Oncology FISH Analysis - p53

Casandra

Casandra Test Code BA57814Version 1 (DRAFT)

Performing Lab

Lab Baylor GeneticsLab Test ID 8788CPT Codes 88237, 88271, 88275

Oncology FISH Analysis - p53

Clinical Use

Use

Oncology FISH Analysis - p53 is a Fluorescence in Situ Hybridization (FISH) assay specifically intended to detect alterations in the TP53 gene. The p53 protein plays a pivotal role in monitoring DNA damage and regulating both DNA repair and apoptosis. Dysfunction of p53 is implicated in nearly 50% of all cancer cases; deletion of this gene serves as a key mechanism resulting in the loss of p53 function. Accurate interpretation of the results necessitates consideration of the patient's clinical context and relevant pathological data, as results from this test should not be used as a standalone diagnostic tool. Its diagnostic value is particularly critical for patients with existing malignancies, given its potential role in prognostic assessment of p53-associated anomalies and treatment response tracking.

Special Instructions

Results must be interpreted with relevant clinical and pathological data. This FISH assay is specific to TP53 and does not identify rearrangements in the TP53 gene. For accurate results, ensure the specimen is collected properly and shipped per requirements. Always confirm with the laboratory prior to sample submission to ensure compliance to protocols.

Limitations

The FISH assay exclusively assesses the gain or loss of the TP53 loci and is not capable of detecting rearrangements within the TP53 gene itself. Therefore, limiting diagnostic conclusions solely to the results of this assay could lead to misinterpretations without the context of comprehensive clinical findings. Additionally, it is essential for healthcare providers to consider the patient's overall treatment and pathology history before sufficient conclusions can be drawn from this analysis alone. The specificity of the assay might limit its utility in broader cytogenetic evaluations.

Test Details