Is BBS12 p.Val437Ala (c.1310T>C) pathogenic?

BBS12 p.Val437Ala (c.1310T>C) is classified Uncertain significance in BBS12 (ClinVar, Single submitter, 1 submitter; last evaluated 2022-03-19). AlphaMissense: ambiguous (0.426); Absent from gnomAD v4.1; Associated with Bardet-Biedl syndrome.

What condition is associated with BBS12 p.Val437Ala (c.1310T>C)?

BBS12 p.Val437Ala (c.1310T>C) is associated with Bardet-Biedl syndrome (ClinVar).

How common is BBS12 p.Val437Ala (c.1310T>C) in the general population?

BBS12 p.Val437Ala (c.1310T>C) is absent from gnomAD v4.1 (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 BBS12 p.Val437Ala (c.1310T>C)?

AlphaMissense predicts ambiguous (score 0.426) — an in-silico prediction, not a clinical call.

BBS12 p.Val437Ala

c.1310T>C · rs2150737136 · VCV1380834

Uncertain significance Single submitter

Classification

Uncertain significance

ClinVar

Review

Single submitter ★☆☆☆

ClinVar · 1 submitter

AlphaMissense

ambiguous

0.426 · ACMG-weighted

gnomAD v4.1

Absent

absent from gnomAD v4.1

Missense predictors

2/2 damaging

REVEL, SaProt · AlphaMissense no call

Conditions

Bardet-Biedl syndrome

Computational evidence

Protein change
AlphaMissense	0.426	ambiguous
REVEL	0.656	pathogenic-leaning
SaProt	LLR -10.74	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 7.7	GERP 1.9, phastCons 1
Regional constraint	o/e 0.90	unconstrained · MANE · 2,129 bp · p 0.0042 · regional, not allelic
Overall
CADD	24.9	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

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: BBS12
Protein: p.Val437Ala
Coding: c.1310T>C
MANE Select: NM_152618
dbSNP: rs2150737136
Type: single nucleotide variant
Location: chr4:122743202 (GRCh38)
Gene constraint: LOEUF 1.419 · pLI <0.01 (gnomAD)
Structure: AlphaFold pLDDT 73.92

Full BBS12 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

BBS12 p.Ala289Pro Likely pathogenic ★★ same condition
BBS12 p.Arg214Ter Pathogenic/Likely pathogenic ★★ same condition
BBS12 p.Arg355Ter Pathogenic ★★ same condition
BBS12 p.Arg675Ter Pathogenic/Likely pathogenic ★★ same condition
BBS12 p.Gln149Ter Pathogenic/Likely pathogenic ★★ same condition
BBS12 p.Gln228Ter Pathogenic/Likely pathogenic ★★ same condition
BBS12 p.Gln300Ter Pathogenic ★★ same condition
BBS12 p.Gln402Ter 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/bbs12-p-val437ala (accessed [today's date]).

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