Is COL2A1 p.Pro337Ser (c.1009C>T) pathogenic?

COL2A1 p.Pro337Ser (c.1009C>T) is classified Likely benign in COL2A1 (ClinVar, Single submitter, 1 submitter; last evaluated 2024-07-05). AlphaMissense: likely benign (0.0623); Very rare (popmax 0.00167%, amr).

How common is COL2A1 p.Pro337Ser (c.1009C>T) in the general population?

COL2A1 p.Pro337Ser (c.1009C>T) is very rare (popmax 0.00167%, amr) (gnomAD).

What do computational predictors say about COL2A1 p.Pro337Ser (c.1009C>T)?

AlphaMissense predicts likely benign (score 0.0623) — an in-silico prediction, not a clinical call.

COL2A1 p.Pro337Ser

c.1009C>T · rs766485093 · VCV1480219

Likely benign Single submitter

Classification

Likely benign

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

likely benign

0.0623 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00167%, amr)

Missense predictors

0/2 damaging

AlphaMissense, SaProt · REVEL indeterminate

Computational evidence

Protein change
AlphaMissense	0.0623	likely benign
REVEL	0.436	indeterminate
SaProt	LLR -8.45	tolerated
⇒ AlphaMissense and SaProt both call this tolerated; REVEL is indeterminate.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 8.6	GERP -0.61, phastCons 1
Regional constraint	o/e 0.62	unconstrained · MANE · 21 kb · p 2.4e-45 · regional, not allelic
Overall
CADD	22.9	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 0.00167% Admixed American · 1/60,018 alleles

Overall 0.000186% 3/1,614,170 alleles · very rare exomes 3/1,461,876 · genomes 0/152,294 · joint denominator

Ancestry group	Frequency	1 in
Admixed Americangrpmax	0.00167%	60,018
South Asian	0.0011%	91,084
European (non-Finnish)	8.47e-05%	1,180,018

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: COL2A1
Protein: p.Pro337Ser
Coding: c.1009C>T
MANE Select: NM_001844
dbSNP: rs766485093
Type: single nucleotide variant
Location: chr12:47992892 (GRCh38)
Gene constraint: LOEUF 0.183 · pLI 1.00 · ClinGen HI 3/3 (gnomAD)
Structure: AlphaFold pLDDT 53.56 · 11 PDB
Residue 337: the 'disordered' region; the 'triple-helical region' region

Full COL2A1 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Similar variants

COL2A1 p.Pro337= Likely benign ★★ same residue
COL2A1 c.1023+1G>A Pathogenic ★★ same type
COL2A1 c.1024-2A>C Pathogenic ★★ same type
COL2A1 c.1069-2A>G Pathogenic/Likely pathogenic ★★ same type
COL2A1 c.1221+1G>A Pathogenic ★★ same type
COL2A1 c.1222-2A>G Pathogenic ★★ same type
COL2A1 c.1365+1G>A Pathogenic/Likely pathogenic ★★ same type
COL2A1 c.1420-1G>A 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/col2a1-p-pro337ser (accessed [today's date]).

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