Is CD74 p.Arg108His (c.323G>A) pathogenic?

CD74 p.Arg108His (c.323G>A) is classified Uncertain significance in CD74 (ClinVar, Single submitter, 1 submitter; last evaluated 2024-11-25). AlphaMissense: likely benign (0.1404); Ultra-rare (popmax 0.097%, afr).

How common is CD74 p.Arg108His (c.323G>A) in the general population?

CD74 p.Arg108His (c.323G>A) is ultra-rare (popmax 0.097%, afr) (gnomAD).

What do computational predictors say about CD74 p.Arg108His (c.323G>A)?

AlphaMissense predicts likely benign (score 0.1404) — an in-silico prediction, not a clinical call.

CD74 p.Arg108His

c.323G>A · VCV3488175

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.1404 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.097%, afr)

Missense predictors

0/2 damaging

AlphaMissense, SaProt · REVEL no call

Computational evidence

Protein change
AlphaMissense	0.1404	likely benign
REVEL	0.3	indeterminate
SaProt	LLR -6.62	tolerated
⇒ AlphaMissense and SaProt both call this tolerated; REVEL makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 2.6	GERP 1.6, phastCons 0.99
Regional constraint	o/e 0.87	unconstrained · MANE · 11 kb · p 0.009 · regional, not allelic
Overall
CADD	24.0	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 0.097% African / African-American · 70/72,136 alleles

Filtering AF 0.0788% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0721%

Overall 0.00591% 92/1,555,948 alleles · ultra-rare

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.097%	1,031
Remaining individualsnot grpmax-eligible	0.0133%	7,493
East Asian	0.0068%	14,717
Admixed American	0.00665%	15,041
European (non-Finnish)	0.000691%	144,712

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: CD74
Protein: p.Arg108His
Coding: c.323G>A
MANE Select: NM_001025159
Type: single nucleotide variant
Location: chr5:150406936 (GRCh38)
Gene constraint: LOEUF 0.849 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 70.49 · 24 PDB
Residue 108: an α-helix

Full CD74 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

CD74 p.Arg108Gly Uncertain significance ★ ⚠ same residue
CD74 p.Ala117Thr Uncertain significance ★ ⚠ same type
CD74 p.Arg167Ser Uncertain significance ★ ⚠ same type
CD74 p.Arg35Gly Uncertain significance ★ ⚠ same type
CD74 p.Arg46His Uncertain significance ★ ⚠ same type
CD74 p.Arg77Trp Uncertain significance ★ ⚠ same type
CD74 p.Arg94His Uncertain significance ★ ⚠ same type
CD74 p.Cys9Ser 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/cd74-p-arg108his (accessed [today's date]).

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