Is CTRC p.Cys202= (c.606C>T) pathogenic?

CTRC p.Cys202= (c.606C>T) is classified Conflicting classifications of pathogenicity in CTRC (ClinVar, Conflicting submitters, 3 submitters; last evaluated 2024-03-26). Ultra-rare (popmax 0.0187%, sas); Associated with hereditary chronic pancreatitis.

What condition is associated with CTRC p.Cys202= (c.606C>T)?

CTRC p.Cys202= (c.606C>T) is associated with hereditary chronic pancreatitis (ClinVar).

How common is CTRC p.Cys202= (c.606C>T) in the general population?

CTRC p.Cys202= (c.606C>T) is ultra-rare (popmax 0.0187%, sas) (gnomAD).

CTRC p.Cys202=

Q: How is Autosomal dominant hereditary chronic pancreatitis inherited?

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

c.606C>T · rs543348635 · VCV618056

Conflicting classifications of pathogenicity Conflicting submitters

Classification

Conflicting classifications of pathogenicity

ClinVar

Review

Conflicting submitters ★☆☆☆

ClinVar · 3 submitters

gnomAD v4.1

Rare

ultra-rare (popmax 0.0187%, sas)

Conditions

hereditary chronic pancreatitis

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 -7.9	GERP -5.2
Overall
CADD	9.414	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.0187% South Asian · 17/91,078 alleles

Filtering AF 0.0118% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00976%

Overall 0.00489% 79/1,614,180 alleles · ultra-rare exomes 76/1,461,886 · genomes 3/152,294 · joint denominator

Ancestry group	Frequency	1 in
South Asiangrpmax	0.0187%	5,358
European (non-Finnish)	0.005%	20,001
Remaining individualsnot grpmax-eligible	0.0048%	20,835

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: CTRC
Protein: p.Cys202=
Coding: c.606C>T
MANE Select: NM_007272
dbSNP: rs543348635
Type: single nucleotide variant
Location: chr1:15444718 (GRCh38)
Gene constraint: LOEUF 1.147 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 94.03 · 1 PDB
Residue 202: a disulfide bond; the peptidase s1 domain; a β-strand

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

Disease context

hereditary chronic pancreatitis — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Autosomal dominant hereditary chronic pancreatitis (Orphanet):

Inheritance: Autosomal dominant
Onset: Adolescent, Childhood
Prevalence: 1-9 / 1 000 000 (France)

Similar variants

CTRC p.Cys202Tyr Uncertain significance ★ ⚠ same residue
CTRC c.494-1G>C Pathogenic/Likely pathogenic ★★ same condition
CTRC p.Arg29Ter Pathogenic/Likely pathogenic ★★ same condition
CTRC p.Gln174Ter Pathogenic/Likely pathogenic ★★ same condition
CTRC c.356+1G>A Uncertain significance ★★ same condition
CTRC c.40+4A>G Uncertain significance ★★ same condition
CTRC c.40+6C>T Uncertain significance ★★ same condition
CTRC p.Ala12Val Uncertain significance ★★ ⚠ 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/ctrc-p-cys202 (accessed [today's date]).

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