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Center for Computational Systems Medicine
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Fusion Gene and Fusion Protein Summary

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Fusion Amino Acid Sequences (multiple BPs and multiple gene isoforms)

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Fusion Protein Breakpoint Sequences - (for the Screening of the FusionNeoAntigens)

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Potential FusionNeoAntigens in HLA I - (netMHCpan v4.1 + deepHLApan v1.1)

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Potential FusionNeoAntigens in HLA II - (netMHCIIpan v4.1)

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Fusion Breakpoint 14 AA Peptide Structure - (RoseTTAFold)

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Filtering FusionNeoAntigens Through Checking the Interaction with HLAs in 3D - (Glide)

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Vaccine Design for the FusionNeoAntigens (RNA/protein sequences)

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Potential target of CAR-T therapy development

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Information on the samples that have these potential fusion neoantigens

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Fusion Protein Targeting Drugs - (Manual Curation)

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Fusion Protein Related diseases - (Manual Curation)

Fusion Protein:ICOSLG-KCNJ6

Fusion Gene and Fusion Protein Summary

check button Fusion gene summary
Fusion partner gene informationFusion gene name: ICOSLG-KCNJ6
FusionPDB ID: 38219
FusionGDB2.0 ID: 38219
HgeneTgene
Gene symbol

ICOSLG

KCNJ6

Gene ID

23308

3763

Gene nameinducible T cell costimulator ligandpotassium inwardly rectifying channel subfamily J member 6
SynonymsB7-H2|B7H2|B7RP-1|B7RP1|B7h|CD275|GL50|ICOS-L|ICOSL|LICOSBIR1|GIRK-2|GIRK2|KATP-2|KATP2|KCNJ7|KIR3.2|KPLBS|hiGIRK2
Cytomap

21q22.3

21q22.13

Type of geneprotein-codingprotein-coding
DescriptionICOS ligandB7 homolog 2B7 homologue 2B7-like protein Gl50B7-related protein 1transmembrane protein B7-H2 ICOS ligandG protein-activated inward rectifier potassium channel 2inward rectifier K(+) channel Kir3.2inward rectifier potassium channel KIR3.2potassium channel, inwardly rectifying subfamily J, member 6potassium voltage-gated channel subfamily J member 6
Modification date2020031320200313
UniProtAcc

O75144

Main function of 5'-partner protein: FUNCTION: Ligand for the T-cell-specific cell surface receptor ICOS. Acts as a costimulatory signal for T-cell proliferation and cytokine secretion; induces also B-cell proliferation and differentiation into plasma cells. Could play an important role in mediating local tissue responses to inflammatory conditions, as well as in modulating the secondary immune response by co-stimulating memory T-cell function (By similarity). {ECO:0000250}.

P48051

Main function of 5'-partner protein: FUNCTION: This potassium channel may be involved in the regulation of insulin secretion by glucose and/or neurotransmitters acting through G-protein-coupled receptors. Inward rectifier potassium channels are characterized by a greater tendency to allow potassium to flow into the cell rather than out of it. Their voltage dependence is regulated by the concentration of extracellular potassium; as external potassium is raised, the voltage range of the channel opening shifts to more positive voltages. The inward rectification is mainly due to the blockage of outward current by internal magnesium.
Ensembl transtripts involved in fusion geneENST idsENST00000344330, ENST00000400377, 
ENST00000407780, ENST00000400379, 
ENST00000288309, ENST00000609713, 
Fusion gene scores for assessment (based on all fusion genes of FusionGDB 2.0)* DoF score2 X 2 X 2=813 X 9 X 6=702
# samples 214
** MAII scorelog2(2/8*10)=1.32192809488736log2(14/702*10)=-2.32604420335959
possibly effective Gene in Pan-Cancer Fusion Genes (peGinPCFGs).
DoF>8 and MAII<0
Fusion gene context

PubMed: ICOSLG [Title/Abstract] AND KCNJ6 [Title/Abstract] AND fusion [Title/Abstract]

