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SETD1B p.Pro1401=

c.4203G>A · rs994444136 · VCV2643470

Likely benign Single submitter
Classification
Likely benign
ClinVar
Review
Single submitter ★☆☆☆
ClinVar · 1 submitter
gnomAD v4.1
Rare
ultra-rare (popmax 0.0241%, 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
ConservationphyloP -6.9GERP -3.1
Overall
CADD0.087PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes
Grpmax group 0.0241% South Asian · 19/78,936 alleles
Filtering AF 0.0157% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0131%
Overall 0.00278% 42/1,513,128 alleles · ultra-rare exomes 39/1,360,986 · genomes 3/152,142 · joint denominator
Ancestry group Frequency 1 in
South Asiangrpmax 0.0241% 4,155
Middle Eastern 0.0172% 5,818
Admixed American 0.0106% 9,470
Remaining individualsnot grpmax-eligible 0.00515% 19,416
European (non-Finnish) 0.00124% 80,365

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
SETD1B
Protein
p.Pro1401=
Coding
c.4203G>A
MANE Select
NM_001353345
dbSNP
rs994444136
Type
single nucleotide variant
Location
chr12:121822782 (GRCh38)
Gene constraint
LOEUF 0.109 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Structure
AlphaFold pLDDT 46.43 · 4 PDB
Residue 1401
a UniProt-annotated variant site (in iddseld); the 'disordered' region
Full SETD1B 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/setd1b-p-pro1401 (accessed [today's date]).

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