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	Fusion Gene Summary
	Fusion Gene Breakpoints
	Tumorigenic MoA (Mechanism of Action) Scenarios of Fusion Geness
	Fusion Genomic Features
	Fusion Gene ORF Annotations
	Fusion Protein Retained/Non-Retained Functional Features
	Fusion Transcript Sequences
	Fusion Protein Sequences
	Personalized Fusion Protein Sequences
	Fusion Gene Expressed Samples
	Related Drugs

Fusion gene:MPHOSPH8_ATP8A2 (FusionGDB2 ID:HG54737TG51761)

Fusion Gene Summary for MPHOSPH8_ATP8A2

Fusion gene summary

Fusion gene information	Fusion gene name: MPHOSPH8_ATP8A2
	Fusion gene ID: hg54737tg51761
		Hgene	Tgene
	Gene symbol	MPHOSPH8	ATP8A2
	Gene ID	54737	51761
	Gene name	M-phase phosphoprotein 8	ATPase phospholipid transporting 8A2
	Synonyms	HSMPP8|TWA3|mpp8	ATP|ATPIB|CAMRQ4|IB|ML-1
	Cytomap	13q12.11	13q12.13
	Type of gene	protein-coding	protein-coding
	Description	M-phase phosphoprotein 8M-phase phosphoprotein, mppM-phase phosphoprotein, mpp8two hybrid-associated protein 3 with RanBPM	phospholipid-transporting ATPase IBATPase, aminophospholipid transporter, class I, type 8A, member 2ATPase, aminophospholipid transporter-like, class I, type 8A, member 2P4-ATPase flippase complex alpha subunit ATP8A2probable phospholipid-transporting
	Modification date	20240411	20240403
	UniProtAcc	.	.
	Ensembl transtripts involved in fusion gene
Fusion gene scores	* DoF score	* DoF score (Degree of Frequency) = # partners X # break points X # disease types 11 X 8 X 9=792	* DoF score (Degree of Frequency) = # partners X # break points X # disease types 7 X 16 X 13=1456
	# samples	93	22
	** MAII score	** MAII score (Major Active Isofusion Index) = log2(# samples/DoF score*10) log2(93/792*10)=0.231730285915784 effective Gene in Pan-Cancer Fusion Genes (eGinPCFGs). DoF>8 and MAII>0	** MAII score (Major Active Isofusion Index) = log2(# samples/DoF score*10) log2(22/1456*10)=-2.72643492667404 possibly effective Gene in Pan-Cancer Fusion Genes (peGinPCFGs). DoF>8 and MAII<0
Context	PubMed: MPHOSPH8 [Title/Abstract] AND ATP8A2 [Title/Abstract] AND fusion [Title/Abstract]
Most frequent breakpoint

Fusion gene breakpoints across MPHOSPH8 (5'-gene) * Click on the image to open the UCSC genome browser with custom track showing this image in a new window.

Fusion gene breakpoints across ATP8A2 (3'-gene) * Click on the image to open the UCSC genome browser with custom track showing this image in a new window.

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Fusion Gene Breakpoints for MPHOSPH8_ATP8A2

RNA-seq based exon junction arranged fusion gene breakpoints from 8 resources (TCGA, CCLE, cBioPortal, GenBank, ChimerDB, ChimerKB, ChildHoodFusions, and GTEx). For the expressed sample information, go to Fusion Gene Sample section.

DNA-seq based exon junction arranged fusion gene breakpoints from dbVar. For the expressed sample information, go to Fusion Gene Sample section.

