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CFAP299

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Summary

CFAP299 (cilia and flagella associated protein 299, HGNC:28554) is a protein-coding gene on chromosome 4q21.21, encoding Cilia- and flagella-associated protein 299 (Q6V702). May be involved in spermatogenesis.

Predicted to be located in cytoplasm.

Source: NCBI Gene 255119 — automated summary from GO annotations (Alliance of Genome Resources).

At a glance

  • GWAS associations: 15
  • Clinical variants (ClinVar): 15 total
  • GTEx eGene: eQTL in 8 tissues, sQTL in 3 (q < 0.05)
  • Constraint (gnomAD): pLI 0.00 (LoF-tolerant), LOEUF 1.36 (unconstrained)
  • MANE Select transcript: NM_152770

Identifiers

Gene identifiers

FieldValue
HGNC IDHGNC:28554
Approved symbolCFAP299
Namecilia and flagella associated protein 299
Location4q21.21
Locus typegene with protein product
StatusApproved
Ensembl geneENSG00000197826
Ensembl biotypeprotein_coding
Entrez255119

Gene structure

Transcript identifiers

Ensembl transcripts: 8 — 4 protein_coding_CDS_not_defined, 2 protein_coding, 2 nonsense_mediated_decay

MANE Select: ENST00000358105

Transcript support level (Ensembl TSL; 1 = fully mRNA-supported): TSL 1: 2, TSL 2: 2, TSL 3: 3, TSL 5: 1

ENST00000358105, ENST00000502497, ENST00000503883, ENST00000508314, ENST00000508675, ENST00000512931, ENST00000513920, ENST00000514249

RefSeq mRNA: 2 — MANE Select: NM_152770 NM_001206997, NM_152770

CCDS: CCDS3587, CCDS56336

Canonical transcript exons

ENST00000358105 — 6 exons

ExonStartEnd
ENSE000014105868094481080944939
ENSE000014152788096351780963750
ENSE000016859438033573080335879
ENSE000035131468058309380583183
ENSE000035859848086999380870135
ENSE000036726678036275480362884

Expression profiles

Bgee: expression breadth ubiquitous, 157 present calls, max score 96.86.

FANTOM5 (CAGE): breadth tissue_specific, TPM avg 0.6459 / max 104.7445, expressed in 158 samples.

Highest expression (Bgee): bronchial epithelial cell, bronchus, sperm, buccal mucosa cell, testis.

Genetic regulation across tissues (GTEx eQTL / sQTL)

CFAP299 is an eGene in GTEx v10 — its expression is genetically regulated (eQTL) in 8 tissues and its splicing (sQTL) in 3 (q < 0.05). Strongest associations first; slope = normalized effect of the lead variant’s alternative allele.

11 significant tissue × QTL associations:

TissueQTLq-valueSlopeLead variant
Testiseqtl2.8e-62-0.554:80694034:T:C
Testissqtl2.2e-19+0.714:80639834:G:A
Brain Cerebellumeqtl3.1e-06+1.774:80286532:G:GAGC
Brain Cerebellar Hemisphereeqtl5.7e-06+1.474:80286532:G:GAGC
Lungsqtl6.9e-06-0.464:80633422:C:A
Cells Cultured fibroblastseqtl1.8e-05+0.844:80286532:G:GAGC
Thyroideqtl4.8e-04+0.274:80850936:G:T
Brain Hippocampussqtl2.3e-03-0.674:80639834:G:A
Nerve Tibialeqtl3.4e-03-0.274:80415641:T:C
Esophagus Musculariseqtl1.4e-02-0.224:80722462:G:T
Brain Hippocampuseqtl2.8e-02-0.194:80984870:C:T

FANTOM5 promoters

1 alternative TSS:

Promoter IDTPM avgSamples expressed
485350.6459158

Top tissues by expression

showing 100 of 254 tissues by Bgee expression score (0-100, higher = more expressed):

