FGFR3 - Comprehensive Cross-Database Identifier and Functional Mapping Reference
Section 1: Gene Identifiers
Core Gene Identifiers
| Database | Identifier | Description |
|---|
| HGNC | HGNC:3690 | Approved symbol: FGFR3 |
| Ensembl | ENSG00000068078 | Fibroblast growth factor receptor 3 |
| NCBI Entrez | 2261 | Gene ID |
| OMIM | 134934 | Gene/Locus MIM number |
| PharmGKB | PA28129 | VIP Gene |
Gene Names and Aliases
| Type | Value |
|---|
| Approved Name | Fibroblast growth factor receptor 3 |
| Previous Symbols | ACH |
| Previous Names | Achondroplasia, thanatophoric dwarfism |
| Aliases | CEK2, JTK4, CD333, HSFGFR3EX |
| Locus Type | Gene with protein product |
| Gene Groups | Receptor tyrosine kinases, CD molecules, I-set domain containing |
Genomic Location
| Parameter | Value |
|---|
| Chromosome | 4 |
| Cytogenetic Band | 4p16.3 |
| Start Position | 1,793,286 (GRCh38) |
| End Position | 1,808,873 (GRCh38) |
| Strand | + (Forward) |
| Genomic Accession | NC_000004.12 |
| Gene Length | ~15.6 kb |
Section 2: Transcript Identifiers
Ensembl Transcripts (Total: 23)
| Transcript ID | Biotype | Start | End | UTR5 | UTR3 |
|---|
| ENST00000440486 | protein_coding | 1,793,293 | 1,808,867 | 1,793,833-1,793,934 | 1,807,263-1,808,867 |
| ENST00000340107 | protein_coding | 1,793,293 | 1,808,867 | 1,793,833-1,793,934 | 1,807,263-1,808,867 |
| ENST00000352904 | protein_coding | 1,793,896 | 1,807,322 | 1,793,896-1,793,934 | 1,807,263-1,807,322 |
| ENST00000412135 | protein_coding | 1,793,293 | 1,808,872 | 1,793,833-1,793,934 | 1,807,263-1,808,872 |
| ENST00000481110 | protein_coding | 1,793,301 | 1,808,791 | 1,793,833-1,793,934 | 1,807,289-1,808,791 |
| ENST00000507588 | protein_coding | 1,801,462 | 1,803,739 | - | - |
| ENST00000901225 | protein_coding | 1,793,293 | 1,808,873 | 1,793,833-1,793,934 | 1,807,263-1,808,873 |
| ENST00000901226 | protein_coding | 1,793,734 | 1,808,873 | 1,793,734-1,793,934 | 1,807,263-1,808,873 |
| ENST00000901227 | protein_coding | 1,793,739 | 1,808,869 | 1,793,739-1,793,934 | 1,807,263-1,808,869 |
| ENST00000901228 | protein_coding | 1,793,783 | 1,808,870 | 1,793,783-1,793,934 | 1,807,263-1,808,870 |
| ENST00000911470 | protein_coding | 1,793,286 | 1,808,871 | 1,793,833-1,793,934 | 1,807,263-1,808,871 |
| ENST00000911471 | protein_coding | 1,793,288 | 1,808,871 | 1,793,833-1,793,934 | 1,807,263-1,808,871 |
| ENST00000911472 | protein_coding | 1,793,295 | 1,808,870 | 1,793,833-1,793,934 | 1,807,263-1,808,870 |
| ENST00000911473 | protein_coding | 1,793,295 | 1,808,867 | 1,793,833-1,793,934 | 1,807,263-1,808,867 |
| ENST00000911474 | protein_coding | 1,793,873 | 1,808,871 | 1,793,873-1,793,934 | 1,807,263-1,808,871 |
| ENST00000955401 | protein_coding | 1,793,288 | 1,808,872 | 1,793,833-1,793,934 | 1,807,263-1,808,872 |
| ENST00000955402 | protein_coding | 1,793,294 | 1,808,865 | 1,793,833-1,793,934 | 1,807,263-1,808,865 |
| ENST00000955403 | protein_coding | 1,793,670 | 1,808,864 | 1,793,670-1,793,934 | 1,807,263-1,808,864 |
| ENST00000955404 | protein_coding | 1,793,731 | 1,808,867 | 1,793,731-1,793,934 | 1,807,263-1,808,867 |
| ENST00000260795 | nonsense_mediated_decay | 1,793,312 | 1,807,275 | 1,793,833-1,793,934 | 1,807,116-1,807,275 |
| ENST00000643463 | protein_coding_CDS_not_defined | 1,801,912 | 1,804,520 | - | - |
| ENST00000469068 | retained_intron | 1,804,492 | 1,805,859 | - | - |
| ENST00000474521 | retained_intron | 1,801,629 | 1,803,152 | - | - |
RefSeq Transcripts (Human - Total: 8 reviewed mRNA)
| Accession | Type | Status | MANE Select |
|---|
| NM_000142 | mRNA | REVIEWED | ✓ YES (Canonical) |
| NM_001163213 | mRNA | REVIEWED | No |
| NM_001354809 | mRNA | REVIEWED | No |
| NM_001354810 | mRNA | REVIEWED | No |
| NM_022965 | mRNA | REVIEWED | No |
| NR_148971 | ncRNA | REVIEWED | No |
| XM_006713868-XM_054349268 | mRNA | PREDICTED | No |
CCDS Identifiers (Total: 4)
| CCDS ID | Notes |
|---|
| CCDS3353 | Consensus CDS |
| CCDS3354 | Consensus CDS |
| CCDS54706 | Consensus CDS |
| CCDS87200 | Consensus CDS |
Exons for Canonical Transcript ENST00000440486 (Total: 18 exons)
| Exon ID | Start | End | Length |
|---|
| ENSE00001744397 | 1,793,293 | 1,793,465 | 173 bp |