Fusion neoantigen context

PubMed: ICOSLG [Title/Abstract] AND KCNJ6 [Title/Abstract] AND neoantigen [Title/Abstract]

Most frequent breakpoint (based on all fusion genes of FusionGDB 2.0)ICOSLG(45649937)-KCNJ6(39087434), # samples:1
Anticipated loss of major functional domain due to fusion event.ICOSLG-KCNJ6 seems lost the major protein functional domain in Hgene partner, which is a CGC by not retaining the major functional domain in the partially deleted in-frame ORF.
ICOSLG-KCNJ6 seems lost the major protein functional domain in Hgene partner, which is a essential gene by not retaining the major functional domain in the partially deleted in-frame ORF.
* DoF score (Degree of Frequency) = # partners X # break points X # cancer types
** MAII score (Major Active Isofusion Index) = log2(# samples/DoF score*10)

check button Gene ontology of each fusion partner gene with evidence of Inferred from Direct Assay (IDA) from Entrez
PartnerGeneGO IDGO termPubMed ID


check button Four levels of functional features of fusion genes
Go to FGviewer search page for the most frequent breakpoint (https://ccsmweb.uth.edu/FGviewer/chr21:45649937/chr21:39087434)
- FGviewer provides the online visualization of the retention search of the protein functional features across DNA, RNA, protein, and pathological levels.
- How to search
1. Put your fusion gene symbol.
2. Press the tab key until there will be shown the breakpoint information filled.
4. Go down and press 'Search' tab twice.
4. Go down to have the hyperlink of the search result.
5. Click the hyperlink.
6. See the FGviewer result for your fusion gene.
FGviewer

check buttonRetention analysis results of each fusion partner protein across 39 protein features of UniProt such as six molecule processing features, 13 region features, four site features, six amino acid modification features, two natural variation features, five experimental info features, and 3 secondary structure features, are available here.

check buttonFusion gene breakpoints across ICOSLG (5'-gene)
* Click on the image to open the UCSC genome browser with custom track showing this image in a new window.
all structure

check buttonFusion gene breakpoints across KCNJ6 (3'-gene)
* Click on the image to open the UCSC genome browser with custom track showing this image in a new window.
all structure


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Fusion Amino Acid Sequences


check buttonFusion information from ORFfinder translation from full-length transcript sequence from FusionPDB.
HenstTenstHgeneHchrHbpHstrandTgeneTchrTbpTstrandSeq length
(transcript)
BP loci
(transcript)
Predicted start
(transcript)
Predicted stop
(transcript)
Seq length
(amino acids)
ENST00000344330ICOSLGchr2145649937-ENST00000609713KCNJ6chr2139087434-19951921232167714
ENST00000344330ICOSLGchr2145649937-ENST00000288309KCNJ6chr2139087434-2168921232167715
ENST00000407780ICOSLGchr2145649937-ENST00000609713KCNJ6chr2139087434-2005610261282272714
ENST00000407780ICOSLGchr2145649937-ENST00000288309KCNJ6chr2139087434-227310261282272715
ENST00000400377ICOSLGchr2145649937-ENST00000609713KCNJ6chr2139087434-197266961491942597
ENST00000400377ICOSLGchr2145649937-ENST00000288309KCNJ6chr2139087434-19436961491942598

check buttonDeepORF prediction of the coding potential based on the fusion transcript sequence of in-frame fusion genes. DeepORF is a coding potential classifier based on convolutional neural network by comparing the real Ribo-seq data. If the no-coding score < 0.5 and coding score > 0.5, then the in-frame fusion transcript is predicted as being likely translated.
HenstTenstHgeneHchrHbpHstrandTgeneTchrTbpTstrandNo-coding scoreCoding score
ENST00000344330ENST00000609713ICOSLGchr2145649937-KCNJ6chr2139087434-0.0001696650.99983037
ENST00000344330ENST00000288309ICOSLGchr2145649937-KCNJ6chr2139087434-0.0020916790.99790835
ENST00000407780ENST00000609713ICOSLGchr2145649937-KCNJ6chr2139087434-0.0001683110.9998317
ENST00000407780ENST00000288309ICOSLGchr2145649937-KCNJ6chr2139087434-0.0019675140.9980325
ENST00000400377ENST00000609713ICOSLGchr2145649937-KCNJ6chr2139087434-0.0001476580.9998523
ENST00000400377ENST00000288309ICOSLGchr2145649937-KCNJ6chr2139087434-0.0022573890.99774265

