Is PDE6B p.Arg602= (c.1806C>T) pathogenic?

PDE6B p.Arg602= (c.1806C>T) is classified Benign/Likely benign in PDE6B (ClinVar, Multiple submitters, 3 submitters; last evaluated 2026-01-19). Very rare (popmax 0.00666%, amr).

How common is PDE6B p.Arg602= (c.1806C>T) in the general population?

PDE6B p.Arg602= (c.1806C>T) is very rare (popmax 0.00666%, amr) (gnomAD).

PDE6B p.Arg602=

c.1806C>T · rs140849790 · VCV1081011

Benign/Likely benign Multiple submitters

Classification

Benign/Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 3 submitters

gnomAD v4.1

Rare

very rare (popmax 0.00666%, amr)

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 -20	GERP -4.5
Overall
CADD	0.04	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.00666% Admixed American · 4/60,024 alleles

Filtering AF 0.00225% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00135%

Overall 0.000869% 14/1,611,136 alleles · very rare

Ancestry group	Frequency	1 in
Remaining individualsnot grpmax-eligible	0.00801%	12,485
Admixed Americangrpmax	0.00666%	15,006
African / African-American	0.00267%	37,506
East Asian	0.00223%	44,876
South Asian	0.0011%	91,040
European (non-Finnish)	8.49e-05%	1,178,088

Remaining individuals 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: PDE6B
Protein: p.Arg602=
Coding: c.1806C>T
MANE Select: NM_000283
dbSNP: rs140849790
Type: single nucleotide variant
Location: chr4:662592 (GRCh38)
Gene constraint: LOEUF 1.238 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 89.72
Residue 602: the pdease domain

Full PDE6B gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

PDE6B p.Arg602Cys Uncertain significance ★ ⚠ same residue
PDE6B p.Arg602Gly Uncertain significance ★ ⚠ same residue
PDE6B p.Arg602His Conflicting classifications of pathogenicity ★ ⚠ same residue
PDE6B p.Arg602Ser Uncertain significance ★ ⚠ same residue
PDE6B c.1059+2T>G Likely pathogenic ★★ same type
PDE6B c.1060-1G>T Pathogenic/Likely pathogenic ★★ same type
PDE6B c.1107+1G>T Likely pathogenic ★★ same type
PDE6B c.1107+3A>G Pathogenic/Likely pathogenic ★★ 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/pde6b-p-arg602 (accessed [today's date]).

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