What condition is associated with F8 p.Asp75Glu (c.225T>A)?

F8 p.Asp75Glu (c.225T>A) is associated with thrombophilia, X-linked, due to factor 8 defect, hemophilia A (ClinVar).

How common is F8 p.Asp75Glu (c.225T>A) in the general population?

F8 p.Asp75Glu (c.225T>A) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about F8 p.Asp75Glu (c.225T>A)?

AlphaMissense predicts likely pathogenic (score 0.7728) — an in-silico prediction, not a clinical call.

F8 p.Asp75Glu

Q: Is F8 p.Asp75Glu (c.225T>A) pathogenic?

F8 p.Asp75Glu (c.225T>A) is classified Uncertain significance in F8 (ClinVar, Single submitter, 1 submitter). AlphaMissense: likely pathogenic (0.7728); Absent from gnomAD v4.1; Associated with thrombophilia, X-linked, due to factor 8 defect.

c.225T>A · VCV3382991

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely pathogenic

0.7728 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

3/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

thrombophilia, X-linked, due to factor 8 defect

Computational evidence

Protein change
AlphaMissense	0.7728	likely pathogenic · top 10% in F8
REVEL	0.746	pathogenic-leaning
SaProt	LLR -11.47	damaging
⇒ AlphaMissense, REVEL and SaProt all call this damaging.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 5.2	GERP 0.28, phastCons 1
Regional constraint	o/e 0.56	unconstrained · MANE · 53 kb · p 1.5e-11 · regional, not allelic
Overall
CADD	22.4	PHRED · no single calibrated threshold — expert panels disagree

ClinVar classifies this uncertain; the computational predictors unanimously lean damaging — 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

Absent from gnomAD v4.1. Not observed in any sequenced alleles — a rarity signal (ACMG PM2-supporting), not evidence of pathogenicity on its own.

Variant & gene context

Gene: F8
Protein: p.Asp75Glu
Coding: c.225T>A
MANE Select: NM_000132
Type: single nucleotide variant
Location: chrX:154999519 (GRCh38)
Structure: AlphaFold pLDDT 61.20 · 29 PDB
Residue 75: a β-strand; the f5/8 type a 1 domain; the plastocyanin-like 1 domain; a UniProt-annotated variant site (in hema; moderate); a UniProt-annotated variant site (in); a UniProt-annotated variant site (in hema; moderate-severe)

Full F8 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

thrombophilia, X-linked, due to factor 8 defect — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: hemophilia A

Similar variants

F8 c.6429+2T>A Pathogenic ★★★ same condition
F8 p.Ala111Thr Likely pathogenic ★★★ same condition
F8 p.Ala2220Pro Pathogenic ★★★ same condition
F8 p.Ala415Asp Likely pathogenic ★★★ same condition
F8 p.Ala415Val Pathogenic ★★★ ⚠ same condition
F8 p.Arg1768His Pathogenic ★★★ ⚠ same condition
F8 p.Arg1800His Pathogenic ★★★ same condition
F8 p.Arg2016Trp 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/f8-p-asp75glu (accessed [today's date]).

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