Is SAMD9 p.His26Pro (c.77A>C) pathogenic?

SAMD9 p.His26Pro (c.77A>C) is classified Uncertain significance in SAMD9 (ClinVar, Single submitter, 1 submitter; last evaluated 2025-09-10). AlphaMissense: ambiguous (0.4432); Absent from gnomAD v4.1; Associated with Inborn genetic diseases.

What condition is associated with SAMD9 p.His26Pro (c.77A>C)?

SAMD9 p.His26Pro (c.77A>C) is associated with Inborn genetic diseases (ClinVar).

How common is SAMD9 p.His26Pro (c.77A>C) in the general population?

SAMD9 p.His26Pro (c.77A>C) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about SAMD9 p.His26Pro (c.77A>C)?

AlphaMissense predicts ambiguous (score 0.4432) — an in-silico prediction, not a clinical call.

SAMD9 p.His26Pro

c.77A>C · VCV4159217

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

ambiguous

0.4432 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

1/2 damaging

REVEL, SaProt · AlphaMissense no call

Conditions

Inborn genetic diseases

Computational evidence

Protein change
AlphaMissense	0.4432	ambiguous
REVEL	0.15	moderately benign-leaning
SaProt	LLR -13.08	damaging
⇒ SaProt calls this damaging; REVEL does not; AlphaMissense makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 0.074	GERP 0.2, phastCons 0.01
Regional constraint	o/e 1.09	unconstrained · MANE · 1,176 bp · p 0.058 · regional, not allelic
Overall
CADD	15.08	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

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: SAMD9
Protein: p.His26Pro
Coding: c.77A>C
MANE Select: NM_017654
Type: single nucleotide variant
Location: chr7:93106021 (GRCh38)
Gene constraint: LOEUF 1.773 · pLI 0.03 · ClinGen HI 0/3 (gnomAD)
Structure: AlphaFold pLDDT 83.79 · 10 PDB
Residue 26: the sam domain

Full SAMD9 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

SAMD9 p.His26Arg Uncertain significance ★★ ⚠ same residue
SAMD9 p.His26Leu Uncertain significance ★ ⚠ same residue
SAMD9 p.His26Tyr Uncertain significance ★ ⚠ same residue
SAMD9 p.His26= Likely benign ★ same residue
SAMD9 p.Ala1057Val Uncertain significance ★★ ⚠ same condition
SAMD9 p.Ala1066Thr Uncertain significance ★★ ⚠ same condition
SAMD9 p.Ala1069Thr Uncertain significance ★★ ⚠ same condition
SAMD9 p.Ala1082Gly 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/samd9-p-his26pro (accessed [today's date]).

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