Is UNC13D p.Arg610= (c.1830C>T) pathogenic?

UNC13D p.Arg610= (c.1830C>T) is classified Likely benign in UNC13D (ClinVar, Single submitter, 1 submitter; last evaluated 2026-01-19). Ultra-rare (popmax 0.016%, afr); Associated with familial hemophagocytic lymphohistiocytosis 3.

What condition is associated with UNC13D p.Arg610= (c.1830C>T)?

UNC13D p.Arg610= (c.1830C>T) is associated with familial hemophagocytic lymphohistiocytosis 3 (ClinVar).

How common is UNC13D p.Arg610= (c.1830C>T) in the general population?

UNC13D p.Arg610= (c.1830C>T) is ultra-rare (popmax 0.016%, afr) (gnomAD).

How is Familial hemophagocytic lymphohistiocytosis inherited?

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

UNC13D p.Arg610=

c.1830C>T · rs572194095 · VCV1160822

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

gnomAD v4.1

Rare

ultra-rare (popmax 0.016%, afr)

Conditions

familial hemophagocytic lymphohistiocytosis 3

Computational evidence

Protein change
Missense predictors do not apply to this variant type; conservation carries the signal.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP -10
Overall
CADD	0.174	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.016% African / African-American · 12/75,054 alleles

Filtering AF 0.0092% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.0072%

Overall 0.00155% 25/1,612,600 alleles · ultra-rare exomes 18/1,460,286 · genomes 7/152,314 · joint denominator

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.016%	6,254
Admixed American	0.00167%	59,978
Remaining individualsnot grpmax-eligible	0.0016%	62,432
South Asian	0.0011%	91,040
European (non-Finnish)	0.000848%	117,984

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: UNC13D
Protein: p.Arg610=
Coding: c.1830C>T
MANE Select: NM_199242
dbSNP: rs572194095
Type: single nucleotide variant
Location: chr17:75835427 (GRCh38)
Gene constraint: LOEUF 0.923 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 85.04 · 1 PDB
Residue 610: the mhd1 domain

Full UNC13D gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

familial hemophagocytic lymphohistiocytosis 3 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Familial hemophagocytic lymphohistiocytosis (Orphanet):

Inheritance: Autosomal recessive
Onset: Adolescent, Infancy
Prevalence: 1-9 / 100 000 (Sweden)

Similar variants

UNC13D p.Arg610His Uncertain significance ★★ ⚠ same residue
UNC13D p.Arg610Cys Uncertain significance ★ ⚠ same residue
UNC13D p.Arg610_Gln613del Pathogenic ★★ same residue
UNC13D c.1055+1G>A Pathogenic/Likely pathogenic ★★ same condition
UNC13D c.118-307G>A Pathogenic ★★ same condition
UNC13D c.118-308C>T Pathogenic/Likely pathogenic ★★ same condition
UNC13D c.1389+1G>A Pathogenic ★★ same condition
UNC13D c.1596+1G>C 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/unc13d-p-arg610 (accessed [today's date]).

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