| ENSE00001596390 | 1,793,833 | 1,794,043 | 211 bp |
| ENSE00001164902 | 1,799,254 | 1,799,523 | 270 bp |
| ENSE00000778155 | 1,799,747 | 1,799,812 | 66 bp |
| ENSE00000933877 | 1,801,367 | 1,801,536 | 170 bp |
| ENSE00000778157 | 1,801,620 | 1,801,743 | 124 bp |
| ENSE00003494331 | 1,801,835 | 1,802,025 | 191 bp |
| ENSE00000778159 | 1,803,692 | 1,803,836 | 145 bp |
| ENSE00000778160 | 1,804,330 | 1,804,520 | 191 bp |
| ENSE00000843002 | 1,804,824 | 1,804,969 | 146 bp |
| ENSE00003521592 | 1,805,355 | 1,805,476 | 122 bp |
| ENSE00003655496 | 1,805,559 | 1,805,669 | 111 bp |
| ENSE00001768214 | 1,805,750 | 1,805,940 | 191 bp |
| ENSE00001604810 | 1,806,051 | 1,806,173 | 123 bp |
| ENSE00001676483 | 1,806,257 | 1,806,327 | 71 bp |
| ENSE00003575180 | 1,806,546 | 1,806,683 | 138 bp |
| ENSE00003518612 | 1,806,829 | 1,806,934 | 106 bp |
| ENSE00002246626 | 1,807,116 | 1,808,867 | 1,752 bp |
Section 3: Protein Identifiers
UniProt Accessions (Total: 6)
| Accession | Status | Notes |
|---|
| P22607 | ✓ Reviewed (Swiss-Prot) | Canonical entry |
| A0A7I2RW32 | Unreviewed | TrEMBL |
| F8W9L4 | Unreviewed | TrEMBL |
| I6LM06 | Unreviewed | TrEMBL |
| Q96T34 | Unreviewed | TrEMBL |
| X5D2G8 | Unreviewed | TrEMBL |
Canonical Protein Properties (P22607)
| Property | Value |
|---|
| Protein Name | Fibroblast growth factor receptor 3 |
| Length | 806 amino acids |
| Molecular Mass | 87,710 Da |
| EC Number | 2.7.10.1 (Receptor protein-tyrosine kinase) |
RefSeq Proteins (Human)
| Accession | Status | MANE Select |
|---|
| NP_000133 | REVIEWED | ✓ YES |
| NP_001156685 | REVIEWED | No |
| NP_001341738 | REVIEWED | No |
| NP_001341739 | REVIEWED | No |
| NP_075254 | REVIEWED | No |
Protein Domains and Families (Total: 14)
| InterPro ID | Name | Type |
|---|
| IPR000719 | Prot_kinase_dom | Domain |
| IPR001245 | Ser-Thr/Tyr_kinase_cat_dom | Domain |
| IPR003598 | Ig_sub2 | Domain |
| IPR003599 | Ig_sub | Domain |
| IPR007110 | Ig-like_dom | Domain |
| IPR008266 | Tyr_kinase_AS | Active_site |
| IPR013098 | Ig_I-set | Domain |
| IPR016248 | FGF_rcpt_fam | Family |
| IPR017441 | Protein_kinase_ATP_BS | Binding_site |
| IPR020635 | Tyr_kinase_cat_dom | Domain |
| IPR050122 | RTK | Family |
| IPR011009 | Kinase-like_dom_sf | Homologous_superfamily |
| IPR013783 | Ig-like_fold | Homologous_superfamily |
| IPR036179 | Ig-like_dom_sf | Homologous_superfamily |
Section 4: Structure Identifiers
Experimental Structures (Total: 13 PDB entries)
| PDB ID | Title | Method | Resolution |
|---|
| 1RY7 | FGFR3c in complex with FGF1 | X-RAY | 3.2 Å |
| 2LZL | FGFR3 transmembrane domain | NMR | - |
| 4K33 | FGFR3 kinase K650E mutant (thanatophoric dysplasia) | X-RAY | 2.34 Å |
| 6LVM | FGFR3 with pyrimidine inhibitor | X-RAY | 2.53 Å |
| 6PNX | Asymmetric dimer of FGFR3 kinases | X-RAY | 2.20 Å |
| 7DHL | FGFR3 with pyrimidine inhibitor | X-RAY | 2.57 Å |
| 7YSU | FGF23-FGFR3c-αKlotho-HS complex | Cryo-EM | 3.2 Å |
| 8UDT | FGFR3 with KIN-3248 inhibitor | X-RAY | 2.83 Å |
| 8UDU | FGFR3 with Compound 17 | X-RAY | 1.74 Å |
| 8UDV | FGFR3 V555M with Compound 17 | X-RAY | 2.35 Å |
| 9CD7 | FGFR3 with TYRA-300 inhibitor | X-RAY | 2.53 Å |
| 9D1X | FGFR3 with indazole inhibitor | X-RAY | 1.6 Å |
| 9KFU | FGFR3 with inhibitor F1 | X-RAY | 1.4 Å |
AlphaFold Predicted Structure
| Model ID | Sequence Length | Global pLDDT | High-confidence Fraction |
|---|
| AF-P22607 | 6163 | 75.25 | 38% (pLDDT > 90) |
Section 5: Cross-Species Orthologs
| Species | Gene ID | Symbol | Biotype |
|---|
| Mouse (Mus musculus) | ENSMUSG00000054252 | Fgfr3 | protein_coding |
| Rat (Rattus norvegicus) | ENSRNOG00000016818 | Fgfr3 | protein_coding |
| Zebrafish (Danio rerio) | ENSDARG00000004782 | fgfr3 | protein_coding |
| Fruit fly (D. melanogaster) | No ortholog found | - | - |
| Worm (C. elegans) | No ortholog found | - | - |
| Yeast (S. cerevisiae) | No ortholog found | - | - |
Section 6: Clinical Variants & AI Predictions
ClinVar Variant Summary (Total: 1,154 variants)
| Classification | Count |
|---|
| Pathogenic | 36 |
| Likely Pathogenic | 14 |
| Uncertain Significance (VUS) | 100+ |
| Conflicting interpretations | Multiple |
