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LSS p.Pro405=

c.1215C>T · rs150832901 · VCV1633548

Likely benign Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.0228%, afr)

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 -16GERP -3.4
Overall
CADD0.195PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes
Grpmax group 0.0228% African / African-American · 17/74,722 alleles
Filtering AF 0.0144% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0119%
Overall 0.00901% 144/1,597,410 alleles · ultra-rare exomes 122/1,445,274 · genomes 22/152,136 · joint denominator
Ancestry group Frequency 1 in
African / African-Americangrpmax 0.0228% 4,395
European (non-Finnish) 0.0106% 9,462
Remaining individualsnot grpmax-eligible 0.00485% 20,621

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
LSS
Protein
p.Pro405=
Coding
c.1215C>T
MANE Select
NM_002340
dbSNP
rs150832901
Type
single nucleotide variant
Location
chr21:46209605 (GRCh38)
Gene constraint
LOEUF 1.05 · pLI <0.01 · ClinGen HI 0/3 (gnomAD)
Structure
AlphaFold pLDDT 98.05 · 2 PDB
Residue 405
a UniProt-annotated variant site (in apmr4; loss of protein expression); an α-helix
Full LSS 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/lss-p-pro405 (accessed [today's date]).

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