CIBAR1

protein-coding

CBY1 interacting BAR domain containing 1

Gene summary

Enables phospholipid binding activity. Involved in several processes, including inner mitochondrial membrane organization; limb morphogenesis; and membrane tubulation. Located in several cellular components, including centriole; ciliary base; and mitochondrial crista. [provided by Alliance of Genome Resources, Jul 2025]

Previous symbols:
  • FAM92A1
  • FAM92A

MANE transcript

NM_145269.5

Inheritance

AR

ClinVar variants

P:4U:36B:4

Top phenotype

Polydactyly, postaxial, type A9

gnomAD constraint

pLI —, LoF o/e 0.71

Max pathogenic AF

—

Genomic locus

chr8:93,698,561-93,731,527

External References & Databases

Transcript & Mutation Effects

hg38 • Region Span ~33.0 kb
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GenCC Phenotypes & Disease Associations

Curated gene-disease validity assertions and inheritance patterns

polydactyly, postaxial, type A9LIMITED

Inheritance Pattern: AR

Disease ID:MONDO:0032603

Submitter: Ambry Genetics

postaxial polydactyly type ASUPPORTIVE

Inheritance Pattern: AR

Disease ID:MONDO:0019673

Submitter: Orphanet

polydactyly, postaxial, type A9MODERATE

Inheritance Pattern: AR

Disease ID:MONDO:0032603

Submitter: PanelApp Australia

Clinical Genomic Database (CGD)

Polydactyly, postaxial, type A9AR

Manifestation: Musculoskeletal

Intervention: General

Rationale: Genetic knowledge may be beneficial related to issues such as selection of optimal supportive care, informed medical decision-making, prognostic considerations, and avoidance of unnecessary testing

Refs: 30395363Source: CGD (NHGRI)

ClinVar Associated Diseases & Phenotypes

Reported disease conditions connected to CIBAR1 variants in ClinVar

5 Conditions Cataloged
not specifiedTotal: 37
Polydactyly, postaxial, type A9Total: 3
CIBAR1-related disorderTotal: 2
Polydactyly, postaxial, type A1Total: 1
Postaxial polydactyly type ATotal: 1

ClinVar Variants & Pathogenicity by Type

Statistics based on transcript NM_145269.5. Only rare variants are included.

We include only reliable ClinVar variants with their consequences to MANE Select, MANE Plus Clinical transcripts, or transcripts with TSL equal to 1. Click a count to filter the variants table below.

Slight differences between displayed counts and ClinVar may occur due to a different transcript/consequence chosen by our variant effect predictor, or because we classify Benign/Likely benign as Likely benign and Pathogenic/Likely pathogenic as Likely pathogenic.

EffectPLPVUSLBBSum
synonymous
1
clinvar
2
clinvar
3
missense
1
clinvar
35
clinvar
2
clinvar
38
nonsense
2
clinvar
2
start loss
0
frameshift
1
clinvar
1
splice donor/acceptor (+/-2bp)
0
Total22364044

Highest pathogenic variant AF is 0.0000080597465

Loading ClinVar variants...

Transcript Catalog

Annotated transcript isoforms across RefSeq and Ensembl databases

Showing 4 of 63 transcripts
Transcript IDSourceProtein IDCoding ExonsMANE Status
NM_145269.5RefSeqNP_660312.29MANE Select
ENST00000518322.6EnsemblENSP00000429367.19MANE Select
NM_001283034.2RefSeqNP_001269963.18Standard
ENST00000359421.9EnsemblENSP00000352391.55Standard

Gene Ontology (GO) Annotations & Pathways

Biological processes, molecular functions, cellular components and pathways

Biological Process

  • cilium assembly

Molecular Function

  • protein binding

Cellular Component

  • nucleus
  • cytoplasm
  • centriole
  • ciliary basal body
  • ciliary base

gnomAD Constraint

Source: gnomAD

Gene type
protein_coding
Transcript type
protein_coding
Transcript
ENST00000518322
Coding exons
9
Length
32967
Individuals with no LoFs
124600
Homozygous LoFs
0
Heterozygous LoFs
38
Defined
124638
p
0.000152
Z-ScoreObservedExpectedObserved/ExpectedMutation RateTotal Possible
Missense0.9671131460.7750.000007671858
Missense (PolyPhen)2739.8890.67689565
Synonymous0.4844852.50.9150.00000276532
Loss of Function1.211419.80.7070.00000133217

Population LoF Frequency

PopulationCAFp-valueStatus
African0.0000650.000065rare
Latino/Admixed American0.0000630.000058rare
Ashkenazi Jewish00.0absent
East Asian0.000170.00017rare
Finnish0.0000460.000046rare
European (Non-Finnish)0.000170.00017rare
South Asian0.000410.00039rare
Other00.0absent

dbNSFP Gene Annotations

Source: dbNSFP

Function
FUNCTION: May play a role in ciliogenesis (PubMed:27528616). In cooperation with CBY1 may facilitate ciliogenesis likely by the recruitment and fusion of endosomal vesicles at distal appendages during early stages of ciliogenesis (PubMed:27528616). {ECO:0000269|PubMed:27528616}.;

Recessive Scores

pRec
0.0900

Intolerance Scores

RVIS EVS
0.33
RVIS percentile EVS
73.11

Essentials

Essential (gene trap)
N
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