| Likely Benign | Multiple |
| Benign | Multiple |
TOP 36 Pathogenic Variants
| ClinVar ID | HGVS Notation | Protein Change | Associated Condition |
|---|
| 16327 | c.1138G>A | p.Gly380Arg | Achondroplasia (most common) |
| 16328 | c.1138G>C | p.Gly380Arg | Achondroplasia |
| 16331 | c.1948A>G | p.Lys650Glu | Thanatophoric dysplasia II |
| 16341 | c.1949A>T | p.Lys650Met | SADDAN syndrome |
| 16348 | c.1948A>C | p.Lys650Gln | Hypochondroplasia |
| 16337 | c.1620C>A | p.Asn540Lys | Hypochondroplasia |
| 16332 | c.742C>T | p.Arg248Cys | Craniosynostosis (Muenke) |
| 16339 | c.746C>G | p.Ser249Cys | Craniosynostosis |
| 16329 | c.1172C>A | p.Ala391Glu | Crouzon-acanthosis nigricans |
| 16333 | c.1111A>T | p.Ser371Cys | Thanatophoric dysplasia I |
| 16342 | c.1118A>G | p.Tyr373Cys | Thanatophoric dysplasia I |
| 16330 | c.1123G>T | p.Gly375Cys | Skeletal dysplasia |
| 16359 | c.1108G>T | p.Gly370Cys | Thanatophoric dysplasia I |
| 16356 | c.835A>T | p.Ser279Cys | Muenke syndrome |
| 16334 | c.2419T>G | p.Ter807Gly | Stop-loss variant |
| 16335 | c.2419T>A | p.Ter807Arg | Stop-loss variant |
| 65562 | c.2420G>T | p.Ter807Leu | Stop-loss variant |
| 994395 | c.2420G>C | p.Ter807Ser | Stop-loss variant |
| 16346 | c.1950G>T | p.Lys650Asn | Skeletal dysplasia |
| 65855 | c.1949A>C | p.Lys650Thr | Skeletal dysplasia |
| 16355 | c.1862G>A | p.Arg621His | Skeletal dysplasia |
| 1065490 | c.1954A>G | p.Thr652Ala | Skeletal dysplasia |
| 649812 | c.1052C>T | p.Ser351Phe | Skeletal dysplasia |
| 1526266 | c.1043C>G | p.Ser348Cys | Skeletal dysplasia |
| 65826 | c.1024G>T | p.Gly342Cys | Skeletal dysplasia |
| 16336 | c.2421A>T | p.Ter807Cys | Stop-loss variant |
| 65563 | c.2421A>C | p.Ter807Cys | Stop-loss variant |
| 16352 | c.850del | p.His284fs | Frameshift |
| 1680030 | c.791C>T | p.Thr264Met | Skeletal dysplasia |
| 1680033 | c.802G>T | p.Gly268Cys | Skeletal dysplasia |
| 156545 | c.1637C>A | p.Thr546Lys | Skeletal dysplasia |
| 16351 | c.964G>A | p.Glu322Lys | Skeletal dysplasia |
| 2582275 | c.1196G>A | p.Arg399His | Skeletal dysplasia |
| 2582277 | c.1910G>A | p.Gly637Glu | Skeletal dysplasia |
| 2582278 | c.2089G>A | p.Gly697Ser | Skeletal dysplasia |
| 16343 | t(4;14) translocation | - | Multiple myeloma |
SpliceAI Predictions (Total: 2,609 variants)
TOP 20 High-Impact Splice-Altering Variants:
| Variant | Effect | Delta Score |
|---|
| 4:1793463:CAG>C | donor_loss | 0.99 |
| 4:1793466:G>GA | donor_loss | 0.99 |
| 4:1793467:T>A | donor_loss | 0.99 |
| 4:1793831:A>AG | acceptor_gain | 0.99 |
| 4:1793832:G>GG | acceptor_gain | 0.99 |
| 4:1793597:A>T | donor_gain | 0.98 |
| 4:1793466:G>GG | donor_gain | 0.96 |
| 4:1793832:GT>G | acceptor_gain | 0.95 |
| 4:1793623:G>GT | donor_gain | 0.95 |
| 4:1793827:CTGTA>C | acceptor_loss | 0.94 |
| 4:1793828:TGTA>T | acceptor_loss | 0.94 |
| 4:1793829:GTA>G | acceptor_loss | 0.94 |
| 4:1793830:TAGT>T | acceptor_loss | 0.94 |
| 4:1793831:A>C | acceptor_loss | 0.94 |
| 4:1793832:G>GA | acceptor_loss | 0.94 |
| 4:1793461:GCCAG>G | donor_gain | 0.93 |
| 4:1793643:G>GT | donor_gain | 0.93 |
| 4:1794039:GGCAG>G | donor_gain | 0.97 |
| 4:1793622:G>GT | donor_gain | 0.91 |
| 4:1793623:G>T | donor_gain | 0.91 |
AlphaMissense Predictions (Total: 5,213 variants)
TOP 50 Predicted Pathogenic Missense Variants:
| Variant | Protein Change | AM Score | Classification |
|---|
| 4:1801378:T>A | W153R | 0.999 | likely_pathogenic |
| 4:1801378:T>C | W153R | 0.999 | likely_pathogenic |
| 4:1801380:G>C | W153C | 0.999 | likely_pathogenic |
| 4:1801380:G>T | W153C | 0.999 | likely_pathogenic |
| 4:1801379:G>C | W153S | 0.997 | likely_pathogenic |
| 4:1799463:T>G | Y107D | 0.996 | likely_pathogenic |
| 4:1799364:T>A | W74R | 0.994 | likely_pathogenic |
| 4:1799364:T>C | W74R | 0.994 | likely_pathogenic |
| 4:1799366:G>C | W74C | 0.994 | likely_pathogenic |
| 4:1799366:G>T | W74C | 0.994 | likely_pathogenic |
| 4:1801378:T>G | W153G | 0.991 | likely_pathogenic |
| 4:1801373:C>G | P151R | 0.991 | likely_pathogenic |
| 4:1801372:C>T | P151S | 0.989 | likely_pathogenic |
| 4:1799463:T>A | Y107N | 0.986 | likely_pathogenic |
| 4:1801372:C>A | P151T | 0.983 | likely_pathogenic |
