
p.Phe164=
Coding
c.492C>T
MANE Select
NM_171998
dbSNP
rs782453421
Type
single nucleotide variant
Location
chrX:155260953 (GRCh38)
Structure
AlphaFold pLDDT 88.67 · 1 PDB
Residue 164
an α-helix
Full RAB39B gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

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/rab39b-p-phe164 (accessed [today's date]).

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