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Comparative Lesions Analysis Through a Targeted Sequencing Approach
Published on: November 5, 2019
SNP array and FISH findings in two pleomorphic hyalinizing angiectatic tumors
Arezoo Mohajeri1, Lars-Gunnar Kindblom, Vaiyapuri P Sumathi
1Department of Clinical Genetics, University and Regional Laboratories, Skåne University Hospital, Lund University, Lund, Sweden.
Cancer Genetics
|November 27, 2012
Summary
Pleomorphic hyalinizing angiectatic tumor (PHAT) is genetically distinct from similar soft tissue tumors. Genetic analysis revealed PHAT lacks the characteristic translocation found in myxoinflammatory fibroblastic sarcoma and hemosiderotic fibrolipomatous tumor.
Area of Science:
- Oncology
- Genetics
- Pathology
Background:
- Pleomorphic hyalinizing angiectatic tumor (PHAT) is a rare soft tissue neoplasm with intermediate malignancy and unclear cellular origin.
- Genetic characterization of PHAT is limited, but a potential overlap with myxoinflammatory fibroblastic sarcoma (MIFS) and hemosiderotic fibrolipomatous tumor (HFLT) has been suggested.
- MIFS and HFLT share a specific translocation, t(1;10)(p22;q24), involving TGFBR3 and MGEA5 loci.
Observation:
- Two PHAT cases were analyzed using single nucleotide polymorphism (SNP) array and fluorescence in situ hybridization (FISH).
- Neither PHAT case exhibited the t(1;10) translocation or rearrangements at the TGFBR3 or MGEA5 loci.
- Both tumors displayed unique chromosomal imbalances via SNP array analysis, with no shared abnormalities.
Findings:
- PHAT is genetically distinguishable from MIFS and HFLT.
- The characteristic t(1;10) translocation is not associated with PHAT.
- Shared genetic pathways between PHAT, MIFS, and HFLT are unlikely.
Implications:
- This study clarifies the genetic landscape of PHAT, differentiating it from related entities.
- Further research is necessary to identify the specific genetic drivers and molecular pathways involved in PHAT development.
- Understanding PHAT's unique genetic profile may aid in future diagnostic and therapeutic strategies.