| 4:1799365:G>C | W74S | 0.978 | likely_pathogenic |
| 4:1801379:G>T | W153L | 0.976 | likely_pathogenic |
| 4:1799464:A>C | Y107S | 0.972 | likely_pathogenic |
| 4:1799425:T>C | L94P | 0.969 | likely_pathogenic |
| 4:1799463:T>C | Y107H | 0.968 | likely_pathogenic |
| 4:1799469:T>A | C109S | 0.965 | likely_pathogenic |
| 4:1799372:G>C | K76N | 0.963 | likely_pathogenic |
| 4:1799325:T>C | C61R | 0.947 | likely_pathogenic |
| 4:1799364:T>G | W74G | 0.943 | likely_pathogenic |
| 4:1799451:G>C | D103H | 0.943 | likely_pathogenic |
| 4:1799320:T>C | L59P | 0.938 | likely_pathogenic |
| 4:1799470:G>A | C109Y | 0.937 | likely_pathogenic |
| 4:1799458:G>A | G105E | 0.930 | likely_pathogenic |
| 4:1799326:G>A | C61Y | 0.928 | likely_pathogenic |
| 4:1799327:T>G | C61W | 0.927 | likely_pathogenic |
| 4:1799452:A>G | D103G | 0.926 | likely_pathogenic |
| 4:1801397:T>A | M159K | 0.924 | likely_pathogenic |
| 4:1799512:T>A | V123E | 0.919 | likely_pathogenic |
| 4:1799452:A>C | D103A | 0.916 | likely_pathogenic |
| 4:1799425:T>G | L94R | 0.913 | likely_pathogenic |
| 4:1801385:G>C | R155P | 0.912 | likely_pathogenic |
| 4:1799458:G>T | G105V | 0.911 | likely_pathogenic |
| 4:1799325:T>A | C61S | 0.905 | likely_pathogenic |
| 4:1801394:G>C | R158P | 0.903 | likely_pathogenic |
| 4:1799452:A>T | D103V | 0.896 | likely_pathogenic |
| 4:1801372:C>G | P151A | 0.893 | likely_pathogenic |
| 4:1799425:T>A | L94Q | 0.893 | likely_pathogenic |
| 4:1799451:G>T | D103Y | 0.889 | likely_pathogenic |
| 4:1799469:T>G | C109G | 0.877 | likely_pathogenic |
| 4:1799371:A>C | K76T | 0.872 | likely_pathogenic |
| 4:1799505:T>C | F121L | 0.872 | likely_pathogenic |
| 4:1799457:G>A | G105R | 0.868 | likely_pathogenic |
| 4:1799453:C>A | D103E | 0.864 | likely_pathogenic |
| 4:1799370:A>G | K76E | 0.855 | likely_pathogenic |
| 4:1799470:G>T | C109F | 0.839 | likely_pathogenic |
Section 7: Biological Pathways & Gene Ontology
Reactome Pathways (Total: 16)
| Pathway ID | Pathway Name | Disease Pathway |
|---|
| R-HSA-190371 | FGFR3b ligand binding and activation | No |
| R-HSA-190372 | FGFR3c ligand binding and activation | No |
| R-HSA-5654227 | Phospholipase C-mediated cascade; FGFR3 | No |
| R-HSA-5654704 | SHC-mediated cascade:FGFR3 | No |
| R-HSA-5654706 | FRS-mediated FGFR3 signaling | No |
| R-HSA-5654710 | PI-3K cascade:FGFR3 | No |
| R-HSA-5654732 | Negative regulation of FGFR3 signaling | No |
| R-HSA-109704 | PI3K Cascade | No |
| R-HSA-1257604 | PIP3 activates AKT signaling | No |
| R-HSA-5673001 | RAF/MAP kinase cascade | No |
| R-HSA-6811558 | PI5P, PP2A and IER3 Regulate PI3K/AKT Signaling | No |
| R-HSA-1839130 | Signaling by activated point mutants of FGFR3 | Yes |
| R-HSA-2033515 | t(4;14) translocations of FGFR3 | Yes |
| R-HSA-5655332 | Signaling by FGFR3 in disease | Yes |
| R-HSA-8853334 | Signaling by FGFR3 fusions in cancer | Yes |
| R-HSA-2219530 | Constitutive Signaling by Aberrant PI3K in Cancer | Yes |
Gene Ontology Annotations (Total: 32)
Biological Process (18 terms)
| GO ID | Term Name |
|---|
| GO:0000165 | MAPK cascade |
| GO:0001501 | skeletal system development |
| GO:0001958 | endochondral ossification |
| GO:0002062 | chondrocyte differentiation |
| GO:0003416 | endochondral bone growth |
| GO:0007259 | cell surface receptor signaling pathway via JAK-STAT |
| GO:0007267 | cell-cell signaling |
| GO:0008284 | positive regulation of cell population proliferation |
| GO:0008543 | fibroblast growth factor receptor signaling pathway |
| GO:0010518 | positive regulation of phospholipase activity |
| GO:0030282 | bone mineralization |
| GO:0035988 | chondrocyte proliferation |
| GO:0042531 | positive regulation of tyrosine phosphorylation of STAT protein |
| GO:0043410 | positive regulation of MAPK cascade |
| GO:0048640 | negative regulation of developmental growth |
| GO:0051897 | positive regulation of PI3K/AKT signaling |
| GO:0060349 | bone morphogenesis |
| GO:0070374 | positive regulation of ERK1 and ERK2 cascade |
| GO:0070977 | bone maturation |
| GO:1902178 | fibroblast growth factor receptor apoptotic signaling pathway |
Molecular Function (6 terms)
| GO ID | Term Name |
|---|