check button Predicted full-length fusion amino acid sequences. For individual full-length fusion transcript sequence from FusionPDB, we ran ORFfinder and chose the longest ORF among all the predicted ones.

Get the fusion protein sequences from here.

Fusion protein sequence information is available in the fasta format.
>FusionGDB ID_FusionGDB isoform ID_FGname_Hgene_Hchr_Hbp_Henst_Tgene_Tchr_Tbp_Tenst_length(fusion AA) seq_BP

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Fusion Protein Breakpoint Sequences for ICOSLG-KCNJ6

check button +/-13 AA sequence from the breakpoints of the fusion protein sequences.
HgeneHchrHbpTgeneTchrTbpLength(fusion protein)BP in fusion proteinPeptide
ICOSLGchr2145649937KCNJ6chr21390874341026299AGAWAVSPETELTANVLEGDSMDQDV
ICOSLGchr2145649937KCNJ6chr2139087434696182AGAWAVSPETELTANVLEGDSMDQDV
ICOSLGchr2145649937KCNJ6chr2139087434921299AGAWAVSPETELTANVLEGDSMDQDV

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Potential FusionNeoAntigen Information of ICOSLG-KCNJ6 in HLA I

check button Multiple sequence alignments of the potential FusionNeoAntigens per fusion breakpoints. If the MSA is empty, then it means that there were predicted fusion neoantigens in this fusion breakpoint, but those predicted fusion neoantigens were not across the breakpoint, which is not fusion-specific.
ICOSLG-KCNJ6_45649937_39087434.msa

check button Potential FusionNeoAntigen Information
* We used NetMHCpan v4.1 (%rank<0.5) and deepHLApan v1.1 (immunogenic score>0.5)
Fusion geneHchrHbpTgeneTchrTbpHLA IFusionNeoAntigen peptideBinding scoreImmunogenic scoreNeoantigen start (at BP 13)Neoantigen end (at BP 13)
ICOSLG-KCNJ6chr2145649937chr2139087434921HLA-B18:01TELTANVL0.99450.8537917
ICOSLG-KCNJ6chr2145649937chr2139087434921HLA-B39:13TELTANVL0.87070.9474917
ICOSLG-KCNJ6chr2145649937chr2139087434921HLA-B35:03SPETELTANVL0.97660.928617
ICOSLG-KCNJ6chr2145649937chr2139087434921HLA-B35:04SPETELTANVL0.94730.9782617
ICOSLG-KCNJ6chr2145649937chr2139087434921HLA-B35:02SPETELTANVL0.94730.9782617
ICOSLG-KCNJ6chr2145649937chr2139087434921HLA-B39:08TELTANVL0.95290.8695917
ICOSLG-KCNJ6chr2145649937chr2139087434921HLA-B35:12SPETELTANVL0.94730.9782617
ICOSLG-KCNJ6chr2145649937chr2139087434921HLA-B39:10SPETELTANVL0.94010.9612617
ICOSLG-KCNJ6chr2145649937chr2139087434921HLA-B40:04TELTANVL0.99970.7341917
ICOSLG-KCNJ6chr2145649937chr2139087434921HLA-B18:05TELTANVL0.99450.8537917
ICOSLG-KCNJ6chr2145649937chr2139087434921HLA-B18:06TELTANVL0.99210.8647917
ICOSLG-KCNJ6chr2145649937chr2139087434921HLA-B18:03TELTANVL0.98920.8365917
ICOSLG-KCNJ6chr2145649937chr2139087434921HLA-B18:11TELTANVL0.95620.8018917
ICOSLG-KCNJ6chr2145649937chr2139087434921HLA-B41:03TELTANVL0.90440.5057917
ICOSLG-KCNJ6chr2145649937chr2139087434921HLA-B51:05SPETELTANV0.59870.5337616
ICOSLG-KCNJ6chr2145649937chr2139087434921HLA-B35:09SPETELTANVL0.94730.9782617
ICOSLG-KCNJ6chr2145649937chr2139087434921HLA-B67:01SPETELTANVL0.93650.8032617