TissueAnatomy IDExpression scoreQuality
bronchial epithelial cellCL:000232896.86gold quality
bronchusUBERON:000218594.36gold quality
spermCL:000001993.31gold quality
buccal mucosa cellCL:000233691.30silver quality
left testisUBERON:000453388.82gold quality
olfactory segment of nasal mucosaUBERON:000538688.60gold quality
right uterine tubeUBERON:000130288.58gold quality
right testisUBERON:000453487.98gold quality
testisUBERON:000047386.26gold quality
mucosa of paranasal sinusUBERON:000503082.65gold quality
male germ line stem cell (sensu Vertebrata) in testisCL:0000089 ∩ UBERON:000047382.43gold quality
oviduct epitheliumUBERON:000480479.57gold quality
fallopian tubeUBERON:000388975.71gold quality
primordial germ cell in gonadCL:0000670 ∩ UBERON:000099175.24gold quality
epithelium of nasopharynxUBERON:000195173.66gold quality
adult organismUBERON:000702373.52gold quality
stromal cell of endometriumCL:000225568.11gold quality
nasal cavity mucosaUBERON:000182667.88gold quality
corpus callosumUBERON:000233665.53gold quality
right lungUBERON:000216764.75gold quality
sural nerveUBERON:001548864.42gold quality
nasal cavity epitheliumUBERON:000538464.11silver quality
cerebellar cortexUBERON:000212963.58gold quality
cerebellar hemisphereUBERON:000224563.43gold quality
ventricular zoneUBERON:000305362.29gold quality
cerebellumUBERON:000203761.87gold quality
right hemisphere of cerebellumUBERON:001489061.71gold quality
caput epididymisUBERON:000435861.50gold quality
left uterine tubeUBERON:000130359.78gold quality
hypothalamusUBERON:000189857.14gold quality
oocyteCL:000002357.03silver quality
lower esophagus muscularis layerUBERON:003583355.61gold quality
lower esophagusUBERON:001347355.43gold quality
tibialis anteriorUBERON:000138555.04silver quality
cardiac muscle of right atriumUBERON:000337954.34gold quality
left ventricle myocardiumUBERON:000656654.23gold quality
granulocyteCL:000009454.16gold quality
esophagogastric junction muscularis propriaUBERON:003584154.09gold quality
kidney epitheliumUBERON:000481953.93gold quality
upper arm skinUBERON:000426353.52gold quality
Ammon’s hornUBERON:000195453.41gold quality
epithelial cell of pancreasCL:000008353.30gold quality
mucosa of stomachUBERON:000119952.85gold quality
endocervixUBERON:000045852.66gold quality
deltoidUBERON:000147652.56gold quality
lungUBERON:000204852.29gold quality
calcaneal tendonUBERON:000370151.75gold quality
thyroid glandUBERON:000204651.73gold quality
prefrontal cortexUBERON:000045151.57gold quality
left lobe of thyroid glandUBERON:000112051.00gold quality
upper lobe of left lungUBERON:000895251.00gold quality
endometriumUBERON:000129550.80gold quality
right lobe of thyroid glandUBERON:000111950.55gold quality
caudate nucleusUBERON:000187350.53gold quality
upper lobe of lungUBERON:000894850.39gold quality
myocardiumUBERON:000234950.25gold quality
tibial nerveUBERON:000132349.81gold quality
adult mammalian kidneyUBERON:000008249.44gold quality
cerebellar vermisUBERON:000472048.93gold quality
pancreatic ductal cellCL:000207948.85silver quality
kidneyUBERON:000211348.36gold quality
frontal cortexUBERON:000187048.22gold quality
tendonUBERON:000004348.20gold quality
ileal mucosaUBERON:000033148.05silver quality
amygdalaUBERON:000187648.03gold quality
neocortexUBERON:000195047.69gold quality
quadriceps femorisUBERON:000137747.65gold quality
right frontal lobeUBERON:000281047.33gold quality
gall bladderUBERON:000211047.06gold quality
cerebral cortexUBERON:000095646.89gold quality
brainUBERON:000095546.77gold quality
anterior cingulate cortexUBERON:000983546.41gold quality
tendon of biceps brachiiUBERON:000818845.61gold quality
metanephrosUBERON:000008145.47gold quality
vastus lateralisUBERON:000137945.40gold quality
cortex of kidneyUBERON:000122545.33gold quality
right ovaryUBERON:000211845.31gold quality
metanephros cortexUBERON:001053345.07gold quality
forebrainUBERON:000189045.06gold quality
ovaryUBERON:000099244.75gold quality
left ovaryUBERON:000211944.61gold quality
muscle tissueUBERON:000238544.49gold quality
temporal lobeUBERON:000187144.37gold quality
smooth muscle tissueUBERON:000113543.58gold quality
layer of synovial tissueUBERON:000761643.55gold quality
primary visual cortexUBERON:000243643.52gold quality
dorsolateral prefrontal cortexUBERON:000983443.49gold quality
C1 segment of cervical spinal cordUBERON:000646943.39gold quality
skeletal muscle tissue of rectus abdominisUBERON:000451143.37gold quality
Brodmann (1909) area 9UBERON:001354043.26gold quality
amniotic fluidUBERON:000017343.19gold quality
spinal cordUBERON:000224043.13gold quality
uterine cervixUBERON:000000243.04gold quality
thymusUBERON:000237042.92gold quality
skeletal muscle tissueUBERON:000113442.72gold quality
occipital lobeUBERON:000202142.58gold quality
secondary oocyteCL:000065542.57gold quality
uterusUBERON:000099542.56gold quality
ganglionic eminenceUBERON:000402342.39gold quality
lymph nodeUBERON:000002942.09gold quality