| GO:0004713 | protein tyrosine kinase activity |
| GO:0005007 | fibroblast growth factor receptor activity |
| GO:0005524 | ATP binding |
| GO:0017134 | fibroblast growth factor binding |
| GO:0042802 | identical protein binding |
Cellular Component (8 terms)
| GO ID | Term Name |
|---|
| GO:0005576 | extracellular region |
| GO:0005783 | endoplasmic reticulum |
| GO:0005794 | Golgi apparatus |
| GO:0005886 | plasma membrane |
| GO:0009986 | cell surface |
| GO:0030133 | transport vesicle |
| GO:0043235 | receptor complex |
Section 8: Protein Interactions & Molecular Networks
STRING Protein Interactions (Total: 3,043 interactions)
TOP 50 Highest-Confidence Interactors:
| UniProt ID | Gene | Interaction Score |
|---|
| P22607 | FGFR3 (self) | 997 |
| P09038 | FGF2 | 997 |
| Q92913 | FGF18 | 997 |
| P05230 | FGF1 | 995 |
| P31371 | FGF9 | 995 |
| P55075 | FGF8 | 995 |
| O76093 | FGF20 | 994 |
| O60258 | FGF17 | 956 |
| Q9UEF7 | SLC39A10 | 938 |
| Q9Y6A5 | TACC3 | 938 |
| Q9GZV9 | FGFR1OP2 | 937 |
| O15520 | FGF10 | 932 |
| P11487 | FGF3 | 932 |
| P42336 | PIK3CA | 902 |
| P0DP08 | CALM1 | 896 |
| P21781 | FGF7 | 882 |
| Q15672 | TWIST1 | 881 |
| P10767 | FGF6 | 879 |
| P12034 | FGF5 | 878 |
| Q9NP95 | FGF20 | 877 |
| Q9HCT0 | FGF22 | 876 |
| P08620 | FGF4 | 869 |
| O43320 | FGF16 | 839 |
| O96028 | FGF14 | 839 |
| P01112 | HRAS | 822 |
| Q9NSA1 | FGF21 | 815 |
| O75410 | TACC1 | 806 |
| P01111 | NRAS | 806 |
| O95750 | FGF19 | 790 |
| P42771 | CDKN2A | 776 |
| Q86Z14 | PLEKHA8P1 | 774 |
| P13931 | FGF12 | 769 |
| P23582 | FGF13 | 764 |
| P02458 | COL2A1 | 758 |
| Q14623 | IHH | 749 |
| P01133 | EGF | 733 |
| P35548 | SP7 | 731 |
| P04637 | TP53 | 717 |
| P11362 | FGFR1 | 715 |
| P01116 | KRAS | 709 |
| Q13950 | RUNX2 | 673 |
| P12272 | PTHLH | 661 |
| P22455 | FGFR4 | 647 |
| P29354 | SRC | 646 |
| P18443 | FGFR2 | 645 |
| Q8WU20 | USP8 | 638 |
| P60484 | PTEN | 635 |
| O15266 | SHOX | 631 |
| O95359 | TACC2 | 623 |
| P24385 | CCND1 | 620 |
IntAct Protein Interactions (Total: 1,100 interactions)
TOP 20 with Confidence Scores:
| Interactor Gene | Interaction Type | Score |
|---|
| FGFR3 (self-homodimer) | phosphorylation reaction | 0.73 |
| FGFR3 (self) | direct interaction | 0.73 |
| STIM1 | physical association | 0.66 |
| FGF1 | direct interaction | 0.44 |
| FGF8 | direct interaction | 0.44 |
| FGFR2 | phosphorylation reaction | 0.44 |
| CDK2 | physical association | 0.56 |
| CDKN1A | physical association | 0.56 |
| EZH2 | physical association | 0.56 |
| JUN | physical association | 0.56 |
| MYC | physical association | 0.56 |
| TP53 (indirect via GATA proteins) | physical association | 0.56 |
ESM2 Structural Similarity (Total: 56 similar proteins)
TOP 20 Structurally Similar Proteins:
| UniProt ID | Top Similarity | Avg Similarity |
|---|
| Q62888 | 1.0000 | 0.9706 |
| Q69ZK9 | 1.0000 | 0.9707 |
| P11362 (FGFR1) | 0.9999 | 0.9908 |
| P16092 (FGFR2) | 0.9999 | 0.9910 |
| Q04589 | 0.9999 | 0.9910 |
| A0JM20 | 0.9998 | 0.9834 |
| P55144 | 0.9998 | 0.9833 |
| Q8QFP9 | 0.9998 | 0.9833 |
| Q498D6 | 0.9998 | 0.9843 |
| Q03142 | 0.9998 | 0.9843 |
| P21802 | 0.9997 | 0.9874 |
| P21803 | 0.9997 | 0.9882 |
| P18461 | 0.9997 | 0.9883 |
| O70468 | 0.9996 | 0.9663 |
| P56741 | 0.9996 | 0.9668 |
| Q13308 | 0.9995 | 0.9835 |
| Q14160 | 0.9995 | 0.9710 |
| A0A8P0N4K0 | 0.9995 | 0.9705 |
| Q8BKG3 | 0.9995 | 0.9837 |
| P22607 (self) | 0.9994 | 0.9866 |
DIAMOND Sequence Similarity (Total: 237 homologs)
TOP 20 Sequence Homologs:
| UniProt ID | Top Identity | Bitscore |
|---|
| A0M8S8 | 100.0% | 2803 |
| A0M8R7 | 99.3% | 2784 |
| P08922 | 79.5% | 3798 |
| P08581 | 99.8% | 2813 |
| P0DV84 | 89.1% | 2845 |
| P13368 | 62.3% | 2871 |
| G5ED65 | 39.5% | 744 |
| P24062 | 99.5% | 2784 |
| P06213 | 99.5% | 2691 |
| P15127 | 97.8% | 2774 |
| P16056 | 95.3% | 2675 |
| P97523 | 95.3% | 2674 |
| P35917 | 95.9% | 2650 |
| P97603 | 92.6% | 2590 |
| P08069 | 97.7% | 2685 |
| O08775 | 95.2% | 2575 |
| P35918 | 95.2% | 2582 |
| P53767 | 92.6% | 2469 |
| P35969 | 92.6% | 2469 |
| P14616 | 89.8% | 2388 |
Section 9: Transcription Factor Regulatory Data
Note: FGFR3 is a receptor tyrosine kinase, NOT a transcription factor.
