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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:RTN4-CCDC88A

Fusion Gene and Fusion Protein Summary

check button Fusion gene summary
Fusion partner gene informationFusion gene name: RTN4-CCDC88A
FusionPDB ID: 78567
FusionGDB2.0 ID: 78567
HgeneTgene
Gene symbol

RTN4

CCDC88A

Gene ID

57142

55704

Gene namereticulon 4coiled-coil domain containing 88A
SynonymsASY|NI220/250|NOGO|NSP|NSP-CL|Nbla00271|Nbla10545|RTN-X|RTN4-A|RTN4-B1|RTN4-B2|RTN4-CAPE|GIRDIN|GIV|GRDN|HkRP1|KIAA1212|PEHO|PEHOL
Cytomap

2p16.1

2p16.1

Type of geneprotein-codingprotein-coding
Descriptionreticulon-4Human NogoAMy043 proteinfoocenneurite growth inhibitor 220neurite outgrowth inhibitorneuroendocrine-specific protein C homologreticulon 5girdinAKT-phosphorylation enhancerHook-related protein 1g alpha-interacting vesicle-associated proteingirders of actin filaments
Modification date2020032720200329
UniProtAcc.

Q3V6T2

Main function of 5'-partner protein: FUNCTION: Bifunctional modulator of guanine nucleotide-binding proteins (G proteins) (PubMed:19211784, PubMed:27621449). Acts as a non-receptor guanine nucleotide exchange factor which binds to and activates guanine nucleotide-binding protein G(i) alpha subunits (PubMed:19211784, PubMed:21954290, PubMed:23509302, PubMed:25187647). Also acts as a guanine nucleotide dissociation inhibitor for guanine nucleotide-binding protein G(s) subunit alpha GNAS (PubMed:27621449). Essential for cell migration (PubMed:20462955, PubMed:16139227, PubMed:19211784, PubMed:21954290). Interacts in complex with G(i) alpha subunits with the EGFR receptor, retaining EGFR at the cell membrane following ligand stimulation and promoting EGFR signaling which triggers cell migration (PubMed:20462955). Binding to Gi-alpha subunits displaces the beta and gamma subunits from the heterotrimeric G-protein complex which enhances phosphoinositide 3-kinase (PI3K)-dependent phosphorylation and kinase activity of AKT1/PKB (PubMed:19211784). Phosphorylation of AKT1/PKB induces the phosphorylation of downstream effectors GSK3 and FOXO1/FKHR, and regulates DNA replication and cell proliferation (By similarity). Binds in its tyrosine-phosphorylated form to the phosphatidylinositol 3-kinase (PI3K) regulatory subunit PIK3R1 which enables recruitment of PIK3R1 to the EGFR receptor, enhancing PI3K activity and cell migration (PubMed:21954290). Plays a role as a key modulator of the AKT-mTOR signaling pathway, controlling the tempo of the process of newborn neuron integration during adult neurogenesis, including correct neuron positioning, dendritic development and synapse formation (By similarity). Inhibition of G(s) subunit alpha GNAS leads to reduced cellular levels of cAMP and suppression of cell proliferation (PubMed:27621449). Essential for the integrity of the actin cytoskeleton (PubMed:16139227, PubMed:19211784). Required for formation of actin stress fibers and lamellipodia (PubMed:15882442). May be involved in membrane sorting in the early endosome (PubMed:15882442). Plays a role in ciliogenesis and cilium morphology and positioning and this may partly be through regulation of the localization of scaffolding protein CROCC/Rootletin (PubMed:27623382). {ECO:0000250|UniProtKB:Q5SNZ0, ECO:0000269|PubMed:15882442, ECO:0000269|PubMed:16139227, ECO:0000269|PubMed:19211784, ECO:0000269|PubMed:20462955, ECO:0000269|PubMed:21954290, ECO:0000269|PubMed:23509302, ECO:0000269|PubMed:25187647, ECO:0000269|PubMed:27621449, ECO:0000269|PubMed:27623382}.
Ensembl transtripts involved in fusion geneENST idsENST00000317610, ENST00000337526, 
ENST00000357732, ENST00000402434, 
ENST00000354474, ENST00000357376, 
ENST00000394609, ENST00000394611, 
ENST00000404909, ENST00000405240, 
ENST00000486085, 
ENST00000471947, 
ENST00000422883, ENST00000263630, 
ENST00000336838, ENST00000413716, 
ENST00000436346, 
Fusion gene scores for assessment (based on all fusion genes of FusionGDB 2.0)* DoF score18 X 22 X 7=277213 X 12 X 5=780
# samples 2714
** MAII scorelog2(27/2772*10)=-3.35989594508638
possibly effective Gene in Pan-Cancer Fusion Genes (peGinPCFGs).
DoF>8 and MAII<0
log2(14/780*10)=-2.47804729680464
possibly effective Gene in Pan-Cancer Fusion Genes (peGinPCFGs).
DoF>8 and MAII<0
Fusion gene context

PubMed: RTN4 [Title/Abstract] AND CCDC88A [Title/Abstract] AND fusion [Title/Abstract]

