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SSX family member 9, pseudogene (SSX9P)
- Target
- SSX9P
- Molecular classification
- Pseudogene, Cancer-testis antigen family (as a pseudogene, lacks protein-coding function)
01
Overview
SSX family member 9, pseudogene (SSX9P) is a member of the SSX family of highly homologous genes associated with the synovial sarcoma X breakpoint protein family. However, SSX9P is classified as a pseudogene, meaning it does not code for a functional protein product. While protein-coding SSX family members act as transcriptional repressors and elicit humoral and cellular immune responses in cancer, SSX9P does not share those functions. SSX9P is not involved in the t(X;18) translocation characteristic of synovial sarcoma. Its designation as a pseudogene means it is not considered a druggable or tractable therapeutic target. Some confusion exists in the literature due to overlapping or inaccurate annotation—SSX9P should not be conflated with proteins such as ELSPBP1 (epididymal sperm-binding protein 1) or other unrelated reproductive proteins[1][2][3][4][7].
- Other names
- SSX9Synovial sarcoma X breakpoint 9, pseudogeneSynovial sarcoma X breakpoint 7, pseudogeneSSX9P
02
Mechanism of action
None applicable for drugs targeting SSX9P
03
Biological functions
None (pseudogene; not protein coding; does not participate in normal biological functions)
04
Disease associations
Sarcoma (association due to homology and the SSX gene family, but SSX9P itself does not have a confirmed disease role because it is nonfunctional)Other members of the SSX family (such as SSX1, SSX2, SSX4) are involved in synovial sarcoma due to chromosomal translocations, but SSX9P is not involved
05
Safety considerations
None (as it is not a therapeutic target)
06
Interacting drugs
None (no drugs directly target SSX9P as it is nonfunctional)
07
Biomarkers
None established (other SSX family members, such as SSX1, SSX2, and SSX4, are explored as biomarkers and targets for cancer immunotherapy, but SSX9P is not used due to its pseudogene status)
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