Upstream Regulators (TFs that regulate FGFR3 - CollecTRI data, Total: 18)
| TF Gene | Regulation Type | Confidence |
|---|
| PROX1 | Activation | High |
| SRF | Activation | High |
| TP63 | - | High |
| TP73 | - | High |
| ASCL2 | - | High |
| RUNX2 | Activation | Low |
| SHOX | Activation | - |
| SP1 | Unknown | - |
| SP3 | Unknown | - |
| SP4 | Unknown | - |
| EGR1 | Unknown | - |
| STAT1 | Repression | - |
| DNMT3B | Repression | Low |
| ESR1 | - | Low |
| NR2F2 | - | Low |
| SPI1 | - | Low |
| ZBTB16 | - | Low |
| ZNF699 | - | Low |
SIGNOR Regulatory Interactions (Total: 27)
| Entity A | Entity B | Effect | Mechanism |
|---|
| FGF1 | FGFR3 | up-regulates | binding |
| FGF2 | FGFR3 | up-regulates | binding |
| FGFR3 | FGFR3 | up-regulates activity | phosphorylation (autophosphorylation) |
| FGFR3 | STAT1 | up-regulates activity | phosphorylation |
| FGFR3 | STAT3 | up-regulates activity | phosphorylation |
| FGFR3 | PTEN | unknown | phosphorylation |
| FGFR3 | MAP3K7 | up-regulates activity | phosphorylation |
| FGFR3 | TET2 | down-regulates | phosphorylation/destabilization |
| FGFR3 | ICK | down-regulates activity | phosphorylation |
| FGFR3 | Glo1 | up-regulates activity | phosphorylation |
| hsa-mir-152-3p | FGFR3 | down-regulates | post-transcriptional |
| BGJ-398 (Infigratinib) | FGFR3 | down-regulates | chemical inhibition |
| PD173074 | FGFR3 | down-regulates | chemical inhibition |
| nintedanib | FGFR3 | down-regulates activity | chemical inhibition |
| pazopanib | FGFR3 | down-regulates activity | chemical inhibition |
| ponatinib | FGFR3 | down-regulates activity | chemical inhibition |
Section 10: Drug & Pharmacology Data
ChEMBL Target Information
| Target ID | Target Name | Type |
|---|
| CHEMBL2742 | Fibroblast growth factor receptor 3 | SINGLE PROTEIN |
| CHEMBL2095217 | Fibroblast growth factor receptor | PROTEIN FAMILY |
| CHEMBL5291680 | Protein cereblon/FGFR3 | PROTEIN-PROTEIN INTERACTION |
FDA-Approved Drugs Targeting FGFR3 (Phase 4, Total: 18)
| ChEMBL ID | Drug Name | Indication/Mechanism |
|---|
| CHEMBL3545376 | ERDAFITINIB | Selective FGFR inhibitor (bladder cancer) |
| CHEMBL1852688 | INFIGRATINIB | Selective FGFR inhibitor (cholangiocarcinoma) |
| CHEMBL3701238 | FUTIBATINIB | Selective FGFR inhibitor |
| CHEMBL4297522 | PEMIGATINIB | Selective FGFR inhibitor (cholangiocarcinoma) |
| CHEMBL1171837 | PONATINIB | Multi-kinase inhibitor (CML) |
| CHEMBL1287853 | FEDRATINIB | JAK2/FLT3 inhibitor |
| CHEMBL1289926 | AXITINIB | VEGFR/PDGFR inhibitor (RCC) |
| CHEMBL1336 | SORAFENIB | Multi-kinase inhibitor (HCC/RCC) |
| CHEMBL1983268 | ENTRECTINIB | TRKA/B/C, ROS1, ALK inhibitor |
| CHEMBL24828 | VANDETANIB | VEGFR/EGFR inhibitor (thyroid cancer) |
| CHEMBL3039504 | NINTEDANIB ESYLATE | Triple angiokinase inhibitor |
| CHEMBL502835 | NINTEDANIB | Triple angiokinase inhibitor (IPF) |
| CHEMBL3545311 | BRIGATINIB | ALK inhibitor |
| CHEMBL477772 | PAZOPANIB | Multi-kinase inhibitor (RCC/STS) |
| CHEMBL535 | SUNITINIB | Multi-kinase inhibitor (GIST/RCC) |
| CHEMBL601719 | CRIZOTINIB | ALK/MET/ROS1 inhibitor |
| CHEMBL608533 | MIDOSTAURIN | Multi-kinase inhibitor (AML) |
| CHEMBL2403108 | CERITINIB | ALK inhibitor |
| CHEMBL5416410 | DASATINIB | BCR-ABL/SRC inhibitor (CML) |
Phase 3 Clinical Candidates (Total: 8)
| ChEMBL ID | Drug Name |
|---|
| CHEMBL223360 | LINIFANIB |
| CHEMBL377300 | BRIVANIB |
| CHEMBL483158 | ALISERTIB |
| CHEMBL491473 | CEDIRANIB |
| CHEMBL522892 | DOVITINIB |
| CHEMBL603469 | LESTAURTINIB |
PharmGKB Status
| Field | Value |
|---|
| PharmGKB ID | PA28129 |
| VIP Gene | Yes |
| CPIC Guidelines | No |
| Associated Drugs | Brivanib, Erdafitinib |
Cell-Cell Communication (CellPhoneDB, Total: 6 interactions)
| Partner A (Ligand) | Partner B (Receptor) | Classification |
|---|
| FGF1 (P05230) | FGFR3 (P22607) | Signaling by Fibroblast growth factor |
| FGF2 (P09038) | FGFR3 (P22607) | Signaling by Fibroblast growth factor |
| FGF8 (P55075) | FGFR3 (P22607) | Signaling by Fibroblast growth factor |
| FGF9 (P31371) | FGFR3 (P22607) | Signaling by Fibroblast growth factor |
| FGF17 (O60258) | FGFR3 (P22607) | Signaling by Fibroblast growth factor |