Fusion neoantigen context

PubMed: RTN4 [Title/Abstract] AND CCDC88A [Title/Abstract] AND neoantigen [Title/Abstract]

Most frequent breakpoint (based on all fusion genes of FusionGDB 2.0)RTN4(55276880)-CCDC88A(55646052), # samples:1
Anticipated loss of major functional domain due to fusion event.RTN4-CCDC88A 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.
RTN4-CCDC88A 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.
RTN4-CCDC88A 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.
RTN4-CCDC88A 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.
RTN4-CCDC88A seems lost the major protein functional domain in Hgene partner, which is a IUPHAR drug target due to the frame-shifted ORF.
RTN4-CCDC88A seems lost the major protein functional domain in Hgene partner, which is a tumor suppressor due to the frame-shifted ORF.
RTN4-CCDC88A seems lost the major protein functional domain in Tgene partner, which is a essential gene due to the frame-shifted 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
HgeneRTN4

GO:0030517

negative regulation of axon extension

10667797

HgeneRTN4

GO:0071787

endoplasmic reticulum tubular network formation

24262037|25612671

HgeneRTN4

GO:1905552

positive regulation of protein localization to endoplasmic reticulum

27353365

TgeneCCDC88A

GO:0007264

small GTPase mediated signal transduction

19211784|23509302|27621449|27864364

TgeneCCDC88A

GO:0032147

activation of protein kinase activity

21954290

TgeneCCDC88A

GO:0045742

positive regulation of epidermal growth factor receptor signaling pathway

20462955

TgeneCCDC88A

GO:0061024

membrane organization

15882442

TgeneCCDC88A

GO:0072660

maintenance of protein location in plasma membrane

20462955



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/chr2:55276880/chr2:55646052)
- 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 RTN4 (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 CCDC88A (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)
ENST00000317610RTN4chr255276880-ENST00000336838CCDC88Achr255646052-970880081863491843
ENST00000317610RTN4chr255276880-ENST00000263630CCDC88Achr255646052-962780081862681816
ENST00000317610RTN4chr255276880-ENST00000436346CCDC88Achr255646052-970680081863521844
ENST00000317610RTN4chr255276880-ENST00000413716CCDC88Achr255646052-691880081861271769
ENST00000357732RTN4chr255276880-ENST00000336838CCDC88Achr255646052-970880081863491843
ENST00000357732RTN4chr255276880-ENST00000263630CCDC88Achr255646052-962780081862681816
ENST00000357732RTN4chr255276880-ENST00000436346CCDC88Achr255646052-970680081863521844
ENST00000357732RTN4chr255276880-ENST00000413716CCDC88Achr255646052-691880081861271769
ENST00000337526RTN4chr255276880-ENST00000336838CCDC88Achr255646052-970880081863491843
ENST00000337526RTN4chr255276880-ENST00000263630CCDC88Achr255646052-962780081862681816
ENST00000337526RTN4chr255276880-ENST00000436346CCDC88Achr255646052-970680081863521844
ENST00000337526RTN4chr255276880-ENST00000413716CCDC88Achr255646052-691880081861271769

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
ENST00000317610ENST00000336838RTN4chr255276880-CCDC88Achr255646052-0.001184490.99881554
ENST00000317610ENST00000263630RTN4chr255276880-CCDC88Achr255646052-0.0013427830.9986572
ENST00000317610ENST00000436346RTN4chr255276880-CCDC88Achr255646052-0.0013645180.9986355
ENST00000317610ENST00000413716RTN4chr255276880-CCDC88Achr255646052-0.0018539920.99814606
ENST00000357732ENST00000336838RTN4chr255276880-CCDC88Achr255646052-0.001184490.99881554
ENST00000357732ENST00000263630RTN4chr255276880-CCDC88Achr255646052-0.0013427830.9986572
ENST00000357732ENST00000436346RTN4chr255276880-CCDC88Achr255646052-0.0013645180.9986355
ENST00000357732ENST00000413716RTN4chr255276880-CCDC88Achr255646052-0.0018539920.99814606
ENST00000337526ENST00000336838RTN4chr255276880-CCDC88Achr255646052-0.001184490.99881554
ENST00000337526ENST00000263630RTN4chr255276880-CCDC88Achr255646052-0.0013427830.9986572
ENST00000337526ENST00000436346RTN4chr255276880-CCDC88Achr255646052-0.0013645180.9986355
ENST00000337526ENST00000413716RTN4chr255276880-CCDC88Achr255646052-0.0018539920.99814606

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 RTN4-CCDC88A

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

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Potential FusionNeoAntigen Information of RTN4-CCDC88A 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.

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)

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Potential FusionNeoAntigen Information of RTN4-CCDC88A 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 RTN4-CCDC88A

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.

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Filtering FusionNeoAntigens Through Checking the Interaction with HLAs in 3D of RTN4-CCDC88A

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

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Vaccine Design for the FusionNeoAntigens of RTN4-CCDC88A

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

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 RTN4-CCDC88A

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

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Potential target of CAR-T therapy development for RTN4-CCDC88A

check button Predicted 3D structure. We used RoseTTAFold.

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

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

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Related Drugs to RTN4-CCDC88A

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 RTN4-CCDC88A

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