Is CASR p.Phe667Ser (c.2000T>C) pathogenic?

CASR p.Phe667Ser (c.2000T>C) is classified Uncertain significance in CASR (ClinVar, Multiple submitters, 2 submitters; last evaluated 2022-05-17). AlphaMissense: ambiguous (0.3727); Absent from gnomAD v4.1; Associated with Nephrolithiasis/nephrocalcinosis.

What condition is associated with CASR p.Phe667Ser (c.2000T>C)?

CASR p.Phe667Ser (c.2000T>C) is associated with Nephrolithiasis/nephrocalcinosis, autosomal dominant hypocalcemia 1, familial hypocalciuric hypercalcemia (ClinVar).

How common is CASR p.Phe667Ser (c.2000T>C) in the general population?

CASR p.Phe667Ser (c.2000T>C) is absent from gnomAD v4.1 (gnomAD).

What do computational predictors say about CASR p.Phe667Ser (c.2000T>C)?

AlphaMissense predicts ambiguous (score 0.3727) — an in-silico prediction, not a clinical call.

CASR p.Phe667Ser

c.2000T>C · rs2074927361 · VCV1034636

Uncertain significance Multiple submitters

Classification

Uncertain significance

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

AlphaMissense

ambiguous

0.3727 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

1/2 damaging

REVEL, SaProt · AlphaMissense no call

Conditions

Nephrolithiasis/nephrocalcinosis

Computational evidence

Protein change
AlphaMissense	0.3727	ambiguous
REVEL	0.71	pathogenic-leaning
SaProt	LLR -9.53	tolerated
⇒ REVEL calls this damaging; SaProt does not; AlphaMissense makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 6.2	GERP 2.1, phastCons 1
Regional constraint	o/e 0.66	unconstrained · MANE · 660 bp · p 1.4e-08 · regional, not allelic
Overall
CADD	23.3	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: CASR
Protein: p.Phe667Ser
Coding: c.2000T>C
MANE Select: NM_000388
dbSNP: rs2074927361
Type: single nucleotide variant
Location: chr3:122283954 (GRCh38)
Gene constraint: LOEUF 0.469 · pLI 1.00 (gnomAD)
Structure: AlphaFold pLDDT 76.01 · 31 PDB
Residue 667: a UniProt-annotated variant site (in hhc1; impaired homodimerization; impaired cell membrane localization); an α-helix

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

Disease context

Nephrolithiasis/nephrocalcinosis — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

Also linked: autosomal dominant hypocalcemia 1 familial hypocalciuric hypercalcemia

Similar variants

CASR p.Phe667Leu Uncertain significance ★★ ⚠ same residue
CASR c.1378-1G>C Likely pathogenic ★★ same condition
CASR c.1608+1G>A Likely pathogenic ★★ same condition
CASR c.1609-2A>G Likely pathogenic ★★ same condition
CASR c.186-1G>T Pathogenic ★★ same condition
CASR c.493-2A>C Likely pathogenic ★★ same condition
CASR p.Ala581Val Likely pathogenic ★★ ⚠ same condition
CASR p.Ala835Asp Pathogenic/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/casr-p-phe667ser (accessed [today's date]).

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