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TMX2-CTNND1 readthrough (nonsense-mediated decay candidate) (TMX2-CTNND1)

Target
TMX2-CTNND1
Molecular classification
Noncoding RNA, Readthrough transcript, Fusion gene (in cancer when present as a protein-producing fusion)
01

Overview

TMX2-CTNND1 readthrough is a naturally occurring transcript resulting from transcriptional readthrough between the adjacent TMX2 and CTNND1 genes on chromosome 11[3][2][9][4]. This transcript is classified as a candidate for nonsense-mediated decay and, unlike its parental protein-coding genes, does not typically produce a protein. Pathological fusion events involving this locus can disrupt normal cellular function, leading to aberrancies in cell adhesion and signaling pathways that may contribute to oncogenesis[1][5]. However, as a ncRNA, TMX2-CTNND1 itself is neither a receptor nor an enzyme, and is not considered a therapeutic target.

Other names
CASCTNND1p120(cas)p120(ctn)Cadherin-associated Src substrateCatenin delta-1p120 cateninTMX2-CTNND1
02

Mechanism of action

Not applicable for the readthrough itself. For pathological fusions (if expressed as protein): Disruption of cell adhesion, signaling, and transcriptional regulation.

03

Biological functions

None directly for TMX2-CTNND1 readthrough (as it is noncoding and primarily targeted for decay)When considering fusion events, potential disruption includes: Aberrant protein interactionsDisrupted cell adhesionAltered cell signalingPromoting oncogenesis (if translated in pathological fusion settings)
04

Disease associations

Cancer (aberrant fusion proteins involving TMX2-CTNND1 and other partners may disrupt regulatory signaling and contribute to oncogenesis)Cleft lip/cleft palateBlepharocheilodontic syndrome 2 (association noted for the locus; likely attributed to regulatory context, not the readthrough specifically)
05

Safety considerations

Not applicable as a therapeutic target.If fusion events are expressed as proteins, potential challenges include loss of essential protein domains and promoting tumorigenesis
06

Interacting drugs

None
07

Biomarkers

None for TMX2-CTNND1 readthrough itselfPossible use for fusion transcript detection in cancer diagnostics (e.g., fusion gene markers in specific tumor types)

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