Is INTS2 p.Leu877His (c.2630T>A) pathogenic?

INTS2 p.Leu877His (c.2630T>A) is classified Uncertain significance in INTS2 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-01-19). AlphaMissense: likely pathogenic (0.9575); Very rare (popmax 0.00017%, nfe).

How common is INTS2 p.Leu877His (c.2630T>A) in the general population?

INTS2 p.Leu877His (c.2630T>A) is very rare (popmax 0.00017%, nfe) (gnomAD).

What do computational predictors say about INTS2 p.Leu877His (c.2630T>A)?

AlphaMissense predicts likely pathogenic (score 0.9575) — an in-silico prediction, not a clinical call.

INTS2 p.Leu877His

c.2630T>A · VCV3860811

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.9575 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00017%, nfe)

Missense predictors

2/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.9575	likely pathogenic
REVEL	0.697	pathogenic-leaning
SaProt	LLR -9.87	tolerated
⇒ AlphaMissense and REVEL call this damaging; SaProt does not.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 11	GERP 2.2, phastCons 1
Regional constraint	o/e 0.84	unconstrained · MANE · 59 kb · p 6.2e-09 · regional, not allelic
Overall
CADD	26.1	PHRED · no single calibrated threshold — expert panels disagree

AlphaMissense carries the ACMG weight for missense; REVEL and SaProt are independent agreement signals.

⚠ Isoform check: AlphaMissense numbered on a different transcript (AM L885H vs ClinVar L877H) — verify the residue.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00017% European (non-Finnish) · 2/1,177,820 alleles

Filtering AF 2.8e-05% ClinGen BA1/BS1 input FAF95, joint · FAF99 1.1e-05%

Overall 0.000124% 2/1,611,166 alleles · very rare exomes 2/1,458,838 · genomes 0/152,328 · joint denominator

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: INTS2
Protein: p.Leu877His
Coding: c.2630T>A
MANE Select: NM_001351695
Type: single nucleotide variant
Location: chr17:61872413 (GRCh38)
Gene constraint: LOEUF 0.491 · pLI 0.98 (gnomAD)
Structure: AlphaFold pLDDT 78.90 · 8 PDB
Residue 885 UniProt numbering: an α-helix

Full INTS2 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

INTS2 c.-17A>G Uncertain significance ★ ⚠ same type
INTS2 c.-1A>G Uncertain significance ★ ⚠ same type
INTS2 c.-3A>G Uncertain significance ★ ⚠ same type
INTS2 p.Ala1125Ser Uncertain significance ★ ⚠ same type
INTS2 p.Ala379Val Uncertain significance ★ same type
INTS2 p.Ala400Asp Uncertain significance ★ ⚠ same type
INTS2 p.Ala57Val Uncertain significance ★ ⚠ same type
INTS2 p.Ala599Val 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/ints2-p-leu877his (accessed [today's date]).

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