Is INTS1 p.Met991Val (c.2971A>G) pathogenic?

INTS1 p.Met991Val (c.2971A>G) is classified Uncertain significance in INTS1 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2024-09-02). AlphaMissense: likely benign (0.1045); Rare (popmax 0.129%, amr); Associated with Inborn genetic diseases.

What condition is associated with INTS1 p.Met991Val (c.2971A>G)?

INTS1 p.Met991Val (c.2971A>G) is associated with Inborn genetic diseases (ClinVar).

How common is INTS1 p.Met991Val (c.2971A>G) in the general population?

INTS1 p.Met991Val (c.2971A>G) is rare (popmax 0.129%, amr) (gnomAD).

What do computational predictors say about INTS1 p.Met991Val (c.2971A>G)?

AlphaMissense predicts likely benign (score 0.1045) — an in-silico prediction, not a clinical call.

INTS1 p.Met991Val

c.2971A>G · VCV3359628

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

AlphaMissense

likely benign

0.1045 · ACMG-weighted

gnomAD v4.1

Rare

rare (popmax 0.129%, amr)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.1045	likely benign
REVEL	0.059	moderately benign-leaning
SaProt	LLR -5.92	tolerated
⇒ AlphaMissense, REVEL and SaProt all call this tolerated.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 6	GERP 0.94, phastCons 1
Regional constraint	o/e 0.96	unconstrained · MANE · 21 kb · p 0.12 · regional, not allelic
Overall
CADD	22.5	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean tolerated — a triage signal, not a reclassification

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

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.129% Admixed American · 77/59,830 alleles

Filtering AF 0.105% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.097%

Overall 0.00546% 88/1,611,436 alleles · rare exomes 40/1,459,248 · genomes 48/152,188 · joint denominator

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.129%	777
Middle Eastern	0.0165%	6,070
South Asian	0.00551%	18,148
Remaining individualsnot grpmax-eligible	0.0016%	62,390
African / African-American	0.00133%	74,916
European (non-Finnish)	0.000254%	393,142

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: INTS1
Protein: p.Met991Val
Coding: c.2971A>G
MANE Select: NM_001080453
Type: single nucleotide variant
Location: chr7:1486630 (GRCh38)
Gene constraint: LOEUF 0.785 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 75.49 · 8 PDB
Residue 991: an α-helix

Full INTS1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Inborn genetic diseases — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Similar variants

INTS1 c.1283+5G>A Uncertain significance ★★ same condition
INTS1 c.2977-5C>T Uncertain significance ★★ same condition
INTS1 p.Ala1505Val Uncertain significance ★★ ⚠ same condition
INTS1 p.Ala1854Val Uncertain significance ★★ ⚠ same condition
INTS1 p.Ala2155Val Uncertain significance ★★ ⚠ same condition
INTS1 p.Ala2175Thr Uncertain significance ★★ ⚠ same condition
INTS1 p.Ala4Thr Uncertain significance ★★ ⚠ same condition
INTS1 p.Arg1096Cys 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/ints1-p-met991val (accessed [today's date]).

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