Is CFD p.Thr183Met (c.548C>T) pathogenic?

CFD p.Thr183Met (c.548C>T) is classified Uncertain significance in CFD (ClinVar, Single submitter, 1 submitter; last evaluated 2025-03-18). AlphaMissense: likely benign (0.183); Very rare (popmax 0.00128%, nfe).

How common is CFD p.Thr183Met (c.548C>T) in the general population?

CFD p.Thr183Met (c.548C>T) is very rare (popmax 0.00128%, nfe) (gnomAD).

What do computational predictors say about CFD p.Thr183Met (c.548C>T)?

AlphaMissense predicts likely benign (score 0.183) — an in-silico prediction, not a clinical call.

CFD p.Thr183Met

c.548C>T · VCV4001729

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.183 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00128%, nfe)

Missense predictors

0/3 damaging

AlphaMissense, REVEL, SaProt

Computational evidence

Protein change
AlphaMissense	0.183	likely benign
REVEL	0.143	moderately benign-leaning
SaProt	LLR -9.32	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 -7.1	GERP -3.7
Regional constraint	o/e 1.40	unconstrained · MANE · 3,545 bp · p 9.1e-15 · regional, not allelic
Overall
CADD	0.102	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 0.00128% European (non-Finnish) · 15/1,172,488 alleles

Filtering AF 0.000768% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.000609%

Overall 0.00252% 40/1,584,760 alleles · very rare

Ancestry group	Frequency	1 in
Finnishnot grpmax-eligible	0.0486%	2,058
Remaining individualsnot grpmax-eligible	0.00162%	61,672
European (non-Finnish)grpmax	0.00128%	78,166

Finnish shows a higher raw frequency than the grpmax group above it. gnomAD excludes bottlenecked groups — Finnish, Ashkenazi Jewish, Amish and “Remaining individuals” — from grpmax, because founder effects make their frequencies unrepresentative for filtering. The table is sorted by frequency, so an excluded group can sit above the grpmax row.

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: CFD
Protein: p.Thr183Met
Coding: c.548C>T
MANE Select: NM_001928
Type: single nucleotide variant
Location: chr19:861889 (GRCh38)
Gene constraint: LOEUF 1.948 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
Structure: AlphaFold pLDDT 91.19 · 40 PDB
Residue 183: a disulfide bond; the peptidase s1 domain; a turn

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

Similar variants

CFD p.Thr183Arg Uncertain significance ★ ⚠ same residue
CFD c.212+2T>G Likely pathogenic ★★ same type
CFD c.56-1G>C Likely pathogenic ★★ same type
CFD p.Tyr95Ter Pathogenic ★★ same type
ELANE p.Gly203Arg Pathogenic ★★ same type
ELANE p.Ser126Leu Pathogenic ★★ ⚠ same type
CFD p.Ala100Pro Uncertain significance ★★ ⚠ same type
CFD p.Ala129Thr 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/cfd-p-thr183met (accessed [today's date]).

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