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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:MED4-HTR2A

Fusion Gene and Fusion Protein Summary

check button Fusion gene summary
Fusion partner gene informationFusion gene name: MED4-HTR2A
FusionPDB ID: 52779
FusionGDB2.0 ID: 52779
HgeneTgene
Gene symbol

MED4

HTR2A

Gene ID

29079

3356

Gene namemediator complex subunit 45-hydroxytryptamine receptor 2A
SynonymsARC36|DRIP36|HSPC126|TRAP36|VDRIP5-HT2A|HTR2
Cytomap

13q14.2

13q14.2

Type of geneprotein-codingprotein-coding
Descriptionmediator of RNA polymerase II transcription subunit 4TRAP/SMCC/PC2 subunit p36activator-recruited cofactor 36 kDa componentmediator, 34-kD subunit, homologvitamin D receptor-interacting protein, 36-kDvitamin D3 receptor-interacting protein complex 365-hydroxytryptamine receptor 2A5-HT2 receptor5-hydroxytryptamine (serotonin) receptor 2A, G protein-coupledserotonin 5-HT-2A receptor
Modification date2020031320200315
UniProtAcc

Q9NPJ6

Main function of 5'-partner protein: FUNCTION: Component of the Mediator complex, a coactivator involved in the regulated transcription of nearly all RNA polymerase II-dependent genes. Mediator functions as a bridge to convey information from gene-specific regulatory proteins to the basal RNA polymerase II transcription machinery. Mediator is recruited to promoters by direct interactions with regulatory proteins and serves as a scaffold for the assembly of a functional preinitiation complex with RNA polymerase II and the general transcription factors.
.
Ensembl transtripts involved in fusion geneENST idsENST00000495013, ENST00000258648, 
ENST00000378586, 
ENST00000378688, 
ENST00000542664, ENST00000543956, 
Fusion gene scores for assessment (based on all fusion genes of FusionGDB 2.0)* DoF score6 X 6 X 4=1441 X 1 X 1=1
# samples 61
** MAII scorelog2(6/144*10)=-1.26303440583379
possibly effective Gene in Pan-Cancer Fusion Genes (peGinPCFGs).
DoF>8 and MAII<0
log2(1/1*10)=3.32192809488736
Fusion gene context

PubMed: MED4 [Title/Abstract] AND HTR2A [Title/Abstract] AND fusion [Title/Abstract]

Fusion neoantigen context

PubMed: MED4 [Title/Abstract] AND HTR2A [Title/Abstract] AND neoantigen [Title/Abstract]

Most frequent breakpoint (based on all fusion genes of FusionGDB 2.0)MED4(48653980)-HTR2A(47409774), # samples:2
Anticipated loss of major functional domain due to fusion event.MED4-HTR2A 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.
MED4-HTR2A 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.
MED4-HTR2A 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.
MED4-HTR2A 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
HgeneMED4

GO:0006366

transcription by RNA polymerase II

10882111

HgeneMED4

GO:0006367

transcription initiation from RNA polymerase II promoter

12218053

HgeneMED4

GO:0045893

positive regulation of transcription, DNA-templated

10198638

TgeneHTR2A

GO:0006874

cellular calcium ion homeostasis

16517693|19057895

TgeneHTR2A

GO:0007202

activation of phospholipase C activity

16517693

TgeneHTR2A

GO:0010513

positive regulation of phosphatidylinositol biosynthetic process

19057895

TgeneHTR2A

GO:0014065

phosphatidylinositol 3-kinase signaling

16517693

TgeneHTR2A

GO:0042493

response to drug

15862800|18703043

TgeneHTR2A

GO:0051209

release of sequestered calcium ion into cytosol

15862800

TgeneHTR2A

GO:0070374

positive regulation of ERK1 and ERK2 cascade

19057895



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/chr13:48653980/chr13:47409774)
- 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 MED4 (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 HTR2A (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)
ENST00000258648MED4chr1348653980-ENST00000378688HTR2Achr1347409774-4756666171468483
ENST00000258648MED4chr1348653980-ENST00000542664HTR2Achr1347409774-2928666171468483
ENST00000258648MED4chr1348653980-ENST00000543956HTR2Achr1347409774-2928666171468483
ENST00000378586MED4chr1348653980-ENST00000378688HTR2Achr1347409774-467758741389461
ENST00000378586MED4chr1348653980-ENST00000542664HTR2Achr1347409774-284958741389461
ENST00000378586MED4chr1348653980-ENST00000543956HTR2Achr1347409774-284958741389461

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
ENST00000258648ENST00000378688MED4chr1348653980-HTR2Achr1347409774-0.000582380.99941766
ENST00000258648ENST00000542664MED4chr1348653980-HTR2Achr1347409774-0.0011480960.9988519
ENST00000258648ENST00000543956MED4chr1348653980-HTR2Achr1347409774-0.0011480960.9988519
ENST00000378586ENST00000378688MED4chr1348653980-HTR2Achr1347409774-0.0003438320.9996562
ENST00000378586ENST00000542664MED4chr1348653980-HTR2Achr1347409774-0.0007937120.99920636
ENST00000378586ENST00000543956MED4chr1348653980-HTR2Achr1347409774-0.0007937120.99920636

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 MED4-HTR2A

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 MED4-HTR2A 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 MED4-HTR2A 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 MED4-HTR2A

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 MED4-HTR2A

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 MED4-HTR2A

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 MED4-HTR2A

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 MED4-HTR2A

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
TgeneHTR2Achr13:48653980chr13:47409774ENST0000037868813234_2540472.0TransmembraneHelical%3B Name%3D5
TgeneHTR2Achr13:48653980chr13:47409774ENST0000037868813325_3460472.0TransmembraneHelical%3B Name%3D6
TgeneHTR2Achr13:48653980chr13:47409774ENST0000037868813363_3840472.0TransmembraneHelical%3B Name%3D7
TgeneHTR2Achr13:48653980chr13:47409774ENST0000054266424234_2540472.0TransmembraneHelical%3B Name%3D5
TgeneHTR2Achr13:48653980chr13:47409774ENST0000054266424325_3460472.0TransmembraneHelical%3B Name%3D6
TgeneHTR2Achr13:48653980chr13:47409774ENST0000054266424363_3840472.0TransmembraneHelical%3B Name%3D7
TgeneHTR2Achr13:48653980chr13:47409774ENST0000054395613149_1710388.0TransmembraneHelical%3B Name%3D3
TgeneHTR2Achr13:48653980chr13:47409774ENST0000054395613192_2150388.0TransmembraneHelical%3B Name%3D4
TgeneHTR2Achr13:48653980chr13:47409774ENST0000054395613234_2540388.0TransmembraneHelical%3B Name%3D5
TgeneHTR2Achr13:48653980chr13:47409774ENST0000054395613325_3460388.0TransmembraneHelical%3B Name%3D6
TgeneHTR2Achr13:48653980chr13:47409774ENST0000054395613363_3840388.0TransmembraneHelical%3B Name%3D7

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 MED4-HTR2A

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 MED4-HTR2A

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