Is STAT1 p.Thr635= (c.1905G>A) pathogenic?

STAT1 p.Thr635= (c.1905G>A) is classified Likely benign in STAT1 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-11-24). Very rare (popmax 0.00891%, eas); Associated with Mendelian susceptibility to mycobacterial diseases due to partial STAT1 deficiency.

What condition is associated with STAT1 p.Thr635= (c.1905G>A)?

STAT1 p.Thr635= (c.1905G>A) is associated with Mendelian susceptibility to mycobacterial diseases due to partial STAT1 deficiency, immunodeficiency 31B, autoimmune enteropathy and endocrinopathy - susceptibility to chronic infections syndrome (ClinVar).

How common is STAT1 p.Thr635= (c.1905G>A) in the general population?

STAT1 p.Thr635= (c.1905G>A) is very rare (popmax 0.00891%, eas) (gnomAD).

STAT1 p.Thr635=

Q: How is Mendelian susceptibility to mycobacterial diseases due to partial STAT1 deficiency inherited?

Typically Autosomal dominant (Orphanet). A genetic counselor can assess individual risk for a family.

c.1905G>A · rs764141480 · VCV2075772

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

very rare (popmax 0.00891%, eas)

Conditions

Mendelian susceptibility to mycobacterial diseases due to partial STAT1 deficiency

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	<0.2	no splice effect predicted · four deltas, not one · how we know
Constraint at this position
Conservation	phyloP -8.7	GERP -3.6
Overall
CADD	5.947	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00891% East Asian · 4/44,892 alleles

Filtering AF 0.00298% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0018%

Overall 0.000682% 11/1,613,968 alleles · very rare exomes 9/1,461,884 · genomes 2/152,084 · joint denominator

Ancestry group	Frequency	1 in
East Asiangrpmax	0.00891%	11,223
South Asian	0.0022%	45,537
Remaining individualsnot grpmax-eligible	0.0016%	62,490
Finnishnot grpmax-eligible	0.00156%	64,004
African / African-American	0.00134%	74,892
European (non-Finnish)	0.000169%	590,016

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: STAT1
Protein: p.Thr635=
Coding: c.1905G>A
MANE Select: NM_007315
dbSNP: rs764141480
Type: single nucleotide variant
Location: chr2:190976994 (GRCh38)
Gene constraint: LOEUF 0.271 · pLI 1.00 · ClinGen HI 0/3 (gnomAD)
Structure: AlphaFold pLDDT 87.78 · 10 PDB
Residue 635: the sh2 domain

Full STAT1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Mendelian susceptibility to mycobacterial diseases due to partial STAT1 deficiency — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: immunodeficiency 31B autoimmune enteropathy and endocrinopathy - susceptibility to chronic infections syndrome

For Mendelian susceptibility to mycobacterial diseases due to partial STAT1 deficiency (Orphanet):

Inheritance: Autosomal dominant
Onset: Childhood

Similar variants

STAT1 p.Thr635Met Uncertain significance ★ ⚠ same residue
STAT1 p.Ala267Val Pathogenic ★★ ⚠ same condition
STAT1 p.Arg274Gln Pathogenic ★★ ⚠ same condition
STAT1 p.Arg274Gly Pathogenic/Likely pathogenic ★★ same condition
STAT1 p.Arg274Trp Pathogenic ★★ same condition
STAT1 p.Asp171Asn Likely pathogenic ★★ ⚠ same condition
STAT1 p.Asp292Glu Likely pathogenic ★★ ⚠ same condition
STAT1 p.Cys324Arg Likely pathogenic ★★ 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/stat1-p-thr635 (accessed [today's date]).

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