Is F8 p.Pro165Ser (c.493C>T) pathogenic?

F8 p.Pro165Ser (c.493C>T) is classified Pathogenic/Likely pathogenic in F8 (ClinVar, Multiple submitters, 4 submitters; last evaluated 2024-09-30). AlphaMissense: likely pathogenic (0.6708); Very rare (popmax 0.00217%, amr); Associated with hemophilia A.

What condition is associated with F8 p.Pro165Ser (c.493C>T)?

F8 p.Pro165Ser (c.493C>T) is associated with hemophilia A (ClinVar).

How common is F8 p.Pro165Ser (c.493C>T) in the general population?

F8 p.Pro165Ser (c.493C>T) is very rare (popmax 0.00217%, amr) (gnomAD).

How is Hemophilia A inherited?

Typically X-linked recessive (Orphanet). A genetic counselor can assess individual risk for a family.

What do computational predictors say about F8 p.Pro165Ser (c.493C>T)?

AlphaMissense predicts likely pathogenic (score 0.6708) — an in-silico prediction, not a clinical call.

F8 p.Pro165Ser

c.493C>T · rs137852393 · VCV10176

Pathogenic/Likely pathogenic Multiple submitters

Classification

Pathogenic/Likely pathogenic

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 4 submitters

AlphaMissense

likely pathogenic

0.6708 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00217%, amr)

Missense predictors

3/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

hemophilia A

Computational evidence

Protein change
AlphaMissense	0.6708	likely pathogenic ✓ concordant with ClinVar
REVEL	0.951	strongly pathogenic-leaning
SaProt	LLR -10.84	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 11	GERP 1.7, phastCons 1
Regional constraint	o/e 0.56	unconstrained · MANE · 53 kb · p 1.5e-11 · regional, not allelic
Overall
CADD	25.4	PHRED · no single calibrated threshold — expert panels disagree

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

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00217% Admixed American · 1/46,073 alleles

Overall 8.25e-05% 1/1,211,458 alleles · very rare exomes 1/1,097,715 · genomes 0/113,743 · 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: F8
Protein: p.Pro165Ser
Coding: c.493C>T
MANE Select: NM_000132
dbSNP: rs137852393
Type: single nucleotide variant
Location: chrX:154993044 (GRCh38)
Structure: AlphaFold pLDDT 61.20 · 29 PDB
Residue 165: a UniProt-annotated variant site (in hema; severe); the f5/8 type a 1 domain; the plastocyanin-like 1 domain

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

Disease context

hemophilia A — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Hemophilia A (Orphanet):

Inheritance: X-linked recessive
Onset: Childhood, Infancy, Neonatal
Prevalence: 1-9 / 100 000 (Worldwide)

Similar variants

F8 p.Pro165fs Pathogenic ★ same residue
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

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-pro165ser (accessed [today's date]).

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