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Potential FusionNeoAntigen Information of ICOSLG-KCNJ6 in HLA II

check button Multiple sequence alignments of the potential FusionNeoAntigens per fusion breakpoints. If the MSA is empty, then it means that there were predicted fusion neoantigens in this fusion breakpoint, but those predicted fusion neoantigens were not across the breakpoint, which is not fusion-specific.

check button Potential FusionNeoAntigen Information
* We used NetMHCIIpan v4.1 (%rank<0.5).
Fusion geneHchrHbpTgeneTchrTbpHLA IIFusionNeoAntigen peptideNeoantigen start (at BP 13)Neoantigen end (at BP 13)

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Fusion breakpoint peptide structures of ICOSLG-KCNJ6

check button3D structures of the fusion breakpoint peptide of 14AA sequence that have potential fusion neoantigens
* The minimum length of the amino acid sequence in RoseTTAFold is 14AA. Here, we predicted the 14AA fusion protein breakpoint sequence not the fusion neoantigen peptide, which is shorter than 14 AA.
File nameBPseqHgeneTgeneHchrHbpTchrTbpAAlen
8874SPETELTANVLEGDICOSLGKCNJ6chr2145649937chr2139087434921

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Filtering FusionNeoAntigens Through Checking the Interaction with HLAs in 3D of ICOSLG-KCNJ6

check buttonVirtual screening between 25 HLAs (from PDB) and FusionNeoAntigens
* We used Glide to predict the interaction between HLAs and neoantigens.
HLA allelePDB IDFile nameBPseqDocking scoreGlide score
HLA-B14:023BVN8874SPETELTANVLEGD-7.75776-7.86956
HLA-B14:023BVN8874SPETELTANVLEGD-4.52646-5.56956
HLA-B52:013W398874SPETELTANVLEGD-7.1873-7.2991
HLA-B52:013W398874SPETELTANVLEGD-2.81174-3.85484
HLA-A11:014UQ28874SPETELTANVLEGD-5.13576-5.24756
HLA-A24:025HGA8874SPETELTANVLEGD-8.42076-8.53256
HLA-A24:025HGA8874SPETELTANVLEGD-7.10496-8.14806
HLA-B27:056PYJ8874SPETELTANVLEGD-9.28296-9.39476
HLA-B44:053DX88874SPETELTANVLEGD-6.88262-6.99442
HLA-B44:053DX88874SPETELTANVLEGD-5.46822-6.51132

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Vaccine Design for the FusionNeoAntigens of ICOSLG-KCNJ6

check button mRNA and peptide sequences of FusionNeoAntigens that have potential interaction with HLA-Is.
Fusion geneHchrHbpTchrTbpStart in +/-13AAEnd in +/-13AAFusionNeoAntigen peptide sequenceFusionNeoAntigen RNA sequence
ICOSLG-KCNJ6chr2145649937chr2139087434616SPETELTANVGTCCGGAGACAGAGCTCACTGCTAACGTCC
ICOSLG-KCNJ6chr2145649937chr2139087434617SPETELTANVLGTCCGGAGACAGAGCTCACTGCTAACGTCCTGG
ICOSLG-KCNJ6chr2145649937chr2139087434917TELTANVLCAGAGCTCACTGCTAACGTCCTGG

check button mRNA and peptide sequences of FusionNeoAntigens that have potential interaction with HLA-IIs.
Fusion geneHchrHbpTchrTbpStart in +/-13AAEnd in +/-13AAFusionNeoAntigen peptideFusionNEoAntigen RNA sequence

