Is BBS7 p.Asp213= (c.639C>T) pathogenic?

BBS7 p.Asp213= (c.639C>T) is classified Benign/Likely benign in BBS7 (ClinVar, Multiple submitters, 2 submitters; last evaluated 2026-01-28). Rare (popmax 0.257%, sas); Associated with Bardet-Biedl syndrome.

What condition is associated with BBS7 p.Asp213= (c.639C>T)?

BBS7 p.Asp213= (c.639C>T) is associated with Bardet-Biedl syndrome (ClinVar).

How common is BBS7 p.Asp213= (c.639C>T) in the general population?

BBS7 p.Asp213= (c.639C>T) is rare (popmax 0.257%, sas) (gnomAD).

How is Bardet-Biedl syndrome inherited?

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

BBS7 p.Asp213=

c.639C>T · rs150407489 · VCV1168200

Benign/Likely benign Multiple submitters

Classification

Benign/Likely benign

ClinVar

Review

Multiple submitters ★★☆☆

ClinVar · 2 submitters

gnomAD v4.1

Rare

rare (popmax 0.257%, sas)

Conditions

Bardet-Biedl syndrome

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 1.3	GERP -2.2, phastCons 1
Overall
CADD	10.6	PHRED · no single calibrated threshold — expert panels disagree

Population frequency

gnomAD v4.1 · exomes + genomes

Grpmax group 0.257% South Asian · 234/90,908 alleles

Filtering AF 0.23% ClinGen BA1/BS1 input FAF95, joint · FAF99 0.22%

Overall 0.0193% 311/1,612,446 alleles · rare

Ancestry group	Frequency	1 in
South Asiangrpmax	0.257%	388
Remaining individualsnot grpmax-eligible	0.024%	4,161
Middle Eastern	0.0165%	6,056
European (non-Finnish)	0.00458%	21,834
East Asian	0.00447%	22,373
African / African-American	0.004%	24,991
Admixed American	0.00333%	29,995

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: BBS7
Protein: p.Asp213=
Coding: c.639C>T
MANE Select: NM_176824
dbSNP: rs150407489
Type: single nucleotide variant
Location: chr4:121854783 (GRCh38)
Gene constraint: LOEUF 0.701 · pLI <0.01 · ClinGen HI gene assoc. with recessive phenotype (gnomAD)
Structure: AlphaFold pLDDT 92.99

Full BBS7 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

BBS7 p.Asp213Gly Uncertain significance ★ ⚠ same residue
BBS7 c.1305+2T>A Likely pathogenic ★★ same condition
BBS7 c.1371+1G>A Likely pathogenic ★★ same condition
BBS7 c.1512-1G>A Likely pathogenic ★★ same condition
BBS7 c.1677-2A>G Pathogenic/Likely pathogenic ★★ same condition
BBS7 c.1891-2A>C Pathogenic/Likely pathogenic ★★ same condition
BBS7 c.342-2A>G Pathogenic/Likely pathogenic ★★ same condition
BBS7 c.849+1G>C Pathogenic/Likely 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/bbs7-p-asp213 (accessed [today's date]).

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