Is CTRC p.Arg241Gln (c.722G>A) pathogenic?

CTRC p.Arg241Gln (c.722G>A) is classified Conflicting classifications of pathogenicity in CTRC (ClinVar, Conflicting submitters, 2 submitters; last evaluated 2025-01-27). AlphaMissense: likely benign (0.1542); Very rare (popmax 0.00267%, afr); Associated with hereditary chronic pancreatitis.

What condition is associated with CTRC p.Arg241Gln (c.722G>A)?

CTRC p.Arg241Gln (c.722G>A) is associated with hereditary chronic pancreatitis (ClinVar).

How common is CTRC p.Arg241Gln (c.722G>A) in the general population?

CTRC p.Arg241Gln (c.722G>A) is very rare (popmax 0.00267%, afr) (gnomAD).

What do computational predictors say about CTRC p.Arg241Gln (c.722G>A)?

AlphaMissense predicts likely benign (score 0.1542) — an in-silico prediction, not a clinical call.

CTRC p.Arg241Gln

Q: How is Autosomal dominant hereditary chronic pancreatitis inherited?

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

c.722G>A · rs777436696 · VCV1757808

Conflicting classifications of pathogenicity Conflicting submitters

Classification

Conflicting classifications of pathogenicity

ClinVar

Review

Conflicting submitters ★☆☆☆

ClinVar · 2 submitters

AlphaMissense

likely benign

0.1542 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00267%, afr)

Missense predictors

0/2 damaging

AlphaMissense, SaProt · REVEL no call

Conditions

hereditary chronic pancreatitis

Computational evidence

Protein change
AlphaMissense	0.1542	likely benign
REVEL	0.295	indeterminate
SaProt	LLR -7.65	tolerated
⇒ AlphaMissense and SaProt both call this tolerated; REVEL makes no call.
Splicing
SpliceAI	Δ0.38	acceptor gain · deltas
Constraint at this position
Conservation	phyloP -3.4	GERP -5.2
Regional constraint	o/e 0.90	unconstrained · MANE · 8,121 bp · p 0.049 · regional, not allelic
Overall
CADD	1.886	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 0.00267% African / African-American · 2/74,918 alleles

Filtering AF 0.00103% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.00083%

Overall 0.00167% 27/1,614,042 alleles · very rare

Ancestry group	Frequency	1 in
Remaining individualsnot grpmax-eligible	0.0048%	20,829
African / African-Americangrpmax	0.00267%	37,459
South Asian	0.0022%	45,530
Admixed American	0.00167%	60,004
European (non-Finnish)	0.00161%	62,108

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: CTRC
Protein: p.Arg241Gln
Coding: c.722G>A
MANE Select: NM_007272
dbSNP: rs777436696
Type: single nucleotide variant
Location: chr1:15445679 (GRCh38)
Gene constraint: LOEUF 1.147 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 94.03 · 1 PDB
Residue 241: a disulfide bond; the peptidase s1 domain

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.Arg241Trp Uncertain significance ★★ ⚠ same residue
CTRC p.Arg241Gly Uncertain significance ★ ⚠ same residue
CTRC p.Arg241= Likely benign ★ same residue
CTRC p.Arg241Leu Likely benign ★ 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

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-arg241gln (accessed [today's date]).

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