Is BLM p.Asn92fs (c.267_271delinsTTTT) pathogenic?

BLM p.Asn92fs (c.267271delinsTTTT) is classified Pathogenic in BLM (ClinVar, Single submitter, 1 submitter; last evaluated 2024-03-27). Associated with hereditary neoplastic syndrome.

What condition is associated with BLM p.Asn92fs (c.267_271delinsTTTT)?

BLM p.Asn92fs (c.267_271delinsTTTT) is associated with hereditary neoplastic syndrome (ClinVar).

BLM p.Asn92fs

c.267_271delinsTTTT · VCV3261016

Pathogenic Single submitter

Classification

Pathogenic

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

Consequence

frameshift

predicted LoF

gnomAD v4.1

Rare

Conditions

hereditary neoplastic syndrome

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Consequence	frameshift	predicted loss-of-function
NMD	predicted	premature termination codon in exon 3 of 22
Splicing
SpliceAI	—	not assessed · substitutions only
Constraint at this position
Conservation	phyloP 2.2	GERP -0.52, phastCons 0.42

Predicted loss-of-function is descriptive, not an applied PVS1 code.

Variant & gene context

Gene: BLM
Protein: p.Asn92fs
Coding: c.267_271delinsTTTT
MANE Select: NM_000057
Type: Indel
Location: chr15:90749535 (GRCh38)
Gene constraint: LOEUF 0.847 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
Structure: AlphaFold pLDDT 61.10 · 16 PDB

Full BLM gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

hereditary neoplastic syndrome — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

BLM p.Asn92Asp Conflicting classifications of pathogenicity ★ ⚠ same residue
BLM p.Asn92= Likely benign ★ same residue
BLM p.Asn1141fs Pathogenic/Likely pathogenic ★★ same condition
BLM p.Met1190fs Pathogenic/Likely pathogenic ★★ same condition
BLM c.799+4_799+5delinsCA Uncertain significance ★★ same condition
BLM p.Arg818Gly Uncertain significance ★★ same condition
BLM p.Phe561Asp Uncertain significance ★★ same condition
BLM p.Thr994Lys Uncertain significance ★★ same condition

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/blm-p-asn92fs (accessed [today's date]).

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