Is BBS10 p.Pro31Ser (c.91C>T) pathogenic?

BBS10 p.Pro31Ser (c.91C>T) is classified Uncertain significance in BBS10 (ClinVar, Single submitter, 1 submitter; last evaluated 2022-03-19). AlphaMissense: ambiguous (0.5014); Very rare (popmax 0.00223%, eas); Associated with Bardet-Biedl syndrome.

What condition is associated with BBS10 p.Pro31Ser (c.91C>T)?

BBS10 p.Pro31Ser (c.91C>T) is associated with Bardet-Biedl syndrome (ClinVar).

How common is BBS10 p.Pro31Ser (c.91C>T) in the general population?

BBS10 p.Pro31Ser (c.91C>T) is very rare (popmax 0.00223%, eas) (gnomAD).

How is Bardet-Biedl syndrome inherited?

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

What do computational predictors say about BBS10 p.Pro31Ser (c.91C>T)?

AlphaMissense predicts ambiguous (score 0.5014) — an in-silico prediction, not a clinical call.

BBS10 p.Pro31Ser

c.91C>T · rs766895183 · VCV2067936

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

ambiguous

0.5014 · ACMG-weighted

gnomAD v4.1

Rare

very rare (popmax 0.00223%, eas)

Missense predictors

2/2 damaging

REVEL, SaProt · AlphaMissense no call

Conditions

Bardet-Biedl syndrome

Computational evidence

Protein change
AlphaMissense	0.5014	ambiguous
REVEL	0.912	moderately pathogenic-leaning
SaProt	LLR -10.28	damaging
⇒ REVEL and SaProt both call this damaging; AlphaMissense makes no call.
Splicing
SpliceAI	—	not assessed · no allele here is in the release
Constraint at this position
Conservation	phyloP 12	GERP 1.8, phastCons 1
Regional constraint	o/e 1.00	unconstrained · MANE · 2,542 bp · p 1 · regional, not allelic
Overall
CADD	30.0	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 0.00223% East Asian · 1/44,814 alleles

Filtering AF 2.8e-05% ClinGen BA1/BS1 input FAF95, joint · FAF99 1.1e-05%

Overall 0.000205% 3/1,460,910 alleles · very rare

Ancestry group	Frequency	1 in
East Asiangrpmax	0.00223%	44,814
European (non-Finnish)	0.00017%	589,810

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: BBS10
Protein: p.Pro31Ser
Coding: c.91C>T
MANE Select: NM_024685
dbSNP: rs766895183
Type: single nucleotide variant
Location: chr12:76348268 (GRCh38)
Gene constraint: LOEUF 1.418 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 71.26

Full BBS10 gene report on Sugi Atlas → Gene function, pathways, protein structure, interactions & more

Disease context

Bardet-Biedl syndrome — disease report on Sugi Atlas → Associated genes, phenotypes, clinical trials & treatments

For Bardet-Biedl syndrome (Orphanet):

Inheritance: Autosomal recessive, Oligogenic
Onset: Antenatal, Childhood, Infancy, Neonatal
Prevalence: 1-9 / 100 000 (Specific population)

Similar variants

BBS10 p.Pro31Leu Uncertain significance ★ ⚠ same residue
BBS10 p.Pro31= Likely benign ★ same residue
BBS10 c.197+1G>T Pathogenic/Likely pathogenic ★★ same condition
BBS10 p.Arg256Ter Pathogenic ★★ same condition
BBS10 p.Arg49Leu Likely pathogenic ★★ ⚠ same condition
BBS10 p.Arg49Trp Pathogenic/Likely pathogenic ★★ ⚠ same condition
BBS10 p.Cys28Ter Pathogenic/Likely pathogenic ★★ same condition
BBS10 p.Cys91Trp 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/bbs10-p-pro31ser (accessed [today's date]).

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