Is CEP164 p.Arg650Trp (c.1948C>T) pathogenic?

CEP164 p.Arg650Trp (c.1948C>T) is classified Conflicting classifications of pathogenicity in CEP164 (ClinVar, Conflicting submitters, 4 submitters; last evaluated 2025-09-24). AlphaMissense: likely benign (0.1304); Ultra-rare (popmax 0.0187%, afr); Associated with nephronophthisis 15.

What condition is associated with CEP164 p.Arg650Trp (c.1948C>T)?

CEP164 p.Arg650Trp (c.1948C>T) is associated with nephronophthisis 15 (ClinVar).

How common is CEP164 p.Arg650Trp (c.1948C>T) in the general population?

CEP164 p.Arg650Trp (c.1948C>T) is ultra-rare (popmax 0.0187%, afr) (gnomAD).

How is Senior-Loken syndrome inherited?

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

What do computational predictors say about CEP164 p.Arg650Trp (c.1948C>T)?

AlphaMissense predicts likely benign (score 0.1304) — an in-silico prediction, not a clinical call.

CEP164 p.Arg650Trp

c.1948C>T · rs145755063 · VCV1479949

Conflicting classifications of pathogenicity Conflicting submitters

Classification

Conflicting classifications of pathogenicity

ClinVar

Review

Conflicting submitters ★☆☆☆

ClinVar · 4 submitters

AlphaMissense

likely benign

0.1304 · ACMG-weighted

gnomAD v4.1

Rare

ultra-rare (popmax 0.0187%, afr)

Missense predictors

1/3 damaging

AlphaMissense, REVEL, SaProt

Conditions

nephronophthisis 15

Computational evidence

Protein change
AlphaMissense	0.1304	likely benign
REVEL	0.075	moderately benign-leaning
SaProt	LLR -10.50	damaging
⇒ SaProt calls this damaging; AlphaMissense and REVEL do not.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 1.7	GERP 1.4, phastCons 1
Regional constraint	o/e 0.97	unconstrained · MANE · 74 kb · p 0.19 · regional, not allelic
Overall
CADD	23.5	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

Grpmax group 0.0187% African / African-American · 14/74,836 alleles

Filtering AF 0.0112% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00905%

Overall 0.00446% 72/1,613,746 alleles · ultra-rare

Ancestry group	Frequency	1 in
African / African-Americangrpmax	0.0187%	5,345
Admixed American	0.00834%	11,990
European (non-Finnish)	0.00424%	23,600
Remaining individualsnot grpmax-eligible	0.0016%	62,482
Finnishnot grpmax-eligible	0.00156%	63,982
South Asian	0.0011%	91,064

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: CEP164
Protein: p.Arg650Trp
Coding: c.1948C>T
MANE Select: NM_014956
dbSNP: rs145755063
Type: single nucleotide variant
Location: chr11:117390790 (GRCh38)
Gene constraint: LOEUF 1.009 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 63.08 · 4 PDB

Full CEP164 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

nephronophthisis 15 — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Senior-Loken syndrome (Orphanet):

Inheritance: Autosomal recessive
Onset: Adolescent, Adult, Childhood, Infancy
Prevalence: 1-9 / 1 000 000 (Worldwide)

Similar variants

CEP164 p.Arg650Gln Uncertain significance ★ ⚠ same residue
CEP164 p.Arg650= Uncertain significance ★ same residue
CEP164 c.1234-2A>T Likely pathogenic ★★ same condition
CEP164 c.1724+1G>A Likely pathogenic ★★ same condition
CEP164 c.1934+1G>A Likely pathogenic ★★ same condition
CEP164 c.2361+1G>A Likely pathogenic ★★ same condition
CEP164 c.2493+1G>A Likely pathogenic ★★ same condition
CEP164 c.2914-1G>C Likely 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/cep164-p-arg650trp (accessed [today's date]).

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