Single-cell (SCXA)

Detected in 4 experiment(s), a significant marker in 3.

ExperimentMarker?Max mean expression
E-GEOD-180759yes5299.01
E-ANND-2yes3752.20
E-ANND-3yes10.21
E-MTAB-7381no67.62

HPA expression

RNA tissue specificity: Group enriched

51 HPA tissues / cells by nTPM:

Tissue / cellAxisnTPMProtein (IHC)
Testistissue25.6high
Fallopian tubetissue18.6high
Choroid plexustissue6.0medium
Periaqueductal graytissue5.7
Hippocampal formationtissue4.8
Cerebral cortextissue3.9not detected
Occipital cortextissue3.9
Somatosensory cortextissue2.9
Entorhinal cortextissue2.6
Medulla oblongatatissue2.5
Basal gangliatissue2.4not detected
Retrosplenial cortextissue2.4
Ponstissue2.3
Septumtissue2.3
Temporal cortextissue2.3
Substantia nigratissue2.1
Amygdalatissue2.0
Hypothalamustissue2.0
Caudate putamentissue2.0
Thalamustissue1.9
Superior colliculitissue1.8
Prefrontal cortextissue1.7
Putamentissue1.6
Insular cortextissue1.6
Motor cortextissue1.4
Midbraintissue1.4
Retrosplenial and cingulate cortextissue1.4
Spinal cordtissue1.2
Hippocampustissue1.2not detected
Ventral forebraintissue1.2
Nucleus accumbenstissue1.1
Corpus callosumtissue1.1
Frontal cortextissue1.0
Lungtissue1.0not detected
Locus coeruleustissue0.9
Cerebellumtissue0.8not detected
Olfactory bulbtissue0.8
Retinatissue0.7
Postcentral gyrustissue0.7
Ovarytissue0.5not detected
Thyroid glandtissue0.5not detected
Cervixtissue0.4not detected
Endometrium 1tissue0.2low
Kidneytissue0.2not detected
Pituitary glandtissue0.1
Lymph nodetissue0.1not detected
Breasttissue0.1not detected
Gallbladdertissue0.1not detected
Duodenumtissue0.1not detected
Thymustissue0.1
Nasopharynxtissue-1.0medium

Brain sub-regions (HPA Brain Atlas): detected in 170; highest nTPM — Nucleus tractus solitarii (11.9), Periaquaductal grey, lateral (8.0), Cervical spinal cord, central gray (7.9), Periaquaductal grey, dorsal (6.5), Superior vestibular nucleus (5.3).

