Tumor cell detection in peripheral blood and bone marrow

Area of Science:

• Oncology
• Molecular Biology
• Clinical Pathology

Background:

• The prognostic significance of detecting tumor cells in peripheral blood and bone marrow of solid tumor patients is not well-established.
• Various detection methods and marker genes are increasingly employed, leading to challenges in result comparability.

Purpose of the Study:

• To review recent findings on the detection of tumor cells in peripheral blood and bone marrow.
• To evaluate the correlation of these findings with clinical/biological parameters and their prognostic value.

Main Methods:

• Review of recently published literature on tumor cell detection in blood and bone marrow.
• Analysis of different techniques (marker genes, molecular methods) and their combinations.
• Assessment of correlations with clinical and biological parameters.

Main Results:

• Detection methods for circulating tumor cells (CTCs) and disseminated tumor cells (DTCs) are diverse, yielding largely incomparable results.
• CTC frequency in peripheral blood shows variable clinical relevance, with some studies reporting contradictory findings.
• DTCs in bone marrow demonstrated independent prognostic value in breast cancer, though correlations with other criteria remain inconsistent.

Conclusions:

• Despite advancements, the detection of tumor cells in peripheral blood or bone marrow lacks sufficient standardization and validation.
• Current evidence is insufficient to incorporate tumor cell detection into clinical therapeutic decision-making.
• Further research is needed to refine methods and establish clear prognostic and predictive roles.