| FGF20 (Q9NP95) | FGFR3 (P22607) | Signaling by Fibroblast growth factor |
Section 11: Expression Profiles
Bgee Expression Summary
| Parameter | Value |
|---|
| Gene | ENSG00000068078 (FGFR3) |
| Species | Homo sapiens |
| Expression Breadth | Ubiquitous |
| Total Present Calls | 262 |
| Max Expression Score | 99.52 |
TOP 30 Tissues by Expression Score
| Tissue | Expression Score | Quality | Rank |
|---|
| Upper leg skin | 99.52 | Gold | 223 |
| Skin of hip | 99.40 | Gold | 281 |
| Upper arm skin | 99.28 | Gold | 338 |
| Gingival epithelium | 99.13 | Gold | 409 |
| Tibia | 99.08 | Gold | 429 |
| Gingiva | 99.00 | Gold | 469 |
| Lateral globus pallidus | 98.95 | Gold | 488 |
| Cervix squamous epithelium | 98.90 | Gold | 514 |
| Dorsal motor nucleus of vagus | 98.75 | Gold | 585 |
| Medial globus pallidus | 98.73 | Gold | 594 |
| Globus pallidus | 98.69 | Gold | 609 |
| Optic nerve (cranial nerve II) | 98.62 | Gold | 646 |
| Skin of abdomen | 98.58 | Gold | 663 |
| Penis | 98.51 | Gold | 695 |
| Inferior olivary complex | 98.46 | Gold | 719 |
| Pharyngeal mucosa | 98.34 | Gold | 776 |
| Pancreatic ductal cell | 98.32 | Gold | 783 |
| Nipple | 98.31 | Gold | 790 |
| Zone of skin | 98.30 | Gold | 792 |
| Squamous epithelium | 98.23 | Gold | 825 |
| Skin of leg | 98.22 | Gold | 829 |
| Ventricular zone (brain) | 98.19 | Gold | 846 |
| Lower esophagus mucosa | 98.18 | Gold | 849 |
| Ventral tegmental area | 98.08 | Gold | 897 |
| Renal medulla | 97.95 | Gold | 955 |
| Medulla oblongata | 97.84 | Gold | 1010 |
| Superior vestibular nucleus | 97.78 | Gold | 1040 |
| Nucleus accumbens | 97.75 | Gold | 1050 |
| Esophagus squamous epithelium | 97.67 | Gold | 1090 |
| Periodontal ligament | 97.66 | Gold | 1090 |
Notable Expression Patterns
- Highly expressed in: Skin, epithelial tissues, bone (tibia), brain regions
- Key tissues for FGFR3 function: Cartilage/bone, brain, skin epithelium
Single-Cell Expression Data
| Dataset ID | Description | Species | Cells |
|---|
| E-HCAD-25 | Human single cell atlas of substantia nigra (Parkinson's disease study) | Homo sapiens | 39,533 |
Section 12: Disease Associations
Mendelian Disease Associations (GenCC, Total: 39 curated entries)
| Disease | OMIM ID | Inheritance | Evidence Level |
|---|
| Achondroplasia | OMIM:100800 | Autosomal dominant | Definitive |
| Thanatophoric dysplasia type 1 | OMIM:187600 | Autosomal dominant | Definitive |
| Thanatophoric dysplasia type 2 | OMIM:187601 | Autosomal dominant | Definitive |
| Hypochondroplasia | OMIM:146000 | Autosomal dominant | Definitive |
| Muenke syndrome | OMIM:602849 | Autosomal dominant | Definitive |
| Crouzon syndrome-acanthosis nigricans | OMIM:612247 | Autosomal dominant | Definitive |
| CATSHL syndrome | OMIM:610474 | AD/AR | Definitive |
| SADDAN syndrome | OMIM:616482 | Autosomal dominant | Strong |
| LADD syndrome 2 | OMIM:620192 | Autosomal dominant | Definitive |
| LADD syndrome 1 | OMIM:149730 | Autosomal dominant | Limited |
Orphanet Disease Associations (Total: 13)
| Orphanet ID | Disease Name | Type | Phenotype Count |
|---|
| ORPHA:15 | Achondroplasia | Disease | 39 |
| ORPHA:429 | Hypochondroplasia | Disease | 20 |
| ORPHA:1860 | Thanatophoric dysplasia type 1 | Clinical subtype | 40 |
| ORPHA:93274 | Thanatophoric dysplasia type 2 | Clinical subtype | 35 |
| ORPHA:53271 | Muenke syndrome | Malformation syndrome | 21 |
| ORPHA:93262 | Crouzon syndrome-acanthosis nigricans | Malformation syndrome | 28 |
| ORPHA:85164 | CATSHL syndrome | Disease | 4 |
| ORPHA:85165 | SADDAN syndrome | Disease | 14 |
| ORPHA:2363 | Lacrimoauriculodentodigital syndrome | Malformation syndrome | 63 |
| ORPHA:794 | Saethre-Chotzen syndrome | Malformation syndrome | 61 |
| ORPHA:35099 | Non-syndromic bicoronal craniosynostosis | Morphological anomaly | 11 |
| ORPHA:251576 | Gliosarcoma | Histopathological subtype | 0 |
| ORPHA:251579 | Giant cell glioblastoma | Histopathological subtype | 0 |
TOP 50 HPO Phenotype Associations (Total: 338)
| HPO ID | Phenotype Term |
|---|
| HP:0000006 | Autosomal dominant inheritance |
| HP:0000007 | Autosomal recessive inheritance |
| HP:0001156 | Brachydactyly |