Regulation

Is transcription factor: no

miRNA regulators (miRDB)

Targeting CFAP299 by miRDB confidence (max_score; target_count = how many genes the miRNA targets in total — lower means more specific).

11 miRNAs:

miRNAMax scoreAvg scoremiRNA target_count
HSA-MIR-4795-3P100.0074.624024
HSA-MIR-126-5P100.0072.713180
HSA-MIR-576-5P99.8470.462582
HSA-MIR-472999.6972.184233
HSA-MIR-1212499.6869.172700
HSA-MIR-443799.5265.291266
HSA-MIR-429798.7766.952013
HSA-MIR-374B-3P98.6368.241360
HSA-MIR-569198.2367.021335
HSA-MIR-6805-3P98.2367.021334
HSA-MIR-5088-5P97.9764.28487

Functional genomics

gnomAD constraint: pLI 0.000975, LOEUF 1.36, missense Z 0.199 — population loss-of-function intolerance (pLI ≥ 0.9 = LoF-intolerant; lower LOEUF = more constrained). gnomAD

Regional missense constraint (gnomAD RMC): no regional variation along ENST00000358105 — one region, missense o/e 1.12.

Cross-species orthologs

7 orthologs

OrganismSymbolGene ID
danio_reriocfap299ENSDARG00000088753
mus_musculusCfap299ENSMUSG00000057816
rattus_norvegicusCfap299ENSRNOG00000067409
drosophila_melanogasterCG3528FBGN0031430
drosophila_melanogasterCG14013FBGN0031720
drosophila_melanogasterCG14017FBGN0031721
drosophila_melanogasterCG8138FBGN0038122

Mouse-model phenotypes

Observed phenotypes of the mouse ortholog (MGI:1916571) from MGI (Alliance of Genome Resources) — knockout/mutant phenotypes, ranked by annotation count. 1 distinct phenotype terms.

Mouse phenotype (MP)Records
increased heart weight1

Additional cross-species homologs

Sequence homologs in species beyond Ensembl Compara’s model organisms, by Diamond local protein alignment (% sequence identity; best hit per species). Lower-identity rows are more distant homologs. The matched accessions’ gene symbols aren’t in biobtree yet, so each row shows the UniProt accession.

OrganismUniProtIdentityMethod
Bos taurusQ2YDG287.1%Diamond
Xenopus laevisQ5PQ4475.5%Diamond

Genomic neighbors (locus context)

Genes flanking this one on the chromosome (NCBI/Entrez gene neighborhood). Positional context only — some neighbors share regulatory elements (bidirectional promoters, antisense/overlapping transcripts), but chromosomal adjacency is not itself a functional relationship (see Interactions for that).

SymbolTypeEntrez
CFAP299-AS1ncRNA105377305
FGF5protein-coding2250
BMP3protein-coding651
PRKG2-AS2ncRNA124900726
PRKG2protein-coding5593
PRKG2-AS1ncRNA101928942
PRDM8-AS1ncRNA105377303
PRDM8protein-coding56978
RASGEF1Bprotein-coding153020

Protein

Protein identifiers

Cilia- and flagella-associated protein 299 — Q6V702 (reviewed: Q6V702)

All UniProt accessions (3): E7EPK2, G5E9Y8, Q6V702

UniProt curated annotations — full annotation on UniProt →

Function. May be involved in spermatogenesis.

Subcellular location. Cytoplasm. Nucleus.

Miscellaneous. May be produced at very low levels due to a premature stop codon in the mRNA, leading to nonsense-mediated mRNA decay.