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Tumorigenic MoA (Mechanism of Action) Scenarios of Fusion Genes for MPHOSPH8_ATP8A2

To generate these tumorigenic scenario annotations, we implemented a deduction-first, retrieval-later computational framework. The pipeline first applies rule-guided reasoning across ten core mechanistic categories (M1–M10) derived from fusion gene biology to infer candidate mechanisms, tumorigenic scenarios, targeting points, and targeting backgrounds. To ensure empirical accountability, a governed Python workflow retrieves literature candidates via NCBI E-utilities and Europe PMC using tiered searches. Using JSON Schema-constrained LLM evidence judges (GPT-5.6 Luna and Terra), retrieved articles are evaluated for specificity and confidence without de novo PMID generation. This produces two distinct versions: a strict version restricted to high- or medium-confidence fusion-specific evidence, and an extended version incorporating broader gene-, pathway-, and contextual evidence.

* We have 10 tumorigenic mechanism categories of fusion genes as shown below.

Constitutively Active Kinases, Catalytic Domain Dysregulation, & Transmembrane Ligand Fusions	Aberrant Chimeric Transcription Factor / Fusion Transcription Factor Activity	Epigenetic Reprogramming / Histone Modifier Dysregulation	Chromatin Remodeling Dysregulation	Condensate-Driven Transcriptional Rewiring / LLP	Promoter / Enhancer Hijacking	Dominant-Negative Antagonism	Cell Cycle / Checkpoint Bypass / RNA Processing Dysregulation	Subcellular Mislocalization / Spatial Dysregulation	Nuclear Body / Sub-organellar Architecture Disruption & Differentiation Blockade

* Strict version: Restricted to high- or medium-confidence fusion-specific evidence.

Fusion Gene Name

Mechanism Category

Mechanism PubMed

Tumorigenic Scenarios

Tumorigenic Scenario PubMed

Targeting Points

Targeting PubMed

Mechanism Background

Mechanism Background PubMed

* Extended version: Includes all strict-level fusion evidence plus broader gene-, pathway-, and low-confidence contextual evidence.

Fusion Gene Name

Mechanism Category

Mechanism PubMed

Tumorigenic Scenarios

Tumorigenic Scenario PubMed

Targeting Points

Targeting PubMed

Mechanism Background

Mechanism Background PubMed

Main function of each fusion partner protein. (from UniProt)

Hgene	Tgene
.	.

Gene ontology of each fusion partner gene with evidence of Inferred from Direct Assay (IDA) from Entrez

Partner	Gene	GO ID	GO term	PubMed ID
Hgene	MPHOSPH8	GO:0045814	negative regulation of gene expression, epigenetic	26022416|28581500|29211708
Hgene	MPHOSPH8	GO:0090309	positive regulation of DNA methylation-dependent heterochromatin formation	28581500|29211708

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Fusion Genomic Features for MPHOSPH8_ATP8A2

FusionAI prediction of the potential fusion gene breakpoint based on the pre-mature RNA sequence context (+/- 5kb of individual partner genes, total 20kb length sequence) of In-frame fusion genes. FusionAI is a fusion gene breakpoint classifier based on convolutional neural network by comparing the fusion positive and negative sequence context of ~ 20K fusion gene data. From here, we can have the relative potentency of the 20K genomic sequence how individual sequnce will be likely used as the gene fusion breakpoints.

Hgene

Hchr

Hbp

Hstrand

Tgene

Tchr

Tbp

Tstrand

1-p

p (fusion gene breakpoint)

FusionAI prediction of the potential fusion gene breakpoint based on the pre-mature RNA sequence context (+/- 5kb of individual partner genes, total 20kb length sequence) of 5UTR-3CSD fusion genes (N-truncated cases).

Hgene

Hchr

Hbp

Hstrand

Tgene

Tchr

Tbp

Tstrand

1-p

p (fusion gene breakpoint)

FusionAI prediction of the potential fusion gene breakpoint based on the pre-mature RNA sequence context (+/- 5kb of individual partner genes, total 20kb length sequence) of 5CDS-3UTR fusion genes (C-truncated cases).

