Is MACF1 p.Ile6641Val (c.19921A>G) pathogenic?

MACF1 p.Ile6641Val (c.19921A>G) is classified Conflicting classifications of pathogenicity in MACF1 (ClinVar, Conflicting submitters, 2 submitters; last evaluated 2024-10-22). AlphaMissense: likely benign (0.0578); Very rare (popmax 0.00223%, eas); Associated with Inborn genetic diseases.

What condition is associated with MACF1 p.Ile6641Val (c.19921A>G)?

MACF1 p.Ile6641Val (c.19921A>G) is associated with Inborn genetic diseases (ClinVar).

How common is MACF1 p.Ile6641Val (c.19921A>G) in the general population?

MACF1 p.Ile6641Val (c.19921A>G) is very rare (popmax 0.00223%, eas) (gnomAD).

What do computational predictors say about MACF1 p.Ile6641Val (c.19921A>G)?

AlphaMissense predicts likely benign (score 0.0578) — an in-silico prediction, not a clinical call.

MACF1 p.Ile6641Val

c.19921A>G · rs747821144 · VCV1980443

Conflicting classifications of pathogenicity Conflicting submitters

Classification

Conflicting classifications of pathogenicity

ClinVar

Review

Conflicting submitters ★☆☆☆

ClinVar · 2 submitters

AlphaMissense

likely benign

0.0578 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00223%, eas)

Missense predictors

0/2 damaging

AlphaMissense, REVEL · SaProt no call

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.0578	likely benign
REVEL	0.094	moderately benign-leaning
SaProt	—	not scored · why
⇒ AlphaMissense and REVEL both call this tolerated; SaProt makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 1.4	GERP -0.27, phastCons 0.3
Regional constraint	o/e 0.81	unconstrained · MANE · 18 kb · p 1.1e-08 · regional, not allelic
Overall
CADD	15.34	PHRED · no single calibrated threshold — expert panels disagree

AlphaMissense carries the ACMG weight for missense; REVEL is an independent agreement signal.

⚠ Isoform check: AlphaMissense numbered on a different transcript (AM I6540V vs ClinVar I6641V) — verify the residue.

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00223% East Asian · 1/44,894 alleles

Filtering AF 0.0013% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00108%

Overall 0.00161% 26/1,614,000 alleles · very rare exomes 25/1,461,858 · genomes 1/152,142 · joint denominator

Ancestry group	Frequency	1 in
East Asiangrpmax	0.00223%	44,894
South Asian	0.0022%	45,539
European (non-Finnish)	0.00195%	51,305

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: MACF1
Protein: p.Ile6641Val
Coding: c.19921A>G
MANE Select: NM_001394062
dbSNP: rs747821144
Type: single nucleotide variant
Location: chr1:39447851 (GRCh38)
Gene constraint: LOEUF 0.238 · pLI 1.00 (gnomAD)

Full MACF1 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

MACF1 p.Ile6641Leu Conflicting classifications of pathogenicity ★ ⚠ same residue
MACF1 p.Ala5598Ser Uncertain significance ★★ same condition
MACF1 p.Ala601Pro Uncertain significance ★★ ⚠ same condition
MACF1 p.Arg30Gln Uncertain significance ★★ same condition
MACF1 p.Arg3713Cys Uncertain significance ★★ ⚠ same condition
MACF1 p.Arg4674Cys Uncertain significance ★★ same condition
MACF1 p.Arg5490Gln Uncertain significance ★★ ⚠ same condition
MACF1 p.Arg5875Cys 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/macf1-p-ile6641val (accessed [today's date]).

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