Isoforms (3)

UniProt IDNamesCanonical?
Q6V702-22yes
Q6V702-11
Q6V702-33

RefSeq proteins (2): NP_001193926, NP_689983* (*=MANE)

Domains & families (InterPro)

IDNameType
IPR027887DUF4464Family

Pfam: PF14713

UniProt features (23 total): strand 9, splice variant 3, helix 3, sequence conflict 3, turn 2, sequence variant 2, chain 1

Structure

Experimental structures (PDB)

2 structures by resolution:

PDBTitleMethodResolution (Å)
9FGPcilia and flagella associated protein 299X-RAY DIFFRACTION1.49
8J0796nm repeat of human respiratory doublet microtubule and associated axonemal complexesELECTRON MICROSCOPY4.1

Predicted structure (AlphaFold)

ModelpLDDTFraction very-high
AF-Q6V702-F187.400.53

Human Protein Atlas

Protein class: Predicted intracellular proteins

Protein evidence: Evidence at protein level

Subcellular location (HPA, imaging): cytosol; plasma membrane

Antibody reliability (HPA): IH approved · IF approved

Function

Pathways and Gene Ontology

Reactome pathways

0 curated (TAS) of 0; 0 disease pathways. Curated-first; evidence = TAS (manually curated) vs IEA (electronic inference).

MSigDB gene sets: 50 (showing top): SENGUPTA_NASOPHARYNGEAL_CARCINOMA_DN, WHN_B, chr4q21, DODD_NASOPHARYNGEAL_CARCINOMA_DN, MEISSNER_BRAIN_HCP_WITH_H3K4ME3_AND_H3K27ME3, HOXB4_TARGET_GENES, MAFG_TARGET_GENES, PAX3_TARGET_GENES, PAX7_TARGET_GENES, PRDM12_TARGET_GENES, ZNF22_TARGET_GENES, ZNF577_TARGET_GENES, ZNF781_TARGET_GENES, MIR4795_3P, CREIGHTON_ENDOCRINE_THERAPY_RESISTANCE_2

GO Molecular Function (1): protein binding (GO:0005515)

GO Cellular Component (2): nucleus (GO:0005634), cytoplasm (GO:0005737)

GO top-level categories

4 GO namespaces:

CategoryTerms
binding1
intracellular membrane-bounded organelle1
intracellular anatomical structure1
cellular anatomical structure1

Protein interactions and networks

STRING

showing 15 of 1,353 interactions by confidence (×1000):

Protein AProtein BPartner UniProtScore
CFAP299CFAP96A7E2U8546
CFAP299SHISA3A0PJX4536
CFAP299TMEM33P57088530
CFAP299CFAP97D2A0A1B0GU71523
CFAP299ANTXR2P58335518
CFAP299ACOXLQ9NUZ1515
CFAP299SLC30A9Q6PML9512
CFAP299C4orf36Q96KX1504
CFAP299TEX9Q8N6V9485
CFAP299TMX4Q9H1E5471
CFAP299CFAP184Q2M329464
CFAP299CFAP97D1B2RV13450
CFAP299KAZNQ674X7415
CFAP299SHROOM4Q9ULL8411
CFAP299MAGEL2Q9UJ55410

IntAct

Human interaction partners of CFAP299 in IntAct, one row per partner (best MIscore; records = supporting IntAct interaction records).

2 partners by confidence:

PartnerInteraction typeMIscoreRecords
NFE2L2physical association0.5103
UBBassociation0.3501

Disease & clinical

Genetic variants

Variant evidence for CFAP299: 15 ClinVar records (0 pathogenic / likely pathogenic); 15 GWAS associations.