Hgene

Hchr

Hbp

Hstrand

Tgene

Tchr

Tbp

Tstrand

1-p

p (fusion gene breakpoint)

Distribution of six genomic regulatory feature tracks across a ±5 kb window centered on the fusion breakpoints. We input the breakpoint sequences into AlphaGenome and obtained predicted genome tracks at single-base-pair resolution for each modality by running a single forward pass over the reference sequence. Specifically, for each breakpoint, AlphaGenome processed and returned predicted track data across diverse modalities, which were then averaged across all tracks within each output type and visualized across the ±5 kb window. The left panel shows the 5'-gene breakpoint ±5 kb area, and the right panel shows the 3'-gene breakpoint area, with tracks grouped by category: chromatin accessibility (DNase-seq, ATAC-seq), active transcription (RNA-seq, CAGE), and chromatin binding (ChIP-Histone, ChIP-TF).

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Fusion Gene ORF Annotations for MPHOSPH8_ATP8A2

Open reading frame (ORF) analsis of fusion genes based on Ensembl gene isoform structure. * Click on the break point to see the gene structure around the break point region using the UCSC Genome Browser.

ORFfinder Result Based On The Fusion Transcript Sequences of the In-frame Fusion Genes.

ORFfinder Result Based On The Fusion Transcript Sequences of the 5UTR-3CDS Fusion Genes for N-Truncated Protein Search.

ORFfinder Result Based On The Fusion Transcript Sequences of the 5CDS-3UTR Fusion Genes for C-Truncated Protein Search.

DeepORF 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.

DeepORF Prediction of The Coding Potential Based on The Fusion Transcript Sequence of 5UTR-3CDS Fusion Genes (Potential N-Truncated Proteins).

DeepORF Prediction of The Coding Potential Based on The Fusion Transcript Sequence of 5CDS-3UTR Fusion Genes (Potential C-Truncated Proteins).

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Fusion Protein Retained/Non-Retained Functional Features for MPHOSPH8_ATP8A2

Protein Level Annotation from FGviewer * Retention 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, because of limited space for viewing, we only show the protein feature retention information belong to the 13 regional features. All retention annotation result can be downloaded at download page. Minus value of BPloci means that the break pointn is located before the CDS.

- In-frame and retained protein feature among the 13 regional features (visualization across fusion protein length).

- In-frame and not-retained protein feature among the 13 regional features.

- Retained PPIs in in-frame fusion.

Partner

Hgene

Hbp

Tgene

Tbp

ENST

UniProt

Strand

BPexon

TotalExon

Protein feature loci

*BPloci

TotalLen

Still interaction with

- Lost PPIs in in-frame fusion.

Partner

Hgene

Hbp

Tgene

Tbp

ENST

UniProt

Strand

BPexon

TotalExon

Protein feature loci

*BPloci

TotalLen

Interaction lost with

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Fusion Transcript Sequence for MPHOSPH8_ATP8A2

In-frame Fusion Transcript Sequences.

N-Truncated Transcript (5UTR-3CDS) Sequences

C-Truncated Transcript (5CDS-3UTR) Sequences

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Fusion Protein Sequence for MPHOSPH8_ATP8A2

In-frame Fusion Protein Sequences.

N-Truncated Protein (5UTR-3CDS) Sequences

C-Truncated Protein (5CDS-3UTR) Sequences

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Personalized Fusion Protein Sequence for MPHOSPH8_ATP8A2

TCGA Kinase/DNA-binding Domain Mutated Fusion Protein Sequences

CCLE Kinase/DNA-binding Domain Mutated Fusion Protein Sequences

TCGA All Mutated Fusion Protein Sequences

CCLE All Mutated Fusion Protein Sequences

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Fusion Gene Exprssed Samples for MPHOSPH8_ATP8A2

RNA-seq based fusion gene expressed samples.

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Related Drugs for MPHOSPH8_ATP8A2

PubMed Abstract Search With ['A-B' AND 'drug'], ['A::B' AND 'drug'] * For more details on the Studied, Reported, Approved Drugs targeting this fusion gene, Go to FusionPub.

Drugs targeting genes involved in this fusion gene. (DrugBank Version 5.1.8 2021-05-08)