| HP:0000926 | Platyspondyly |
| HP:0000256 | Macrocephaly |
| HP:0000944 | Abnormal metaphysis morphology |
| HP:0000365 | Hearing impairment |
| HP:0000470 | Short neck |
| HP:0000773 | Short ribs |
| HP:0000774 | Narrow chest |
| HP:0000248 | Brachycephaly |
| HP:0001513 | Obesity |
| HP:0000520 | Proptosis |
| HP:0000316 | Hypertelorism |
| HP:0000327 | Hypoplasia of the maxilla |
| HP:0000347 | Micrognathia |
| HP:0000175 | Cleft palate |
| HP:0000238 | Hydrocephalus |
| HP:0001159 | Syndactyly |
| HP:0000486 | Strabismus |
| HP:0000508 | Ptosis |
| HP:0000272 | Malar flattening |
| HP:0000218 | High palate |
| HP:0000189 | Narrow palate |
| HP:0000956 | Acanthosis nigricans |
| HP:0000098 | Tall stature |
| HP:0000767 | Pectus excavatum |
| HP:0000407 | Sensorineural hearing impairment |
| HP:0000405 | Conductive hearing impairment |
| HP:0000270 | Delayed cranial suture closure |
| HP:0000337 | Broad forehead |
| HP:0000348 | High forehead |
| HP:0001166 | Arachnodactyly |
| HP:0000648 | Optic atrophy |
| HP:0000505 | Visual impairment |
| HP:0000668 | Hypodontia |
| HP:0000682 | Abnormal dental enamel morphology |
| HP:0000689 | Dental malocclusion |
| HP:0000403 | Recurrent otitis media |
| HP:0000452 | Choanal stenosis |
| HP:0000453 | Choanal atresia |
| HP:0000463 | Anteverted nares |
| HP:0000369 | Low-set ears |
| HP:0000377 | Abnormal pinna morphology |
| HP:0001172 | Abnormal thumb morphology |
| HP:0000126 | Hydronephrosis |
| HP:0000089 | Renal hypoplasia |
| HP:0000076 | Vesicoureteral reflux |
| HP:0000813 | Bicornuate uterus |
| HP:0000131 | Uterine leiomyoma |
GWAS Associations (Total: 6)
| Study ID | Trait | P-value | Mapped Gene |
|---|
| GCST002240_3 | Bladder cancer | 7.0e-25 | TACC3 |
| GCST000842_6 | Bladder cancer | 4.0e-13 | TACC3 |
| GCST000639_2 | Urinary bladder cancer | 1.0e-11 | TACC3 |
| GCST006585_940 | Blood protein levels | 7.0e-10 | TACC3-FGFR3 |
| GCST90020028_1391 | Hip circumference adjusted for BMI | 7.0e-09 | TACC3-FGFR3 |
| GCST009391_1311 | Metabolite levels | 3.0e-06 | LETM1 |
SUMMARY STATISTICS
| Category | Count |
|---|
| Ensembl Transcripts | 23 |
| RefSeq mRNA (human reviewed) | 8 |
| CCDS IDs | 4 |
| Exons (canonical transcript) | 18 |
| UniProt Entries | 6 |
| InterPro Domains | 14 |
| PDB Structures | 13 |
| Orthologs | 3 (mouse, rat, zebrafish) |
| ClinVar Variants | 1,154 |
| Pathogenic Variants | 36 |
| SpliceAI Predictions | 2,609 |
| AlphaMissense Predictions | 5,213 |
| Reactome Pathways | 16 |
| GO Terms | 32 |
| STRING Interactions | 3,043 |
| IntAct Interactions | 1,100 |
| ESM2 Similar Proteins | 56 |
| DIAMOND Homologs | 237 |
| Upstream TF Regulators | 18 |
| FDA-Approved Targeting Drugs | 18 |
| GenCC Disease Associations | 39 |
| Orphanet Diseases | 13 |
| HPO Phenotypes | 338 |
| GWAS Associations | 6 |
| Bgee Expression Calls | 262 |
Generated from BioBTree integrated biological database
Data accessed: 2026-04-01
I’ve compiled a comprehensive cross-database identifier and functional mapping reference for FGFR3 (Fibroblast Growth Factor Receptor 3).
Key Highlights:
Gene Identifiers:
HGNC:3690 | Ensembl: ENSG00000068078 | Entrez: 2261 | OMIM: 134934
Location: Chr 4p16.3 (1,793,286-1,808,873, + strand)
Transcripts & Protein:
23 Ensembl transcripts (19 protein-coding)
MANE Select: NM_000142 / NP_000133
Canonical UniProt: P22607 (806 aa, 87.7 kDa)
4 CCDS IDs, 18 exons
Structures:
13 PDB structures (best resolution: 1.4 Å - 9KFU)
AlphaFold model with 75.25 pLDDT
Clinical Significance:
1,154 ClinVar variants (36 pathogenic, 14 likely pathogenic)
2,609 SpliceAI predictions, 5,213 AlphaMissense predictions
Key hotspot: p.Gly380Arg (causes >98% of achondroplasia)
Disease Associations:
Achondroplasia (most common skeletal dysplasia)
Thanatophoric dysplasia types 1 & 2
Hypochondroplasia
Muenke syndrome (craniosynostosis)
SADDAN syndrome
Bladder cancer (somatic mutations)
Drug Targeting:
18 FDA-approved drugs target FGFR3
Selective FGFR inhibitors: Erdafitinib, Infigratinib, Futibatinib, Pemigatinib
Expression:
Ubiquitous expression (262 tissue calls)
Highest in: skin, bone (tibia), brain regions, epithelial tissues