ClinVar

15 variants total. Per-class counts are floors (≥ shown; pagination cap):

ClassificationCount (floor)
Pathogenic0
Likely pathogenic0
Uncertain significance8
Likely benign4
Benign1

SpliceAI

Top 10 splice-impact sites by Δscore (adjacent positions with the same effect merged into one range; 29 predictions of 2,222):

Position(s)EffectΔscoreSites
4:80362752–80362753acceptor_loss1.00002
4:80362885–80362886donor_loss1.00004
4:80500311donor_gain1.0000
4:80583091–80583092acceptor_loss1.00006
4:80583184–80583185donor_loss1.00005
4:80869982acceptor_gain1.0000
4:80335880–80335881donor_loss0.99005
4:80362752–80362753acceptor_loss0.99003
4:80362838donor_gain0.9900
4:80474276acceptor_gain0.9900

AlphaMissense

549 missense substitutions predicted likely pathogenic (of 1,536 scored), across 144 residues. Top 20 hotspot residues, ranked by the number of likely-pathogenic substitutions (of those reachable by a single-nucleotide change), then by mean score:

ResidueLikely-pathogenic substitutionsMean am_pathogenicityMax am_pathogenicity
D15780.9710.985
D13180.9580.979
D3280.9480.966
D19380.9190.964
F6280.9120.990
H22780.9070.964
D22680.9030.956
F18880.8280.989
F14180.8230.958
F11570.9650.989
F14570.9420.979
E10270.9380.977
R13570.9340.984
W16370.9220.969
F22570.9100.972
F1770.9000.990
F2370.8870.971
F16070.8560.983
D3870.7740.873
D2570.7040.839

HPA cancer prognostics

RNA cancer specificity: Cancer enhanced (Uterine Corpus Endometrial Carcinoma)

Disease associations

OMIM: gene `` | disease phenotypes:

GWAS associations

15 associations:

StudyTraitp-value
GCST90000025_953Appendicular lean mass1e-22
GCST000394_1Diastolic blood pressure1e-21
GCST006291_115Spherical equivalent or myopia (age of diagnosis)6e-21
GCST006988_48Blond vs. brown/black hair color4e-14
GCST90014268_32Cataracts3e-12
GCST006976_73Macular thickness9e-11
GCST006661_203Male-pattern baldness2e-9
GCST006291_127Spherical equivalent or myopia (age of diagnosis)3e-8
GCST003075_116Cognitive decline rate in late mild cognitive impairment5e-7
GCST003075_29Cognitive decline rate in late mild cognitive impairment8e-7
GCST008596_6Opioid overdose severity score1e-6
GCST001762_696Obesity-related traits4e-6
GCST008361_8Response to cognitive-behavioural therapy in major depressive disorder5e-6
GCST009959_10Retinal detachment or retinal break5e-6
GCST008596_3Opioid overdose severity score9e-6

EFO canonical traits (from GWAS)

9 canonical traits:

EFO IDTrait name
EFO:0006336diastolic blood pressure
EFO:0004620vitamin B12 measurement
EFO:0007710cognitive decline measurement
EFO:0004847age at onset
EFO:0003924hair color
EFO:0007820cognitive behavioural therapy
EFO:0010140opioid overdose severity measurement
EFO:0010698retinal break
EFO:0004980appendicular lean mass

Drugs & pharmacology

Drug and pharmacology data

Is drug target: no

PharmGKB: 1 entry (CPIC guideline: no)

CTD chemical–gene interactions

15 total (human), top 15 by PubMed support.

ChemicalActions (top 5)PubMed papers
Benzo(a)pyreneaffects methylation2
Tobacco Smoke Pollutiondecreases expression, decreases methylation2
bisphenol Aaffects cotreatment, decreases methylation, increases methylation1
aflatoxin B2increases methylation1
MT19c compounddecreases expression1
Sunitinibdecreases expression1
Fulvestrantaffects cotreatment, decreases methylation1
Air Pollutantsincreases abundance, increases expression1
Arsenicaffects methylation1
Diethylhexyl Phthalatedecreases expression1
Leadaffects methylation1
Smokeincreases abundance, increases expression1
Valproic Acidincreases expression1
Aflatoxin B1decreases methylation1
Antirheumatic Agentsincreases expression1

Clinical trials (associated diseases)

Via MONDO — disease-level, not drug-specific.

  • Disease cohort memberships (association, not causation — diseases whose associated-gene cohort lists this gene; a subset are also under Associated diseases): cataract, retinal detachment