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Information of the samples that have these potential fusion neoantigens of ICOSLG-KCNJ6

check button These samples were reported as having these fusion breakpoints. For individual breakpoints, we checked the open reading frames considering multiple gene isoforms and chose the in-frame fusion genes only. Then, we made fusion protein sequences and predicted the fusion neoantigens. These fusion-positive samples may have these potential fusion neoantigens.
Cancer typeFusion geneHchrHbpHenstTchrTbpTenstSample
BRCAICOSLG-KCNJ6chr2145649937ENST00000344330chr2139087434ENST00000288309TCGA-A7-A13D-01A

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Potential target of CAR-T therapy development for ICOSLG-KCNJ6

check button Predicted 3D structure. We used RoseTTAFold.
228_ICOSLG-KCNJ6_t000_.e2e.pdb


check buttonRetention analysis result of each fusion partner protein across 39 protein features of UniProt such as six molecule processing features, 13 region features, four site features, six amino acid modification features, two natural variation features, five experimental info features, and 3 secondary structure features. Here, to provide the retention of the transmembrane domain, we only show the protein feature retention information of those transmembrane features


* Minus value of BPloci means that the break point is located before the CDS.
- In-frame and retained 'Transmembrane'.
PartnerGeneHbpTbpENSTStrandBPexonTotalExonProtein feature loci*BPlociTotalLenProtein featureProtein feature note
HgeneICOSLGchr21:45649937chr21:39087434ENST00000344330-67257_277299310.0TransmembraneHelical
HgeneICOSLGchr21:45649937chr21:39087434ENST00000407780-67257_277299303.0TransmembraneHelical
TgeneKCNJ6chr21:45649937chr21:39087434ENST0000028830914139_1500424.0IntramembraneHelical%3B Pore-forming%3B Name%3DH5
TgeneKCNJ6chr21:45649937chr21:39087434ENST0000028830914151_1570424.0IntramembranePore-forming
TgeneKCNJ6chr21:45649937chr21:39087434ENST0000028830914167_1880424.0TransmembraneHelical%3B Name%3DM2
TgeneKCNJ6chr21:45649937chr21:39087434ENST000002883091490_1140424.0TransmembraneHelical%3B Name%3DM1

check button Subcellular localization prediction of the transmembrane domain retained fusion proteins
* We used DeepLoc 1.0. The order of the X-axis of the barplot is as follows: Entry_ID, Localization, Type, Nucleus, Cytoplasm, Extracellular, Mitochondrion, Cell_membrane, Endoplasmic_reticulum, Plastid, Golgi.apparatus, Lysosome.Vacuole, Peroxisome. Y-axis is the output score of DeepLoc. Clicking the image will open a new tab with a large image.
HgeneHchrHbpHenstTgeneTchrTbpTenstDeepLoc result
ICOSLGchr2145649937ENST00000344330KCNJ6chr2139087434ENST00000288309
ICOSLGchr2145649937ENST00000344330KCNJ6chr2139087434ENST00000609713
ICOSLGchr2145649937ENST00000400377KCNJ6chr2139087434ENST00000288309
ICOSLGchr2145649937ENST00000400377KCNJ6chr2139087434ENST00000609713

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Related Drugs to ICOSLG-KCNJ6

check button Drugs used for this fusion-positive patient.
(Manual curation of PubMed, 04-30-2022 + MyCancerGenome)
HgeneTgeneDrugSourcePMID

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Related Diseases to ICOSLG-KCNJ6

check button Diseases that have this fusion gene.
(Manual curation of PubMed, 04-30-2022 + MyCancerGenome)
HgeneTgeneDiseaseSourcePMID

check button Diseases associated with fusion partners.
(DisGeNet 4.0)
PartnerGeneDisease IDDisease name# pubmedsSource